Microstructural characterisation of dry mixed rubberised asphalt mixtures

Norhidayah Abdul Hassan, Gordon D. Airey, Nur Izzi Md Yusoff, Mohd Rosli Hainin, Ramadhansyah Putrajaya, Mohd Ezree Abdullah, Md Maniruzzaman A. Aziz

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

This study characterises the microstructural properties of Hot Rolled Asphalt (HRA60/20) modified with different percentages and sizes of crumb rubber using dry process method. A number of specimens from five different mixtures were scanned using X-ray Computed Tomography (CT) together with image analysis technique to evaluate the effects of rubber size and concentration on the voids formation and rubber distribution within the gyratory compacted specimens. A set of procedures for processing and extracting the voids and crumb rubber was established in thresholding the region of interest. Results showed that the increase in the rubber content and rubber sizes affect the rubber distribution and air voids properties within the compacted asphalt mixture. The rubber particles affect the effectiveness of compaction and tend to cause the large air voids to scatter randomly into smaller sizes during compaction. This finding is more pronounced in specimen with fine rubber, whereas for the control mixture, the air voids are more localised and large sized.

Original languageEnglish
Pages (from-to)173-183
Number of pages11
JournalConstruction and Building Materials
Volume82
DOIs
Publication statusPublished - 1 May 2015

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Asphalt mixtures
Rubber
asphalt
Compaction
Air
Asphalt
Image analysis
Tomography
X rays

Keywords

  • Crumb rubber
  • Dry process
  • Image analysis technique
  • Microstructural properties
  • X-ray Computed Tomography (CT)

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)

Cite this

Abdul Hassan, N., Airey, G. D., Md Yusoff, N. I., Hainin, M. R., Putrajaya, R., Abdullah, M. E., & A. Aziz, M. M. (2015). Microstructural characterisation of dry mixed rubberised asphalt mixtures. Construction and Building Materials, 82, 173-183. https://doi.org/10.1016/j.conbuildmat.2015.02.015

Microstructural characterisation of dry mixed rubberised asphalt mixtures. / Abdul Hassan, Norhidayah; Airey, Gordon D.; Md Yusoff, Nur Izzi; Hainin, Mohd Rosli; Putrajaya, Ramadhansyah; Abdullah, Mohd Ezree; A. Aziz, Md Maniruzzaman.

In: Construction and Building Materials, Vol. 82, 01.05.2015, p. 173-183.

Research output: Contribution to journalArticle

Abdul Hassan, N, Airey, GD, Md Yusoff, NI, Hainin, MR, Putrajaya, R, Abdullah, ME & A. Aziz, MM 2015, 'Microstructural characterisation of dry mixed rubberised asphalt mixtures', Construction and Building Materials, vol. 82, pp. 173-183. https://doi.org/10.1016/j.conbuildmat.2015.02.015
Abdul Hassan, Norhidayah ; Airey, Gordon D. ; Md Yusoff, Nur Izzi ; Hainin, Mohd Rosli ; Putrajaya, Ramadhansyah ; Abdullah, Mohd Ezree ; A. Aziz, Md Maniruzzaman. / Microstructural characterisation of dry mixed rubberised asphalt mixtures. In: Construction and Building Materials. 2015 ; Vol. 82. pp. 173-183.
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