Concrete Logic

In this episode of the Concrete Logic Podcast, Seth and Dr. Belkowitz answer questions from students at Virginia Tech about concrete mix design. They discuss the role of aggregate size in a mix design, its impact on the cost and control of the concrete, and the importance of a well-graded gradation.

They also touch on the use of recycled concrete aggregate and its potential effects on the hydration process. The conversation highlights the economic and technical considerations involved in selecting the right aggregate for a concrete mix.

Additionally, Dr. Jon and Seth discuss the impact of fines in aggregate on shrinkage, the seasonality of concrete work, and the decision-making process for choosing cement types in construction projects. They also share their favorite concrete mix designs.

Takeaways

• Aggregate size in a concrete mix design affects the cost and control of the concrete.
• A well-graded gradation of rock and sand helps reduce the porosity index and the amount of paste needed in the mix.
• Recycled concrete aggregate can have contaminants that affect the hydration process and may require rock washing.
• Aggregate size can also impact shrinkage of concrete.
• Considerations for selecting the right aggregate include economic factors, availability, and technical specifications.
• The fines in aggregate, such as the fine particles that pass through a sieve, can have an impact on shrinkage and other properties of concrete.
• Concrete work is not necessarily seasonal, as there are techniques and materials available to pour concrete in various weather conditions.
• The choice of cement type in construction projects is typically made by the engineer, architect, or project manager based on project requirements and local industry practices.
• Favorite concrete mix designs and job site stories can vary among professionals in the industry, showcasing the diverse and exciting nature of working with concrete.

Chapters

00:00 Introduction and T-Shirt Discussion

10:00 The Role of Aggregate Size in Concrete Mix Design

16:11 The Impact of Recycled Concrete Aggregate on Mix Design

43:14 Favorite Concrete Mix Designs and Job Site Stories

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this episode of the Concrete Logic Podcast, host Seth Tandett answers questions from students at Virginia Tech about career advice and the inspiration behind the podcast. He discusses the benefits of staying with one company for a long time and finding a good fit in terms of culture and values.

Seth also shares the five laws of stratospheric success from the book 'The Go-Giver' and highlights the variety and unique aspects of the concrete industry. He concludes by inviting listeners to visit the podcast website and support the show.

Takeaways

• Staying with one company for a long time can lead to success and higher earnings in the long run.
• Finding a company that aligns with your values and culture is important for job satisfaction.
• The five laws of stratospheric success from 'The Go-Giver' are: value, compensation, influence, authenticity, and receptivity.
• The concrete industry offers a variety of roles and requires knowledge in chemistry, weather forecasting, and engineering.
• Concrete structures are sustainable and built to last, making the industry rewarding for those involved.

Chapters

00:00 Introduction and Q&A Format

06:41 The Five Laws of Stratospheric Success

14:10 The Variety and Unique Aspects of the Concrete Field

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this episode, Seth interviews Leo Zhang, a virtual construction manager and chair of ACI 117 subcommittee 117 L, who discusses using laser scanning in concrete construction. He explains that laser scanning is a form of reality capture that uses an optical instrument to collect dimensional information and create a 3D point cloud model.

Laser scanning is used in various stages of construction, including pre-construction planning, quality assurance, and as-built documentation. While laser scanning has many benefits, such as detecting clashes and ensuring accuracy, there are still limitations and challenges to overcome. Overall, laser scanning is a valuable tool that complements other surveying methods in the construction industry.

Takeaways

• Laser scanning is a form of reality capture that uses an optical instrument to collect dimensional information and create a 3D point cloud model.
• Laser scanning is used in various stages of construction, including pre-construction planning, quality assurance, and as-built documentation.
• Laser scanning can help detect clashes, ensure accuracy, and improve efficiency in construction projects.
• While laser scanning has many benefits, there are still limitations and challenges to overcome, such as accuracy and standardization.

Chapters

00:00 Introduction and Podcast Support

03:37 Overview of BIM and Laser Scanning

08:08 Challenges in Detailing Models for Concrete Structures

09:37 Application of Laser Scanning in Construction

15:54 Pre-Pour Quality Assurance with Laser Scanning

22:22 Favorite Use of Laser Scanning on a Job

25:09 Limitations and Certification of Laser Scanning

28:21 Setting Standards and Certification for Laser Scanning

31:07 Conclusion and Contact Information

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this episode, Seth interviews Simon Tippel from Phoenix Concrete Works. Simon specializes in decorative concrete, including countertops, fire bowls, wall claddings, and more. They discuss the advantages of concrete countertops over other materials, such as customization and flexibility.

Simon also explains the different reinforcement and technologies used in his work, including glass fiber and post-tensioning. They touch on the importance of precast vs. cast-in-place methods and the various sealers and coatings used to protect concrete countertops. Simon shares examples of other concrete products he creates, such as shower panels and furniture.

Takeaways

• Concrete countertops offer customization and flexibility, allowing for unique designs and finishes.

• Glass fiber reinforcement and post-tensioning are commonly used in decorative concrete.

• Precast concrete countertops provide better quality control and minimize mess during installation.

• Sealers penetrate the concrete and become part of the structure, while coatings provide a protective layer on top.

• Concrete can be used to create a wide range of products, including shower panels, sinks, and furniture.

Chapters

00:00 Introduction and Podcast Format

02:34 Introduction to Simon's Work

03:11 Advantages of Concrete Countertops

05:15 Customization and Flexibility

08:18 Concrete that Looks Like Wood

10:00 Reinforcement and Technologies Used

13:06 Precast vs. Cast-in-Place

14:51 Sealers and Coatings for Concrete Countertops

23:18 Other Concrete Products: Shower Panels, Sinks, Furniture

30:34 Flexibility and Artistic Possibilities of Concrete

35:00 Contact

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this Concrete Logic Podcast episode, Aaron Fisher discusses the importance of engaging with sustainability in the concrete industry. He highlights the need for concrete professionals to be part of the conversation and influence the rules and regulations being developed.

Aaron explains how the focus on CO2 emissions has led to an oversimplification of sustainability and the need to consider other factors such as water usage, fire resistance, and durability. He emphasizes the importance of presenting a comprehensive case for concrete's sustainability and resilience, and the need to push back against misleading messaging and lobbying efforts.

Takeaways

• Concrete professionals need to engage with the sustainability conversation and influence the rules and regulations being developed.

• The focus on CO2 emissions has led to an oversimplification of sustainability, and other factors such as water usage, fire resistance, and durability should be considered.

• Concrete has many advantages in terms of sustainability and resilience, including its long lifespan, fire resistance, and energy efficiency.

• A comprehensive case for concrete's sustainability and resilience needs to be presented, highlighting its benefits in comparison to other building materials.

• Concrete professionals should not shy away from the sustainability conversation and should actively promote the value of concrete in creating a more sustainable and resilient built environment.

Chapters

00:00 Introduction and Background

02:58 Engaging with Sustainability

10:07 Focus on Embodied Carbon

30:05 The Role of Lobbying and Messaging

40:13 Building a Stronger Case for Concrete

42:53 Conclusion and Call to Action

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this Concrete Logic Podcast episode, Seth and Dan discuss nuclear power and its connection to the concrete industry. They address public perception of nuclear power, the efficiency of nuclear energy, and the challenges of other energy sources like hydroelectric, wind, and solar power. They also explore the concerns about nuclear power, including waste management and accidents. Dan explains the storage and management of nuclear waste and highlights the potential of future reactor designs that can reuse waste as fuel.

Overall, they emphasize the importance of clean and efficient power generation for society. In this conversation, Dan McCoy and Seth discuss the potential of small modular reactors (SMRs) and their application in data centers. They address concerns and misconceptions surrounding nuclear power, highlighting its safety and waste management capabilities. The conversation delves into the efficiency and potential of fusion energy, emphasizing the need for continued research and development. The advantages of SMRs, including their scalability and rapid deployment, are discussed. The conversation concludes with a reflection on the importance of critical thinking when consuming media.

Takeaways

• Nuclear power is an efficient and clean energy source.
• The public perception of nuclear power has been influenced by past accidents and the misinformation surrounding them.
• Nuclear waste is a manageable issue, with current storage methods containing a relatively small amount of waste.
• Future reactor designs offer the potential to reuse nuclear waste as fuel, increasing efficiency and reducing waste. Small modular reactors (SMRs) offer a promising solution for power generation, particularly in data centers.

• Nuclear power is statistically proven to be the safest and cleanest form of energy.
• Small modular reactors (SMRs) offer advantages such as scalability and rapid deployment.
• The United States Navy's successful use of nuclear power demonstrates its safety and reliability.
• Critical thinking is essential when consuming media to ensure a well-rounded understanding of complex topics.

Chapters

00:00 Introduction and Podcast Support

03:08 Public Perception of Nuclear Power

04:21 Nuclear Power and Concrete

06:15 Power Generation by Steam

07:15 Efficiency of Nuclear Power

08:14 Nuclear Energy and Mass-Energy Conversion

09:12 Uranium and Nuclear Energy

10:12 Nuclear Accidents and Death Toll

13:01 Hydroelectric Power and Environmental Impact

14:14 Challenges of Wind and Solar Energy

15:22 Importance of Power Generation for Society

18:04 Concerns about Nuclear Power: Waste and Accidents

19:12 Fukushima Accident and Water Release

21:34 Storage and Management of Nuclear Waste

23:00 Future Reactor Designs and Waste Reuse

25:28 Small Modular Reactors (SMRs) and Data Centers

29:02 Addressing Concerns and Misconceptions

31:08 Benefits of Reactors in California

33:03 Efficiency and Potential of Fusion Energy

36:24 Safety of Nuclear Power and Comparison to Other Energy Sources

40:45 Advantages of Small Modular Reactors (SMRs)

43:13 Nuclear Power in the Navy and Public Perception

45:06 The Importance of Critical Thinking in Media Consumption
***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this Concrete Logic podcast episode, Seth interviews Dan McCoy from R.L. McCoy about the life cycle of bridges and the importance of bridge maintenance. They discuss the process of maintaining bridges over time, including inspections, repairs, and replacements.

Dan explains the challenges of designing and maintaining bridges in a changing world, with increasing traffic volumes and evolving transportation needs. They also touch on the role of bridges in supporting commerce and the need for continued investment in infrastructure.

Overall, the conversation highlights the critical role of bridge maintenance in ensuring the longevity and safety of these vital structures.

Takeaways

• Bridge maintenance is crucial for ensuring the longevity and safety of these structures.
• The life cycle of a bridge involves regular inspections, repairs, and replacements.
• Designing and maintaining bridges is a complex task, with challenges such as increasing traffic volumes and evolving transportation needs.
• Investment in infrastructure is necessary to support commerce and meet the demands of a changing world.

Chapters

00:00 Introduction and Podcast Support

03:03 Discussing the Life Cycle of Bridges

28:35 Challenges in Infrastructure Maintenance

29:09 The Importance of Bridges in Transportation

30:14 Contact Information and Conclusion

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this episode, Seth interviews Jim Kaylor from Durability Consultants about ASTM F6 and ASTM F710. They discuss the role of ASTM in the construction industry and the slow process of developing standards. They also delve into the issue of moisture in resilient flooring and the limitations of ASTM F710.

Jim shares his insights on proposed changes to the standard and emphasizes the importance of collaboration and coordination between different stakeholders. They conclude by highlighting the significance of good concrete and flooring practices and exploring alternative solutions such as polishing and enhancing concrete.

Takeaways

• ASTM plays a crucial role in the construction industry by developing standards for various materials and practices.
• The process of developing ASTM standards is slow and involves collaboration between different stakeholders.
• Moisture is a significant issue in resilient flooring, and ASTM F710 provides guidelines for addressing this problem.
• There is a need for improvements in ASTM F710 to address the complexities of flooring installation and ensure successful outcomes.
• Good concrete and flooring practices, as well as coordination between different trades, are essential for avoiding flooring failures.

Chapters

00:00 Introduction and Ways to Support the Podcast

03:32 Introduction to ASTM and its Importance

07:41 The Role of Committees and the Slow Process of ASTM

12:20 The Issue of Moisture in Resilient Flooring

18:45 The Limitations of ASTM F710

23:39 The Need for Collaboration and Coordination

30:04 Proposed Changes to ASTM F710

36:21 Addressing the Whole Flooring Process

41:31 The Importance of Good Concrete and Flooring Practices

46:12 Alternative Solutions: Polishing and Enhancing Concrete

47:20 Conclusion and Contact Information

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this episode, Seth interviews Neel Khosa from AMSYSCO, a post-tensioning supplier, to introduce post-tensioning and its history. Post-tensioning is a form of concrete reinforcement that uses high-strength steel cables inside concrete. It is about five times stronger than conventional rebar and is used in pre-stressed concrete.

Unbonded post-tensioning is the standard for high-rise construction and large concrete structures in the US. The advantages of post-tensioning include material savings, reduced construction time, improved seismic behavior, and reduced deflections and vibrations. The future of post-tensioning includes its use in office buildings and the development of new systems.

Takeaways

• Post-tensioning is a form of concrete reinforcement that uses high-strength steel cables inside concrete.
• Unbonded post-tensioning is the standard for high-rise construction and large concrete structures in the US.
• Post-tensioning offers material savings, reduced construction time, improved seismic behavior, and reduced deflections and vibrations.
• The future of post-tensioning includes its use in office buildings and the development of new systems.

Chapters

00:00 Introduction to Post-Tensioning

03:32 History of Post-Tensioning

05:09 Unbonded Post-Tensioning

11:21 Importance of Visual Representation of Post-Tensioning

12:17 Advantages of Post-Tensioning

16:15 Basic Engineering of Post-Tensioning

18:25 Fundamental Description of Post-Tensioning

20:37 Stressing Ends and Pulling Cables

23:19 Origin of Post-Tensioning

25:23 Post-Tensioning in High-Rise Buildings

30:01 Future Developments in Post-Tensioning

35:24 Conclusion and Contact Information

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

Summary

In this episode of Concrete Logic, Seth interviews Dr. Aaron Fisher to discuss the use of fiberglass rebar (GFRP) as an alternative to steel rebar in concrete construction. He explains the fabrication process and the sizes available for GFRP. The advantages of GFRP over steel rebar include higher tensile strength, lighter weight, corrosion resistance, and sustainability.

However, the adoption of GFRP is still limited due to the need for education and code updates. Dr. Fisher also highlights the limitations of GFRP, such as restrictions in high seismic areas and the need for specialized detailing. Aaron encourages contractors to consider GFRP as a cost-effective and durable solution for concrete reinforcement.

Takeaways

·       Fiberglass rebar (GFRP) offers higher tensile strength, lighter weight, corrosion resistance, and sustainability compared to steel rebar.

·     The adoption of GFRP is limited due to the need for education and code updates.

·     GFRP has limitations in high seismic areas and requires specialized detailing.

·       Contractors can save costs by downsizing GFRP bars and taking advantage of their material and labor efficiency.

Chapters

00:00 Introduction and Podcast Support

02:23 Understanding Fiberglass Rebar

05:06 Fabrication and Sizes of Fiberglass Rebar

10:57 Advantages of GFRP over Steel Rebar

19:48 Challenges and Adoption of GFRP

28:21 Limitations and Education on GFRP

36:48 Contact Information and Conclusion

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

Summary

In this episode, Seth interviews Robert Higgins, a flooring concrete consultant specialist, about the issue of moisture in old concrete. Robert explains that moisture in older concrete is caused by a condition called ionic dew point, where particles migrate to the surface due to diffusion, not moisture migration.

He emphasizes the importance of addressing older concrete differently and recommends grinding off the surface to remove accumulated salts. Robert also discusses the acclimation of adhesive and flooring products to prevent moisture accumulation. He highlights the need for proper testing and understanding of environmental conditions to avoid moisture issues.

Takeaways

• Moisture in older concrete is caused by ionic dew point, where particles migrate to the surface due to diffusion, not moisture migration.
• Grinding off the surface of older concrete can remove accumulated salts and prevent moisture issues.
• Adhesive and flooring products should be acclimated to the same temperature as the concrete to avoid moisture accumulation.
• Proper testing and understanding of environmental conditions are crucial to prevent moisture issues in flooring installations.

Chapters

00:00 Introduction

02:28 Issue with Old Concrete and Moisture

13:59 Moisture Accumulation and Adhesive Acclimation

20:34 Addressing Moisture in Operating Warehouses

26:00 Permanent Solutions and Avoiding Blame

29:33 Cement Grinding Aids and Chemical Migration

32:40 Conclusion

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

Donate here: https://www.concretelogicpodcast.com/support/ *** Episode References

Guest: Robert Higgins | RC Consulting | rcconsulting.higgins@gmail.com

Summary

In this episode of the Concrete Logic Podcast, Kyle Kammer from Concrete Strategies and Seth discuss the challenges and troubleshooting methods related to Type 1L cement. The conversation covers the reasons why Type 1L cement is a popular topic in the concrete industry and the challenges of using it across different locations.

Kyle shares insights into the issues of differential set and cracking, as well as the importance of communication and material variability. The discussion also explores the role of admixtures and the development of new solutions for Type 1L cement. Overall, the episode provides valuable information for contractors and industry professionals dealing with Type 1L cement.

Takeaways

• Type 1L cement is a popular topic in the concrete industry due to its newness and the challenges associated with its adoption.
• The use of Type 1L cement varies across different locations, and contractors need to be aware of the specific issues and requirements in each area.
• Communication and material variability are key factors in troubleshooting issues related to Type 1L cement.
• The development of new admixtures and testing of different materials can help address the challenges of using Type 1L cement.

Chapters

• 00:01 Introduction and Podcast Support
• 01:20 Discussion on Type 1L Cement
• 01:46 Challenges with Type 1L Cement
• 03:25 Troubleshooting Type 1L Cement Issues
• 04:26 Addressing Low Breaks and Cracking
• 05:13 Adapting to Changes in Cement Composition
• 07:16 Importance of Communication in Cement Transition
• 18:25 Exploring New Admixtures
• 21:26 Conclusion and Contact Information

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

Summary

In this episode of the Concrete Logic Podcast, Dr. Jon Belkowitz discusses the lack of accountability among civil engineers in the concrete industry. He highlights the disconnect between the design and implementation of concrete structures, with civil engineers often not present on job sites and lacking knowledge of concrete mix design. Dr. Belkowitz emphasizes the need for engineers to take responsibility for their designs and be held accountable for failures. He suggests that insurance companies and lawsuits may be the catalyst for change in the industry. Dr. Belkowitz proposes a new PE exam focused on concrete to ensure engineers have the necessary knowledge and understanding of the material.

Takeaways

• Civil engineers in the concrete industry often lack accountability for their designs and are rarely present on job sites.
• Many civil engineers have limited knowledge of concrete mix design and rely on ready mix providers for expertise.
• The lack of concrete education in civil engineering programs contributes to engineers' insufficient understanding of the material.
• Copying and pasting solutions without fully understanding the underlying principles is a common practice among civil engineers.
• Insurance companies and lawsuits may be the driving force for holding engineers accountable in the future.
• A new PE exam focused on concrete could help ensure that engineers have the necessary knowledge and understanding of the material.

Chapters

0:00 Introduction and Call to Action

02:00 ACI 132 and Responsibility in Concrete Construction

03:33 Civil Engineers' Lack of Accountability

06:16 Lack of Concrete Mix Design Knowledge

08:51 Insufficient Concrete Education in Civil Engineering Programs

11:37 Copying and Pasting Solutions

13:33 The PE Exam and Lack of Concrete Questions

15:23 Engineers' Lack of Understanding of Concrete Tests

18:04 Lack of Accountability in Concrete Failures

19:03 Engineers' Absence on Job Sites

23:21 The Need for Engineers to Be Held Accountable

26:09 The Role of Insurance Companies in Holding Engineers Accountable

28:25 The Future of Engineer Accountability

31:15 Proposed Changes to the PE Exam

32:08 Conclusion

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this Concrete Logic Podcast episode, Seth interviews Dave Mulcahey from GPRS about concrete sawing and drilling technology and the importance of safety in the industry. They discuss the major technology for scanning concrete: ground penetrating radar (GPR).

Dave explains that GPRS uses GPR to locate post-tension cables, electrical conduits, and rebar in or below concrete to ensure safe sawing and drilling. They also talk about Concrete Sawing and Drilling Safety Week, an annual event dedicated to promoting safety in the industry. Dave shares the key steps and precautions that workers should take to avoid accidents and injuries. They discuss the process of scanning concrete, the limitations and applications of GPR, and the integration of GPR data into building information models (BIM).

Dave emphasizes the importance of communication and collaboration between project managers and contractors to ensure safe and efficient drilling and cutting. They also address common safety issues, such as slips, trips, and falls, and exposure to silica dust.

Takeaways

• Ground penetrating radar (GPR) is a technology used to scan concrete and locate post-tension cables, electrical conduits, and rebar.
• Concrete Sawing and Drilling Safety Week is an annual event that promotes safety in the industry and educates workers on the dangers and precautions of concrete cutting and drilling.
• Communication plays a crucial role in scanning concrete, consulting contractors, and ensuring the safe execution of drilling and cutting.
• GPR technology provides a cross-sectional view of the concrete, allowing workers to identify targets and plan drilling and cutting accordingly.
• Silica dust exposure is a significant concern in the industry and measures should be taken to minimize exposure and protect workers' health.

Chapters

00:00 Introduction and Ways to Support the Podcast

02:29 Introduction to Concrete Sawing and Drilling Technology

04:24 Concrete Sawing and Drilling Safety Week

09:07 Process of Scanning and Safety Protocols

12:12 Overview of Ground Penetrating Radar (GPR) Technology

15:57 Limitations and Applications of GPR

17:19 Integration of GPR Data into Building Information Models (BIM)

20:32 Role of GPRS Project Managers

22:13 Recommendations for Cutting and Drilling

23:51 Concrete Safety Week and Common Safety Issues

25:48 Addressing Silica Dust Exposure

27:18 Participation in World of Concrete

28:37 Contact Information and Conclusion

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this Concrete Logic Podcast episode, Seth interviews Darren Baldwin, the president of Pikus 3D, a 3D printing company in the construction industry. They discuss the unique approach of Pikus 3D, which focuses on commercial applications of 3D printing in construction.

Darren explains that their stationary, climate-controlled facility allows for larger, more complex prints, such as architectural facades and themed structures. They also discuss the advantages of 3D printing, including speed, design freedom, and safety.

Darren shares the future direction of Pikus 3D, which includes expanding into site furnishings, theme facades, and structural concrete.

Takeaways

• What are commercial applications of 3D printing in construction.
• How stationary, climate-controlled facility allows for larger and more complex prints.
• Advantages of 3D printing include speed, design freedom, and safety.
• Future directions for commercial 3D concrete printing include site furnishings, theme facades, and structural concrete.

Chapters

00:00 Introduction and Welcome

02:48 Introduction to Pikus 3D

07:30 Different Approach to 3D Printing

13:14 Advantages of 3D Printing in Construction

18:30 Applications of 3D Printing in Construction

22:18 Future Direction of 3D Printing

27:32 Limitations and Constructability

31:08 Reinforcement and Structural Capabilities

33:00 Conclusion and Contact Information

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this episode of the Concrete Logic Podcast, host Seth talks to Sam Lines from ConSeal about microbial-induced concrete corrosion, particularly in the sewer system. They discuss various ways to mitigate this, including using antimicrobials and the potential consequences for failing to do so.

Sam highlights the importance of designing sewer systems well, considering factors such as expected mass loss and humidity levels. He also talks about current research and potential future technologies that could help protect concrete from this type of corrosion.

Takeaways

1. Understand the concept and negative impacts of microbial-induced corrosion on concrete used in sewer systems.

2. Learn about mitigation strategies such as antimicrobials and plastic liners to reduce concrete corrosion.

3. Get introduced to ongoing research and projects to create mitigation methods for microbial-induced corrosion.

4. Discover the importance of factors including oxygen levels, sulfur presence, and relative humidity in the corrosion process.

5. Explore the potential of enhancing concrete's resistance to corrosion through quality improvements and the use of substances like antimicrobials.

Chapters

00:01 Introduction and Podcast Mechanics

02:11 Understanding Microbial Induced Corrosion

04:37 The Role of Bacteria in Corrosion

09:54 The Impact of Corrosion on Concrete

14:54 Designing for Corrosion Resistance

22:49 The Role of Antimicrobials in Corrosion Resistance

31:40 The Impact of Humidity on Corrosion

37:51 Closing Remarks and Contact Information

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

Summary

In this Concrete Logic Podcast episode, Dean Craft discusses the topic of concrete moisture vapor emissions. He explains that moisture vapor emissions occur when residual moisture in concrete is released and can cause adhesive bond failures and other issues. Dean emphasizes the importance of addressing moisture vapor emissions early in the construction process and suggests proactive approaches such as using concrete mixes with admixtures to mitigate moisture. He also highlights the limitations of moisture testing and the need for a shift in the industry's mindset regarding moisture vapor emissions. Overall, the episode emphasizes the importance of proactive planning and communication to prevent issues related to moisture vapor emissions in concrete projects.

Takeaways

• Moisture vapor emissions in concrete can cause adhesive bond failures and other issues.
• Addressing moisture vapor emissions early in the construction process is crucial.
• Proactive approaches, such as using concrete mixes with admixtures, can help mitigate moisture vapor emissions.
• Moisture testing has limitations and may not accurately reflect the moisture conditions in concrete.

Chapters

00:00 Introduction and Podcast Support

02:28 Concrete Moisture Vapor Emissions

04:46 Effects of Moisture Vapor Emissions

09:05 Importance of Proper Timing

11:42 Personal Experience with Concrete Countertops

13:12 Importance of Proper Mixing

16:30 Misconceptions about Moisture Vapor Emissions

19:11 Real Issues and Blame on Moisture Vapor Emissions

22:19 Addressing Moisture Vapor Emissions Proactively

30:28 Proactive Approach and Liability

36:59 Moisture Testing and Relevance

41:59 Conclusion and Proactive Approach

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this episode of the Concrete Logic Podcast, Seth interviews Jason Adams from Megaslab, a technology company focused on optimizing concrete design and reducing material usage. They discuss the concept of jointless slabs and how Megaslab has evolved to offer a range of unique features.

Jason highlights the industry's commitment to sustainability and reducing embodied carbon in concrete. They also explore the challenges and misconceptions in the industry and the need for innovation in concrete testing. Jason shares his vision for the future, including plans to monetize carbon reduction and offers an opportunity to the listeners.

Takeaways

• An overall view on optimizing concrete design and reducing material usage.

• The industry's commitment to sustainability and reducing embodied carbon in concrete.

• There is a need for innovation in concrete testing to better assess durability and wear resistance.

• Megaslab aims to monetize carbon reduction and create a marketplace for low-carbon concrete certificates or credits.

Chapters

00:00 Introduction and Catching Up with Jason Adams

02:03 A Technology Company for Concrete

05:44 Optimizing Concrete Design and Reducing Material Usage

06:46 Working with Authorized Installers and Unique Projects

08:41 Sustainability and Embodied Carbon Reduction

12:47 Life Cycle Analysis and Longevity of Megaslab

15:31 Challenges and Misunderstandings in the Concrete Industry

18:25 Carbon Reduction and Monetization

20:19 The Future of Cement and Concrete Testing

25:16 The Importance of Durability and Wear Resistance

28:59 Innovation and the Future of Concrete Testing

31:36 Expanding Megaslab and Carbon Reduction Initiatives

34:36 Contact Information and Closing Remarks

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

Get ready for an illuminating episode of Concrete Logic! Our host Seth sits down with Mark Chase from RPX Technologies to delve into the world of maturity meters in construction. Discover the science behind these game-changers, and how they’re revolutionizing concrete construction!

Mark shares insider tips on how to use these tools to boost efficiency and hit project deadlines. Calibration and testing? We’ve got you covered. From post-tensioning to formwork removal, learn how maturity meters are making waves in the industry.

Key takeaways

• The magic of maturity meters: real-time strength of curing concrete.
• Calibration and testing: the secret sauce of accurate data.
• Maturity meters in action: post-tensioning, formwork removal, and mass concrete projects.
• Efficiency and timeliness: how maturity meters are making a difference.
• Practical tips: Marks' advice on different project scenarios.

Chapters

00:02 Introduction

00:46 How to support the show

2:29 Mark's Introduction

02:32 Maturity Meters

03:53 Appearance of Maturity Meters

05:28 Placement of Maturity Meters

06:59 Preparation and Calibration

09:27 Measurement and Projection

15:56 Efficiency and Project Schedule

20:04 Mass Concrete

20:57 Mass Concrete Applications

12:48 Data Accuracy and Testing

18:36 Using Maturity Meters

19:17 Advantages and Multiple Mix Designs

23:07 Conclusion

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this episode, Bill Kulish from Steelike discusses ultra-high-performance concrete (UHPC) and its applications in bridge construction.

UHPC is a composite material with a high binder content and a low water-cement ratio. It has superior compressive strength, tensile properties, and resistance to freeze-thaw cycles and chloride penetration. UHPC is commonly used for overlays, preservation, restoration, and repair of bridges.

Bill also explains the process of shotcreting UHPC and its potential for structural repairs and hardening.

Overall, UHPC offers a durable and sustainable solution for infrastructure projects.

Takeaways

• Ultra high-performance concrete (UHPC) is a composite material with a high binder content and a low water-cement ratio.

• UHPC has superior compressive strength, tensile properties, and resistance to freeze-thaw cycles and chloride penetration.

• UHPC is commonly used for overlays, preservation, restoration, and repair of bridges.

• Shotcreting UHPC offers a potential solution for structural repairs and hardening of various structures.

Chapters

00:00 Introduction and Value for Value

02:25 Introduction to Ultra High-Performance Concrete (UHPC)

08:19 Characteristics and Composition of UHPC

13:38 Applications of UHPC in Bridge Construction

19:50 UHPC Overlay without Profiling

25:48 Curing and Heat Generation in UHPC

32:38 Shotcrete Applications of UHPC

40:02 Conclusion and Future Topics

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

Ever wondered how reclaimed fly ash could revolutionize the concrete industry?

Tune into this episode of the Concrete Logic podcast where we’re shaking things up with Pete Paone. We’re diving deep into the world of reclaimed fly ash, a byproduct that’s about to make a big splash in the concrete world.

If you’re curious about the future of concrete and reclaimed fly ash, this is one episode you won’t want to miss! ***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

Usually in concrete construction, we think about the big things we can see - formwork, rebar, ready-mix concrete, tower cranes, trucks, excavation equipment, and laser screeds.

In this episode, we will explore the benefits of thinking about concrete at a one-billionth nanoscale.

Dan McCoy joins the podcast and shares his experience introducing nano-silica technology to his contracting business. Dan designs, pumps, and builds bridges with concrete.

If you want to hear from a contractor that has a ton of experience of nano-silica, this is the episode for you!

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

In this riveting episode of the Concrete Logic podcast, we’re thrilled to have Danielle Proctor, the CEO of Advanced Construction Robotics, as our special guest. Danielle, with her 25 years of experience in technology construction, new product development, and leadership, will be sharing her insights on the role of robotics in the construction industry. We’ll be diving deep into the workings of Tybot and Ironbot, two revolutionary robotic tools transforming how we approach concrete construction.

This is an episode you won’t want to miss, especially if you’re interested in the intersection of technology and construction. Danielle’s expertise and the innovative solutions her company is bringing to the table are truly game-changing. Join us as we explore how robotics is filling the labor gap, increasing efficiency, and redefining the future of the concrete industry.

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

What existing concrete technology is making the biggest impact in the industry?

Join us for this episode of the Concrete Logic Podcast as Dr. Jon Belkowitz of Intelligent Concrete returns to the show to share his top 5 concrete technologies that are currently making a difference in the concrete industry. Dr. Jon always keeps Seth on his toes when he visits the podcast; this episode is no different!

Seth thought he was going to sit back and listen to Dr. Jon rave about his favorite concrete tech, but is caught off guard when Dr. Jon wants to compare lists. Without preparation, Seth provides his top 5 concrete technologies that have a common theme.

What technologies do you think are on their top 5? Is it 3D printing? AI? You'll have to tune in to find out!

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

What is carbon capture? Why is CO2, the gas that we all exhale, considered a pollutant when it comes to producing concrete?

This Concrete Logic Podcast episode features a special guest, John Kline, a seasoned chemical engineer with a rich 50-year career in the cement industry. John has worn many hats, from research to project management, plant operations to optimization, and most recently, he has been focusing on reducing the carbon footprint of concrete by different means including carbon capture.

Join us to gain a deeper understanding of carbon capture and whether this technology truly has potential.

You will be surprised by John's perspective on carbon capture and what he believes is the answer to a sustainable future.

***

Did you learn something from this episode? If so, please consider donating to the show to help us continue to provide high-quality content for the concrete industry.

How light can concrete get?

On this episode of the Concrete Logic Podcast, we’re diving into the world of cellular concrete with Kirk Roberts, Vice President of Preconstruction at CJGeo.

In this episode, we’ll explore the fascinating world of cellular concrete. What is it? How does it differ from traditional concrete? And why can’t you just call your local ready-mix guy and ask for a truckload?

Kirk will guide us through the complexities of this specialty concrete, its unique properties, and the innovative techniques used to create it.

We’ll also discuss the guidelines and standards that govern its use, and why a 50 PSI might make a structural engineer balk, but is a game-changer in the world of cellular concrete.

So, if you’ve ever wondered about the future of concrete, or just want to learn about a cool new construction material, this episode is for you.

Tune in to the Concrete Logic Podcast and let’s explore the future of concrete together.

Welcome to another thrilling episode of the Concrete Logic Podcast! Today, we’re breaking the mold and diving into a unique intersection of concrete and… skateboarding? That’s right! We’re joined by Crystal Howard, the innovative mind behind Project Cornerstone and the Skate for Concrete program.

Crystal has ingeniously combined the thrill of skateboarding with the science of concrete to educate the younger generation about the vast opportunities in the concrete industry. Her program is not just about teaching the technicalities of concrete, but also about sparking interest and passion for the industry in a fun and engaging way.

In this episode, we’ll explore how Crystal’s program is addressing the workforce challenge in the concrete industry, and how she’s using skateboarding to make concrete cool for the next generation. We’ll delve into the origins of Skate 4 Concrete and Project Cornerstone, and how Crystal is revolutionizing concrete education.

From the science of concrete to the construction of skate parks, this episode is packed with fascinating insights and innovative ideas. Whether you’re a concrete enthusiast, a skateboarder, or just someone interested in unique educational approaches, this episode is a must-listen.

So, buckle up and get ready for an exciting ride as we skate our way through the world of concrete with Crystal Howard. Tune in now to the Concrete Logic Podcast!

Do you want to support the show? Donations of any size are appreciated greatly! Donate here: https://www.concretelogicpodcast.com/support/

Episode References

Get ready for a no-holds-barred conversation on the Concrete Logic Podcast! In this episode, we’re bringing back Matt “Mr. Concrete” McCombs, a veteran of the ready-mix industry and a die-hard Ohio State Buckeyes fan. We’re diving deep into the controversial topics that are shaking up the concrete industry. From the push for reducing CO2 emissions to the introduction of Type 1L cement, we’re tackling it all.

But that’s not all. We’re also exploring the role of AI in the industry and the promises it holds for making ready-mix designs more efficient. But are these solutions as good as they sound? Or are they just creating more problems for suppliers and contractors?

Join us as we challenge the status quo, question the established methods, and seek innovative solutions. This is an episode you don’t want to miss. Tune in to the Concrete Logic Podcast and let’s get the concrete conversation started!”

And remember, if you want to stay updated with the latest industry insights, don’t forget to sign up for our weekly knowledge email bombs. You can also follow us on your favorite podcast app. Let’s build a stronger future for concrete together!

Join us on the latest episode of the Concrete Logic Podcast as we delve into the intricacies of cement production with industry veterans Pete Paone and Robert Higgins.

We’re pulling back the curtain on cement kiln dust, its types, production methods, and alkali content. With over two decades of experience, Pete offers unique insights, while Bob shares perspectives from the ready mix side.

If you’ve ever been curious about the chemistry behind your concrete, this episode is a must-listen. Tune in as we unravel the complexities of cement production and challenge industry norms.

Ever wondered how an MBA dropout could end up as a business development executive in the concrete industry?

Or how a podcast could change the way we think about concrete? In this episode of ‘Concrete Logic Origin’, we dive into Seth’s fascinating journey from academia to the concrete industry, and how he’s using his podcast to challenge misconceptions about concrete.

Seth recounts his transition from managing a logistics company to playing a significant role at Baker Concrete in Southern Virginia. He also reveals why he started the Concrete Logic podcast and how it’s helping to shed light on the sustainability of concrete.

This isn’t just a story about career transitions, it’s about challenging norms and changing perceptions. Tune in to hear Seth’s unique insights and learn why concrete is more than just a building material.” Episode References 

Guest: Tats Nakagawa | Specified Growth Podcast

📚👷‍♂️ Are you a concrete contractor or just passionate about the industry?

Don’t miss our latest episode, “Concrete Contractors’ 12 Most Essential Books”! 🎧

We’ve got Jim Klinger from the American Society of Concrete Contractors (ASCC) sharing his top book recommendations for anyone in the field. 📖 From technical guides to insightful reads, these books are sure to improve your knowledge and skills.

🏗️ Tune in and find out what books you need to be considered to be the best concrete contractor! 💪🔨

Episode References 

🎙️🔊 Attention all builders, innovators, and curious minds! Don’t miss this episode of the Concrete Logic Podcast where host Seth is joined by the remarkable Dr. Jon Belkowitz, a concrete guru and patent-holder, who’s here to demystify the world of colloidal silica!

💡🧱 Whether you’re a seasoned expert or just eager to learn, buckle up as Dr. Belkowitz, armed with knowledge from his latest Father's Day book haul, unravels the science behind colloidal silica and its game-changing potential in tackling challenges in the concrete construction industry. With Seth asking the “dumb questions” for clarity and Dr. Belkowitz’s infectious passion, this episode is a riveting deep-dive that promises to enlighten and entertain. Tune in now! 🎧🚀

Join us on the Concrete Logic podcast as we dive deep into the fascinating world of water-cement ratio and its crucial impact on the strength and durability of concrete. Special guest Tyler Ley, renowned concrete expert and YouTube sensation, unveils a groundbreaking new water-cement ratio test that will revolutionize the construction industry.

Are you curious about the untold truths and challenges of polished concrete in construction projects?

Hey there, concrete enthusiasts! Are you ready to discover the untold secrets of polished concrete? Well, get ready for an eye-opening episode of the Concrete Logic Podcast, hosted by yours truly, Seth Tandett. In this captivating installment, I had the privilege of sitting down with none other than Tim Blankenship, a true legend in the concrete industry.

Imagine walking into a store and being captivated by the stunning floors beneath your feet. Have you ever wondered how they achieve that breathtaking finish? Prepare to be amazed as Tim, with his remarkable 37 years of experience, takes us on an exhilarating journey into the world of polished concrete.

But this podcast episode goes beyond the surface. We delve into the intricate details, from the crucial pre-construction meetings to the meticulous selection of diamond bonds for the perfect aggregate exposure. Tim fearlessly shares his challenges, and triumphs, and even reveals how polished concrete has revolutionized major retail giants like Home Depot and Walmart.

Curious about the one of the government's driving force behind groundbreaking innovations in the construction industry? Join Seth as he engages in a riveting conversation with Joseph King, an esteemed authority on sustainable construction and energy innovation. Gain exclusive access to the inner workings of the Department of Energy's ARPA-E and explore its audacious mission to revolutionize the way we build.

From unraveling the challenges of enhancing concrete durability to reducing emissions, we dive deep into the cutting-edge materials and technologies fueling this transformation. Don't miss this captivating episode to uncover the untold stories and extraordinary vision of the ARPA-E pioneers. Tune in now to unlock the secrets of sustainable construction innovation!

In this episode of the Concrete Logic Podcast, Seth interviews Jim Klinger from the American Society of Concrete Contractors (ASCC). They discuss the importance of ASCC's position statements in ensuring quality coordination between divisions of the trades in the concrete industry.

These statements, which are prepared by accomplished engineers, PhDs, college professors, and industry experts, serve as a constant reminder for stakeholders of their roles, responsibilities, and costs. Jim also talks about the genesis of Position Statement #6, which addressed the issue of Division 3 versus Division 9 floor tolerances, and how it sparked the creation of these statements.

Tune in to learn more about the collaborative effort behind ASCC's position statements and their impact on the industry. Episode References 

Looking to learn more about fiber reinforcement and its role in concrete slab design?

Look no further!

Are you looking to use Type I/II cement in your next project? If so, good luck to you!

Rich Szecsy from Alamo Concrete Products is back on the show to provide insight into how Type IL cement has rapidly gained a dominant position in the concrete market. Discover whether this overnight shift to a new type of cement is unprecedented in the history of concrete, and learn how industry professionals are adapting to the change.

Don't miss out on the exclusive interview with Rich Szecsy on the Concrete Logic Podcast. He reveals how Type IL cement is transforming the concrete industry at an unprecedented pace and what this means for the future of construction.

Episode References

On a concrete restoration project, how do you make sure the repairs made address the underlying issue that caused the damaged concrete in the first place?

Typically, you would chip out the spalling concrete, clean it and patch it back. But how do you make sure the root cause of the deteriorating concrete is eliminated?

Hydrogel, a concrete restoration technology, is one solution that seeks to isolate the impurities that reduce concrete's greatest attribute - longevity. Jon Belkowitz with Edyston joins the show to explain what is hydrogel, the chemistry behind the technology, and how we can apply it to our deteriorating infrastructure today.

Have you won a recent project, but haven't signed the contract yet?

Don't sign it until you listen to this episode of the Concrete Logic Podcast!

Cian Brennan of Quantum Contract Solutions joins the show to share what he looks out for in a subcontract. He points to three key contract terms that you want to make sure to exclude in all your contracts. In the last few minutes of the episode, Cian provides a career-changing approach all contractors should have when they find themselves in a meeting over a project dispute.

If you want to know how to save your company thousands of dollars and avoid claims on your next project, you don't want this episode!

Episode References

A patent is “the right to exclude others from making, using, offering for sale, or selling” an invention. The U.S. government awards between 200,000 to 300,000 patents per year including ones associated with the concrete industry.

Are patents good for the concrete industry? 

Returning to the show, Jon Belkowitz of Intelligent Concrete shares his experience with patents and why he believes they benefit the industry. He tells how his ideas were stolen by others in the past and how he protects his ideas today.

If you ever thought about patenting your concrete idea, you'll want to tune in to this episode!

Episode References

Think about where we were two years ago.

Did you think we would still be worrying about material and labor shortages in 2023?

In our never-ending quest to discover more efficient ways to build with concrete, we got an opportunity to meet Claire Gandee of Bekaert. Claire joins the Concrete Logic Podcast to teach us all about reinforcing concrete with steel fibers.

Steel fibers could be another creative way to reduce concrete construction labor and time on your next project!

Listen to the episode to find out how.

Episode References

A bonus episode of a couple of concrete guys venting about the college football playoffs. U of M fans may want to skip this episode.

Episode References

These days, every concrete supplier quote has some kind of future price escalation. It seems all the price increases stem from one ingredient of concrete - cement! This raises a lot of questions...

Why are cement prices constantly on the rise? What does limestone have to do with the price increases? How is it that all the major cement manufacturers switched to type IL cement at the same time? Do we know how type IL is going to perform over time? 

Matt McCombs from Intelligent Concrete joins the Concrete Logic Podcast to share his insight into the cement manufacturing industry and helps us explore these questions. 

Episode References

Did you know that Division 9 Floor Covering specifications have concrete floor flatness requirements that don't line up with Division 3 Concrete tolerances?

Does the concrete contractor on your project even know there is a Division 9 specification???

In this podcast episode of Concrete Logic, Keith Robinson of DIALOG joins the show to make us wiser on another concrete industry conundrum - floor flatness. 

He suggests a proactive approach to ensure concrete slabs meet or exceed floor installation requirements. Keith points out that even if a concrete slab meets floor flatness requirements days after it's placed, it may not be that flat once the flooring contractor arrives to install floor covering months later.

What can we do to ensure our concrete slabs remain flat? Find out in this episode of Concrete Logic!

Support the show by donating and get your name listed as an episode producer! Click here: https://www.concretelogicpodcast.com/support/

Episode References