Time‐Dependent Shear Transfer in Cracked Concrete: Part I
Publication: Journal of Structural Engineering
Volume 117, Issue 10
Abstract
There is a lack of information about the behavior of cracked concrete subjected to in‐plane sustained shear loading. Tests are conducted on 46 push‐off specimens, each provided with a central crack, widths less than 0.10 mm. Cracks usually initiate along the relatively weak bond zones between the matrix material and the aggregate particles; this is even observed for the high‐strength concrete investigated. The shear plane is restrained by free steel rods or by 8‐mm diameter reinforcing bars that perpendicularly cross the crack plane. Mean concrete compressive strengths range from The adjusted constant stress levels are between 45% and 89% of the static shear strength. The movements parallel and normal to the crack plane are regularly recorded for at least 90 days. The displacement curves are calculated by nonlinear regression analysis. A constant stress at 50% of the static shear strength provides extrapolated crack widths less than 0.20 mm after 11 years. Additional tests focus on strain gauge measurements and on microscopic observations of the embedded axial steel bars.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 117 • Issue 10 • October 1991
Pages: 2900 - 2918
Copyright
Copyright © 1991 ASCE.
History
Published online: Oct 1, 1991
Published in print: Oct 1991
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