ZHOU Zhi-gang, YANG Yin-pei, ZHANG Qing-ping, GAO Ji-yang. Recycling behavior of recycling agent on aged asphalt[J]. Journal of Traffic and Transportation Engineering, 2011, 11(6): 10-16. doi: 10.19818/j.cnki.1671-1637.2011.06.002
Citation: ZHOU Zhi-gang, YANG Yin-pei, ZHANG Qing-ping, GAO Ji-yang. Recycling behavior of recycling agent on aged asphalt[J]. Journal of Traffic and Transportation Engineering, 2011, 11(6): 10-16. doi: 10.19818/j.cnki.1671-1637.2011.06.002

Recycling behavior of recycling agent on aged asphalt

doi: 10.19818/j.cnki.1671-1637.2011.06.002
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  • Author Bio:

    ZHOU Zhi-gang (1966-), male, professor, PhD, +86-731-85258256, zzgcs@yahoo.com.cn

  • Received Date: 2011-07-16
  • Publish Date: 2011-12-25
  • The action mechanism of recycling agent on aged asphalt and the influence on the performance indicators of recycling asphalt were studied, Fourier transform infrared spectroscopy test and the component test of recycling asphalt were used to analyze the role of recycling agent on aged asphalt.The nonlinear relationship model of recycling asphalt component content and recycling agent mixing ratio was proposed.Depending on the experimental results of Brookfield viscosity, penetration and dynamic shear rheometer(DSR) for recycling asphalts with different recycling agent mixing ratios, the improvement of recycling agent on aged asphalt properties was analyzed, relationships among recycling agent mixing ratio and every index were summarized.Test result shows that there is no chemical reaction between recycling agent and aged asphalt, the interrelated coefficient of nonlinear relationship model for recycling asphalt component content and recycling agent mixing ratio is above 0.98.Viscosity sensitivity decreases, and penetration sensitivity increases with the increase of recycling agent mixing ratio.The logarithms of complex modulus and anti-rutting factor have good linear decreasing relationships with recycling agent mixing ratio, and the mixing ratio should be determined by recycling asphalt mixture performance test.

     

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