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本文总结了粘性土的压实特性,从不同击实功能下土料的压实最优饱和度S_(rop)为常数、标准击实功能的最优含水量ω_(op)约等于塑限ω_p这些基本概念出发,提出了用塑限、最优饱和度来估算粘性土的最大干容重γdmax。即S_(rop)=C,W_(op)=ω_p且当W_p≤17％,S_(rop)=(3ω_p+35)％ω_p>17％,S_(rop)=(0.3ω_p+80)％γdmax=(Gs·S_(rop))/(Gs·ω_p+S_(rop))在文中讨论了确定粘性土压实标准的方法,并对施工条件系数m进行了论证,提出了建议数值。即对于中低坝:m=0.95～0.97对于高坝:m=0.97～0.99
This paper summarizes the compaction properties of cohesive soils. From the different compaction functions, the optimum soil compaction saturation S_(rop) is a constant, and the standard compaction function’s optimal water content ω_(op) is approximately equal to the plastic limit ω_p. Based on these basic concepts, the maximum dry bulk weight γdmax of clay soil is estimated by using plastic limit and optimal saturation. That is, S_(rop)=C, W_(op)=ω_p and when W_p≤17%, S_(rop)=(3ω_p+35)%ω_p>17%, S_(rop)=(0.3ω_p+80)%γdmax (Gs·S_(rop))/(Gs·ω_p+S_(rop)) discusses the method for determining the compaction standard of cohesive soils, and demonstrates the construction condition coefficient m, and proposes the recommended values. That is, for medium-low dams: m=0.95-0.97 for high dams: m=0.97-0.99