STRAIN OF CONCRETE AT PEAK COMPRESSIVE STRESS FOR A WIDE-RANGE OF COMPRESSIVE STRENGTHS

The increasing interest in the strain behaviour of concrete is not restricted to everyday mean compressive strengths but now extends to very high values. In this paper it is shown that the various proposals for assessing the value epsilon0 of the strain at the peak of the compressive strength of concrete appear sufficiently precise, at maximum, for a limited range of strengths. This had led us to estimate epsilon0 for a wide range of strengths, and the new formula in this paper seems to perform much better when applied to the experimental data obtained in the very wide range of strengths possible today.