Effect of Specimen Size and Shape on Strength of Concrete

Testing the mechanical properties (especially compressive strength and tensile strength) of concrete is one of the most crucial stages of construction works. To control the quality of concrete, there are various moulds that are used for casting concrete samples during concreting works according to different standards at different countries. On the other hand, it is known that different shapes and sizes of concrete samples can cause variations in results of compressive strength or splitting tensile strength. This research concentrated on the effect of specimen sizes and shapes on compressive and splitting tensile strength of concrete, cured at different conditions and tested at both early and late ages. At the end of experimental study, hardened density, non-destructive tests (i.e. rebound hammer and PUNDIT), compressiv