Print Email Facebook Twitter Surface Modification of Steel Slag Aggregate for Engineering Application in Asphalt Mixture Title Surface Modification of Steel Slag Aggregate for Engineering Application in Asphalt Mixture Author Niu, D. (Chang'an University) Zhang, Zhao (Chang'an University) Meng, Jiandang (Puyang Branch Office of Henan Transport Development Group Co., Ltd.) Yang, Zhengxian (Fuzhou University) Jing, R. (TU Delft Pavement Engineering) Liu, X. (TU Delft Pavement Engineering) Lin, P. (TU Delft Pavement Engineering) Sheng, Yanping (Chang'an University) Date 2022 Abstract The proper disposal of steel slag has always been a great challenge for the metallurgical industry in China and around the world. In this work, the steel slag aggregate (SSA) was surface pretreated (PSSA) and applied into asphalt mixture. The adhesive behavior between the bitumen and five different types of aggregates (i.e., limestone, diorite, diabase, SSA, PSSA) were evaluated based on the contact angle and binder bond strength tests. The pavement performance of three asphalt mixtures which contain normal aggregate, SSA and PSSA respectively, was analyzed by Marshall stability test, wheel-tracking rutting test, low-temperature bending creep test and water sensitivity test. The results showed that surface modification can improve the surface properties of SSA, reduce its contact angle with bitumen, and eventually lead to the improvement of adhesion between them. In addition to the satisfied low-temperature properties, PSSA was found to significantly improve the anti-rutting property and reduce the water sensitivity of asphalt mixture. This work is expected to promote an alternative application for recycling of SSA in pavement engineering. Subject pretreated steel slag aggregateasphalt mixtureperformance characterizationadhesionsurface energy To reference this document use: http://resolver.tudelft.nl/uuid:e7fdb43f-e571-4ac6-b751-adea967db129 DOI https://doi.org/10.3390/buildings13010016 ISSN 2075-5309 Source Buildings, 13 (1), 1-20 Part of collection Institutional Repository Document type journal article Rights © 2022 D. Niu, Zhao Zhang, Jiandang Meng, Zhengxian Yang, R. Jing, X. Liu, P. Lin, Yanping Sheng Files PDF buildings_13_00016.pdf 5.3 MB Close viewer /islandora/object/uuid:e7fdb43f-e571-4ac6-b751-adea967db129/datastream/OBJ/view