Rebars increase concrete's what property?

Rebars increase concrete's what property?

• A. Compressive strength
• B. Flexural strength
• C. Tensile strength
• D. Shear strength

Answer: (C)

Rebars boost concrete’s ability to resist tension. Concrete handles compression well but is weak in tension, so embedding steel bars—which have high tensile strength and ductility—lets the member carry tensile forces that develop under load, especially in bending. In a reinforced section, concrete takes the compression on the top while the steel resists the tension on the bottom, dramatically increasing the overall tensile capacity and preventing sudden failure. While this also enhances flexural behavior, the fundamental improvement comes from increasing tensile strength.

Rebars boost concrete’s ability to resist tension. Concrete handles compression well but is weak in tension, so embedding steel bars—which have high tensile strength and ductility—lets the member carry tensile forces that develop under load, especially in bending. In a reinforced section, concrete takes the compression on the top while the steel resists the tension on the bottom, dramatically increasing the overall tensile capacity and preventing sudden failure. While this also enhances flexural behavior, the fundamental improvement comes from increasing tensile strength.