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EP #168: Are We Mishandling Concrete Admixtures?
Season 1
Episode 168
Published 10 hours ago
Description
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ON THIS EPISODE OF THE CONCRETE LOGIC PODCAST
What happens when an admixture reaches the concrete producer in a different condition than when it left the manufacturer?
Seth is joined by Concrete Bob Higgins to discuss how heat, cold, microbial growth, separation, and poor storage or transportation can affect water-based admixtures before they enter the mix.
They examine how admixtures may change during shipping or storage, why producers should watch for unusual odors, color changes, solids, scum, or consistency changes, and why manufacturers should provide clear handling requirements.
Before blaming the cement, weather, batch plant, or contractor for a concrete problem, should we first ask what happened to the admixtures?
WHAT YOU’LL LEARN
(00:00) Why admixture handling matters
(03:00) Concrete Logic Academy and a new learning game
(04:16) Are we mishandling concrete admixtures?
(05:21) Cascading effects when admixtures are combined
(06:10) Biocides, heat, and microbial growth
(08:20) What a spoiled admixture may look and smell like
(10:26) Cold-weather storage and water-based products
(12:17) Why Bob wants better shipping quality control
(15:06) Storage temperature and the condition of the product
(17:12) Seth questions what happens during normal transportation
(18:21) Why simply increasing the dosage may not solve the problem
(20:20) Are admixtures tested under real jobsite conditions?
(21:28) Checking microbial-growth claims with AI
(24:06) Refrigerated shipping and controlled storage
(25:53) Separation, crystallization, and dosing consistency
(28:05) Get the manufacturer’s requirements in writing
(28:51) Smell it, inspect it, and do not ignore warning signs
(29:45) Bob’s practical advice for ready-mix producers
GUEST INFO
Robert "Concrete Bob" Higgins
Guest link:
https://www.concretelogicpodcast.com/guests/robert-higgins/
CONCRETE LOGIC ACADEMY
Concrete chemistry gets complicated quickly when one change affects everything else in the mix.
Understanding why an admixture works, how it should be handled, and what can interfere with its performance gives you a better foundation for solving concrete problems instead of guessing.
Concrete Logic Academy provides practical concrete education, professional-development courses, and real-world lessons
ON THIS EPISODE OF THE CONCRETE LOGIC PODCAST
What happens when an admixture reaches the concrete producer in a different condition than when it left the manufacturer?
Seth is joined by Concrete Bob Higgins to discuss how heat, cold, microbial growth, separation, and poor storage or transportation can affect water-based admixtures before they enter the mix.
They examine how admixtures may change during shipping or storage, why producers should watch for unusual odors, color changes, solids, scum, or consistency changes, and why manufacturers should provide clear handling requirements.
Before blaming the cement, weather, batch plant, or contractor for a concrete problem, should we first ask what happened to the admixtures?
WHAT YOU’LL LEARN
- Why Bob believes stacking admixtures can create cascading chemical effects in concrete
- How microbial growth may change the condition and performance of water-based admixtures
- Why biocides are used in some admixture formulations
- How high storage temperatures may affect microbial protection
- What odor, color, viscosity, sediment, or surface growth may indicate about an admixture
- Why transportation and warehouse conditions matter before an admixture reaches the batch plant
- Seth’s concern about admixtures traveling through unconditioned trucks and storage containers
- Why adding more of a damaged or altered admixture may create additional problems
- How cold temperatures may contribute to separation, crystallization, or inconsistent dosing in some formulations
- Why Bob recommends getting storage and handling requirements from manufacturers in writing
- What ready-mix producers should inspect before using an admixture that appears different than expected
(00:00) Why admixture handling matters
(03:00) Concrete Logic Academy and a new learning game
(04:16) Are we mishandling concrete admixtures?
(05:21) Cascading effects when admixtures are combined
(06:10) Biocides, heat, and microbial growth
(08:20) What a spoiled admixture may look and smell like
(10:26) Cold-weather storage and water-based products
(12:17) Why Bob wants better shipping quality control
(15:06) Storage temperature and the condition of the product
(17:12) Seth questions what happens during normal transportation
(18:21) Why simply increasing the dosage may not solve the problem
(20:20) Are admixtures tested under real jobsite conditions?
(21:28) Checking microbial-growth claims with AI
(24:06) Refrigerated shipping and controlled storage
(25:53) Separation, crystallization, and dosing consistency
(28:05) Get the manufacturer’s requirements in writing
(28:51) Smell it, inspect it, and do not ignore warning signs
(29:45) Bob’s practical advice for ready-mix producers
GUEST INFO
Robert "Concrete Bob" Higgins
Guest link:
https://www.concretelogicpodcast.com/guests/robert-higgins/
CONCRETE LOGIC ACADEMY
Concrete chemistry gets complicated quickly when one change affects everything else in the mix.
Understanding why an admixture works, how it should be handled, and what can interfere with its performance gives you a better foundation for solving concrete problems instead of guessing.
Concrete Logic Academy provides practical concrete education, professional-development courses, and real-world lessons