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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 and lime solidification methods, a method of solidifying high-moisture clay with curing agent such as high-calcium low-calcium fly ash, fine sand, cement, and lime is proposed to reduce the moisture content of clay and rapidly reduce the clay content. The moisture content was used for the purpose of dam earth protection. Through a series of laboratory tests, the compaction characteristics and water-reducing effect of clays modified with different proportions of curing agents were obtained. The test results show that the maximum dry density of the clay is reduced after curing. The optimum moisture content decreased slightly; the solidified material designed had good water reduction effect on clay with high water content, and the greater the fly ash content, the better the water reduction effect.