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Materials 2015, 8(7), 4022-4033;

Optical and UV-Aging Properties of LDH-Modified Bitumen

State Key laboratory of Silicate Materials of Architectures, Wuhan University of Technology, Wuhan 430070, China
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Academic Editor: Maryam Tabrizian
Received: 24 May 2015 / Revised: 19 June 2015 / Accepted: 29 June 2015 / Published: 3 July 2015
(This article belongs to the Section Structure Analysis and Characterization)
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Layered double hydroxides (LDHs) are an ultraviolet-light (UV) resistant material. In this study, LDHs were used to modify bitumen. The optical and UV aging properties of LDHs modified bitumen were investigated. Firstly, the thin films of bitumen, with and without LDHs, were prepared. By using the UV-Vis spectrophotometer, absorbance, reflectance, and transmittance of bituminous thin film were evaluated. The morphology of LDHs-modified bitumen was observed by using fluorescence microscopy (FM). Finally, the aging resistance of LDH-modified bitumen was investigated by using the UV-aging oven. Results indicated that the LDHs, especially with 5 wt % in the bitumen, can effectively absorb and reflect the UV light and improve the UV-aging resistance of bitumen. This implied that the addition of LDHs into bitumen had the potential to prolong the service life of asphalt pavement. View Full-Text
Keywords: layered double hydroxides (LDHs); bitumen; optical; UV aging layered double hydroxides (LDHs); bitumen; optical; UV aging

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Liu, X.; Wu, S.; Liu, G.; Li, L. Optical and UV-Aging Properties of LDH-Modified Bitumen. Materials 2015, 8, 4022-4033.

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