Comprehensive test data are presented on the mechanical properties of carbon fibre reinforced cement composites made with short random fibres of low elastic modulus obtained from pitch. Four types of cement matrices were used, and the effect of fibre volume on flow characteristics, unit weight, tensile and compressive stress strain behaviour and flexural behaviour was studied. The results showed that the properties were very much influenced by both the fibre volume and the properties of the matrix. The ultimate flexural strength was predicted theoretically and compared to experimental data.
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Akihama et al. (1986) studied this question.