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Author:

Gong, Xing (Gong, Xing.) | Liu, Quantao (Liu, Quantao.) | Zou, Yingxue (Zou, Yingxue.) | Liu, Xuefei (Liu, Xuefei.) | Wang, Huan (Wang, Huan.) | Wan, Pei (Wan, Pei.) | Cao, Zhilong (Cao, Zhilong.) | Wu, Shaopeng (Wu, Shaopeng.)

Indexed by:

Scopus SCIE

Abstract:

The poor adhesion of asphalt-granite limits the application of granite. This research aims to enhance the adhesion of asphalt and granite by establishing chemical connections between the hydroxyl groups on granite surface and the incompletely reacted isocyanate groups in polyurethane (PU) modified asphalt. For this purpose, end-capped PU modified asphalt (PUMA) was prepared, the adhesion mechanism between PUMA and granite was analyzed by Raman spectroscopy, the adhesion properties between PUMA and granite at different curing periods were evaluated by boiling and pull-out tests, and the wettability of PUMA on granite and its moisture sensitivity were evaluated using surface free energy (SFE) method. The findings suggested that the incompletely reacted isocyanate groups in PUMA can establish a chemical connection with the hydroxyl groups on the surface of granite. The adhesion between asphalt and granite can be greatly improved by the addition of PU, and this improvement is amplified as the curing time is extended. When the curing time is extended to 3 days, the fracture mode between asphalt and granite changed from adhesive failure to cohesive failure, and after 15 days of curing, the coating ratio of PUMA on granite following the water boiling test can be raised by 28.11% in comparison to the base asphalt. The water damage resistance of PUMA-granite system can be increased by adding PU and the adhesion work and combination ratio of the freshly prepared PUMA were increased by 55.91% and 79.45%, respectively, as compared to base asphalt. This study has great significance for enhancing the adhesion between asphalt and granite and encouraging granite application.

Keyword:

Granite Polyurethane modified asphalt (PUMA) Interfacial adhesion End-capped polyurethane

Author Community:

  • [ 1 ] [Gong, Xing]Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China
  • [ 2 ] [Liu, Quantao]Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China
  • [ 3 ] [Zou, Yingxue]Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China
  • [ 4 ] [Wang, Huan]Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China
  • [ 5 ] [Wan, Pei]Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China
  • [ 6 ] [Wu, Shaopeng]Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China
  • [ 7 ] [Liu, Quantao]Wuhan Univ Technol, Adv Engn Technol Res Inst Zhongshan City, Zhongshan 528400, Peoples R China
  • [ 8 ] [Liu, Xuefei]Univ Sheffield, Fac Engn, Dept Civil & Struct Engn, Western Bank, Sheffield S102TN, England
  • [ 9 ] [Cao, Zhilong]Beijing Univ Technol, Dept Rd & Railway Engn, Beijing 100124, Peoples R China

Reprint Author's Address:

  • [Liu, Quantao]Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China;;[Liu, Quantao]Wuhan Univ Technol, Adv Engn Technol Res Inst Zhongshan City, Zhongshan 528400, Peoples R China

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Source :

JOURNAL OF MATERIALS IN CIVIL ENGINEERING

ISSN: 0899-1561

Year: 2025

Issue: 1

Volume: 37

3 . 2 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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