Modulus of rupture is a measure of the bending or tensile strength of unreinforced concrete.

• A. False
• B. True
• C. Not defined
• D. Both

Answer: (B)

Modulus of rupture describes the flexural (bending) strength of concrete. It is obtained from a beam bending test and reflects the tensile capacity of concrete when it is loaded in bending. Concrete is strong in compression but weak in tension, so MOR serves as a practical measure of its tensile resistance in bending, especially for unreinforced concrete where there is no reinforcement to carry tensile stresses. This value is specific to bending and is not a measure of compressive strength. In practice, MOR is the standard way to express the tensile capacity of concrete in a bending scenario, making the statement true.