福州大学学报（自然科学版）2018，Vol.46Issue(3)：391-395,5.DOI:10.7631/issn.1000-2243.17220
全再生骨料混凝土导热性能试验研究
Experimental study of thermal conductivity of recycled concrete
摘要
Abstract
The influence of replacement ratio of recycled fine aggregate and content of recycled fine aggregate powder on the thermal conductivity of recycled concrete were investigated and compared to normal concrete by using the Germany' s HFM436/3/1E thermal conductivity meter. The results show that recycled aggregate can significantly reduce the thermal conductivity of concrete. Compared to normal concrete, the thermal conductivity reduced 12. 2% when the replacement ratio of recycled coarse aggregate( RCA) is 100%. When keeping the replacement ratio of recycled coarse aggregate at 100%, the thermal conductivity reduced with the increase of replacement ratio of recycled fine aggre-gate( RFA) . The thermal conductivity reduced 23. 6% when the replacement ratio of coarse aggregate and fine aggregate were both at 100%. There is little influence on the thermal conductive performance of recycled concrete when the powder content of recycled fine aggregate within 7%. The influence of adding glazed hollow bead( GHB) in recycled concrete was also studied.关键词
再生骨料/粉体/玻化微珠/导热系数Key words
recycled aggregate/powder/glazed hollow bead/thermal conductivity分类
建筑与水利引用本文复制引用
游帆,郑建岚..全再生骨料混凝土导热性能试验研究[J].福州大学学报（自然科学版）,2018,46(3):391-395,5.基金项目
国家自然科学基金资助项目(51578153) （51578153）
国家自然科学基金联合基金重点支持项目(U1605242) （U1605242）
