Study on performance of silicates-base cement system blending sulphoaluminate cement clinker

The effect of sulphoaluminate cement on the performance of Portland cement was studied. The early strength of Portland-based composite cement is increased by the addition of proper amount of sulphoaluminate cement and gypsum. The setting time of studied cement is reduced as the amount of additive increased. By means of XRD and other measurements, the mechanism of performance modification of this composite cement was studied. The AFt and aluminate gel formed during hydation, mainly cause the strengh increasing and setting time reducing.