大粒径无黏性土石混合料路用性能研究

Study on road performance of noncohesive soil and stone mixture with large particle size

依托实际工程,进行大粒径无黏性土石混合料的室内试验研究,测定土样的级配、岩样矿物成分等物理化学性质指标,通过标准重型击实试验确定土样的最佳含水率和最大干密度;测定试件的加州承载比,验证其路用性能;采用GEO-SLOPE软件对大粒径无黏性土石混合料典型路堤进行稳定性分析;参考室内试验指标,按照推荐的最佳含水率,进行现场试验路铺筑,验证其路用效果。

Based on the actual project,the laboratory test of non-cohesive soil and stone mixture with large particle size was carried out,and the physical and chemical properties of soil samples were measured,such as gradation,mineral composition of rock samples.The optimal moisture content and maximum dry density of soil samples were determined by standard heavy compaction test.The California load ratio of the specimens was measured to verify their road performance.GEOSLOPE software was used to analyze the stability of typical embankment.According to the recommended optimal moisture content,the site test road was paved with reference to the indoor test index to verify its pavement performance.