透水混凝土配合比参数选择及设计方法研究pdf.doc

2011 年 第 8 期（ 总 第 262 期 ） 混 凝 土 预 拌 混 凝 土 Number 8 in 2011（Total No.262） READY MIXED CONCRETE Concrete doi：10.3969/j.issn.1002-3550.2011.08.036 透水混凝土配合比参数选择及设计方法研究 徐仁崇 1，桂苗苗 1，刘君秀 2，陈清己 1，龚明子 1 （1. 厦门市建筑科学研究院集团股份有限公司，福建 厦门 361004；2. 厦门天润锦龙建材有限公司，福建 厦门 361009） 摘 要： 在透水混凝土的配合比设计中引入骨料级配与粒径、体积砂率两个参数，并研究设计孔隙率、骨料级配与粒径、体积砂率对透水 混凝土性能的影响。结果表明：设计孔隙率与透水系数存在指数函数关系；骨料级配与粒径对混凝土的强度及透水性能影响较大；适量体 积砂子的掺入能提高混凝土的强度而不降低其透水性能，且体积砂率的大小取决于水泥用量及骨料级配与粒径；以设计孔隙率、水胶比、 骨料粒径与级配、体积砂率为参数的透水混凝土配合比设计方法能够有效的指导透水混凝土的配合比设计。 关键词： 透水混凝土；配合比；骨料级配与粒径；体积砂率 中图分类号： TU528.062 文献标志码： A 文章编号： 1002-3550（2011）08-0109-04 St udy on paramet ers select ion and design met hod of pervious concret e mix proport ion XU Ren-chong 1，GUI Miao-miao 1，LIU Jun-xiu 2，CHEN Qing-ji 1，GONG Ming-zi 1 （1. Xiamen Academy of Building Research Group Co.，Ltd.，Xiamen 361004，China； 2. Xiamen Tianrun Jinlong Building Material Co.，Ltd.，Xiamen 361009，China） Abst ract : Gradation and particle size of aggregate and sand volume ratio were introduced into the mix proportion of pervious concrete and the influence of design porosity，gradation and particle size of aggregate，sand volume ratio on performance of pervious concrete were studied.The re-sults indicate that the exponential relation is presented between the design porosity and permeation coefficient.Gradation and particle size of ag-gregate has a great effect on strength and permeation coefficient.The strength can be increased and the permeation coefficient was not reduced when sand was added into the pervious concrete and the sand volume ratio is related to the content of cement and the gradation and particle size of aggregate.The design method of mix proportion that includes the parameters of design porosity，water-binder ratios，gradation and particle size of aggregate，sand volume ratio is very useful. Key w ords: pervious concrete；mix proportion；gradation and particle size of aggregate；sand volume ratio  0 引言 透水混凝土属于一种环保型绿色建筑材料，用其铺