吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (5): 1465-1471.doi: 10.13229/j.cnki.jdxbgxb201705018

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Coupling effect of the macro and micro characteristics of mineral powder on the low-temperature performance of asphalt mortar

ZHENG Chuan-feng1, 2, MA Zhuang1, GUO Xue-dong2, ZHANG Ting1, LYU Dan1, Qin Yong1   

  1. 1.College of Construction Engineering, Jilin University, Changchun 130026, China;
    2.College of Transportation, Jilin University, Changchun 130022, China
  • Received:2016-07-16 Online:2017-09-20 Published:2017-09-20

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Abstract: The coupling effects of the macro content and meso micro characteristics of mineral powder on the low-temperature performance of asphalt mortar were studied, and the macro content of the mineral powder was determined. The meso voids in unit mass of the mineral powder was measured based on the principle of Rigden void ratio. Based on the critical and fatigue damage control indicators, the optimum ratio of fixed asphalt to free asphalt in the asphalt mortar under different low-temperature conditions was determined, from which the optimum ratio of filler-asphalt can be obtained. Results show that the coupling of the macro content and meso micro characteristics of the mineral powder can be determined from the ratio of fixed asphalt to free asphalt. The results of this work are important for the improvement of the pavement performance of asphalt at low temperature.

Key words: road engineering, asphalt mortar, low-temperature performance, mineral powder, coupling effect

CLC Number: 

  • U414
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