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Heading: LEED Concrete and Construction
Has anyone run into any issues regarding LEED credits and concrete? To be more specific, LEED mixes generally use pozzolans which typically decrease the 7 day breaks. Rarely does a specification call for a 7 day strength requirement, but the general industry standard is 70% in 7 days.

We all know how nervous folks can get when they see a low 7 day break. It can significantly impact the schedule of the project as well.

So, my question is, what is the industry's standpoint regarding this issue? What has worked for some of you, and are you seeing similar issues on projects that you are currently working?

Thanks, and I appreciate everyones response.

Jonathan Harrell
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