Effects of UV Aging on Physical Properties and Physicochemical Properties of ASA Polymer-Modified Asphalt

Figure 13

2D spectrogram of 70# base modified asphalt at different UV aging stages. (a) 76.25 h-2D. (b) 152.5 h-2D. (c) 228 h-2D. (d) 305 h-2D.

(a)

(b)

(c)

(d)