EP #129: What Hoover Dam Concrete Can Teach Us Today
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Show Notes
What if the answer to today’s concrete durability and sustainability challenges isn’t new—but something we left behind decades ago?
In Episode #129 of the Concrete Logic Podcast, host Seth Tandett talks with Joseph E. Thomas, Executive Director of the Natural Pozzolan Association, about a material used in the Hoover Dam and Roman aqueducts: natural pozzolans. Joseph explains how these natural pozzolans are making a quiet comeback and why they may deserve another look.
What You'll Learn:
- What exactly are natural pozzolans, and how do they compare to fly ash?
- Can natural pozzolans genuinely enhance concrete durability?
- Why have iconic structures like the Pantheon and Hoover Dam relied on natural pozzolans?
- What are the realistic limitations, such as water demand and regional availability?
- How natural pozzolans stack up against traditional cement and fly ash.
- Emerging trends and the growing role of activated pozzolans in construction.
Chapters:
00:00 - Intro
02:15 - Understanding Natural Pozzolans
07:30 - Historical Examples & Real-World Performance
14:05 - Benefits vs. Limitations in Today's Market
20:20 - Challenges: Water Demand & Availability
27:50 - Where Natural Pozzolans Fit in Future Projects
33:15 - Summary & Closing Thoughts
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Guest Information:
Joseph E. Thomas
Executive Director, Natural Pozzolan Association
Website: https://www.naturalpozzolan.org
Email: [email protected]
Producer: Jodi Tandett
Music by: Mike Dunton (Instagram: @Mike_Dunton)
Stay Connected & Watch More!
Host: Seth Tandett
Email: [email protected]
LinkedIn: https://www.linkedin.com/in/seth-tandett/
YouTube: https://www.youtube.com/@concretelogicpodcast
Website: https://www.concretelogicpodcast.com
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