Journal Published Online: 08 February 2016
Volume 44, Issue 2

Rutting-Resistance Performance of SBS and Anti-Rutting Additive Composite-Modified Asphalt-Concrete Mixtures

CODEN: JTEVAB

Abstract

To improve the rutting resistance of the middle hot-mix asphalt (HMA) surface layer, composite modification of asphalt-concrete (AC) mixture by styrene–butadiene–styrene (SBS) and anti-rutting additive (ARA) was studied. First, the wheel-tracking test, bending test, and indirect tensile test were conducted to evaluate the effect of three dosages of ARA on the high-temperature performance, low-temperature performance, and moisture susceptibility of SBS-modified AC mixture and the optimum dosage of ARA was determined. Then the high-temperature rutting-resistance performance of composite-modified AC mixtures was studied through the dynamic modulus test and uniaxial creep test. The results showed that the high-temperature performance of composite-modified AC mixture was significantly improved, but the low-temperature performance and moisture susceptibility were slightly declined compared to the control mixture (SBS-modified AC mixture without ARA). The values of E*/sinφ of composite-modified AC mixture were larger than those of the control mixture at various test temperatures and loading frequencies. The values of permanent deformation and creep rate of composite-modified AC mixtures were smaller than those of the control mixture. In conclusion, composite-modified AC mixture has excellent high-temperature stability.

Author Information

Cao, W.
School of Civil Engineering, Shandong Univ., Jinan, Shandong Province, CN
Liu, S.
School of Civil Engineering, Shandong Univ., Jinan, Shandong Province, CN
Li, Y.
Highway Bureau, Shandong Province Transport Dept., Jinan, Shandong Province, CN
Xue, Z.
Highway Bureau, Shandong Province Transport Dept., Jinan, Shandong Province, CN
Pages: 9
Price: $25.00
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Stock #: JTE20150024
ISSN: 0090-3973
DOI: 10.1520/JTE20150024