Abstract
A flexural cyclic loading machine has been developed as part of an investigation into the fatigue characteristics of fibrous concretes. The performance of the machine has been verified during an initial programme of work in which the effect of the rate of loading on the ultimate flexural strength of a plain and a steel fibre concrete has been determined. A description of the machine, details of the verification of its performance, and the procedures and results of the initial investigation are provided. The increase in flexural strength of the fibrous concrete over the range of stressing rates from0.017 to170 MN/m2/s was markedly less than that of the plain concrete, but further testing is desirable in view of the scatter of results encountered.
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