摘要
基于传统水泥和石灰固化处理方法,提出利用大掺量低钙粉煤灰、细砂、水泥和石灰等固化剂进行高含水率黏土固化处理的方法,以期降低黏土的含水率,达到快速降低黏土含水率以用作堤坝防护土料的目的.通过一系列室内试验,得到利用不同配比固化剂改性黏土的击实特征和减水效果.试验结果表明:黏土固化后最大干密度有所降低,最优含水率略有下降;所设计固化材料对高含水率黏土减水效果良好,且粉煤灰掺量越大,减水效果也越好.
Based on the traditional cement-/lime-treatment, the stabilizers by using high-volume fly ash, fine sand, lime and cement are proposed to reduce the initial water content of clay and to achieve the purpose of reducing quickly the water content of clay for embankment construction. A series of laboratory tests are performed to investigate the compaction characteristics and dehydration process of high liquid limit clays. The experimental results show that the addition of designed stabilizers has a satisfactory effect on the dehydration process of used clays and causes a decrease in the optimum water content and a slight decrease in the maximum dry density compared to untreated clays.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2017年第6期855-859,共5页
Engineering Journal of Wuhan University
基金
国家自然科学基金项目(编号:51479148
51609180)
湖北省自然科学基金项目(编号:2016CFB115)
黑龙江省三江工程建设管理局科研项目(编号:SGZL/KY-15)
关键词
大掺量粉煤灰
固化
高液限黏土
击实
快速减水
high volume fly ash
solidify
high liquid limit clay
compaction
fast dehydration
