Under the addition amount of cement keeping 5wt .% ,the triaxial compression tests are performed in different curing period and confining pressure .The results show that the mix proportion ,confining pressure and curing period all will affect the shear strength and deformation characteristics of mixed soils .By comparing all the different test results ,the optimum proportion of the blast furnace slag and fly ash is found out to be about 3∶7 under the condition of keeping the addition amount of blast furnace slag and fly ash being 15wt .% and the addition amount of cement being 5wt .% ,which could provide the essential data and theoretical support for later correlation research and application .%在水泥含量保持5％的条件下，进行了不同龄期和围压下的固结排水三轴压缩试验。结果表明：配合比、围压，龄期均对混合土料的强度和变形特性产生影响。在综合比较各试验结果基础上，在高炉矿渣、粉煤灰总含量15％条件下，得出了高炉矿渣和粉煤灰的最佳配合比约为3∶7，为以后的相关研究和应用提供了必要的数据和理论支持。
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