水泥稳定建筑垃圾混渣料的路用性能研究

Study on Highway Performances of Cement Stabilized Construction Waste Mixture

为了探讨建筑垃圾混渣作为道路建筑材料的技术性能,促进建筑垃圾在公路工程中资源化应用,试验研究了水泥稳定建筑垃圾混渣的最大干密度、抗压强度、刚度和抗冻性能等路用性能指标,得出了水泥稳定建筑垃圾混渣各项指标的主要影响因素与作用规律。试验结果表明:水泥稳定建筑垃圾混渣的最大干密度和抗压强度随着废混凝土破碎料含量的增大而先升后降,随着水泥掺量的增大而提高;试验配比的水泥稳定建筑垃圾混渣的7 d龄期抗压强度均大于2.0 MPa,各项路用性能技术指标均满足规范的相关要求,可用于公路工程建设。有利于提高建筑垃圾的资源化利用率、并节约公路建筑材料。

In order to investigate the technical performance of construction waste mixture as highway construction materials,and to fully utilize construction waste as a resource in highway engineering,the highway performances of cement stabilized construction waste mixture were experimentally studied,which include the maximum dry density,compressive strength,stiffness and frost resistance.And the main influencing factors and action laws of various indicators of cement stabilized construction waste mixture were obtained.The test results indicate that the maximum dry density and compressive strength of cement stabilized construction waste mixture have the trend of increasing and then falling with the increase of waste concrete crushed material content,and increase with the increase of cement content.The 7 d-age compressive strength of the cement stabilized construction waste mixture of the test proportions is greater than 2.0 MPa.Various highway performances of cement stabilized construction waste mixture with appropriate proportions meet the relevant requirements of the specification and can be used in highway engineering construction.These achievements are conducive to improving the construction waste utilization rate of and saving highway construction materials.