文章摘要
引用本文:
全再生骨料混凝土导热性能试验研究
Experimental Study of Thermal Conductivity of Recycled Concrete
投稿时间:2017-05-31  修订日期:2017-07-22
DOI:
中文关键词: 再生粗骨料  再生细骨料  粉体  玻化微珠  导热系数
英文关键词: recycled aggregate concrete  recycled fine aggregate  powder  glazed hollow bead  
基金项目:国家自然科学基金面上项目(51578153),国家自然科学基金联合基金重点支持项目(U1605242)
作者单位E-mail
游帆 福州大学土木工程学院福建江夏学院工程学院福建省环保节能型高性能混凝土协同创新中心 479188048@qq.com 
郑建岚 福州大学土木工程学院福建江夏学院工程学院福建省环保节能型高性能混凝土协同创新中心 jianlan@fzu.edu.cn 
摘要点击次数: 47
全文下载次数: 
中文摘要:
      采用德国HFM436/3/1E导热仪测试再生混凝土导热系数,研究再生粗、细骨料取代率、再生细骨料粉体含量对再生混凝土导热性能的影响规律,并与同条件普通混凝土进行对比。研究结果表明,再生粗、细骨料可明显降低混凝土导热系数,再生粗骨料取代率为100%时,其导热系数比普通混凝土降低12.2%;再生粗骨料取代率为100%不变,其导热系数随着再生细骨料取代率的增大进一步降低,再生粗、细骨料取代率均为100%的全再生混凝土,其导热系数比普通混凝土减小23.6%;再生细骨料中粉体含量在7%以内对再生混凝土导热性能影响很小。最后进一步研究了玻化微珠对再生混凝土导热性能的影响。研究结果为再生骨料充分应用于自保温墙体砌块提供技术支持。
英文摘要:
      The influence of replacement ratio of recycled 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 aggregate(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 in recycled concrete was also studied. The conclusion can be used as reference in the application of self-insulation block.
View Fulltext   查看/发表评论  下载PDF阅读器
关闭