SPLITTING TENSILE STRENGTH AND COMPRESSIVE STRENGTH RELATIONSHIP AT EARLY AGES

The paper reports on investigation of the relationship between concrete compressive strength and its splitting tensile strength, especially at early ages, as well as the examination of the applicability of some of the existing relations between these properties to concrete at early ages. Analyses of test results show that the compressive strength and the spliltting tensile strength are related, and an increase in one, in general is similarly reflected in an increase in the other. The commonly accepted 0.5 power relationship between the compressive strength and the spliltting tensile strength was found to be inaccurate at all ages. In fact the tensile strength was found to be proportional to the 0.79 power of the cylinder compressive strength. An alternate relationship between the tensile strength and the compressive strength is proposed. Tables of results and figures supporting these observations and conclusions are included.