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Article
Field Implementation of Rubberized Chip Seal
Civil, Architectural and Environmental Engineering Technical Reports
  • Ahmed Gheni
  • Alireza Pourhassan
  • Mohamed ElGawady, Missouri University of Science and Technology
  • Yasser Darwish
  • William P. Schonberg, Missouri University of Science and Technology
Abstract

Chip seals have been widely used as a pavement maintenance surface treatment due to its competitive cost and construction time. Recently, the research team developed a rubberized chip seal where natural aggregate is replaced with crumb rubber obtained from recycled tires. During this study, a total of 108 laboratory specimens and a field chip seal section with different crumb rubber replacement ratios were investigated. Aggregate macrostructure, retention, and skid resistance were measured. The crumb rubber showed a remarkable performance in aggregate retention measured using the Vialit and Pennsylvania tests. The values of the mean texture depth of rubberized chip seal specimens were significantly higher than those of the conventional chip seal. Finally, while a reduction in the British Pendulum Number (BPN) was recorded with an increase in the crumb rubber replacement ratio immediately after construction, after a period of more than a year of service life in the experimental section road, the rubberized chip seal segments recorded a much higher BPN compared to that of the conventional chip seal segment. Furthermore, it is recommended also to increase the curing time for chip seal, regardless of aggregate type, to at least six hours to improve the performance of the chip seal.

Department(s)
Civil, Architectural and Environmental Engineering
Sponsor(s)

Missouri Department of Transportation

Comments

PREPARED FOR: Missouri Department of Transportation Construction and Materials Division Research Section

Funding: MoDOT project # TR201804

Final Report (September 2017-December 2018)

Keywords and Phrases
  • Chip seals,
  • Implementation,
  • Rubber
Report Number
CMR 18-012
Document Type
Technical Report
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2018 Missouri University of Science and Technology, All rights reserved.
Publication Date
12-1-2018
Publication Date
December 2018
Citation Information
Ahmed Gheni, Alireza Pourhassan, Mohamed ElGawady, Yasser Darwish, et al.. "Field Implementation of Rubberized Chip Seal" (2018)
Available at: http://works.bepress.com/mohamed-elgawady/95/