普通原材料制备C30透水混凝土

Preparation of C30 Pervious Concrete using Common Raw Materials

浏览量:

关键词:

透水混凝土;抗压强度;有效孔隙率;透水系数

Key words:

Pervious concrete; Compressive strength; Effective porosity; Permeability coefficient

刊期:

2017年第12期

DOI:

文章编号:

1000-4637(2017)12-19-04

基金项目:

湖北省自然科学基金资助项目(2017CFB582);湖北省教育科学规划课题资助项目(2016GB095); 湖北省高等学校优秀中青年科技创新团队计划资助项目(T201626)

作者:

蒋佑松1,李 汇1, 卢 健1,陈 跃2,姜玉凤2

单位:

1.中国十五冶金建设集团有限公司,武汉 430075; 2.湖北理工学院材料科学与工程学院,黄石 435003

摘要

摘   要:利用非连续粒级骨料、水泥、矿物掺合料等普通原材料,掺入高性能减水剂制备了C30透水混凝土,并研究了骨料特性、水胶比、成型方式等因素对透水混凝土抗压强度、透水系数等性能的影响。结果表明:选用粒径为4.75~9.5mm粗骨料、P·O 42.5级水泥,控制水灰比0.30左右,掺入聚羧酸高效减水剂,可制得表观密度为1900kg/m3、透水系数大于1.5mm/s的C30透水混凝土。

Abstract:Pervious concrete was prepared by common raw materials of noncontinuous grade aggregate, cement, mineral admixture, and high performance water reducing agent. The influence of porosity, aggregate characteristics, mineral admixture content, and molding process on the compressive strength and permeability coefficient of pervious concrete is studied. The results show that when C30 pervious concrete with apparent density of 1900kg/m3 and the permeability coefficient of above 1.5mm/s is prepared by using P·O 42.5 cement, coarse aggregate with diameter 4.75~9.5mm, water-cement ratio of about 0.30 and adding a polycarboxylate superplasticizer. 

结论

(1)骨料尺寸、水胶比、混合料制备方法及试块成型方式等因素会影响透水混凝土组织结构的密实度、均匀性以及骨料界面间的黏结强度,从而对透水混凝土的抗压强度、透水性会产生明显的影响。
(2)对特定的骨料与水泥,透水混凝土的水胶比存在一个最佳值,水胶比过小,工作度较差,不易密实成型,水胶比过大,容易产生流浆,均不利于混凝土的透水性与强度的提高。
(3)采用粒径为4.75~9.5mm粗骨料、0.30左右的水灰比,通过静压成型工艺,能够配制表观密度为1900kg/m3、透水系数大于1.5mm/s的 C30透水混凝土。

参考文献

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引用本文

蒋佑松,李汇,卢健,等.普通原材料制备C30透水混凝土[J].混凝土与水泥制品,2017(12):19-22.

JIANG Y S, LI H, LU J,et al.Preparation of C30 Pervious Concrete using Common Raw Materials[J].China Concrete and Cement Products,2017(12):19-22.


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