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用滤纸法和压力板法对Kunigel-V1和高庙子两种膨润土进行试验研究,量测不同孔隙比情况下的土-水特征曲线,研究土-水特征曲线与孔隙比之间的关系以及两种膨润土的土-水特性。试验结果表明:用吸力与含水率的关系表示土-水特征曲线时,在吸力较大的情况下,孔隙比对土-水特征曲线的影响不大;用吸力与饱和度的关系表示土-水特征曲线时,土-水特征曲线随着孔隙比的减小向右上方移动,即在吸力一定的情况下,饱和度随着孔隙比的减小而增加,并且此变化接近于线性变化。另外,孔隙比相同时,Kunigel-V1和高庙子膨润土的土-水特征曲线比较接近,即两种膨润土的持水特性比较相近。
The two bentonites Kunigel-V1 and Gaomiaozi were tested by filter paper method and pressure plate method. The soil-water characteristic curve under different void ratio was measured. The relationship between soil-water characteristic curve and void ratio was studied. Soil-water characteristics of two bentonites. The results show that when the relationship between suction and water content is used to represent the soil-water characteristic curve, the influence of pore ratio on the soil-water characteristic curve is not significant under the condition of large suction. The relation between the suction and the saturation indicates that the soil- Water characteristic curve, the soil-water characteristic curve moves to the upper right as the porosity ratio decreases. That is, with a certain suction, the saturation increases with the decrease of the porosity ratio, and the change is close to the linear change. In addition, the soil-water characteristic curve of Kunigel-V1 and Gaomiaozi Bentonite are close to each other when the void ratio is the same, that is, the water holding characteristics of the two bentonites are similar.