To investigate the water retention characteristics of weak expansive soil, the full suction range was determined for soil samples with different initial void ratios prepared according to the slurry consolidation method. Differences in water retention characteristics between samples prepared using slurry consolidation methods and those prepared using compaction in a previous study were investigated. The results indicate that the sample prepared by slurry consolidation exhibited a lower air-entry value, faster dehydration rate, and lower residual water content. Here, an equation describing volume change under suction and a soil-water characteristic curve equation characterized by saturation with volume change have been established based on the laws governing changes in suction and the Fredlund-Xing model.

为研究软弱膨胀土的保水特性，对根据泥浆固结法制备的不同初始孔隙比的土样进行全吸水范围测定。研究了使用泥浆固结方法制备的样品与先前研究中使用压实方法制备的样品之间保水特性的差异。结果表明，浆液固结制备的样品具有较低的空气进入值、较快的脱水速度和较低的残余水含量。在这里，基于吸力变化规律和Fredlund-Xing模型，建立了描述吸力下体积变化的方程和以饱和度随体积变化为特征的土水特征曲线方程。