Strength and Behavior of Reinforced Concrete Obtuse Corners under Opening Bending Moments

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Title: Strength and Behavior of Reinforced Concrete Obtuse Corners under Opening Bending Moments

Author(s): Hashim M. S. Abdul-Wahab and Waleed M. Ali

Publication: Structural Journal

Volume: 86

Issue: 6

Appears on pages(s): 679-685

Keywords: bending moments; corner joints; failure; flexural strength; reinforced concrete; reinforcing steels; stiffness; strength

Date: 11/1/1989

Abstract:
Results of an experimental investigation of the strength and behavior of reinforced concrete obtuse cornets under opening bending moments are presented. Five of the thirteen 145 deg cornet specimens tested had different reinforcement details; in the test of the specimens the thickness or the length of one of the adjoining members was varied. From the observed crack and failure patterns and the ultimate strengths, adding inclined barn to loops at the joints was found to improve flexural efficiency greatly. The effect of varying the stiffness of the adjoining members significantly improved the efficiency and resulted in a gradual change in the mode of failure.