methods . These benef iciated materials were used in mortar and concrete mixes to examine their comparative water demand, compressive strength, and expansion. Prehydration: The GFA as received and 200 mesh materials were prehydrated to convert the CaO to portlandite (Ca (OH) 2). It was determined that an amount of water
Cement is the world's most prevalent man made material, with approximately tons produced annually for every person on earth. It binds concrete, which is used to construct much of the built environment – including homes, schools, offices, roads, runways, tunnels and bridges.