Abstract

The influence of MgO on the formation of Ca 3SiO 5 and 3CaO·3Al 2O 3·CaSO 4 minerals in alite–sulphoaluminate cement is reported in this paper. The results show that adding a suitable amount of MgO can lower the clinkering temperature, promote the formation of Ca 3SiO 5 and 3CaO·3Al 2O 3·CaSO 4 minerals, and help in the coexistence of the two minerals in the clinker. MgO may obviously decrease the formation of Ca 3Al 2O 6, and increase the SiO 2 content incorporated into the interstitial phase.

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