EP #139: Concrete Reality Check - INDOT Calls Out the Cement Industry

Concrete Logic Podcast · Nov 18, 2025 · 39m

Indiana just told the cement industry it won’t accept any blended cement with more than 10% limestone.

That’s a first - and it’s not sitting well with the people who pushed Type IL cement in the first place.

For the first time, a state DOT pushed back on Type IL cement—and the industry fired back. Indiana’s Department of Transportation says it’s protecting performance after bridge decks started scaling. The American Cement Association says the DOT’s new limits are unnecessary, confusing, and unscientific. So, who’s right—and what does it mean for the rest of the country’s concrete?

What…