In this episode, Seth interviews Rich Szecsy, an executivein 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 andsustainability 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 timehas been in place since the 1930s, but there is no scientific justification for it.
• The recent change to a purchaser-determined batchtime allows for more flexibility and practicality in construction projects.
• Temperature specifications for concrete shouldbe based on the specific conditions and requirements of each project, ratherthan arbitrary limits.
• The focus should be on building something andfinding the most efficient and sustainable methods to achieve that goal.
• The responsibility of a concrete producer is tothe 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

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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

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Host: Seth Tandett, ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠seth@concretelogicpodcast.com⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠

Host LinkedIn: ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠https://www.linkedin.com/in/seth-tandett/⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠

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