Effect of Different Media Aqueous Solution on Road Performance of Asphalt Mixtures

Abstract:

Servicing in the natural environment, asphalt pavement is often exposed to the various aqueous solution, however, the effect of different media aqueous solution on road performance of asphalt mixtures remains ambiguous. In this study, the influences of water, acid, alkali and salt solution on volume of air voids (VV), tensile strength rate (TSR), low temperature performance of 70^# asphalt mixtures and SBS modified asphalt mixtures were investigated through freeze-thaw cycles test, void ratio test, Lottman test and Three-point Bending Fracture (TBF) test. The results indicated that freeze–thaw cycles influenced the road performance of asphalt mixtures significantly, increased the air void of asphalt mixtures, and reduced tensile strength ratio and failure strain of asphalt mixtures. Compared with the distilled water, the damage of acid, alkali and salt solution on the road performances of asphalt mixtures were more serious, especially alkali solution to tensile strength rate and failure strains in low temperature, and salt solution to VV. The moisture corrosion resistance of SBS modified asphalt mixtures is better than that of 70^# asphalt mixtures.

• Periodical: Materials Science Forum (Volume 913)
• Pages: 1070-1075
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.913.1070
• Online since: February 2018
• Authors: Xue Mei Zhang, Ling Pang*, Shao Peng Wu, Guo Fu Zhang
• Keywords: Aqueous Solutions, Asphalt Mixtures, Freeze-Thaw Cycles, Road Performance

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