混凝土渗透结晶材料渗透深度与混凝土龄期的关系

摘要

In order to study chemical action on composition of concrete, reaction crystallization and penetration depth of active ion for active component of permeated crystalline materials. Penetration depth of permeated crystalline materials in concrete had been determined with Scanning Electron Microscopy and X-ray. The results showed that the main diffraction peak of the mortar with permeated crystalline materials had no change, but relative intensity of peak had change. Reaction crystallization of active component in permeated crystalline materials and Ca(OH)2 in concrete permeated in crack of concrete. And penetration depth increased with increasing of ages. A few of crystallization can be reached 120 mm at the age of 180 d.%为研究混凝土渗透结晶材料中活性组分对混凝土组成的化学作用,反应可能生成的结晶产物及活性离子的渗透深度.利用扫描电镜和X衍射仪测定渗透结晶材料在混凝土中的渗透深度.结果表明,掺有渗透结晶材料的水泥浆中各主要衍射峰没有发生变化,只是峰的相对强度发生了变化.渗透结晶防水材料中的活性化学物质与Ca(OH)2生成的结晶体,能很好地渗入混凝土微裂缝中,渗透深度随龄期的增长而逐渐加深.龄期为180d时,在120mm处可见少量结晶体.