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Unformatted text preview: 5. Steel reinforcing bars are placed in concrete to give the concrete strength in tension. 6. Reinforcing is when steel bars are placed in the concrete while it is wet and allowed to dry without touching them after. Prestressing is done with cables laid in the concrete and the stretched tight once the concrete dries. They are both useful and make the concrete stronger. 7. Pretensioning is used is used in precast concrete. This is used to squeeze the concrete to its full strength. Posttensioning is used mainly on the job site and is generally done on foundations and other site placed concrete....
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- Spring '08