Minimum Reinforcement in High‐Strength Concrete
Publication: Journal of Structural Engineering
Volume 116, Issue 2
Abstract
A dimensional analysis criterion is proposed to compute the minimum amount of reinforcement for high‐strength concrete members in flexure. Such an amount is assumed to be provided by the condition of simultaneous first cracking aand steel yielding. The fracture mechanics model utilized defines a brittleness number which is revealed to be a measure of the experimental brittleness or ductility of the test. is a function of steel‐yield strength concrete fracture toughness steel percentage and beam depth. The brittleness of the structural member increases by increasing the size and/or decreasing the steel content. On the other hand, a physically similar behavior is revealed in the cases where the brittleness number is the same. The experimental investigation carried out by the writers shows that the failure mechanism changes completely when the beam depth is varied, the steel percentage being the same. Only when the steel percentage is inversely proportional to the square root of the beam depth is the mechanical behavior reproduced.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 116 • Issue 2 • February 1990
Pages: 427 - 437
Copyright
Copyright © 1990 ASCE.
History
Published online: Feb 1, 1990
Published in print: Feb 1990
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