Evaluating the co-relationship between concrete flexural tensile strength and compressive strength

The relationship of flexural tensile strength and compressive strength for different range of concrete strength proposed by various authors and country standards indicate diverse and wide variations in recommendations to predict the concrete flexural tensile strength. This paper presents the experimental study to predict flexural tensile strength and compressive strength improved empirical relations using statistical procedures for wide range of concrete strength (35 to 100 MPa) and for different member depth of concrete (80 to 250 mm). It is concluded from study that the flexural tensile strength and compressive strength proportionality equations should be derived in power model for more precision, and the size of the member should also be included in the proportionality equations in addition to compressive strength.