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  2. Pre-stressed concrete

Pre-stressed concrete

A type of reinforced concrete in which all or some of the ordinary steel reinforcement is replaced by high-tensile steel bars or wires which are tensioned by ‘pre-tensioning’ or ‘post-tensioning’. The number and positioning of wires or tendons can be arranged to eliminate all tension in the concrete, thereby preventing cracking and so rendering the concrete water-tight and gas-tight as well as increasing in durability. Pre-stressed concrete structures can achieve greater spans and carry higher loading.

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