文章通过对贵州红粘土含水性指标的试验和统计,发现贵州红粘土的天然含水率和饱和度有自身的特点:一是高含水率指标与稠度状态指标的关系较特殊;二是普遍存在饱和度大于理论最大值的现象。结合红粘土特殊成分结构分析,认为其原因是红粘土中存在大量结合水。然后提出用“等效含水率”和“等效饱和度”指标来修正其含水性指标,可以消除结合水产生的影响,便于与其它土类的含水性指标进行对比。 Through the experiment and statistics on the water-bearing index of red clay in Guizhou, the article found that the natural water content and saturation of Guizhou red clay have their own characteristics: First, the relationship between high water content index and consistency status index is special; second, Degree greater than the maximum theoretical phenomenon. Combined with the structural analysis of the special components of red clay, the reason is that there is a large amount of bound water in red clay. Then we propose to modify the water content index by using the equivalent water content ratio and the equivalent saturation index to eliminate the influence of bound water and make comparison with the water content index of other soil types.