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. 2020 Jul 8;10:11216. doi: 10.1038/s41598-020-68007-0

Figure 6.

Figure 6

Complex shear modulus G* and phase angle δ of bitumen modified with CS-NPs after UV aging of 6 days (a, c, e, g) and 12 days (b, d, f, h); bitumen samples of different concentrations: without CS-NPs (a, b), with 0.1 wt.% of CS-NPs (c, d), with 0.2 wt.% of CS-NPs (e, f), and with 0.3 wt.% of CS-NPs (e, g).