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通过对水泥灰土不同含盐量试样进行一系列三轴不固结不排水剪切试验,探讨含盐量、围压、浸泡时间、配比对水泥灰土剪切强度参数的影响,并从微观结构性上做出合理的解释。试验结果发现:水泥灰土强度参数c、φ均受含盐量等因素影响,而且强度参数c、φ可以由含盐量定量表示;水泥灰土的脆断性与围压有很大的关系,当围压很小时,其脆断性表现相当明显。以上的结论可为水泥灰土工程设计计算提供参考,有其工程应用意义。
Through a series of three-axis unconsolidated undrained shear tests on different content of cement-lime soil samples, the effects of salt content, confining pressure, soaking time and proportion on the shear strength parameters of cement-lime soil were discussed. Structurally make a reasonable explanation. The results show that the strength parameters c and φ of cement-lime soil are affected by salt content and other factors, and the strength parameters c and φ can be quantitatively expressed by salt content. The brittleness of cement-lime soil has a great relationship with confining pressure. When the confining pressure is very small, its brittleness performance is quite obvious. The above conclusions may provide a reference for the design and calculation of cement gray soil engineering, and has its engineering significance.