Experimental Study on Asphalt Composite UV Absorption Anti-aging Agent

摘要

In order to compound high performance asphalt UV absorption anti-aging agent, light screener, antioxidant, light stabilizer were used in experiment, ultraviolet rays aging equation of asphalt was established, |m/nP_o|was used to stand for final aging quantity of asphalt pavement, aging equation and |m/nP_o| were used to research the performance of UV absorption anti-aging agent in different compound mode, optimum composite system of asphalt composite UV absorption anti-aging agent was found, and compliance dosage of components in optimum composite system was research after then. The results of the study show that: The aging law of asphalt ultraviolet radiation aging follows the equation next, p(t)=m/n[1+(m-(P_o×n)×e)/P_o×n-mt] asphalt UV absorption anti-aging agent composed by 5% antioxidant and 1.5% light stabilizer have the best anti-aging performance to UV radiation.