工业废石膏在地基加固中的应用  

UTILIZATION OF INDUSTRIAL WASTE GYPSUM IN SOIL STABILIZATION

作　　者：黄新[1] 胡同安[1] 

机构地区：[1]冶金部建筑研究总院,北京100088

出　　处：《环境工程》1999年第6期75-77,共3页Environmental Engineering

摘　　要：研究和实践表明: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,加固土强度可以成倍提高。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,其水化物不仅有与水泥相同的水化硅酸钙将松散的土粒胶结成整体,而且还产生钙矾石,其晶体膨胀填充孙隙使加固土强度进一步提高。利用废石膏加固地基不会产生二次污染。Combining industrial waste gypsum with cement to stabilize soft soil enables the strength of the stabilized soil to increase greatly as compared with using cement only.The optimal amount of gypsum is about 20% of cement by weight. In the hydrates of waste gypsum cement, in addition to calcium silicate hydrate cementing loose soil particles together,there is a lot of ettringite produced by the reaction of cement with gypsum.It's expansion fills up pores making the stregth further increase. Utilizing industrial waste gypsum in soil stabilization does not bring secondary pollution..

关 键 词：工业废石膏 水泥 地基加固 配合 软土地基 

分 类 号：TU472.99[建筑科学—结构工程]