基于正交试验法的透水混凝土性能影响研究

（南京工业大学 土木工程学院，江苏 南京  211800）
 

    摘要：采用正交试验法分析了设计孔隙率、水胶比、骨料粒径、纳米二氧化硅掺量以及粉煤灰掺量5个因素对透水混凝土抗压强度、实测孔隙率和透水系数的影响。结果表明，设计孔隙率、骨料粒径和水胶比对透水混凝土的抗压强度影响最大，纳米二氧化硅和粉煤灰在不影响透水系数的前提下能够提高抗压强度；设计孔隙率与实测孔隙率基本一致；抗压强度、实测孔隙率和透水系数具有较好的相关性。

    关键词：透水混凝土；正交试验法；抗压强度；透水性能

    中图分类号：TU528.2        文献标识码：A        文章编号：1001-702X（2018）09-00

 

Study on performance of pervious concrete based on orthogonal test

WU Guangyi，XU Feng，WANG Shuguang，LI Weiwei

（College of Civil Engineering，Nanjing Tech University，Nanjing 211800，China）

    Abstract：In this paper，the influence of porosity，water cement ratio，aggregate size，nano silica ash and fly ash contents on the pervious concrete compressive strength，porosity and permeability coefficient measured was studied by orthogonal test. Results show that the porosity of porous concrete，aggregate size and water cement ratio have the maximum influence to the compressive strength of concrete，nano silica and fly ash can improve the compressive strength in the premise of not affecting the permeability coefficient；designed porosity and the measured porosity is basically the same；the compressive strength，the measured porosity and permeability coefficient has good correlation.

    Key words：pervious concrete，orthogonal test method，compressive strength，pervious performance