Experimental study of the effect of filler on the ductility of filler-bitumen mastics

L. Pereira, A. C. Freire, M. Sá da Costa, V. Antunes, Luís Quaresma, R. Micaelo

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

This research investigated the effect of filler on the ductility of filler-bitumen mastics, as a surrogate of the cohesive behaviour and the tensile properties. Various fillers (industrial products, mineral fillers or waste materials) were mixed with one paving grade bitumen, in various filler-to-bitumen ratios, and tested under the force-ductility test. The force-elongation curve obtained is affected by the constituents, but the peak force and total deformation energy are a mainly a function of the normalized filler concentration value. Moreover, the effect of the filler type and concentration on the specimen's ductility is better perceived from the normalized post-peak deformation energy. Normalized filler concentration values close to 0.80 induce a clear reduction in ductility.

Original languageEnglish
Pages (from-to)1045-1053
Number of pages9
JournalConstruction and Building Materials
Volume189
DOIs
Publication statusPublished - 20 Nov 2018

Keywords

  • Bituminous mastic
  • Ductility
  • Filler
  • Suspension's rheological behaviour

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