Research Article Study of Antiultraviolet Asphalt Modifiers and Their Antiageing Effects Jinxuan Hu, 1 Shaopeng Wu, 1 Quantao Liu, 1 María Inmaculada García Hernández, 1 Wenbo Zeng, 1 and Wenhua Xie 2 1 State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, China 2 Wuhan Youfeng Moulding Co. Ltd., Wuhan, China Correspondence should be addressed to Shaopeng Wu; wusp@whut.edu.cn Received 10 June 2017; Accepted 31 July 2017; Published 7 September 2017 Academic Editor: Frederic Dumur Copyright © 2017 Jinxuan Hu et al. Tis is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Ultraviolet (UV) radiation causes serious ageing problems on pavement surface. In recent years, diferent UV blocking materials have been used as modifers to prevent asphalt ageing during the service life of the pavement. In this study, three diferent materials have been used as modifers in base asphalt to test their UV blocking efects: layered double hydroxides (LDHs), organomontmorillonite (OMMT), and carbon black (CB). UV ageing was applied to simulate the ageing process and sofening point, penetration, ductility, DSR (Dynamic Shear Rheometer) test, and Fourier Transform Infrared Spectroscopy (FTIR) test were conducted to evaluate the anti-UV ageing efects of the three UV blocking modifers. Physical property tests show that base asphalt was infuenced more seriously by UV radiation compared to the modifed asphalt. DSR test results indicate that the complex modulus of asphalt before UV ageing is increased because of modifers, while the complex modulus of base asphalt afer UV ageing is higher than that of the modifed asphalt, which shows that the UV blocking modifers promote the antiageing efects of asphalt. FTIR test reveals that the increment of carbonyl groups and sulfoxide groups of modifed asphalt is less than that in base asphalt. Tests indicate the best UV blocking efect results for samples with LDHs and the worst UV blocking efect results for samples with CB. 1. Introduction Asphalt has been used for road construction for more than a century [1–3]. Compared with cement pavement, asphalt pavement has remarkable advantages in comfortableness and smoothness [4, 5]. However, the UV radiation leads to a shorter lifespan of the pavement. A set of complex physicochemical processes happen because of the exposition of the asphalt pavement to UV radiation and result in a harder and more brittle asphalt [6, 7]; as a result, low temperature cracking and fatigue cracks are more likely to occur on the pavement [8, 9]. Under these circumstances, it is an urgent task to develop the method to prevent the ageing of asphalt. Termooxidative degradation of asphalt has been investi- gated deeply, but the efects of UV radiation on asphalt binder ageing have been given little attention in previous researches [10]. Although some researchers [11, 12] showed that UV radiation only afects the upper layers of asphalt pavement, the efect of UV radiation on asphalt cannot be ignored. Studies [13] have shown that UV radiation afer RTFOT could age a thin flm of asphalt to the same ageing level as the one aged by PAV in a few hours. Researchers adopted modifers such as UV absorbents [14, 15], LDHs [16–18], and nanomaterials [19] to improve the UV ageing resistance of asphalt. CB is an organic protective material with high absorbance to UV radiation, as a UV absorber has the potential to improve the UV ageing resistance and enhances the low temperature properties [20]. Cong et al. [10] used CB to refect and absorb UV radiation in asphalt. Results show that low temperature properties of CB modifed asphalt were better than unmodifed asphalt afer UV ageing. Montmorillonite (MMT) nanocomposite is a phyllosili- cate nanomaterial which has been used for the modifcation of polymers [21, 22]. Nanosize layers of MMT could be dis- persed into the polymer matrix due to the fact that polymer Hindawi Advances in Materials Science and Engineering Volume 2017, Article ID 9595239, 9 pages https://doi.org/10.1155/2017/9595239