Experimental research on the properties of modified MPC

Magnesium phosphate cement (MPC) was modified by fly ash, silica fume and re-dispersible latex powder and the properties of modified MPC, such as fluidity, setting time and compressive strength, were tested in the paper. Based on the results, the contents of 50% fly ash, 10% silica fume and 2% re-dispersible latex powder were chosen to modify MPC and the property of water resistance is studied. The experimental results show that the different modified materials can influence the properties of MPC. The addition of fly ash can prolong the setting time and improve the strength greatly. The addition of silica fume can improve the water resistance of MPC only. The addition of re-dispersible latex powder can prolong the setting time and improve the water resistance of MPC.