The healing property has a great influence on the strength and lifespan of asphalt pavement. This study point out the dichotomy between self-healing property and strength in polymer modified asphalt. Afterwards, high-efficient self-healing asphalt was designed by incorporating ethylene methyl acrylate (EMAA) copolymer into base asphalt. T-peel healing test was employed to analyze the relationship between self-healing strength and various rest times and several temperatures. At last, the self-healing abilities of base asphalt and ionomer modified asphalt were evaluated. The results demonstrated that the relationship between the asphalt healing strength and the rest times follows power function. Meanwhile, EMAAs hold the potential to enhance self-healing ability of base asphalt. It is speculated that ionic bond is responsible for the improvement of healing ability of ionomer modified asphalt. This study provides a new insight into the research of the healing mechanism and evaluation methodology.
Investigation on the Self-Healing Abilities of Base and Ionomer-Modified Asphalt Binders with a T-Peel Test
2015 International Symposium on Frontiers of Road and Airport Engineering ; 2015 ; Shanghai, China
2015-10-22
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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