Missouri S&T professor Mohamed ElGawady (center) and S&T students are studying making concrete with fly ash instead of Portland cement.
Joann Stiritz/Missouri S&T Missouri S&T professor Mohamed ElGawady (center) and S&T students are studying making concrete with fly ash instead of Portland cement.

Dr. Mohamed ElGawady, associate professor of civil, architectural and environmental engineering at Missouri S&T, is testing mixtures of concrete made with fly ash that can be more durable, strong and resilient than concrete using ordinary Portland cement (OPC).

Using zero cement (ZC) concrete is expected to improve the durability and performance of Missouri Department of Transportation (MoDOT) concrete bridges and extend their useful service life beyond the typical 75 years, ElGawady says. Using zero cement concrete will also improve the sustainability of MoDOT structures. The mixtures that will be developed as part of the study will allow MoDOT to use ZC concrete to address shrinkage cracking and freeze/thaw damage that is currently experienced with conventional concrete mixtures.

Read more >