离子土壤固化剂加固红色粘土的比表面积研究  

Experimental study on specific surface area of red clay strengthened by ISS

作　　者：卢雪松[1,2] 项伟[2] 

机构地区：[1]黄冈师范学院,湖北黄冈438000 [2]中国地质大学(武汉)工程学院,湖北武汉430074

出　　处：《人民长江》2011年第1期83-86,共4页Yangtze River

基　　金：国家自然科学基金(40972185)

摘　　要：采用离子固化剂对武汉市区红色粘土进行加固,并取其土样对加固后土体的塑性指数、比表面积和粘土颗粒间结合水的变化进行了研究。试验结果表明:红色粘土在加入ISS后,其塑性指数都有不同程度的降低,其塑性指数最低可控制在29%左右。比表面积减少,降幅达13.47%。最后,从ISS影响粘土颗粒双电层结构的方面,对ISS加固土的机理进行了分析。We use ISS to strengthen the red clay in Wuhan City and take samples to conduct experimental study on the change of plasticity index,specific surface area and bound water between clayey particles of the strengthened soil.The results show that the plasticity indexes of the red clayey soil mixed with ISS decrease in varying degrees,and the lowest plasticity index can be controlled to about 29%;the specific surface area decrease as well with amplitude of 13.47%.We analyze the strengthening mechanism of ISS from the influences of ISS on the clay particles＇ structure of electric double-layer.

关 键 词：离子土壤固化剂 红色粘土 固化机理 比表面积 双电层 结合水 

分 类 号：P619.231[天文地球—矿床学]