摘要
透水混凝土是一种新型路面材料,具有良好的透水性,广泛应用于广场、人行道、公园路面等场所,透水混凝土特殊结构导致强度存在不足,提高透水混凝土的强度是当前研究方向。采用在透水混凝土中添加增强剂的方法提高强度,在添加硅灰和玄武岩纤维的基础上继续添加一定量的乳胶、硅灰和玄武岩纤维,进行对比试验,比较7 d抗压强度、28 d抗压强度、劈裂抗拉强度、有效孔隙率、透水系数和密度6个参数。试验结果表明高强度透水混凝土的配合比为:粗集料1 600 kg/m^3,细集料100 kg/m^3,水141 kg/m^3,乳胶10 kg/m^3,硅灰15 kg/m^3,玄武岩纤维5 kg/m^3,减水剂4 kg/m^3。
Pervious concrete is a new type of pavement material with good water permeability.It is widely used in squares,sidewalks,park pavements,etc.The special structure of permeable concrete leads to insufficient strength.Improving the strength of permeable concrete is a current research direction.The strength is increased by adding a reinforcing agent to the permeable concrete.A certain amount of latex,silica fume and basalt fiber are continuously added on the basis of the addition of silica fume and basalt fiber,and comparative tests are carried out to compare 6 parameters:the compressive strength of 7 d,the compressive strength of 28 d,splitting tensile strength,effective porosity,water permeability coefficient and density.The test results show that the mixing ratio of high-strength permeable concrete is:coarse aggregate 1 600 kg/m^3,fine aggregate 100 kg/m^3,water 141 kg/m^3,latex 10 kg/m^3,silica fume 15 kg/m^3,basalt fiber 5 kg/m^3,water reducing agent 4kg/m^3.
作者
陈永锋
袁松年
任隽丰
董侨
顾兴宇
耿德华
陆志红
沈亚芳
CHEN Yong-feng;YUAN Song-nian;REN Juan-feng;DONG Qiao;GU Xing-yu;GENG De-hua;LU Zhi-hong;SHEN Ya-fang(Jiangsu Xianda Construction Group Co.,Ltd.,Changzhou 213016,China;Changzhou Municipal Engineering Management Center,Changzhou 213016,China;Southeast University,Nanjing 210096,China)
出处
《中国市政工程》
2019年第1期21-23,103,共4页
China Municipal Engineering
基金
常州市科技处项目(8521002622)
关键词
透水混凝土
强度
配合比
permeable concrete
strength
mix ratio
