Matrix cracking and interface debonding in fiber-reinforced cement-matrix composites

Yixin Shao, Zongjin Li, Surendra P. Shah*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

53 Scopus citations


The processes of matrix cracking and interface debonding were studied using the high sensitivity Moire interferometry technique. The experiments were conducted with continuous steel fiber reinforced cementitious composites subjected to uniaxial tension. The initiation and propagation of cracking and debonding were observed during the tests with the specimens of different fiber-volume ratios. Based on the experiments, the fiber stress, the interface slip, the interface shear stress, and the matrix strain distribution were calculated. It was shown that interfacial frictional shear stresses were not constant either along the whole interface or at different loading levels. The strain localization was observed in the matrix where it was bonded to the fiber. The average contribution of the matrix was greater for the composites with the higher fiber-volume ratio.

Original languageEnglish (US)
Pages (from-to)55-66
Number of pages12
JournalAdvanced Cement Based Materials
Issue number2
StatePublished - Dec 1993


  • Cement-matrix composites
  • Interface debonding
  • Interface shear stress
  • Interfacial zone
  • Matrix contribution
  • Matrix cracking
  • Matrix strain localization
  • Moire interferometry

ASJC Scopus subject areas

  • Ceramics and Composites
  • Industrial and Manufacturing Engineering


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