- 综合性科技类中文核心期刊
- 中国科技论文统计源期刊
- 中国科学引文数据库来源期刊
- 中国学术期刊文摘数据库（核心版）来源期刊
- 中国学术期刊综合评价数据库来源期刊
| Citation: |
LI Guofeng, HAO Peiwen, JIANG He, XU Jinzhi, LI Zhigang, WANG Hong. Impacts of Freeze-Thaw Cycles on Microscopic Characteristics of Recycled Mixture Using Foamed Asphalt[J]. Journal of Beijing University of Technology, 2017, 43(10): 1508-1513. DOI: 10.11936/bjutxb2017020008
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In order to explore decay rule of moisture damage resistance of cold recycled mixture using foamed asphalt, 6 kinds of gradation cold recycled mixture using foamed asphalt was selected to study strength characteristics. Meanwhile, the indirect tensile strength test and computerized tomography (CT) test were conducted to analyze air voids gradation and the most probable air voids diameter under different freeze-thaw cycles. As the freeze-thaw cycle increased, the strength of the recycled mixture prominently reduced, the micro-void significantly decreased, while the large gap increased significantly. The CT and indirect tensile strength (ITS) test results show that the more the micro-void is, the higher the strength when they have the same total air voids. The more the large volume voids is, the lower the strength of specimens. The division method of air voids which is in cold recycled mixture of using foamed asphalt was put forward. The first two freeze-thaw cycles of cold recycled mixture had significant influence. The larger the initial void volume is, the larger the most probable air void is.
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