摘要
通过快速碳化试验,以再生骨料掺量、废弃纤维掺量、水灰比等为影响因素,对再生混凝土的碳化性能进行研究。试验结果表明：再生混凝土的碳化深度随水灰比、再生骨料掺量的增大而减小,随废弃纤维掺量的增大而降低,废弃纤维的尺度对碳化性能影响可以忽略。在已有的普通混凝土碳化模型研究基础上,结合本试验碳化数据,建立了废弃纤维再生混凝土碳化深度预测模型,模型预测结果与试验值吻合良好。
An accelerated carbonation experimental analysis on carbonation resistance behavior of recycled concrete was carried out. The influence of recycled coarse aggregate replacement ratio,waste fiber ratio,water-cement ratio and the kinds of mineral admixture on the carbonation resistance of recycled concrete was studied. The results showed that the carbonation depth decreased with the increase of water-cement ratio and recycled coarse aggregate replacement ratio,while it decreased with the growth of waste fiber ratio. The effect of waste fiber length on the carbonation resistance behavior of recycled concrete performance could be ignored. Based on the current prediction models of normal concrete carbonation depth,the prediction model of recycled concrete carbonation depth was established through the regression analysis of experimental data obtained from the research,and the results of the model agreed well with the experimental results.
作者
王建超
周静海
王新栋
梅长周
WANG Jianchao;ZHOU Jinghai;WANG Xindong;MEI Changzhou(School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China)
出处
《工业建筑》
CSCD
北大核心
2018年第3期17-20,5,共5页
Industrial Construction
基金
国家自然科学基金项目(51678374)
辽宁省教育厅基金(LJZ2017028)
关键词
废弃纤维再生混凝土
碳化深度
预测模型
waste fiber recycled concrete
carbonation depth
prediction model
