UTILIZATION OF THE AIR-COOLED SLAG WITH DEALUMINATED KAOLIN IN THE PREPARATION OF BLENDED CEMENTS

This work focuses on measuring of pozzolanic activity of some industrial waste by-products such as air- cooled slag and dealuminated kaolin. The feasibility of recycling these materials in building materials and their hydration mechanisms were also investThe effect of addition (5, 10, 15, and 20 wt.%) lime on the pozzolanic activity of air-cooled slag was investigated. The degree of hydration of air – cooled slag /lime pastes was studied by the determination of chemically combined water, free lime, and frThe effect of addition of slag to Portland cement at 5, 10, 15, and 20 wt. % was also studied. It was recommended that the addition of cement increases the combined water content especially at higher Portland cement content and the free lime increases up