Concrete compressive strength requirements can vary from 2,500 psi for residential concrete to 4,000 psi and higher in commercial structures. Commercial production of concrete … Specifications and investigation of apparent low strengths should take into account the higher variability of flexural strength results. Flexural strength is an indirect measure of the tensile strength of concrete, and can be determined from a third-point loading and centre-point loading test. It is a measure of the maximum stress on the tension face of an unreinforced concrete beam or slab at the point of failure in bending. A complete bond exists between the steel and the concrete; that is, the strain in the steel is the same as in the adjacent concrete. It tests the ability of unreinforced concrete beam or slab to withstand failure in bending. In addition, recommendations are given for the maximum tolerable flexural crack widths in concrete elements. Engineers know their target tensile (flexural) requirements, and express these in terms of compressive strength. Presently, the trend is stronger than ever-toward better use of concrete strength, use of higher-strength … Higher strengths up to and exceeding 10,000 psi are specified for certain applications. The results of flexural test on concrete expressed as a modulus of rupture which denotes as ( MR ) in MPa or psi. beams; and reinforced-concrete, two-way-action, structural floor slabs and plates. Flexural Strength of BeamsIncorporating Copper Slag as Partial Replacement of Fine Aggregate in Concrete Mrs. D. Brindha, Senior Lecturer, Dr. S. Nagan, Assitant Professor, Dept. Strain varies linearly through the depth of the member. Because the compressive strength of masonry is much larger than its corresponding tensile strength, the capacity of unreinforced masonry subjected to net flexural stresses is almost always controlled by the flexural tension values of Table 1. Flexural strength is an indirect measure of the tensile strength of concrete. This property of concrete is commonly considered in structural design. Compressive Strength The main measure of the structural quality of concrete is its compressive strength. Flexural Strength Of Prestressed Concrete Beams With Openings And Strengthened With CFRP Sheets Dr. Mustafa B. Dawood, Haider H. A. Al-Katib Abstract: This paper presents an experimental investigation of flexural strength of pretensioned prestressed concrete beams with openings and Flexural test evaluates the tensile strength of concrete indirectly. Standard deviation for concrete flexural strengths up to 800 psi (5.5 MPa) for projects with good control range from about 40 to 80 psi (0.3 to 0.6 MPa). of Civil Engineering, Thiagarajar College of Engineering, Madurai Copper slag is obtained as waste product from the sterlite industries, which produces copper in the form of cathode. 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