PREPARATION AND PROPERTIES OF LOW HYDRATION HEAT PORTLAND-CEMENT

Several types of Portland cement having different characteristics are distinguished. The most important variables are the rare of hardening, the rate and total extent of heat evolution during hydration, and the resistance of hardened cement to chemical attack by sulphate and,chlo ride solutions. The aim of the present work was to prepare three types of Portland cement, namely types I, II and IV, in the laboratory from locally available raw materials, and to study their hydration kinetic s, development of compressive strength as well as the aggressive attac k of 4 wt. % MgCl2 solution on hardened pastes of the three Portland c ements and of sulphate resisting cement pastes. The results show that the kinetics of hydration and the susceptibility to corrosion by chlor ides increase with increasing LSF of the cement.