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高速公路基层主要是公路主要的承重层,用于抵抗和减缓荷载,因此,基层强度将对公路强度和路面损害产生直接影响。本文就高速公路水泥稳定碎石基层强度形成原理、级配组成及基层含水量与回弹模量间的关系进行了阐述和分析,并提出了基层含水量的控制应在最优含水量以下15%的范围内,才能保证基层强度和稳定性。
The grassroots of the expressway are mainly the main load-bearing layers of the highway, which are used to resist and mitigate the load. Therefore, the strength of the grass-roots level will have a direct impact on the strength of the road and damage to the road surface. In this paper, the formation principle, gradation composition and the relation between the water content and the elastic modulus of the expressway cement stabilized macadam are explained and analyzed. It is also suggested that the control of the water content of the cementitious macadam should be below the optimal water content % Of the range, in order to ensure the strength and stability of the grassroots.