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| 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. |
| 关键词: 再生混凝土,耐久性指数,冻融循环 |
| DOI： |
| 分类号:TU528.79 |
| 基金项目:辽宁工程技术大学博士科研启动基金资助项目(70DZ45) |
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| Experimental Research on Freezing-Thawing Cycle of Recycled Aggregate Concrete |
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CUI Zheng-long OHAGA Yoshi-ki KITATSUJI Masa-humi TANAKA Rei-ji
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| Abstract: |
| 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. |
| Key words: recycled aggregate concrete,durability factor,freeze-thawing circulation |
