基于正交试验的沸石生态混凝土配合比优化  

Mix Proportion Optimization of Zeolite Ecological Concrete Based on Orthogonal Test

作　　者：闫妍 刘之葵[1] 韦海霞 杨华健 夏炜燕 YAN Yan;LIU Zhikui;WEI Haixia;YANG Huajian;XIA Weiyan(College of Civil Engineering and Architecture,Guilin University of Technology,Guilin 541004,China)

机构地区：[1]桂林理工大学土木与建筑工程学院,广西桂林541004

出　　处：《洛阳理工学院学报（自然科学版）》2024年第2期18-25,共8页Journal of Luoyang Institute of Science and Technology：Natural Science Edition

基　　金：国家自然科学基金项目(41867039);广西岩土力学与工程重点试验室项目(桂科能20-Y-XT-03);南方石山地区矿山地质环境修复工程技术创新中心项目(CXZX12020002)。

摘　　要：为探究沸石生态混凝土的最佳配比,基于正交试验设计了9组不同配合比的沸石生态混凝土,研究了目标孔隙率、水灰比和粉煤灰掺量3个因素及其3个不同水平对沸石生态混凝土抗压强度、实际孔隙率、透水系数和pH值的影响。结果表明:抗压强度最佳配合比组合方案为目标孔隙率20%、水灰比0.35、粉煤灰掺量20%;实际孔隙率、透水系数和pH值最佳配合比组合方案为目标孔隙率30%、水灰比0.35、粉煤灰掺量20%。为保证沸石生态混凝土的强度,选择力学性能较好的组合为目标孔隙率20%、水灰比0.35、粉煤灰掺量20%,可用于垃圾填埋场底层、垃圾箱、河岸混凝土护坡面、公园景区路面等工程。In order to explore the best ratio of zeolite ecological concrete,this paper designed 9 groups of zeolite ecological concrete with different mix ratios based on orthogonal test.The effects of target porosity,water-cement ratio and fly ash content and their three different levels on the compressive strength,actual porosity,permeability coefficient and pH value of zeolite ecological concrete were studied.The results show that the best mix ratio combination scheme of compressive strength is:target porosity 20%,water-cement ratio 0.35,fly ash content 20%;the best combination scheme of actual porosity,permeability coefficient and pH value is:target porosity 30%,water-cement ratio 0.35,fly ash content 20%.To ensure the strength of zeolite ecological concrete,the combination with better mechanical properties should be selected,which is the target porosity of 20%,water-cement ratio of 0.35,and fly ash content of 20%.It can be used in the projects,like the bottom of landfill sites,garbage bins,river bank concrete slope protection surfaces,park pavement.

关 键 词：生态混凝土 天然沸石 正交试验 力学性能 配合比优化 

分 类 号：TU528.2[建筑科学—建筑技术科学]