Optical and UV-Aging Properties of LDH-Modified Bitumen

Materials

Xing Liu¹  Shaopeng Wu¹  Gang Liu¹  Liping Li² 

[1] State Key laboratory of Silicate Materials of Architectures, Wuhan University of Technology, Wuhan 430070, China;

关键词: layered double hydroxides (LDHs);    bitumen;    optical;    UV aging;   

DOI  :  10.3390/ma8074022

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.