摘要
针对重庆地区透水水泥混凝土配比设计与技术性能进行研究,结果发现:1)水胶比为0. 28~0. 32且空隙率在16%~24%时,混凝土具有良好的透水性能、抗压性能及抗弯拉性能,能满足重庆地区城市道路施工及海绵城市建设的相关要求;2)设计的透水混凝土有效孔隙率与总孔隙率呈正相关,抗压强度和抗弯拉强度则与孔隙率呈负相关,透水系数与孔隙率也呈负相关。
Mix proportion design and technical performance of pervious cement concrete for Chongqing area are studied in this paper. The results show that: 1) when the water cement ratio is 0. 28-0. 32 and the void ratio is 16%-24%,the concrete has good water permeability,compression resistance and bending tensile resistance,which can meet the requirements of urban road construction and sponge city construction in Chongqing;2) There is a positive correlation between the total porosity and the effective void ratio of the designed permeable concrete,a negative correlation between the compressive strength and flexural strength,and a negative correlation between the permeability coefficient and porosity.
作者
杨幼江
薛维龙
蒋玉龙
宋文学
吴进良
YANG Youjiang;XUE Weilong;JIANG Yulong;SONG Wenxue;WU Jinliang(CCCC Second Highway Survey and Design Institute Co.,Ltd.,Wuhan 430056;Baotou Highway Engineering Co.,Ltd.,Baotou,Inner Mongolia 014060;College of Civil Engineering of Chongqing Jiaotong University,Chongqing 400074)
出处
《公路交通技术》
2020年第2期27-33,共7页
Technology of Highway and Transport
关键词
透水水泥混凝土
配合比设计
技术性能
pervious cement concrete
mix proportion design
technical performance
