水泥基渗透结晶型防水材料的制备及性能研究

Preparation and Performance Study of Cementitious Capillary Crystalline Waterproof Materials

采用四因素三水平的正交试验方法对渗透结晶材料各组分进行优化,研制一种新型水泥基渗透结晶型防水材料。研究不同龄期基体涂刷水泥基渗透结晶型防水材料的防水效果,并对其进行机理分析。试验结果表明:结晶体可渗透距涂层表面20mm深;基体3d龄期时涂刷水泥基渗透结晶型防水材料防水效果最佳;涂刷自制防水材料的砂浆试件(带涂层)的抗渗压力比可达400%,不带涂层达到333%;涂刷防水材料的砂浆试件,其中水泥水化产物可与防水母料中的活性化学物质发生反应,生成结晶体和不溶物,堵塞毛孔,提高砂浆试件的防水性能。

A new type of cementitious capillary crystalline waterproofing material(CCCW)was prepared by using the four factors and three levels orthogonal experimental method to optimize the components of capillary crystallization materials.The waterproof effect of different age mortar matrix was studied,and the waterproof mechanism was analyzed.The results showed that the crystal can permeate 20 mm depth through the coating,and the waterproof effect of matrix was best when the CCCW material was coated on the surface of matrix on the third curing day.By coating the self-made waterproof material,the impermeability pressure ratio of mortar specimen can be 400%,and it can be 333%when the material was not coated.The crystal and precipitate can be generated when the hydration products of cement react with the active substances of waterproof masterbatch,which can block the pores and improve the waterproof performance of mortar.