摘要
通过试验分别研究了再生粗骨料和粉煤灰掺量对再生混凝土的工作性能及抗压强度的影响。结果表明:随着再生骨料掺量从0%增加到100%,再生混凝土的坍落度和抗压强度均逐渐降低,但再生骨料掺量为30%时,再生混凝土强度大于空白试件。当再生粗骨料100%替代天然骨料时,随着粉煤灰掺量的增加再生混凝土的坍落度逐渐提高而抗压强度降低,且粉煤灰掺量为20%时,再生混凝土抗压强度降低率较小。
The influence of recycled course aggregate and fly ash on the workability and compressive strength of recycled concrete was experimentally studied.The results show that the slump and compressive strength of recycled concrete decrease gradually with the increasing replacement of recycled aggregate from0%to100%.The compressive strength of recycled concrete with30%recycled aggregate,however,is much higher than others including the control group.With the increasing of fly ash,the slump of recycled concrete with100%recycled coarse aggregate increases while its compressive strength decreases,and the strength loss of the group with20%fly ash is the least.
作者
彭建庭
汤文秀
张云莲
Peng Jianting;Tang Wenxiu;Zhang Yunlian(School of Civil Engineering and Architecture,Zhejiang University of Science and Technology,Hangzhou 310023,China;Hangzhou Construction Vocational School,Hangzhou 310021,China;Chinese-German Institute of Engineering,Zhejiang University of Science and Technology,Hangzhou 310023,China)
出处
《科技通报》
北大核心
2017年第3期159-162,共4页
Bulletin of Science and Technology
基金
浙江科技学院交叉预研专项项目(2013JC08Y)
关键词
再生混凝土
再生粗骨料
粉煤灰
抗压强度
坍落度
recycled concrete
recycled coarse aggregate
fly ash
compressive strength
slump
