The purpose of reinforcement in pre-stressed concrete is

Explanation:

• In pre-stressed concrete, the concrete is pre-compressed by applying a compressive force using tendons or cables.

• However, concrete is weak in tension, so reinforcement (steel tendons or wires) is provided to resist tensile stresses that occur when the structure is loaded.

• The reinforcement carries tensile forces and prevents cracking in the concrete.

• The initial compressive stress is imparted by the pre-stressing process itself (not the reinforcement alone).

• Bond stress develops between concrete and steel to transfer forces, but the primary purpose of reinforcement is to resist tension.

Additional Information

• Pre-stressed concrete combines concrete's strength in compression with steel's strength in tension.

• Reinforcement ensures durability and serviceability by controlling cracks.

• It allows longer spans and thinner sections compared to conventional reinforced concrete.