Research Article
Apr 1980
Rough Cracks in Reinforced Concrete
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VIEW THE REPLYPublication: Journal of the Structural Division
Volume 106, Issue 4
Abstract
Equations derived are which relate the normal and shear stresses transmitted across a crack due to aggregate interlock to the opening and slip displacements. Average strains due to a system of parallel continuous cracks are superimposed on the strains due to the solid concrete between the cracks. The response of cracked concrete reinforced by a regular net of bars is then calculated using an incremental loading procedure. The stress-displacement relations exhibit a singularity at the initial state of zero displacements and the initial crack opening must begin at zero slip. Responses to various types of loading are calculated and the variation of the secant friction coefficient, crack dilatancy due to slip and the effect of crack opening are studied. The theory allows designing for a maximum crack width if the crack spacing is known. The previously proposed slip-free concept yields limit loads which are found to correspond to the states just before the start of a rapid increase in crack opening, while the classical frictional approach yields limit loads that are achieved only after very wide cracks develop.
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Published In
Journal of the Structural Division
Volume 106 • Issue 4 • April 1980
Pages: 819 - 842
Copyright
© 1980 American Society of Civil Engineers.
History
Published in print: Apr 1980
Published online: Feb 1, 2021
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Authors
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Zdeněk P. Bažant, F.ASCE
Prof. of Civ. Engrg., Northwestern Univ., Evanston, Ill.
Pietro Gambarova, M.ASCE
Postdoctoral Research Assoc., Northwestern Univ., Evanston, Ill., Assoc. Prof. on leave from Politecnico di Milano
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.