Study on Low-Temperature Performance of Asphalt Mixture Impacted by Modified Asphalt and Polyester Fibers

Abstract:

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Low temperature crack plays an important role on the road safety and comfort. Indoor experiments were carried out to study the crack resistance of asphalt mixture. The results show that: fiber and SBS modified asphalt can increase the failure strain energy, the failure stress and the failure strain and reduce stiffness, thus can significantly improve the anti-cracking ability at low temperature; at a critical temperature of about -10°C, the splitting strength achieve a peak value correspondingly, and the asphalt mixture transforms from the viscoelastic status to the brittle status; the failure load and the failure strain of the three kinds of mixtures are in the sequence of modified asphalt mixture> fiber mixture> common asphalt mixture; the results of the J-integral strain energy test show that fiber asphalt mixture has the maximum resistance curve slope, which means it may have better anti-cracking ability than the SBS modified asphalt mixture; the fracture stiffness can be introduced to effectively evaluate the crack resistance of asphalt mixture.

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Periodical:

Edited by:

Weijun Yang and Qiusheng Li

Pages:

3886-3889

DOI:

10.4028/www.scientific.net/AMM.204-208.3886

Citation:

X. Yu and J. B. Huang, "Study on Low-Temperature Performance of Asphalt Mixture Impacted by Modified Asphalt and Polyester Fibers", Applied Mechanics and Materials, Vols. 204-208, pp. 3886-3889, 2012

Online since:

October 2012

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$35.00

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