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This paper analyses the performance differences between desulphurised rubber powder composite SBS-modified asphalt (ACR\/SBS), rubber powder composite SBS-modified asphalt (CR\/SBS) and SBS-modified asphalt and their mixtures by multi-stress repeated creep recovery (MSCR) and submerged Hamburg rutting tests. In addition, fluorescence microscopy was used to reveal the micro-mechanisms underlying the differences in the high-temperature performance of the three asphalts. The results show that the twin-screw desulphurisation of rubber powder can significantly improve the high-temperature performance and water damage resistance of its composite-modified asphalt and mixture. The rutting depth of ACR\/SBS-MA mixes was one-third and one-thirteenth of CR\/SBS-MA mixes and SBS-MA mixes, respectively, under the hydrothermal coupling condition at 80 \u00b0C. The cross-linking bonds were opened during the twin-screw desulphurisation process to form a stable cross-linking network structure with SBS. The research of this thesis can lay theoretical and technical support for the promotion and application of desulphurised rubber-modified asphalt.<\/jats:p>","DOI":"10.3390\/ma18030480","type":"journal-article","created":{"date-parts":[[2025,1,21]],"date-time":"2025-01-21T08:46:26Z","timestamp":1737449186000},"page":"480","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Research on the High-Temperature Stability of Twin-Screw Desulphurised Rubber Powder Composite SBS-Modified Asphalt and Its Mixtures"],"prefix":"10.3390","volume":"18","author":[{"given":"Dongna","family":"Li","sequence":"first","affiliation":[{"name":"School of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yongning","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China"},{"name":"Gansu Provincial Transportation Planning Survey and Design Institute Co., Ltd., Lanzhou 730030, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jingzhuo","family":"Zhao","sequence":"additional","affiliation":[{"name":"Gansu Provincial Transportation Planning Survey and Design Institute Co., Ltd., Lanzhou 730030, China"},{"name":"School of Ecology and Environment, Xinjiang University, \u00dcr\u00fcmqi 830046, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-0534-4271","authenticated-orcid":false,"given":"Fucheng","family":"Guo","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bo","family":"Li","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8539-0420","authenticated-orcid":false,"given":"Tengfei","family":"Yao","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,1,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"134219","DOI":"10.1016\/j.jclepro.2022.134219","article-title":"Rutting and strain characteristics of rubberized asphalt pavement based on accelerated pavement tester","volume":"376","author":"Zhao","year":"2022","journal-title":"J. Clean. Prod."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"132813","DOI":"10.1016\/j.conbuildmat.2023.132813","article-title":"Comparing bio-binders, rubberised asphalts, and traditional pavement technologies","volume":"400","author":"Pratico","year":"2023","journal-title":"Constr. Build. Mater."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Xie, J., Zhang, Y., and Yang, Y. (2020). Study on Preparation Method of Terminal Blend Rubberized Asphalt Binder. Front. Mater., 7.","DOI":"10.3389\/fmats.2020.00279"},{"key":"ref_4","first-page":"226","article-title":"Composition and Viscoelasticity of Asphalt Modified with Crumb Rubber Pre-desulfurized by Waste Cooking Oil","volume":"32","author":"Dong","year":"2019","journal-title":"China J. Highw. Transp."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1727","DOI":"10.32604\/jrm.2022.018467","article-title":"Mechanism behind Time Dependent Elasticity of Crumb Rubber-Nano-Asphalt Hybrids Using Discrete Relaxation Spectrum","volume":"10","author":"Han","year":"2022","journal-title":"J. Renew. Mater."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"123820","DOI":"10.1016\/j.conbuildmat.2021.123820","article-title":"A review on compatibility between crumb rubber and asphalt binder","volume":"297","author":"Zheng","year":"2021","journal-title":"Constr. Build. Mater."},{"key":"ref_7","first-page":"320","article-title":"Rheological Properties of the Asphalt Modified by the Activated Rubber in the Presence of Waste Engine Oil","volume":"21","author":"Zhang","year":"2018","journal-title":"J. Build. 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