The Effect of Surface-modified Nano-titania on the Ultraviolet Aging Properties of Bitumen

C. H. LiuKey Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science & Technology, Changsha, China

H. L. ZhangCollege of Civil Engineering, Hunan University, Changsha, ChinaCorrespondence[email protected]

S. LiKey Laboratory of Special Environment Road Engineering of Hunan Province, Changsha University of Science & Technology, Changsha, China

C. Z. ZhuCollege of Civil Engineering, Hunan University, Changsha, China

Abstract

The effect of surface modification of nano-titania on ultraviolet (UV) aging properties of bitumen was investigated. The results show that γ-(2,3-epoxypropoxy) propytrimethoxysilane is bound on the surface of nano-titania according to Fourier transform infrared spectroscopy analysis. The dispersion stability of nano-titania in bitumen is improved by surface modification of nano-titania. Viscosity aging index values and carbonyl indexes of the bitumen are decreased by adding nano-titania. After surface modification, the UV aging resistance of nano-titania modified bitumen can be further improved. The result suggests that nano-titania can be effectively used as a modifier to improve the UV aging resistance of bitumen.

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The Effect of Surface-modified Nano-titania on the Ultraviolet Aging Properties of Bitumen

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The Effect of Surface-modified Nano-titania on the Ultraviolet Aging Properties of Bitumen

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