Study on influence of lithium salts on properties of cement-based rapid repair-materials
By adding different kinds and amount of lithium salts,the influence on the setting time,compressive strength,scratch resistance performance and shore hardness of sulfoaluminate cement were studied,and the mechanism of lithium salts on the morphology of hydration products of cement was further revealed by scanning electron microscopy(SEM).The results display that the introduction of lithium salts(LiCl,Li2CO3,Li3PO4 and Li2SO4)can effectively accelerate the hydration process of cement,and the promoting order is LiCl＞Li2CO3 ≈ Li2SO4＞Li3PO4.And when the amount of Li+added is 0.1 ×10-4 mol/g,the four lithium salts have the highest improvement in the early strength of sulfoaluminate cement.
万方数据
维普
