工业废石膏与水泥配合加固软土地基  

SOFT SOIL CONSOLIDATION BY THE MIXTURE OF INDUSTRIAL WASTE GYPSUM AND CEMENT

作　　者：黄新[1] 胡同安 

机构地区：[1]北京航天航空大学土木系,北京100088

出　　处：《建筑技术》2001年第3期161-163,共3页Architecture Technology

摘　　要：利用工业废石膏与水泥配合加固软土地基 ,与单用水泥加固相比 ,加固土强度可成倍提高。废石膏的最佳掺量一般为水泥用量的20 %左右。用废石膏 -水泥加固时 ,其水化物中不仅有水化硅酸钙将松散的土粒胶结成整体 ,而且还产生大量钙矾石 ,其晶体膨胀填充孔隙 ,使加固土强度进一步提高。Improved soil strength by the mixture of waste gypsum and cement may be double that by mere cement. Optimal waste gypsum mixed is roughly 20% of cement by weight. When the method is adopted, in the hydrates of waste gypsum-cement, not only calcium silicate hydrate cementing loose soil particles together, but ettringite is produced by the reaction of cement with gypsum. It can expanse and fill up pores in the soil and then improve soil strength further.

关 键 词：工业废石膏 水泥 地基加固 软土地基 

分 类 号：TU471.8[建筑科学—结构工程]