Abstract
For evaluating the performance of concrete construction such as foundation piles, a knowledge of the dynamic properties of concrete is also required. Some results of a study of concrete under dynamic impact loading are given in this paper. ø 100×200 mm cylindrical specimens were cast from plain and polymer cement concrete; some of the specimens were reinforced by polypropylene fibers also. The experimental details of the Hopkinson split-bar method used are described. The dynamic strength of concrete obtained was 40–45 % higher than the static strength. Compared to normal concrete, polymer cement concrete showed 30–35 % higher dynamic strength, and significantly higher energy transmission capacity.
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