Abstract
The nature and properties of the resistance to fibre-matrix interfacial debonding in composites composed of ductile fibres in a brittle or elastic matrix can be determined using the single-fibre pull-out test. The results of such tests on cementitious matrix specimens indicate a non-linear relationship between the debonding and/or pull-out load and the embedded length of the fibre. Several of the theories developed to explain the debonding process and enable estimation of the parameters representing the debonding resistance through an analysis of pull-out test results are reviewed in this first of a two-part paper. The application of these theories to experimental data for steel fibre-cementitious matrix pull-out specimens is examined in the second part.
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