by Seth Tandett
What is the most used manmade material on Earth? You guessed it – concrete. In each episode of Concrete Logic, we will explore one concrete-related topic with the help of industry professionals that are shaping the future of the trade. We’ll talk with suppliers, contractors, architects, engineers, specialists, and even some proponents of competing materials about their views of concrete and their vision of its future.
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Publishing Since
3/23/2022
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July 23, 2026
<p><a href="http://concreteschool.co/" target="_blank"><strong>JOIN CONCRETE SCHOOL FOR FREE AT CONCRETESCHOOL.CO!<br /></strong></a><br /><br /><strong>ON THIS EPISODE OF THE CONCRETE LOGIC PODCAST</strong><br />What happens when a concrete maturity system is built on the wrong starting temperature? Seth is joined again by Dr. Jon Belkowitz, also known as Concrete Adamus, to explain why datum temperature is one of the most important and commonly overlooked parts of the maturity method.<br /><br /><br />Jon argues that assuming, ignoring, or defaulting the datum temperature can produce the wrong strength relationship. That can lead crews to strip forms too early and create a safety risk, or wait too long and hurt the project schedule. The takeaway is simple: maturity is not just a logger, an app, and a few cylinder breaks. The datum temperature must match the actual concrete mix.<br /><br /><br /><strong>WHAT YOU’LL LEARN</strong><br />· How the maturity method approximates early-age concrete strength<br />· Why “approximate” may be a better word than “predict”<br />· What datum temperature represents in the time-temperature factor<br />· Why a default datum temperature may not match a modern concrete mix<br />· How cement type, cementitious materials, and admixtures affect maturity calculations<br />· Why an incorrect datum temperature can lead to premature form removal<br />· How an overly conservative datum temperature can delay the critical path<br />· Why datum temperature testing is separate from strength-maturity cylinder testing<br />· How mortar cubes and controlled curing temperatures are used to determine datum temperature<br />· Why winter and summer mixes may require different maturity calibrations<br />· Why additional cylinders are inexpensive compared with the consequences of poor data<br /> <br /><strong>CHAPTERS</strong><br />(00:00) Introduction and ways to support the podcast<br />(03:53) What is the concrete maturity method?<br />(07:15) Approximation versus prediction<br />(07:47) The time-temperature factor<br />(09:35) The datum temperature problem<br />(10:48) What ASTM C1074 says about datum temperature<br />(12:20) How cement type changes the maturity response<br />(14:26) The danger of using the wrong maturity curve<br />(18:57) Strength testing versus datum temperature testing<br />(20:28) The time and cost required for proper calibration<br />(21:50) Why maturity systems often assume the wrong value<br />(23:00) Mix changes, jump forms, and a field failure<br />(25:31) Cylinder testing and long-term accuracy<br />(27:12) Older maturity equipment and mix customization<br />(30:45) Final advice for using the maturity method<br /><br /><br /><strong>GUEST INFO</strong><br />Dr. Jon Belkowitz<br /> Intelligent Concrete<br />Guest link: <a href="https://www.concretelogicpodcast.com/guests/dr-jon-belkowitz/" target="_blank">https://www.concretelogicpodcast.com/guests/dr-jon-belkowitz/</a><br /> <br /><br /><strong>CONCRETE LOGIC ACADEMY</strong><br />A maturity reading can look precise and still be wrong.<br /> <br />Concrete Logic Academy helps you understand what sits behind the number, including datum temperature, mix changes, testing, and the field decisions that affect safety and schedule.<br /> <br />Learn how to question the default before the default creates a problem. Start learning here: <a href="https://concreteschool.co" target="_blank">https://concreteschool.co</a><br /> <br /><strong>SUPPORT THE PODCAST</strong><br />If the Concrete Logic Podcast gives you value, send a little value back.<br /><br />You can support the show here:<br /> <a href="https://www.concretelogicpodcast.com/donate" target="_blank">https://www.concretelogicpodcast.com/donate</a><br /><br />You can also support the show through the KUIU affiliate link:<br /> <a href="https://www.concretelogicpodcast.com/kuiu" target="_blank">https://www.concretelogicpodcast.com/kuiu</a><br /><br />Want to connect your company with concrete professionals who care about education, field performance, and better decision-making?<br /><br />Become a Concrete Logic Industry Partner:<br /> <a href="https://www.concretelogicpodcast.com/sponsor" target="_blank">https://www.concretelogicpodcast.com/sponsor<br /></a><br />Interested in sponsoring the podcast or working with Concrete Logic Media?<br />Email Seth: seth@concretelogicpodcast.com<br /><br /><br /><strong>CREDITS</strong><br />Producers: Jodi Tandett and Concrete Logic Media<br /><br />Music by: Mike Dunton<br /> <a href="https://www.mdunton.com/" target="_blank">https://www.mdunton.com/<br /></a><br /><strong>WHERE TO FIND SETH</strong><br /><br />Concrete Logic Podcast:<br /> <a href="https://www.concretelogicpodcast.com/" target="_blank">https://www.concretelogicpodcast.com/</a><br /><br />YouTube:<br /> <a href="https://www.youtube.com/@concretelogicpodcast" target="_blank">https://www.youtube.com/@concretelogicpodcast</a><br /><br />LinkedIn:<br /> <a href="https://www.linkedin.com/in/seth-tandett/" target="_blank">https://www.linkedin.com/in/seth-tandett/</a><br /><br />Concrete Logic Academy:<br /> <a href="https://www.concretelogicacademy.com/" target="_blank">https://www.concretelogicacademy.com/</a><br /><br /><strong>Until next time, let’s keep it concrete.</strong><br /><br /></p>
July 14, 2026
<p><a href="http://concreteschool.co/" target="_blank"><strong>JOIN THE ACADEMY! VISIT CONCRETESCHOOL.CO TO START LEARNING TODAY.<br /></strong></a><br /><br /><strong>ON THIS EPISODE OF THE CONCRETE LOGIC PODCAST<br /></strong>Are we specifying air entrainment in concrete that does not need it?<br /><br /><br />Seth is joined by Dr. Bruno Fong Martinez, Baker Construction’s concrete materials expert, to examine when air entrainment protects concrete and when it creates unnecessary problems.<br /><br /><br />Air entrainment improves durability where concrete experiences repeated freezing, thawing, and moisture saturation. But Bruno argues that the industry often requires it in climates where that exposure does not exist.<br /><br /><br />That decision can reduce compressive strength, complicate testing, change mix performance, and contribute to rejected trucks and wasted material.<br /><br /><br />The conversation challenges engineers and contractors to move beyond copied specifications and evaluate air requirements based on the actual environment, exposure, and project risk.<br /><br /><br /><strong>WHAT YOU’LL LEARN</strong><br /> · The difference between entrapped air and entrained air<br /> · How air voids help protect saturated concrete during freezing<br /> · Why freeze-thaw damage depends on repeated freezing and thawing cycles<br /> · Why colder locations do not always experience the most freeze-thaw damage<br /> · How air entrainment complicates concrete production and acceptance testing<br /> · Why air content can change during transportation, mixing, and pumping<br /> · How additional air can reduce compressive strength<br /> · Why strength loss may lead to more cement and greater thermal concerns<br /> · How freezing and precipitation maps could improve regional specifications<br /> · Why copied specifications can require air in environments that do not need it<br /> · How early specification reviews and RFIs can reduce waste and concrete problems<br /><br /><br /><strong>CHAPTERS</strong><br /> (00:00) Introduction and support for the show<br /> (03:34) Why unnecessary air entrainment matters<br /> (05:07) Where air may and may not be necessary<br /> (06:27) Entrapped air versus entrained air<br /> (09:21) How air protects concrete during freezing<br /> (11:40) Why freeze-thaw cycles matter<br /> (12:48) Testing, rejected trucks, and concrete waste<br /> (14:41) Strength loss and contractor concerns<br /> (16:05) What happens to air during pumping<br /> (17:22) Mapping freezing and saturation risk<br /> (19:24) Why copied specifications create problems<br /> (22:15) Building industry agreement around air entrainment<br /> (24:25) Guest information and final takeaways<br /><br /><br /><strong>GUEST INFO</strong><br /> Dr. Bruno Fong Martinez<br /> Concrete Materials Expert<br /> Baker Construction<br /> Guest link:<br /> <a href="https://www.concretelogicpodcast.com/guests/bruno-fong-martinez/" target="_blank">https://www.concretelogicpodcast.com/guests/bruno-fong-martinez/<br /></a><br /><br /><strong>CONCRETE LOGIC ACADEMY</strong><br /> The people who understand concrete are the people who get listened to.<br /> Not the loudest person in the meeting.<br /> Not the person copying requirements from an old specification.<br /> The person who understands why a material or testing requirement belongs in the concrete usually has the most valuable voice in the room.<br /> That is what Concrete Logic Academy is built for.<br /> You get practical concrete education, professional-development courses, and real-world lessons connected to the same materials, durability, and construction problems discussed on the Concrete Logic Podcast.<br /> Start learning here: <a href="https://concreteschool.co" target="_blank">https://concreteschool.co</a><a href="https://concreteschool.co/" target="_blank"><br /></a><br /><br /><strong>SUPPORT THE PODCAST</strong><br /> If the Concrete Logic Podcast gives you value, send a little value back.<br /> You can support the show here:<br /> <a href="https://www.concretelogicpodcast.com/support/" target="_blank">https://www.concretelogicpodcast.com/support/</a><br /> You can also support the show through the KUIU affiliate link:<br /> <a href="https://www.concretelogicpodcast.com/kuiu" target="_blank">https://www.concretelogicpodcast.com/kuiu</a><br /> Interested in sponsoring the podcast or working with Concrete Logic Media?<br /> Email Seth:<br /> seth@concretelogicpodcast.com<br /><br /><br /><strong>CREDITS</strong><br /> Producers: Zac Richardson, Jodi Tandett and Concrete Logic Media<br /> Music by: Mike Dunton<br /> <a href="https://www.mdunton.com/" target="_blank">https://www.mdunton.com/<br /></a><br /><br /><strong>WHERE TO FIND SETH</strong><br /> Concrete Logic Podcast:<br /> <a href="https://www.concretelogicpodcast.com/" target="_blank">https://www.concretelogicpodcast.com/</a><br /> YouTube:<br /> <a href="https://www.youtube.com/@concretelogicpodcast" target="_blank">https://www.youtube.com/@concretelogicpodcast</a><br /> LinkedIn:<br /> <a href="https://www.linkedin.com/in/seth-tandett/" target="_blank">https://www.linkedin.com/in/seth-tandett/</a><br /> Concrete Logic Academy:<br /> <a href="https://www.concretelogicacademy.com/" target="_blank">https://www.concretelogicacademy.com/<br /></a><br /><br />Until next time, let’s keep it concrete.</p>
July 2, 2026
<a href="https://www.concreteschool.co" target="_blank"><strong>JOIN THE ACADEMY! VISIT CONCRETESCHOOL.CO TO START LEARNING TODAY.</strong> <br /></a><br /><strong>ON THIS EPISODE OF THE CONCRETE LOGIC PODCAST</strong> <br />Does exterior concrete always need entrained air to survive freezing and thawing? <br /><br />Seth is joined by Jason Adams, founder and CEO of Mega Slab, to challenge that long-standing practice. Jason argues that a properly designed, highly dense concrete system may limit water intrusion enough to reduce the need for entrained air. <br /><br />Seth presses on the risks, including mix design, workability, finishing, curing, and specification requirements. Jason makes clear that he is not recommending contractors simply remove air from a standard mix. His approach depends on treating the concrete as a complete system. <br /><br />The episode asks a practical question: Should exterior concrete be designed to give freezing water room to expand, or should the priority be keeping water out in the first place? <br /><br /><strong>WHAT YOU’LL LEARN</strong> <br /><ul><li>What air entrainment is intended to do during freeze-thaw exposure</li><li>The difference between entrained air and naturally entrapped air</li><li>Why Jason believes entrained air can reduce concrete density</li><li>How dense concrete may limit water and chloride intrusion</li><li>Why removing air from a standard exterior mix is not enough</li><li>How aggregate packing and optimized mix designs affect permeability</li><li>Why air-entrained concrete should not be hard-trowel finished</li><li>How entrained air can affect workability and finishing</li><li>Why specifications and established practices may resist this approach</li><li>What field performance Jason has observed in Midwestern pavements</li><li>Why mix design, placement, finishing, curing, and fibers must work as a system</li></ul> <br /><strong>CHAPTERS</strong><br /> (00:00) Introduction and support for the show<br /> (03:24) Jason Adams and the air-void question<br /> (04:56) Freeze-thaw testing and ASTM standards<br /> (05:46) What air entrainment is designed to do<br /> (07:26) Jason challenges the traditional approach<br /> (08:52) Can dense concrete keep water out?<br /> (11:37) Designing a mix without entrained air<br /> (12:58) Why air-entrained concrete should not be troweled<br /> (14:47) A problematic exterior pavement example<br /> (16:23) Seth asks about the tradeoffs<br /> (17:49) Workability, finishing, and industry pushback<br /> (20:06) Protecting the concrete surface<br /> (22:01) Why this must be treated as a complete system<br /> (23:24) How to connect with Jason Adams<br /> <br /><strong>GUEST INFO</strong><br /> Jason Adams<br /> Founder and CEO<br /> Mega Slab<br /> Guest link:<br /> <a href="https://www.concretelogicpodcast.com/guests/jason-adams/" target="_blank">https://www.concretelogicpodcast.com/guests/jason-adams/</a><br /> <br /><strong>CONCRETE LOGIC ACADEMY</strong><br /> The people who understand concrete are the people who get listened to.<br /> <br />Not the loudest person in the meeting.<br /> <br />Not the person saying, “We have always done it this way.”<br /> <br />The person who understands why air, water, density, finishing, and curing affect performance usually has the most valuable voice in the room.<br /> <br />That is what Concrete Logic Academy is built for.<br /> <br />You get practical concrete education, professional-development courses, and real-world lessons connected to the topics covered on the Concrete Logic Podcast.<br /> <br />Start learning here: <a href="https://concreteschool.co" target="_blank">https://concreteschool.co</a><br /> <br /><strong>SUPPORT THE PODCAST</strong><br /> If the Concrete Logic Podcast gives you value, send a little value back.<br /> <br />You can support the show here:<br /> <a href="https://www.concretelogicpodcast.com/support/" target="_blank">https://www.concretelogicpodcast.com/support/</a><br /> <br />You can also support the show through the KUIU affiliate link:<br /> <a href="https://www.concretelogicpodcast.com/kuiu" target="_blank">https://www.concretelogicpodcast.com/kuiu</a><br /> <br />Interested in sponsoring the podcast or working with Concrete Logic Media?<br /> <br />Email Seth: seth@concretelogicpodcast.com<br /> <br /><strong>CREDITS</strong><br /> Producers: Jodi Tandett and Concrete Logic Media<br /> <br />Music by: Mike Dunton<br /> <a href="https://www.mdunton.com/" target="_blank">https://www.mdunton.com/</a><br /> <br /><strong>WHERE TO FIND SETH</strong><br /> Concrete Logic Podcast:<br /> <a href="https://www.concretelogicpodcast.com/" target="_blank">https://www.concretelogicpodcast.com/</a><br /> <br />YouTube:<br /> <a href="https://www.youtube.com/@concretelogicpodcast" target="_blank">https://www.youtube.com/@concretelogicpodcast</a><br /> <br />LinkedIn:<br /> <a href="https://www.linkedin.com/in/seth-tandett/" target="_blank">https://www.linkedin.com/in/seth-tandett/</a><br /> <br />Concrete Logic Academy:<br /> <a href="https://www.concretelogicacademy.com/" target="_blank">https://www.concretelogicacademy.com/</a><br /> <br />Until next time, let’s keep it concrete.
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What is the most used manmade material on Earth? You guessed it – concrete.
In each episode of Concrete Logic, we will explore one concrete-related topic with the help of industry professionals that are shaping the future of the trade. We’ll talk with suppliers, contractors, architects, engineers, specialists, and even some proponents of competing materials about their views of concrete and their vision of its future.
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