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Why we need a high strength concrete in prestressing
There is another aspect to why we need a high strength concrete in prestressing. Prestressed concrete is subjected to high values of compressive, tensile. shear. bond and bearing stresses. In the case of post-tensioned concrete. anchorages occupy a little cross-sectional area of concrete at the ends. Through these small areas, the prestressing force of a high magnitude is transferred to the concrete member. If the strength of concrete is not adequate, the anchorages may locally damage the end portion of concrete member and may punch inside concrete. If this happens, a major portion of tendon stresses may get lost.
What are the various methods of recording measurements? List five items each for various methods of recoding measurements?
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Joints in Concrete Pavements: Concrete pavements in India are of the jointed plain (unreinforced type). The following types of joints are needed in them : (a) Transverse C
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A retaining wall with a smooth vertical back, 4.5 m high, retains a dry cohesionless backfill level with the top of the wall. γ = 18.6 kN/m 3 and φ = 30°. The backfill carries a u
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