矿物掺合料改性磷酸镁水泥研究进展

在总结磷酸镁水泥水化产物、水化速度、孔结构、流动性和物理力学性能等的基础上,综述了粉煤灰、矿渣、硅灰、赤泥和偏高岭土等矿物掺合料对磷酸镁水泥的改性效果和作用机理。矿物掺合料改性磷酸镁水泥具有优异的物理力学性能和经济性,耐水性、严苛条件下耐久性、负温下水化硬化特征和矿物掺合料改性机制等课题尚待深入研究,以期为促进磷酸镁水泥及其修补砂浆在重点工程中的应用提供参考。

Research progress on magnesium phosphate cement modified by mineral admixtures

Based on the summary of hydration products,hydration rate,pore structure,fluidity and physical and mechanical properties of magnesium phosphate cement（MPC）,modification effect and action mechanism of mineral admixtures such as fly ash,slag,silica fume,red mud and metakaolin on magnesium phosphate cement were reviewed.MPC modified by mineral admixtures has excellent physical mechanical properties and economical.The indepth study of the following topics,such as water resistance,durability under severe conditions,hydration and hardening characteristics at negative temperature and modification mechanism of mineral admixtures need to be further studied,which would be helpful to promote the engineering application of MPC and its repair mortar in key projects.