INFLUENCE OF SPECIMEN SIZE ON COMPRESSIVE STRENGTH AND ELASTIC MODULUS OF HIGH-PERFORMANCE CONCRETE

Abstract

An experimental study of the influence of specimen size on compressive strength and static elastic modulus of high-performance concrete is reported. The elastic modulus was determined on the basis of surface strain of cylinders of two sizes made with the same volumetric mix proportions. The results show that the larger specimen has a lower compressive strength, and a higher elastic modulus. The paper presents relationships for calculating the compressive strength and elastic modulus of 150-mm cylinders from the values obtained on 100-mm cylinders.