Geopolymer mortar system in the U.S. Army

September 2016

The U.S. Army Engineer Research and Development Center and Fort Bragg’s Directorate of Public Works demonstrated and validated the performance characteristics of a new geopolymer mortar liner system for culvert rehabilitation at Simmons Army Airfield, North Carolina.

This rehabilitation technique uses geopolymer mortars that are often from the aluminosilicate family and are blended with Portland cement. This geopolymer mortar formulation can be centrifugally cast to reline pipelines while minimizing disruption to the installation by eliminating the need to dig up and replace existing pipelines and culverts. The material offers rapid cure times, higher strength, and reduced porosity as compared to traditional mortar and concrete.

The EcoCast process should be seriously considered by all Army organizations when planning to repair or rehabilitate deteriorated storm culverts, and storm or sanitary pipes. In particular, this is a very useful process to use when structures are located beneath roadways, since digging up the road is avoided.

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