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Structural behaviour of high strength concrete beams

✍ Scribed by R.N. Swamy; K.L. Anand

Publisher: Elsevier Science
Year: 1974
Weight: 886 KB
Volume: 9
Category: Article
ISSN: 0007-3628
DOI: 10.1016/0007-3628(74)90010-3

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✦ Synopsis

Tests are reported on the flexural behaviour of high strength reinforced and prestressed concrete beams in terms of strength, cracking and &formation. The beams were made from concrete having a cube strength of 85=110 N/mm 2. The working stress in concrete varied between 27.7 N/mm2 and 34'5 N/mm 2, and that in steel between 230 N/mm 2 and 345 N/mm2, ,The results show that high strength concrete beams posses's adequate load factors, andshow ample warning and ductility prior to failure. The crack widths under design loads" are within acceptable limits, although steel workhlg stresses of 345 N/mm z may result in excessive long-term deflection. The strength and deflection can be sati.factorily predicted by existing methods.

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