Cracking mechanisms in durable sisal fiber reinforced cement composites

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

Research output: Contribution to journalArticle

127 Scopus citations

Abstract

Fiber reinforced cement composite laminates with long sisal fibers were manufactured using a cast hand lay up technique. A matrix with partial cement replacement by metakaolin and calcined waste crushed clay brick was used in order to improve the durability aspects. Mechanical response was measured under tension and bending tests while crack formation was investigated using a high resolution image capturing procedure. Crack spacing was measured using image analysis and correlated with the applied strain under both the tensile and bending response. Various stages of loading corresponding to initiation, propagation, distribution, opening, and localization of a crack system in the specimen are discussed. The effect of flexural cracking on the location of neutral axis during the bending tests was measured using strain-gages.

Original languageEnglish (US)
Pages (from-to)721-730
Number of pages10
JournalCement and Concrete Composites
Volume31
Issue number10
DOIs
StatePublished - Nov 1 2009

Keywords

  • Cement composites
  • Crack formation
  • Image analysis
  • Natural fiber

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

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