Friction and fracture characteristics of engineered crumb-rubber concrete at microscopic lengthscale

Ange Therese Akono*, Jiaxin Chen, Sakdirat Kaewunruen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Using small-scale depth-sensing techniques, we investigate the friction and hardness of engineered crumb rubber-reinforced concrete with applications into railway sleeper ties. The partial replacement of aggregates with crumb rubber particle leads to an increase in the friction coefficient and the fracture toughness, and a slight decrease in strength properties. Moreover, improper bonding at the cement/rubber interface is shown to result in poor strength characteristics. Furthermore, crumb rubber particles contribute to a higher durability as evidenced by sustained high values of the friction coefficient even in presence of surface lubrication with water or oil.

Original languageEnglish (US)
Pages (from-to)735-745
Number of pages11
JournalConstruction and Building Materials
Volume175
DOIs
StatePublished - Jun 30 2018

Keywords

  • Crumb-rubber concrete
  • Fracture toughness
  • Friction
  • Hardness
  • Scratch tests

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science

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