Print Email Facebook Twitter Evaluation of the Physicochemical Properties and Antiaging Properties of Bitumen Mastic Modified by Layered Double Hydroxides Title Evaluation of the Physicochemical Properties and Antiaging Properties of Bitumen Mastic Modified by Layered Double Hydroxides Author Zou, Yingxue (Wuhan University of Technology) Pang, Ling (Wuhan University of Technology) Chen, Shuaichao (Wuhan University of Technology) Xu, S. (TU Delft Materials and Environment; Wuhan University of Technology) Wu, Shaopeng (Wuhan University of Technology) Amirkhanian, Serji (University of South Alabama) Xu, Haiqin (Wuhan University of Technology) Zhao, Zenggang (Wuhan University of Technology) Date 2023 Abstract Layered double hydroxides (LDHs) can shield polymeric materials from UV light, which allows reducing material aging and erosion damage of bituminous pavement under physical and chemical action. In this study, the physicochemical properties, aging resistance, and erosion resistance to the aqueous solution of LDHs modified bitumen mastic (BM) were characterized by Fourier-transform infrared spectroscopy, basic physical tests, viscosity tests, a dynamic shear rheometer, and a bending beam rheometer. The results show that few chemical reactions occurred between LDHs and BM, indicating that a physical mechanism underlay the modification of BM by LDHs. Moreover, LDHs could increase the flow activation energy of BM by 0.12%, increase the high failure temperature from 69.07 °C to 71.07 °C, and decrease the low failure temperature from −10.50 °C to −12.39 °C. Therefore, LDHs could slightly reduce the temperature sensitivity of BM, while slightly enhancing the high and low-temperature rheological properties of BM. Compared with short-term aging and long-term aging, LDHs could significantly improve the UV aging resistance of BM. The above results are consistent with previous studies of LDHs-modified bitumen. Furthermore, water and pH 3 acidic solutions had the greatest degree of erosion to BM, and LDHs could improve the resistance to aqueous solutions. Overall, this study can help to investigate the effects of various environmental factors on the performance of LDHs modified bitumen pavements during long-term use. Subject bitumenmasticlayered double hydroxideaging conditionswater erosionphysicochemical propertiesantiaging properties To reference this document use: http://resolver.tudelft.nl/uuid:766006bc-5579-4cc0-9122-4de04432e0dc DOI https://doi.org/10.3390/su15021546 ISSN 2071-1050 Source Sustainability, 15 (2) Part of collection Institutional Repository Document type journal article Rights © 2023 Yingxue Zou, Ling Pang, Shuaichao Chen, S. Xu, Shaopeng Wu, Serji Amirkhanian, Haiqin Xu, Zenggang Zhao Files PDF sustainability_15_01546.pdf 4.06 MB Close viewer /islandora/object/uuid:766006bc-5579-4cc0-9122-4de04432e0dc/datastream/OBJ/view