Natural Pozzolans
Heat evolution curve in 6:4 C 3 S-pozzolana blends (22). V, F, R, and S are natural pozzolans, T is fly ash. w/b = 0.4. Full size image. Hydration of Pozzolan-Cement Mixture. Hydration of cement containing clinker and gypsum with natural pozzolans is rather complicated. The reason is the different rate of reaction of clinker and gypsum …