Investigation of high-strength composite portland cement with a industrial wastes

It is one of important measures for the sustainable development of cement industry to utilize industrial wastes. High-strength composite portland cementwith a large amount of granulated blast furnace slag (GBFS), fly ash and limestone was prepared by separate grinding method, optimizing gypsum andusing activators. The total amounts of blending materials are between 45% and 65% and the strength grades of cements reach 525 or even 625 according toChinese national standard for composite portland cement. Besides setting time and strength, the hydration heat, drying shrinkage and sulfate resistance were also determined.

کلیدواژه ها:

Fly ash ، Blended cement ، High strength ، Properties