黄土制备人工结构性土方法的可行性研究

Feasibility Study on Preparation of Artificial Structural Soil by Loess

针对当前人工结构性土制样方法单一、同类材料差异性较大等问题,初次探讨采用原状Q_3黄土作为制备人工结构性土的主要原料,并对该方案的可行性展开验证。试验结果表明:以原状Q_3黄土来作为制备人工结构性土的主要原料是可行的。在最高5%水泥质量配比及48h的水泥水化时间以内,该方法制得的人工结构性土能合理反映天然结构性土的应变软化规律;同时,以黄土制备人工结构性土为基础,提出了结构性系数的概念,对结构性土的应变软化规律进行了量化分析。

In view of the problems in the preparation of artificial structural soil samples like preparation method lacking and distinguished differences in similar materials,the method of using the original Q3 loess as the main raw material for the preparation of artificial structural soil is preliminarily discussed,with its feasibility verified.The experimental results show that the original Q3 loess works when used as the main raw material for the preparation of artificial structural soil.With the highest cement mass ratio of 5%and within the cement hydration time of 48h,the artificial structural soil prepared by this method can reasonably reflect the strain softening law of natural structural soil;meanwhile,based on the artificial structural soil prepared with loess,the concept of structural coefficient is proposed,and the strain softening law of structural soil is quantitatively analyzed.