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137
Oct. 28, 2025

EP #137: Silica Fume vs. Colloidal Silica in Concrete - Which One Really Performs?

What happens when the concrete industry’s “wonder dust” meets its high-tech rival? In this episode of the Concrete Logic Podcast, host Seth Tandett brings back Dan McCoy and Dr. Jon Belkowitz to challenge everything we thought we knew about silica fume. From bridge deck overlays that crack like eggshells to the real CO₂ math no one wants to talk about, the guys separate hype from chemistry and ask the only question that matters: What are we really asking this concrete to do? What You’ll Learn ...
104
Nov. 14, 2024

EP #104: Tackling Concrete's Fly Ash Problem

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 concret...
97
Sept. 3, 2024

EP #097: The Power of Hyrdogels in Concrete Restoration

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 ...
Guest: Dan McCoy
64
Oct. 26, 2023

EP #064: Nano Concrete

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 t...
Guest: Dan McCoy
53
June 29, 2023

EP #053: Colloidal Silica: Concrete's Next SCM

🎙️🔊 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 tack...
50
June 8, 2023

EP #050: Polishing Concrete 101

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 br...
41
March 9, 2023

EP #041 - Typical Concrete Vapor Barrier Detail Defies Science

Are we detailing the placement of vapor barrier in the typical slab-on-ground design all wrong? When moisture develops on a concrete surface, where is it coming from? Below the surface or above? Bob Higgins, a concrete and waterproofing expert, joins the podcast to help us answer these questions. We discuss extensively the science of how water vapor is created and why today's concrete must be internally cured to perform its best. If you want to learn about another controversial topic in the conc...
9
June 9, 2022

EP #009: Concrete Gets Hydrophobic

In this episode of the Concrete Logic podcast, we brought on Brent Rollins and Scott DiLoreto from Spray-Lock to discuss colloidal silica. If you are like most folks, you probably never heard of colloidal silica (CS). It is a product that can be sprayed on concrete during concrete placement or long after the concrete is cured. It can even be used as an additive to ready-mix concrete. Once CS is applied to the concrete, it penetrates and fills up the microscopic (nano) voids it finds in the conc...