摘要
为了进一步研究再生混凝土耐久性的各种指标,对再生混凝土的冻融循环抵抗性做了基础性试验研究.试验以100%再生骨料替代天然碎石和砂子制备再生混凝土,以水灰比0.45,0.55为变动因素.试验结果表明,100%再生混凝土试件的冻融循环抵抗性与粗、细骨料置换率为0的普通混凝土试件相比,当水灰比为0.45,0.55时其耐久性指数分别降低6%和10%,但都能满足评价混凝土冻融循环抵抗性的最低指标.
In order to study various factor affecting durability of recycled aggregate concrete, basic experimental research on the freezing-thawing resistance of recycled aggregate concrete was conducted. 100% recycled aggregate instead of natural macadam and sand was used to prepare recycled aggregate concrete with water cement ratio of 0.45, 0.55 as changing factors. The experiment result shows that the freezing-thawing resistance of specimen using 100% recycled aggregate concrete is enhenced compared with the normal concrete whose coarse and fine aggregate＇s replacement ratio is 0, and the durability factor with water cement ratio of 0.45 and 0.55 decreases by 6% and 10% respectively, both can satisfy the lowest factor for evaluating freezing -thawing resistance.
出处
《建筑材料学报》
EI
CAS
CSCD
2007年第5期534-537,共4页
Journal of Building Materials
基金
辽宁工程技术大学博士科研启动基金资助项目(70DZ45)
关键词
再生混凝土
耐久性指数
冻融循环
recycled aggregate concrete
durability factor
freeze-thawing circulation
