水泥土的微结构特征及分析

ANALYSIS AND MICROSTRUCTURE CHARACTERS OF CEMENT-SOIL

利用水泥作为固化剂以提高软土地基的强度 ,减少软土地基的变形 ,同时作为高层建筑深基坑的支护、防渗等 ,已经在中国沿海软土地区建设中较为普遍采用。一般通过粉喷或深层搅拌法 ,把水泥掺加拌和到软土地基中 ,使它和软土中的物质组分发生物理化学反应 ,以收到加固效果。通过对天然软土以及现场、室内的水泥土样品进行微观对比分析研究 。

Using cement as a kind of firming agent to enhance the strength of soft soil foundation and to reduce deformation of soft soil is common in coastal areas by means of deep mixing or powder spouting. The authors added cement into soft soil to increase its strength by a series of physicochemical reaction. In this paper, the mechanism of cement enhancing strength of soft soil is deeply studied and some useful conclusions are drawn through analysing samples of cement soil both in interior and field.