水泥深层搅拌桩(湿法)室内试验研究

Study on Laboratory Test of Deep Mixing Cement Pile(Wet Method)

通过水泥土的室内配合比试验,对影响水泥深层搅拌桩(湿法)的水泥土立方体抗压强度的因素进行了分析研究,发现水泥土立方体抗压强度与水泥掺量呈线性关系;水泥土立方体抗压强度与龄期呈对数关系;水泥土立方体抗压强度与水泥强度等级、水灰比之间也存在一定的相关性。对硫酸盐含量比较高的土质的水泥土立方体抗压强度进行了研究,发现硫酸盐含量比较高的土质采用抗硫酸盐水泥作为固化剂能大大提高水泥深层搅拌桩的抗侵蚀性。

Through the indoor mix proportion test of cement soil,the factors affecting the compressive strength of cement soil cube of cement deep mixing pile(wet method)are analyzed and studied.It is found that the relationship between the compressive strength of cement soil cube and the amount of cement is linear,the relationship between the compressive strength of cement soil cube and age is logarithmic,and the compressive strength of soil-cement cube is also correlated with cement strength grade and water cement ratio.The compressive strength of soil-cement cube with high sulfate content is studied.It is found that the use of sulfate resistant cement as curing agent in soil with high sulfate content can greatly improve the corrosion resistance of cement deep mixing pile.