In this episode of the Concrete Logic Podcast, Seth Tandett and Gary Brown delve into the intricacies of high-rise concrete pumping. They discuss the importance of concrete pumping in urban construction, the challenges faced in high-rise projects, and the role of placing booms in enhancing productivity. The conversation also covers safety considerations, the pros and cons of using placing booms, and the emergence of mobile placing booms. Throughout the discussion, the significance of planning and communication in successful concrete pumping operations is emphasized. Takeaways Concrete pumping is a critical component of high-rise construction. Placing booms can significantly increase the speed of concrete delivery. High-rise projects often have tight logistics and space constraints. Proper planning is essential to avoid budget overruns with placing booms. Safety protocols must be strictly followed during concrete pumping operations. Mobile placing booms offer flexibility in challenging construction environments. Communication between team members is vital for successful operations. The cost of placing booms can be high, but they are cost-effective for large projects. Training is necessary to ensure safe and efficient use of concrete pumping equipment. Understanding the equipment and its limitations is crucial for project success. Chapters 00:00 Introduction to High-Rise Concrete Pumping 02:56 Understanding Concrete Pumping 06:33 High-Rise Concrete Pumping Challenges 10:54 Placing Boom Explained 14:37 Pros and Cons of Placing Booms 18:30 Safety Considerations in Concrete Pumping 27:03 Mobile Placing Booms and Their Applications 34:31 Planning for Successful Concrete Pumping ***Did you learn something from this episode? Would you like to support the concrete industry's favorite podcast? If so, donate at https://www.concretelogicpodcast.com/support/⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ . When YOU donate to the show, you will be listed as a producer of the next episode that is released! Join the Concrete Logic Academy! Enhance your learning from our pod

In this episode of the Concrete Logic Podcast, Seth and Chad White discuss best practices for placing and finishing concrete floors. Chad shares insights on the importance of a solid base, the use of vapor retarders, and the critical role of doweling systems for load transfer. They delve into concrete placement techniques, mix design, and various finishing methods to achieve high-quality surfaces. The conversation also covers curing practices, common issues like blisters and delamination, and the significance of bump cutting for achieving flatness. Chad emphasizes the need for attention to detail and proactive planning in concrete work. Takeaways • A solid base is crucial for quality concrete floors. • Vapor retarders help mitigate moisture issues. • Doweling systems are essential for load transfer across joints. • Managing slump consistency can improve overall results. • Proper strike-off techniques lead to flatter floors. • Curing methods significantly affect slab quality. • Evaporation retarders are necessary in hot weather conditions. • Attention to detail is vital in concrete work. • Plan your work and be prepared for changes. • Concrete is a perishable commodity that requires careful handling. Chapters 00:00 Best Practices for Quality Concrete Floors 06:59 Understanding Doweling Systems 10:00 Concrete Placement and Mix Design 15:03 Finishing Techniques for Concrete Slabs 19:56 Curing and Protecting Concrete Slabs 25:56 Common Issues: Blisters, Delamination, and Rock Shadowing 33:03 Bump Cutting and Surface Scratching  ****Did you learn something from this episode? Would you like to support the concrete industry's favorite podcast? If so, donate at https://www.concretelogicpodcast.com/support/⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ . When YOU donate to the show, you will be listed as a producer of the next episode that is released! Elevate your expertise in concrete construction by joining the Concrete Logic Academy! You can try it for one week for free, and you can cancel at any time. Learn more at https://www.concretelogicacademy.co

In this episode of the Concrete Logic Podcast, Seth and Bob Higgins discuss the complexities of moisture testing in concrete. They explore the misconceptions surrounding moisture dynamics, the importance of time of installation testing, and the regional variations in moisture standards. Bob emphasizes the need for better moisture data interpretation and environmental factors impact on concrete performance.Takeaways • Moisture testing in concrete is often misinterpreted. • Older concrete can have more moisture-related issues than newer concrete. • Timing of installation testing is crucial to avoid moisture claims. • Concrete's top inch is often weaker and more permeable. • Environmental control is essential during concrete installation. • Salts in concrete can attract moisture from the air. • Regional differences affect moisture standards and testing. • Understanding building science can prevent costly mistakes. • The stack effect can influence moisture levels in multi-story buildings. • New concrete formulations may have increased alkalinity, leading to more issues.Chapters 00:00 Rethinking Moisture Testing in Concrete 10:48 Understanding Concrete's Moisture Dynamics 15:29 Time of Installation Testing 20:55 Regional Variations in Moisture Standards18:44 Internal vs External Concrete Issues 22:33 Balancing Water in Concrete Mixes 25:32 The Future of Concrete Materials***Did you learn something from this episode? Would you like to support the concrete industry's favorite podcast? If so, donate at https://www.concretelogicpodcast.com/support/⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ . When YOU donate to the show, you will be listed as a producer of the next episode that is released! Elevate your expertise in concrete construction by joining the Concrete Logic Academy! You can try it for one week for free, and you can cancel at any time. Learn more at https://www.concretelogicacademy.com***Episode ReferencesGuest: Robert “Concrete Bob” Higgins | RC Consulting | rcconsulting.higgins@gmail.comGuest Website:⁠

In this episode of the Concrete Logic Podcast, Seth and Joe Shetterley discuss the innovative technology of liquid fly ash (LFA) and its implications for the concrete industry. Joe explains the differences between traditional fly ash and LFA, highlighting the challenges faced with conventional supplementary cementitious materials (SCMs) and the importance of water management in concrete mixes. The conversation delves into the testing and implementation of LFA, its benefits in stabilizing concrete properties, and the future of concrete materials, emphasizing the role of nanoparticles in enhancing performance.Takeaways • Liquid fly ash is a new technology aimed at improving concrete performance. • Traditional fly ash has quality issues that LFA seeks to address. • Water management is crucial for the success of concrete mixes. • Testing is essential to determine the right mix of LFA and traditional SCMs. • The concrete industry needs to adapt to new materials and methods. • Nanoparticles are becoming increasingly important in concrete technology. • Chemicals in concrete mixes can lead to more problems than solutions. • The future of concrete may rely on innovative materials like LFA and nanoparticles.Chapters 00:00 Introduction to Liquid Fly Ash Technology 02:56 Understanding Liquid Fly Ash vs Traditional Fly Ash 05:01 Addressing Problems in Concrete Mixing 08:25 The Role of Liquid Fly Ash in Concrete 11:06 Testing and Protocols for Effective Use 12:28 Finishing Challenges in Concrete 15:05 The Impact of Water Management 18:44 Internal vs External Concrete Issues 22:33 Balancing Water in Concrete Mixes 25:32 The Future of Concrete Materials***Did you learn something from this episode? Would you like to support the concrete industry's favorite podcast? If so, donate at https://www.concretelogicpodcast.com/support/⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ . When YOU donate to the show, you will be listed as a producer of the next episode that is released!***Episode ReferencesGuest: Joe Shetterley | E5 | https://www.e5nanosilica.com/contact Guest Webs

In this episode of the Concrete Logic Podcast, Seth and Tyler Ley delve into the intricacies of Type 1L cement, discussing its significance in the construction industry and the challenges associated with its use. They explore the evolving landscape of blended cements, the importance of consistent performance, and the need for better evaluation tools. Tyler emphasizes the necessity for industry professionals to take control of their materials and establish performance standards to ensure quality in concrete production. The conversation highlights the future of concrete technology and the role of measurement in achieving desired outcomes. Takeaways Type 1L cement is a significant development in the concrete industry. Blended cements are becoming more common and offer various benefits.Curing practices greatly influence the performance of concrete. Not all cements perform the same; variability exists between suppliers. The float test is a practical tool for evaluating concrete workability. Future concrete production will require more precise measurements. Industry professionals need to establish clear performance standards.Understanding the properties of materials is crucial for quality control. The use of admixtures and SCMs will increase in concrete mixes. Continuous learning and adaptation are essential for success in concrete technology.Chapters 00:00 Introduction to Concrete Logic Podcast 02:17 Understanding Type 1L Cement 05:05 Challenges and Variability in Cement Quality 11:40 Tools for Evaluating Cement Performance 18:26 Future of Concrete Testing and Measurement 25:50 Blended Cements and Their Implications 32:23 Call to Action for Concrete Professionals***Did you learn something from this episode? Would you like to support the concrete industry's favorite podcast? If so, donate at https://www.concretelogicpodcast.com/support/⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ . When YOU donate to the show, you will be listed as a producer of the next episode that is released!***Episode References Guest: Dr. Tyler Ley | Concrete Freaks Guest Website:⁠

In this episode of the Concrete Logic Podcast, Seth and Dr. Jon Belkowitz delve into the complexities of cement testing, particularly focusing on Type 1L cement and the challenges posed by blended cements. They discuss the importance of establishing a proactive quality management system to ensure the integrity of concrete mixes, emphasizing the need for rigorous testing and quality control measures. The conversation highlights the financial implications of poor quality control and the potential for significant cost savings through proactive measures. Dr. Jon shares insights from his experiences in the industry, advocating for a shift towards more reliable testing practices to enhance the overall quality of concrete production. Takeaways Quality management systems are essential for concrete producers. Type 1L cement is often misunderstood in the industry. Blended cements can lead to unexpected challenges. Proactive testing can prevent costly mistakes. Understanding ASTM standards is crucial for compliance. Quality control can significantly reduce legal liabilities. Investing in quality management can save money in the long run. Communication between teams is vital for quality assurance. Testing frequency should increase with new cement deliveries. The concrete industry must adapt to changing materials and standards. Chapters 00:00 Introduction and Podcast Support 02:22 Donations and Guest Suggestions 08:35 Testing Cement: Ensuring Quality and Specifications 12:09 Understanding the Differences: Type 1L Cement vs. Type 1 Cement 19:58 The Need for a Quality Management System in the Concrete Industry 21:52 Implementing a Vetting Process for Cement: Benefits and Challenges 27:27 Testing Methods and Resources 36:17 The misconception of already doing quality control 41:33 The potential cost savings of proactive quality control 45:31 Avoiding issues by investing in proactive quality control 47:15 The simple steps to improve quality control 49:19 Conclusion and invitation to further discussion***Did you learn something from this episode? Would you like to support the concrete industry's favorite podcast? If so, donate at

In this episode of the Concrete Logic Podcast, host Seth interviews Abigail Olson, a 24-year-old ready-mix driver and author. Abigail shares her journey into the concrete industry, discussing the challenges she faced in obtaining her commercial driver's license (CDL) and the unique aspects of her job. She describes a typical day as a ready-mix driver, the importance of teamwork on job sites, and the role's physical demands. The conversation also touches on the barriers for young drivers in the industry and concludes with Abigail discussing her memoir, 'The Hay Wagon.' Takeaways Abigail always wanted to be a driver since high school. The federal age restriction for driving commercial vehicles is a barrier for young drivers. Abigail wrote an op-ed advocating for changes to age restrictions in driving jobs. Her job allows her to enjoy the outdoors and see sunrises. • The unpredictability of work hours is a unique aspect of her job. Abigail enjoys the active nature of her work, which keeps her moving. She listens to audiobooks and music while driving, making the time enjoyable. Training for her CDL involved extensive practical and theoretical learning. The job requires teamwork and communication on job sites. Abigail's memoir, 'The Hay Wagon,' explores her personal experiences and challenges. Chapters 00:00 Introduction to Concrete Driving and Abigail's Journey 02:38 The Path to Becoming a Ready Mix Driver 12:47 A Day in the Life of a Ready Mix Driver 23:09 Challenges and Solutions in the Concrete Industry 30:46 The Importance of Experience and Training in Driving 34:48 Abigail's Book and Final Thoughts***Did you learn something from this episode? Would you like to support the concrete industry's favorite podcast? If so, donate at https://www.concretelogicpodcast.com/support/⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ . When YOU donate to the show, you will be listed as a producer of the next episode that is released!***Episode References Guest: Abigail Olson Guest Website:⁠ https://abigailaliceolson.com/

In this episode of the Concrete Logic Podcast, Seth interviews Richard Williams, Senior Director of Talent for Baker Construction. They discuss the importance of hands-on experience in concrete careers, the growing demand for professionals in the industry, and the impact of technological innovations. Richard shares insights on career paths available in concrete construction and emphasizes the value of field experience in shaping successful careers. Takeaways Hands-on experience is crucial for success in concrete careers. Internships provide valuable insights into career preferences. The demand for concrete professionals is significantly increasing. Technological advancements are enhancing productivity in construction. Field experience fosters respect and strong relationships in the industry.Certifications are beneficial, but practical experience is essential. Career paths in concrete construction are diverse and flexible. The construction industry is dynamic, with daily challenges and innovations. Networking through local chapters and competitions can enhance career prospects. Field experience contributes to effective leadership and team development.Chapters 00:00 Introduction to Concrete Careers 03:01 The Importance of Hands-On Experience 12:10 Growing Demand for Concrete Professionals 16:04 Technological Innovations in Concrete Construction 20:50 Career Paths in Concrete Construction 27:54 Reflections on Field Experience and Career Growth***Did you learn something from this episode? Would you like to support the concrete industry's favorite podcast? If so, donate at https://www.concretelogicpodcast.com/support/⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ . When YOU donate to the show, you will be listed as a producer of the next episode that is released!***Episode References Guest: Richard Williams | Baker Construction | Williamsrgf@bakerconcrete.com Guest Website:⁠ https://bakerconstruction.comGuest LinkedIn:

In this episode of the Concrete Logic Podcast, Seth interviews Jarett Gross, founder of Automate Construction, who discusses the evolution of construction automation and 3D printing. Jarett emphasizes the need to differentiate between different types of 3D printing technologies and materials, as they vary significantly. He believes that 3D printing has the potential to revolutionize construction. Still, he acknowledges that it will take time to overcome challenges such as high material costs and the integration of various construction processes. Jarett also highlights the importance of data collection and analysis in improving automation and construction practices. He mentions that the United States is currently a hotspot for construction automation, but other countries like China and Europe have also made significant strides in the field. Takeaways Different 3D printing technologies and materials types should be differentiated and not grouped.3D printing has the potential to revolutionize construction, but challenges such as high material costs and integration of various construction processes need to be addressed. Data collection and analysis are crucial for improving automation and construction practices. The United States, China, and Europe are leading the way in construction automation and 3D printing. Chapters 00:00 The Integration of Automation and Construction 03:13 Understanding the Definition of 3D Printing in Construction 08:38 Challenges and Costs of 3D Printed Construction 18:05 The Potential for Automation to Revolutionize the Construction Industry 21:15 The Global Landscape of Construction Automation***Did you learn something from this episode? Would you like to support the concrete industry's favorite podcast? If so, donate at https://www.concretelogicpodcast.com/support/⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ . When YOU donate to the show, you will be listed as a producer of the next episode that is released!Episode References Guest: Jarett Gross | Automate Construction | jarett@3dprinted.construction Guest Website:⁠

In this Concrete Logic Podcast episode, Seth, Rich, and Dr. Jon discuss the potential issues with water-to-cement ratios in concrete production. They highlight the challenges of using new cement and fly ash materials, as well as the variability in water content and cement quantities. The conversation emphasizes the importance of managing risk and the need for accurate calculations to ensure the desired concrete properties. The episode revolves around the need to re-educate construction industry designers and engineers about the changing definitions and standards in concrete production. The speakers discuss the importance of communication, risk management, and practical problem-solving in the field. Takeaways The use of new cement and fly ash materials can introduce variability in water-to-cement ratios in concrete production. Managing risk and accurately calculating water-to-cement ratios is crucial for achieving desired concrete properties. Moisture probes and variations in water content and cement quantities can further complicate the calculation of water-to-cement ratios. Concrete production involves a balance between book Crete (lab calculations), lab Crete (batch plant production), real Crete (on-site delivery), and street Crete (field adjustments). The construction industry needs to re-educate designers and engineers about changing definitions and standards in concrete production. Practical problem-solving and risk management are essential in the field.Chapters 03:19 The Colin Lobo Story 08:45 The Three Buckets of Concrete: BookCrete, LabCrete, RealCrete 13:26 The Role of Risk Management in Concrete Production 17:06 The Impact of Production Variability on Water-to-Cement Ratios 22:21 The Importance of Accurate Measurements and Calibration 27:18 The Implications of Inaccurate Water-to-Cement Ratios 33:22 The Need to Redefine Water-to-Cement Ratio Calculations 35:10 The Need for Practical Solutions and the Challenge of Waiting for Change 38:40 The Shift from Approval to Review and the Importance of Communication 42:30 The Shift to Blended Cement and the Importance of Redefinition 47:05 Collaboration and Communication for Successful Projects 50:24 The Complexity of Concrete and the Need for Prac

In this episode of the Concrete Logic Podcast, Seth and Dan McCoy discuss aging concrete and how to responsibly treat and maintain it. They talk about the importance of maintaining existing infrastructure and extending the life of aging concrete structures. Dan shares his experience working on IDIQ contracts in Indiana, where they focus on addressing specific issues in aging concrete. They also discuss the use of nanosilica as a solution for healing and strengthening aging concrete. Nanosilica works by purging harmful chemicals and promoting the growth of calcium silicate hydroxide, which improves the strength and durability of the concrete. In this conversation, Dan McCoy discusses a unique project involving a tunnel that was repurposed as a walking trail. He explains the challenges of maintaining aging infrastructure and the importance of eliminating cold joints in concrete structures. Dan also shares his experience using hydrogels to repair cracks in concrete and highlights the potential of nanotechnology in the field. He emphasizes the need for sustainable and long-lasting infrastructure solutions.TakeawaysMaintaining existing infrastructure is crucial to extend the life of aging concrete structures.Nanosilica is a solution for healing and strengthening aging concrete by purging harmful chemicals and promoting the growth of calcium silicate hydroxide.Using nano-silica in structural patching can improve the bond strength and longevity of the repaired concrete. Hydrogels offer a promising solution for repairing cracks in concrete and promoting self-healing properties.Nanotechnology has the potential to revolutionize the construction industry by improving the durability and longevity of concrete.Sustainable and long-lasting infrastructure solutions are crucial for reducing future maintenance costs and environmental impact.Chapters00:00 Introduction and Support for the Podcast02:24 Treating and Healing Aging Concrete07:03 The Role of IDIQ Contracts in Addressing Aging Concrete Issues09:25 Using Nanosilica to Heal and Strengthen Aging Concrete19:53 The Benefits of Nanosilica in Aging Concrete23:18 Case Study: Applying Nanosilica for Concrete Repair27:19 The Unique Tunnel Project29:43 Challenges with Aging Infrastructure32:10 Discovering the Problem wi

In this episode of the Concrete Logic Podcast, Seth and Dr. Jon Belkowitz discuss the concrete construction maturity method. The maturity method is an estimation technique that predicts in-place concrete strength based on temperature and time. It involves determining the datum temperature and activation energy, developing maturity curves in the laboratory, and placing maturity meters in concrete elements in the field. The conversation emphasizes the importance of proper preparation and understanding of the method to ensure accurate results. Takeaways The maturity method is an estimation method for concrete strength and requires proper preparation and planning. The ASTM C1074 standard provides guidelines for estimating concrete strength using the maturity method. Misuse of the maturity method can lead to discrepancies between predicted and actual strengths. The maturity method involves determining the datum temperature and activation energy, developing maturity curves in the laboratory, and placing maturity meters in concrete elements in the field. The method is not a replacement for other testing methods and should be used in conjunction with other validation methods. The maturity method can be used to optimize construction schedules and ensure the strength of concrete before form removal or structural work.Chapters 00:00 Introduction and Podcast Support 03:10 Understanding the Maturity Method 13:02 Misconceptions and Consequences of Misusing the Maturity Method 18:26 The Impact of Early Age Concrete Temperature 24:09 Understanding the Maturity Method 27:22 The Difference Between Lab and Field Conditions 29:30 Using Maturity Sensors for Real-Time Monitoring 29:48 The Simplicity and Reliability of the Maturity Method 36:07 The Steps Involved in Determining the Datum Temperature 40:50 The Limitations of the Maturity Method***Did you learn something from this episode? Would you like to support the concrete industry's favorite podcast? If so, donate at https://www.concretelogicpodcast.com/support/⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ . When YOU donate to the show

In this episode of the Concrete Logic Podcast, Seth interviews Shaun Lane, founder and president of NanoCrete, about the use of graphene in concrete. They discuss the potential of graphene as a wonder material and its ability to improve the performance of concrete. Shaun explains that graphene is a carbon nanomaterial made up of carbon atoms linked together atomically in a two-dimensional configuration. He highlights the benefits of graphene in concrete applications, such as increased adhesion, reduced pumping pressure, and improved workability. Shaun also addresses common misconceptions and conspiracies surrounding graphene. Takeaways Graphene is a carbon nanomaterial that has the potential to significantly improve the performance of concrete. A small amount of graphene in concrete can lead to significant performance improvements, such as increased adhesion and reduced pumping pressure. • Graphene is manufactured through processes like chemical vapor deposition and pyrolysis, and it can be produced from waste materials. Graphene is a versatile material that has applications beyond concrete, including paints, polymers, coatings, batteries, and superconductors. There are misconceptions and conspiracies surrounding graphene, but it is important to understand that it is simply carbon atoms linked together atomically.Chapters 00:00 Introduction and Support for the Podcast 02:51 The Potential of Graphene in Concrete 10:53 Testing and Applications of Graphene in Concrete 15:50 Advantages of Graphene as an Admixture 20:09 Fresh Properties and Performance of Graphene-Enhanced Concrete 25:09 Manufacturing and Waste Materials for Graphene Production 29:04 Disrupting the Industry with Graphene 31:57 Conclusion and Future OutlookDid 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: Shaun Lane | Nanocrete | shaun@nano-crete.com Guest Website:⁠ https://nano-crete.comPr

In this episode of the Concrete Logic podcast, Seth interviews Kevin Cavanaugh from Arcosa Lightweight Aggregates about lightweight concrete. They discuss the history and types of lightweight aggregates, the advantages of using lightweight concrete, and the special considerations for handling and finishing lightweight concrete. They also touch on the use of lightweight concrete in response to the challenges of Type 1L cement. Overall, the conversation highlights the benefits and misconceptions surrounding lightweight concrete. Takeaways Lightweight concrete offers advantages such as reduced weight, allowing for smaller and fewer structural elements, and improved fire resistance.Special handling and pre-soaking of lightweight aggregates are necessary to ensure proper internal curing and achieve desired performance. Lightweight concrete can be a solution to the challenges posed by Type 1L cement, but it requires careful consideration and coordination with contractors and suppliers. Misconceptions about lightweight concrete, such as concerns about durability and finishing, persist and need to be addressed through education and communication.Chapters 00:00 Introduction and Overview 04:19 Types and History of Lightweight Aggregates 09:03 Advantages of Lightweight Concrete 12:40 Special Considerations for Handling and Finishing Lightweight Concrete 18:03 Using Lightweight Concrete for Type 1L Cement Challenges 33:44 Dispelling Misconceptions about Lightweight Concrete 38:00 ConclusionDid 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: Kevin Cavanaugh | Arcosa Lightweight Aggregates | kevin.cavanaugh@arcosa.com Guest Website:⁠ https://arcosalightweight.com/Producers: Jodi Tandett Donate & Become a Producer: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://www

In this episode, Dr. Jon Belkowitz and Seth discuss colloidal silica and its various applications in the concrete industry. Dr. Jon highlights the differences between colloidal silica and silicates, emphasizing the benefits of using colloidal silica as a densifier and for surface treatments. He also mentions the ongoing efforts to create an ASTM standard for colloidal silica. The conversation touches on the importance of performance testing and the potential long-term impact of using colloidal silica in concrete. Takeaways • Colloidal silica is a controlled suspension of nano-sized particles of silica, typically between 1 and 100 nanometers in diameter. • Colloidal silica is used as a densifier and for surface treatments in the concrete industry. • Silicates, on the other hand, react quickly and create a gel-like surface, which can limit penetration into the concrete. • Using colloidal silica instead of silicates can provide longer-term benefits and reduce the risk of issues like hydrolysis in flooring systems. • The ASTM is working on creating a standard specification for colloidal silica use in concrete, including performance testing. • Colloidal silica offers ease of finishing and can help prevent issues like pinholes in the concrete surface.Chapters 00:00 Introduction and Overview 03:06 Definition and History of Colloidal Silica 07:16 Differences Between Colloidal Silica and Silicates 13:15 The Importance of Using the Right Materials in Concrete 26:07 Progress Update on ASTM Standard for Colloidal Silica***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: Dr. Jon Belkowitz | Intelligent Concrete | Jon@intelligent-concrete.com Guest Website:⁠ https://www.intelligent-concrete.com/Producers: Jodi Tandett Donate & Become a Producer: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠

In this episode, Seth interviews Mike Hernandez, the Technical Director of the American Society of Concrete Contractors (ASCC), about a survey they conducted on Portland Limestone Cement (PLC). The survey aimed to understand the challenges and differences contractors were experiencing when using PLC compared to traditional cement mixes. Mike discusses the survey results, which showed increased water demand and set times, as well as changes in plastic and hardened properties. He explains that the next phase of the study involves collecting a large number of mix designs to determine what makes a mix successful with PLC. Mike encourages contractors to submit their successful mix designs to help gather more data. Takeaways • The survey conducted by ASCC and ACI on Portland Limestone Cement (PLC) revealed increased water demand and set times, as well as changes in plastic and hardened properties. • The next phase of the study involves collecting a large number of mix designs to determine what makes a mix successful with PLC. • Contractors are encouraged to submit their successful mix designs to help gather more data and understand the factors that contribute to successful PLC mixes. • PLC presents new challenges for contractors, and proper preparation, testing, and curing are crucial to achieving desired results. Chapters 00:00 Introduction and Purpose of the Podcast 03:17 Introduction to ASCC and its Role 07:03 Collecting Mix Designs for Analysis 08:58 Regional Variations in Mix Designs 11:50 Challenges with PLC in Slabs 16:37 The Impact of PLC on Curing and Finish 25:27 Variability in Responses to PLC 30:42 Call for Submission of Successful Mix Designs***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: Mike Hernandez | mhernandez@ascconline.org Guest Website:⁠ ascconline.org Submit slab mix designs: mixes@ascconline.orgProducers: Jodi Tandett

In this episode, Seth interviews Rich Szecsy, an executive in the concrete supply industry. They discuss the recent change in the batch time for concrete from 90 minutes to 120 minutes. Rich explains the history behind the 90-minute time limit and the lack of scientific justification for it. He emphasizes the importance of considering the practicality and sustainability of construction methods. They also touch on the topic of temperature specifications for concrete and the need for a more nuanced approach. Takeaways The 90-minute time limit for concrete batch time has been in place since the 1930s, but there is no scientific justification for it. The recent change to a purchaser-determined batch time allows for more flexibility and practicality in construction projects. Temperature specifications for concrete should be based on the specific conditions and requirements of each project, rather than arbitrary limits. The focus should be on building something and finding the most efficient and sustainable methods to achieve that goal. The responsibility of a concrete producer is to the purchaser, and specifications should be tailored to meet their needs and preferences. Chapters 00:00 Introduction and Background 05:34 The Change from 90 Minutes to 120 Minutes 11:05 The History and Justification of the 90-Minute Time Limit 27:48 Rethinking Temperature Specifications 38:04 Prioritizing Practicality and Sustainability 38:54 The Responsibility of Concrete Producers   *** 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: Rich Szecsy | rich.szecsy@gmail.com Guest Website:⁠ https://www.linkedin.com/in/rich-s-szecsy-phd-pe-faci-8724992/   Producers: Jodi Tandett Donate & Become a Producer: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://www.concretelogicpodc

In this episode of the Concrete Logic Podcast Seth welcomes back to the show Bill Kulish with Steelike, Inc. Bill explains the unique properties of UHPC, its durability, and its resistance to temperature variations. The conversation also covers the cost and quality control of UHPC compared to traditional concrete. The conversation delves into the differences between traditional concrete and ultra-high-performance concrete (UHPC), highlighting the ingredients, handling, and performance of each. It also explores the applications and benefits of UHPC in repairs and infrastructure projects, as well as the challenges and considerations of using UHPC. The discussion concludes with a focus on the environmental and long-term performance implications of UHPC and traditional concrete. Takeaways The unique properties of UHPC, including its durability and resistance to temperature variations, make it a valuable bridge repair material. The quality control of UHPC is paramount, requiring careful consideration of the materials used and adherence to standards and specifications. Applications and benefits of UHPC in repairs and infrastructure projects. Challenges and considerations in using UHPC. Environmental and long-term performance implications of UHPC and traditional concrete. Chapters 00:00 Reducing the Carbon Footprint with Ultra-High-Performance Concrete 10:04 The Unique Properties of UHPC 27:34 Understanding Concrete Ingredients and Handling 37:39 The Selectivity of UHPC Ingredients 40:38 Applications and Benefits of UHPC in Infrastructure *** 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. Episode References Guest: Bill Kulish | Steelike, Inc. | bill@steelike.com Guest Website: https://steelike.com/ Producers: Jodi Tandett Donate & Become a Producer: https://www.concretelogicpodcast.com/support/ Music: Mike Dunton | https://www.mikeduntonmusic.com | mikeduntonmusic@gmail.com | I

In this episode, Seth interviews Alex Hall, CEO of Concrete AI, to discuss the impact of AI on the concrete industry. They explore the use of AI in concrete design, material optimization, and the challenges of carbon reduction. Alex shares insights on the future of concrete technology and its global impact. Takeaways AI is revolutionizing the concrete industry by enabling material optimization and carbon reduction. The use of AI in concrete design allows for predictive modeling of concrete performance based on raw material data. The future of concrete technology involves addressing the global impact of concrete production and consumption. The challenges of carbon reduction in the concrete industry require innovative solutions and a shift towards low-carbon concrete products. The history and evolution of concrete pumping have significantly influenced construction practices, especially in high-rise and infrastructure projects. Chapters 00:00 Revolutionizing the Concrete Industry with AI 07:30 Predictive Modeling and Material Optimization in Concrete Design 33:49 Challenges and Solutions for Carbon Reduction in 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. Donate here: https://www.concretelogicpodcast.com/support/⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ ***  Episode References Guest: Alex Hall | Concrete AI | ⁠⁠ concreteai@vsc.co Guest Website:⁠ https://www.concrete.ai/   Producers: Jodi Tandett Donate & Become a Producer: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://www.concretelogicpodcast.com/support/⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠   Music: Mike Dunton | ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://www.mikeduntonmusic.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠ | ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠mikeduntonmusic@gm

In this episode of the Concrete Logic Podcast, Seth interviews Gary Brown, a business development professional with 47 years of experience in the concrete pumping industry. They discuss the introduction to concrete pumping, its various types, operation, impact on concrete mix design, and safety considerations. Gary also shares insights on the American Concrete Pumping Association's safety initiatives and the lucrative career opportunities in concrete pumping.   Takeaways Concrete pumping is a versatile and efficient method of moving concrete, reducing labor and expediting the placement of concrete in various construction projects. The American Concrete Pumping Association (ACPA) has introduced safety initiatives to promote safer practices and reduce accidents in the concrete pumping industry. Concrete pumping offers lucrative career opportunities, with operators earning high earnings with experience and additional hours worked. The impact of concrete pumping on concrete mix design has led to the development of pump-friendly mixes, with a focus on fluidity and safety considerations. The history and evolution of concrete pumping have significantly influenced construction practices, especially in high-rise and infrastructure projects.   Chapters 00:00 Introduction to Concrete Pumping: Types and Operation 08:20 Impact of Concrete Pumping on Mix Design and Safety   *** 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: Gary Brown | R.L. McCoy | ⁠⁠ garybrown@rlmccoy.net Guest Website:⁠ ⁠ https://www.rlmccoy.net/, https://www.wearesafertogether.org/ Producer: Jodi Tandett Donate & Become a Producer: