Fatigue behavior of sisal fiber reinforced cement composites

Flávio de Andrade Silva, Barzin Mobasher, Romildo Dias Toledo Filho

Research output: Contribution to journalArticle

39 Scopus citations

Abstract

The tensile fatigue behavior of long aligned sisal fiber reinforced cement composites was investigated. The fatigue behavior was examined in terms of the stress versus cycles and stress-strain hysteresis behavior of the composites. Composites were tested at stress levels ranging between 4 and 9.8MPa which represent approximately 30-80% of the monotonic ultimate tensile strength. The composites did not fail in fatigue below a maximum fatigue level of 6MPa up to 106 cycles. Monotonic tensile testing was performed for composites that survived 106 tests to determine the residual strength. Crack spacing was measured by image analysis technique. There was no observed loss in strength, but a decrease in Young's modulus and an increase in first crack strength was observed with increasing fatigue stress. Fluorescent optical microscopy was used to investigate the micro-crack formation in composites subject to fatigue loading.

Original languageEnglish (US)
Pages (from-to)5507-5513
Number of pages7
JournalMaterials Science and Engineering A
Volume527
Issue number21-22
DOIs
StatePublished - Aug 1 2010

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Keywords

  • Cement composites
  • Fatigue behavior
  • Microcracking
  • Sisal fibres
  • Stress-strain

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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