Study on Road Performance of Nano Graphene Modified Asphalt
In order to study the effects of nanographene on the performance and modification mechanism of asphalt road,the high-temperature,low-temperature,fatigue resistance,anti-aging properties and vis-coelastic properties of nanographene-modified asphalt were studied by means of pressure aging test(PAV),spinning thin film test(RTFOT),dynamic shear rheology test(DSR)and scanning electron microscope test-er.Secondly,the chemical composition and structure of nanographene-modified asphalt were characterized and analyzed,and the modification mechanism of nanographene was analyzed from a microscopic perspective.The results show that with the addition of nanographene,nanographene can have a strong affinity with hot as-phalt,which can improve the compatibility between modified asphalt and SBS,effectively interlayer and en-tangle the molecular segments of hot asphalt,and improve the high-temperature,low-temperature perform-ance and anti-aging performance of modified asphalt.
nano graphenehigh temperature performancelow temperature performancefatigue resist-anceanti-aging performancemodification mechanism
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