基于正交试验的再生混凝土配合比优化研究  

The Optimization Study on Mix Proportion of Recycled Concrete Based on Orthogonal Test

作　　者：刘娟[1] LIU Juan(The College of Architectural Engineering, Jiangsu City Vocational College, Nanjing 210019, China)

机构地区：[1]江苏城市职业学院建工学院,南京210019

出　　处：《长春工程学院学报（自然科学版）》2016年第1期22-24,共3页Journal of Changchun Institute of Technology：Natural Sciences Edition

基　　金：江苏省高校自然科学研究面上项目(14KJB560004)

摘　　要：采用正交试验设计再生混凝土的配合比,当水胶比(W/B)0.45,再生骨料(RA)取代量30%,聚羧酸盐高效减水剂(PC)掺量2.5%,粉煤灰(FA)掺量20%时,组成再生混凝土的最优配合比。选用最优配合比,改变再生骨料的原始混凝土强度,表现出原始混凝土强度高,配制的再生混凝土强度也高的结果。当原始混凝土强度达到C50,基本上可以配制出与天然骨料一样的混凝土强度。The mix proportion of recycled concrete is designed by orthogonal test.When the water cement ratio is0.45,recycled aggregate replacement amount is30%,the content of Poly carboxylic acid superplasticizer is2.5%,and fly ash content is20%,they form the optimal mix proportion of recycled concrete.If the optimal mixture ratio is chosen,and the original concrete strength of recycled aggregate is changed,it shows that the recycled concrete strength is also high when the original concrete strength is high.If the original concrete strength reached C50,it can be almost used to prepare with the natural aggregate concrete strength.

关 键 词：再生混凝土 配合比 优化 正交试验 

分 类 号：TU528.59[建筑科学—建筑技术科学]