Evaluation of the performance of SBS/CR composite-modified deicing asphalt mixture prepared for ultra-thin wearing course

Deicing agents may compromise the performance of asphalt mixture. This article aims to study the feasibility of using styrene-butadiene-styrene (SBS)/crumb rubber (CR) modifier to prepare a deicing asphalt mixture with satisfactory performance for ultra-thin wearing course. High/low-temperature performance, water stability and deicing-related performances of the asphalt mixture were evaluated by conducting a series of laboratory tests from micro to macro level considering different incorporation rates of anti-freezing agent and SBS/CR modifier. The results find that SBS/CR modification enhances the high and low-temperature properties of the binder, and optimal incorporation ratios are 2% and 16%, respectively. The addition of anti-freezing agents as the filling material improves the high-temperature performance of the mortar, but negatively affects low-temperature performance. For asphalt mixtures, anti-freezing agents can enhance high-temperature performance by up to 56%, with only a minor impact on anti-sliding properties. However, they harm the low-temperature performance and water stability. A recommended maximum replacement ratio of 80% achieves satisfactory results in dynamic stability (11,053 times/mm), flexural strength (8.41 MPa), tensile strain (3011.08E−6), Marshall stability (9.61 MPa), Marshall residual stability ratio (81.28%), and free-thaw splitting ratio (80.30%), meeting the engineering standards. An Anti-freezing agent replacement ratio from 20% to 100% correlates linearly with a snow-melting rate of 16.3%− 96.8% and a deicing rate of 9.4%− 57.0%. The conductivity of soaking solution has been identified as a valuable indicator for predicting the asphalt functionality. This research can provide valuable insights into the mixture design and facilitate the practical implementation of this innovative functional material.

• Record URL:
  • https://doi.org/10.1016/j.conbuildmat.2024.135085
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0950061824002265
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09500618
• Supplemental Notes:
  • © 2024 The Authors. Published by Elsevier Ltd. Abstract reprinted with permission of Elsevier.
• Authors:
  • Sun, Zhilun
  • Chen, Jian
  • Liu, Shu
  • 0000-0003-0448-6186
  • Qian, Jingbang
  • Huang, Rui
• Publication Date: 2024-2-16

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Photos; References; Tables;
• Pagination: 135085
• Serial:
  • Construction and Building Materials
  • Volume: 416
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0950-0618
  • Serial URL: http://www.sciencedirect.com/science/journal/09500618?sdc=1

Subject/Index Terms

• TRT Terms: Asphalt additives; Asphalt mixtures; Crumb rubber; Deicing; Pavement wearing course; Styrene butadiene styrene
• Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements;

Filing Info

• Accession Number: 01910498
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 29 2024 3:53PM