Portland Cement Replacement

This lecture discusses the replacement of Portland cement with various materials to improve concrete performance, including lower heat output, higher mechanical resistance, and reduced porosity. It covers different types of cements, such as blast furnace cement, pozzolanic cement, and composite cement, as well as the addition of special binders and the properties of hydraulic materials like blast furnace slag. The lecture also explores the use of pozzolans, such as fly ash and silica fume, in concrete production, highlighting their reactivity and advantages in reducing thermal cracking and improving workability.