• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 56 Issue 4
Jul.  2021
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Article Contents
XIAO Feipeng, ZONG Qidi, WANG Jingang, CHEN Jun, LIU Ji. Moisture Susceptibility of SBS and Coarse Crumb Rubber Composite Modified Asphalt Permeable Mixture[J]. Journal of Southwest Jiaotong University, 2021, 56(4): 839-846. doi: 10.3969/j.issn.0258-2724.20191116
Citation: XIAO Feipeng, ZONG Qidi, WANG Jingang, CHEN Jun, LIU Ji. Moisture Susceptibility of SBS and Coarse Crumb Rubber Composite Modified Asphalt Permeable Mixture[J]. Journal of Southwest Jiaotong University, 2021, 56(4): 839-846. doi: 10.3969/j.issn.0258-2724.20191116

Moisture Susceptibility of SBS and Coarse Crumb Rubber Composite Modified Asphalt Permeable Mixture

doi: 10.3969/j.issn.0258-2724.20191116
  • Received Date: 11 Dec 2019
  • Rev Recd Date: 04 Mar 2020
  • Available Online: 08 Apr 2020
  • Publish Date: 15 Aug 2021
  • Permeable asphalt concrete (PAC) possesses good capacity of drainage and noise reduction due to its large porosity. Nevertheless, it is prone to suffer water damage. Coarse crumb rubber (CCR) and styrene-butadiene-styrene block copolymer (SBS) were used to prepare composite modified asphalt. Freeze-thaw splitting tensile strength ratio (TSR) was employed to evaluate the moisture susceptibility of PAC. The influences of the contents of SBS, coarse crumb rubber, asphalt binder, and hydrated lime as well as the nominal maximum particle size (NMPS) and passing percentage of key sieve sizes on the moisture susceptibility of PAC were explored to reveal the moisture damage resistance mechanism of SBS and CCR composite modified asphalt (SBS/CRMA) mixture. The results indicate that the increases in SBS content, the NMPS of aggregates, and the addition of slaked lime can effectively increase the TSR value. To optimize moisture susceptibility and cost efficiency, it is recommended that the favorable contents of SBS and CCR are 6% and 10%, respectively. Moreover, through grey relational analysis, the key sieve sizes that affect the moisture susceptibility of permeable asphalt mixtures with various NMPS were presented as well.

     

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