In order to solve the rapid performance degradation of asphalt pavement in plateau regions,a chip seal was designed based on the modified high-elasticity asphalt mixed with nano-TiO2 powders(MHEA chip seal),and the pavement performances of MHEA chip seal were evaluated through labo-ratory experiments.The results show that the addition of nano-TiO2 can effectively delay the attenua-tion of penetration and tensile strength of modified high-elasticity asphalt after UV aging,thereby en-hancing the anti UV aging performance of asphalt.Meanwhile,MHEA chip seal exhibits excellent an-ti-slide performance,waterproofness,low-temperature bonding performance between crushed stone and asphalt and UV-aging resistance,which is potential for application in plateau regions.
modified asphalt with high-elasticitynano-TiO2chip sealUV aging
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