多孔混凝土排水基层路用性能研究  

Physical and mechanical performance of porous concrete for drainage base

作　　者：郑木莲[1] 陈拴发[1] 王秉纲[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064

出　　处：《西安科技大学学报》2007年第4期603-607,共5页Journal of Xi’an University of Science and Technology

基　　金：交通部西部交通建设科技项目(200631800005);国家"十一五"科技支撑计划重大项目(2006BAF02A00)

摘　　要：多孔混凝土作为路面的基层,应具有良好的物理性质和力学性质。文中通过室内试验与理论分析,给出多孔混凝土有效空隙率与全空隙率、渗透系数与空隙率的关系。得出多孔混凝土强度随龄期的发展规律,弯拉强度、劈裂强度与抗压强度的相关关系,抗压强度与空隙率的关系以及2种形式下的双对数疲劳方程;多孔混凝土弯拉弹性模量与弯拉强度,以及抗压弹性模量与轴心抗压强度的关系;多孔混凝土的温缩系数和干缩系数。As base course material, porous concrete should have good physical and mechanical performance. According to tests and analysis, the relationships between effective porosity and total porosity, permeability coefficient and porosity of porous concrete are adduced. The strength development with time, relationships between flexural tensile strength, split strength and compression strength, the relationship between compression strength and porosity, and two types of double logarithm fatigue equation of porous concrete are got. The relationships between flexural tensile elastic module and flexural tensile strength , compression elastic module and compression strength of porous concrete are drawn. At last, the temperature contraction coefficient and dry shrinkage coefficient of porous concrete are advanced.

关 键 词：多孔混凝土 渗透系数 疲劳方程 温缩系数 干缩系数 

分 类 号：U416.223[交通运输工程—道路与铁道工程]