1. School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin Heilongjiang 150090, China;
2. Beijing Municipal Road & Bridge Building Materials Group Co., Ltd., Beijing 102600, China
Fatigue Performance of Warm Recycled Asphalt Mixture
YANG Li-ying1,2, TAN Yi-qiu1, DONG Yu-ming2, LI En-guang2
1. School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin Heilongjiang 150090, China;
2. Beijing Municipal Road & Bridge Building Materials Group Co., Ltd., Beijing 102600, China
摘要The mix of warm and hot recycled asphalt mixtures were determined after reclaimed asphalt mixture (RAP) analysis and mix design. With similar aggregate gradation, the RAP content in warm recycled asphalt mixture increased to 45%, guaranteeing good performance of the warm recycled mixture. Thus, the 30% RAP restriction in asphalt mixture was surpassed. The fatigue performance of the warm recycled asphalt mixture, its hot counterpart, and hot mix asphalt (HMA) was tested using the four-point bending test. The testing result indicates that, although the fatigue performance of warm recycled asphalt mixture is not as good as that of HMA, it is superior to that of the hot recycled asphalt mixture, especially at high strain levels. The fatigue life of warm recycled asphalt mixture is 1.5 times that of the hot recycled asphalt mixture.
Abstract：The mix of warm and hot recycled asphalt mixtures were determined after reclaimed asphalt mixture (RAP) analysis and mix design. With similar aggregate gradation, the RAP content in warm recycled asphalt mixture increased to 45%, guaranteeing good performance of the warm recycled mixture. Thus, the 30% RAP restriction in asphalt mixture was surpassed. The fatigue performance of the warm recycled asphalt mixture, its hot counterpart, and hot mix asphalt (HMA) was tested using the four-point bending test. The testing result indicates that, although the fatigue performance of warm recycled asphalt mixture is not as good as that of HMA, it is superior to that of the hot recycled asphalt mixture, especially at high strain levels. The fatigue life of warm recycled asphalt mixture is 1.5 times that of the hot recycled asphalt mixture.
基金资助:Supported by the National Program of International S&T Cooperation (No.2010DFB83490)
通讯作者:
YANG Li-ying, yangliying_q@sina.com
E-mail: yangliying_q@sina.com
引用本文:
杨丽英, 谭忆秋, 董雨明, 李恩光. 温拌再生沥青混合料疲劳性能研究[J]. Journal of Highway and Transportation Research and Development, 2013, 7(3): 7-10.
YANG Li-ying, TAN Yi-qiu, DONG Yu-ming, LI En-guang. Fatigue Performance of Warm Recycled Asphalt Mixture. Journal of Highway and Transportation Research and Development, 2013, 7(3): 7-10.
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2013, Vol. 7 
