水泥搅拌桩力口固有相质土效果及改良措旋实验研究

地基土有机质的存在影响水泥的水化反应，不利于水泥加固土强度增长。通过室内试验，研究水泥掺量、外加剂、龄期对有机质土中水泥土搅拌桩无侧限抗压强度的影响规律。研究结果表明，提高水泥掺入量、添加减水剂和石膏粉可以提高水泥土搅拌桩无侧限抗压强度；水泥土试件无侧限抗压强度随龄期增长而增大，14d龄期与28d龄期无侧限抗压强度之比约为0．85。

Experimental Study on Cement Mixing Pile Strengthening Effect of Organic Soil and Improvement Measures

Soil organic matter can affect the hydration of cement and go against the strength increasing of cement-soil. The influence of cement content, admixture, cement age on unconfined uniaxial compressive strength of cement-soil are discussed by laboratory tests. It is indicated that unconfined uniaxial compressive strength of cement-soil increases by adding cement amount or water reducing agent. And the compressive strength are incressed with the growth of cement age. Unconfined uniaxial compressive strength ratio with the cement age of 14d and 28d is 0.85.