摘要
土的击实试验是测定土的密度与含水率关系,确定最大干密度与最优含水率,提供压实性资料的一种常用的试验方法。文献多以塑限为基础预估最优含水率,但具体的观点不一。为探究土塑限与轻型击实试验最优含水率之间的关系,选取天津周边海河流域的非特殊性土、云南广西交界红水河流域的红黏土开展相关试验,分析试验数据总结规律。提出不同区域、不同成因的土样宜采用不同预估依据的观点,便于工程实际开展试验能够准确地预估土样最优含水率,缩短试验周期、提高生产效率。
Soil compaction tests are commonly used to establish the relationship between soil density and moisture content,determine the maximum dry density and optimum moisture content,and provide essential data for compaction.While many studies have employed the soil plastic limit to estimate optimum moisture content,their specific approaches vary.To explore the relationship between the plastic limit and the optimum moisture content determined through light compaction tests,this study conducted experiments on non-special soils from the Haihe River Basin near Tianjin and red clay from the Hongshui River Basin along the Yunnan-Guangxi border.By analyzing the test data,the study identified patterns indicating that different regions and soil origins may require distinct estimation criteria.This approach provides practical guidance for accurately predicting the optimum moisture content in engineering applications,thereby shortening testing times and improving efficiency.
作者
罗绪远
牛坤
LUO Xuyuan;NIU Kun(China Water Resources Beifang Investigation,Design and Research Co.Ltd.,Tianjin 300222,China)
出处
《水利水电工程设计》
2025年第3期72-76,共5页
Design of Water Resources & Hydroelectric Engineering
关键词
最优含水率
塑限
海河流域
红水河流域
红黏土
击实试验
optimum moisture content
plastic limit,Haihe River Basin
Hongshui River Basin
red clay
compaction test
