基于PAM-有机硅改性水泥土抗渗性能试验研究

研究PAM-有机硅复合材料对水泥土抗渗性能的影响可以为水泥土在工程建设中的应用提供一定的参考。通过对加入不同掺量的PAM-有机硅水泥土试样进行渗透试验,得出PAM-有机硅对水泥土渗透系数的影响规律,并对水泥土渗透系数与外加剂掺量进行回归分析。在此基础上,采用扫描电镜分析水泥土的微观结构变化,探讨PAM-有机硅对水泥土抗渗性能的影响机理。结果表明,水泥土渗透系数随着PAM或有机硅掺量的增加呈现出先减后增的变化趋势,且水泥土抗渗性能的提高对PAM-有机硅存在两种最优掺量。

Experimental Study the Influence of PAM-silicone on Cemented SoilAnti-permeability Performance

_{This experimental study the influence of PAM-silicone on cement-soil anti-permeability performance can provide certain references to cement-soil engineering applications in similar projects. By doing penetration test to cement-soil in different PAM-silicone content, we can see the influence rule of PAM-silicone on cement-soil permeability coefficient, and make a regression analysis of cement-soil permeability coefficient and admixture content. On this basis, using scanning electron microscopy (SEM) to analyze the microscopic structural changes of cemented soil, investigate the influence mechanism of PAM-silicone on cemented soil anti-permeability performance. The results show that the permeability coefficient change tendency of cemented soil is first decreased and then rose with the increase of PAM or silicone content, and there are two suitable content to PAM-silicone on the increase of cemented soil anti-permeability performance.}