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Article Navigation >  Journal of Traffic and Transportation Engineering  > 2018  >  18(6): 10-17
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LIU Hai-peng, JIANG Ying-jun, XUE Jin-shun, FANG Jian, CHEN Zhe-jiang, LI Shou-wei. Gradation optimization of thermal resistant SMA-13 asphalt mixture[J]. Journal of Traffic and Transportation Engineering, 2018, 18(6): 10-17. doi: 10.19818/j.cnki.1671-1637.2018.06.002
Citation: LIU Hai-peng, JIANG Ying-jun, XUE Jin-shun, FANG Jian, CHEN Zhe-jiang, LI Shou-wei. Gradation optimization of thermal resistant SMA-13 asphalt mixture[J]. Journal of Traffic and Transportation Engineering, 2018, 18(6): 10-17. doi: 10.19818/j.cnki.1671-1637.2018.06.002
shu

Gradation optimization of thermal resistant SMA-13 asphalt mixture

doi: 10.19818/j.cnki.1671-1637.2018.06.002
  • 1.

    Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China

  • 2.

    Quality Supervision Station of Jinhua Communications, Jinhua 321000, Zhejiang, China

  • 3.

    Highway Administration Bureau of Jinhua, Jinhua 321000, Zhejiang, China

More Information
  • Author Bio:

    LIU Hai-peng (1970-), male, doctoralstudent, 2015021060@chd.edu.cn

    JIANG Ying-jun (1975-), male, professor, PhD, jyj@chd.edu.cn

  • Received Date: 2018-08-23
  • Publish Date: 2018-12-25
    Abstract
  • In order to study the optimal dosage of refractory gravel in the thermal resistant SMA-13 asphalt mixture, the mixture proportion schemes were designed.In the schemes, the volume content of refractory gravel in the 2.36-4.75 mm ordinary aggregate was 100%, the volume content in the 4.75-9.5 mm ordinary aggregate was 20%, 40%, 60%, 80%, and 100%, respectively, and the volume content in the 9.5-13.2 mm ordinary aggregate was 10%, 20%, and 30%, respectively.The influence laws of refractory gravel content on the road property and heat resistant property of the SMA-13 asphalt mixture were studied, the optimum content ofrefractory gravel was put forward, and the road performance and thermal resistant performance of the SMA-13 asphalt mixture with this content were analyzed.Research result shows that compared with the ordinary SMA-13 asphalt mixture, when the 2.36-4.75 mm aggregate is entirely replaced by the refractory gravel, the road performance of the thermal resistant SMA-13 asphalt mixture reduces by about 3%, and the temperature of specimen decreases by about 1.4 ℃.When the 4.75-9.5 mm refractory gravel accounts for 60% of the same particle size of ordinary aggregates, the road performance of the thermal resistant SMA-13 asphalt mixture reduces by5%-10%, the temperature of the specimen decreases by about 5.7 ℃, and the heat resistance effect is obvious.When the content of the 4.75-9.5 mm refractory gravel is more than 60%, the road performance of the thermal resistant SMA-13 asphalt mixture decays rapidly, and the heat resistance effect is not obvious.When the content of the 4.75-9.5 mm refractory gravel is 60%-80%, the road performance of the thermal resistant SMA-13 asphalt mixture reduces by 10%-20%, and the temperature of the specimen decreases by less than 0.7 ℃.When the 9.5-13.2 mm refractory gravel accounts for 10%-20%of the same particle size of ordinary aggregates, the road performance of the thermal resistant SMA-13 asphalt mixture does not change basically, but the heat resistance effect is obvious.When the content reaches 20%, the road performance decreases by around 13%, and the temperature of the specimen decreases by about 7 ℃.When the content exceeds 20%, the road performance decreases sharply, the temperature of the specimen increases only by 0.1℃, and there is not heat resistance effect.Based on the best principle of cooling effect of the thermal resistant SMA-13 asphalt mixture, it is suggested that the contents of 2.36-4.75, 4.75-9.5and 9.5-13.2 mm refractory gravels account for 100%, 60%, and 20% of the same particle size of ordinary aggregates, respectively.

     

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