Study on a cementing system taking alite-calcium barium sulphoaluminate as main minerals

A mineral system of alite-calcium barium sulphoaluminate with high cementing characteristic was synthesized with chemical reagents. The influences of the mineral constituent, sintering temperature and some microelements on the performance of the clinker system were studied. Alite and calcium barium sulphoaluminate minerals can be synthesized at 1360∘C synchronously and can coexist in a clinker system. The suitable content of calcium barium sulphoaluminate in the clinker is less than 10 wt%. The compressive strength of some clinkers is nearly 90 MPa at 28 days age. The constituent, structure and morphology of the clinker minerals were analysized by means of XRD, SEM-EDS and light microscope.