填料颗粒组成与压密关系的探讨

针对长江干堤增高培厚工程中填土压密问题，在大量的室内外试验与测试的基础上，对填料的颗粒组成与压密性能之间的关系进行了分析，修正了最优含水量的估算公式。当填料中粉砂粒含量较高时，峰值干密度附近含水量的容许变化范围较小，最优含水量较低，易被压密；而当粘粒含量较高时，则相反，且必须在较大压实能量的间歇作用下，方可取得较大的干密度。

ON THE RELATION BETWEEN COMPOSITION OF SOIL AND CONSOLIDATION

To counter the problem of fill consolidation at the project of highing and thickening the dams of Yangtze River, this paper analysed the realtionship between composition of soil and properties of consolidation and also corrected the estimation formula of optimum water content on the basis of lots of outdoor tests and experiments. The result states that when the silt and fine sang grain contents more, the allowable extent of water content near the peak dry density gets smaller and the optimum water content lower, it can get hearier dry density at a certain effect of compacting energy. But when the clay grain content more, the results just are the opposite and it must be under much more effect of compacting energy and then can get heavier dry density.