Pavement performance of warm mix open graded friction course mixtures with asphalt rubber

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Journal of Dalian Maritime University ›› 2015, Vol. 41 ›› Issue (4) : 108-114.

GUO Nai-sheng*,JING Hua-long, LV Sheng, ZHAO Ying-hua

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Abstract

To potentially employ warm mix asphalt in open graded friction course (OGFC) mixtures, the pavement performance of the OGFC mixture including two warm mix asphalt (WMA) additives (S-I, Evotherm-DAT) with asphalt rubber was evaluated through laboratory tests. Results show that the performance tests of warm mix OGFC mixtures with asphalt rubber exhibite a slight distinction as compared with that of hot mix OGFC mixtures with asphalt rubber, and both can meet the requirements of the technical specifications (JTG F40-2004). The addition of the WMA additives into the OGFC mixtures with asphalt rubber decrease the moisture resistance. However, after five freezethaw cycles, the moisture resistance of Evotherm-DAT warm mix OGFC mixture with asphalt rubber is much better than hot mix OGFC mixtures with asphalt rubber.

Key words

warm mix asphalt / open graded friction course(OGFC) / asphalt rubber / pavement performance / freeze-thaw

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GUO Nai-sheng，JING Hua-long, LV Sheng, ZHAO Ying-hua. Pavement performance of warm mix open graded friction course mixtures with asphalt rubber[J]. Journal of Dalian Maritime University. 2015, 41(4): 108-114

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