Masonry Cement Minus the Portland

MRT E-Z Joint™ cements consist of about 85% fly ash, combined with various additives. In the Atlanta area, where is it produced, MRT E-Z Joint products are cost-competitive with standard masonry cement. As the company expands into additional locations, more projects will have the option of building masonry walls without the environmental burdens (primarily high embodied energy) of Portland cement.

Standard masonry cement is about 50–75% clinker from cement kilns, along with limestone, clays, gypsum, retarders, and air-entraining agents. Using Type-C fly ash (which, unlike Type F, has cementitious properties of its own—see