水泥改良土填料试验研究初探

通过室内试验,对水泥改良土的物理性质、应力-应变关系、强度特性、压缩特性进行了研究。试验结果表明:最大干密度随水泥掺和比的增加变化不明显;水泥土的应力—应变曲线呈软化型,存在明显的应力峰值点,以脆性破坏为主;水泥土样的抗剪强度和压缩模量与掺和比呈正相关性,压缩系数随水泥掺和比的增加而减少;素土经改良后具有良好的水稳定性,强度损失明显减少,以6%水泥土的水稳定性最佳。

An Experimental Study of Modified Soil Fillings with Cement

Based on indoor tests,the physical properties,stress-strain relationship,intensity behaviors and compressibility of the modified soil with cement are studied in the paper.The results show that the maximum dry density does not increase obviously with the increasing of the blend ratio.The stress-strain relationship curve of the cement soil tends to soften,with an obvious peak point,it being mainly in a brittle failure state.The shear strength and compression modulus of the cement modified soil vary positively with cement content.The modified soil has a better water stability,with the loss of its strength obviously reduced,and when the blend ratio is 6%,its stability is the best in the tests.