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本文调研了西非红土粒料典型工程特性,分析了其独特的形成过程;开展室内试验,明确了西非红土粒料的物理力学特性,并利用三种结构承载力测试方法验证红土粒料作为道路结构层的适用性。结果表明:红土粒料级配不良,缺少中间粒径,液限及塑性指数偏大,但CBR值多能符合轻交通底基层要求;承载板回弹模量普遍偏高,与弯沉存在一定的幂函数关系,与动态回弹模量存在较好的线性关系,能满足底基层的应用要求。
This paper investigates the typical engineering characteristics of the laterite granule in West Africa, analyzes its unique formation process, conducts indoor tests, identifies the physical and mechanical properties of the laterite granule in West Africa, and uses three structural bearing capacity test methods to verify the red soil aggregate as a road structure Suitability of layers. The results show that the grading of the red soil is bad, the intermediate particle size is lacking, the liquid limit and plasticity index are larger, but the CBR value can meet the requirements of the light traffic subbase. The rebound modulus of the bearing plate is generally high, Power function relationship, and the dynamic modulus of elasticity has a good linear relationship, to meet the application requirements of the sub-grass-roots level.