FraMCoS 3 1998 Gifu, Japan

Splitting Cracks in Reinforced Concrete Elements under Tensile Loads

Relative slip between ribbed steel bars and concrete produces radial cracks in reinforced concrete elements subjected to tensile forces. Bond stress is directly related to this cracking through a complex mechanism involving loss of confinement of the bar. Ribbed bar…

First page of: Splitting Cracks in Reinforced Concrete Elements under Tensile Loads
Year 1998
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Abstract

Relative slip between ribbed steel bars and concrete produces radial cracks in reinforced concrete elements subjected to tensile forces. Bond stress is directly related to this cracking through a complex mechanism involving loss of confinement of the bar. Ribbed bar geometry, concrete fracture properties and concrete cover are some of the governing parameters which control the bond capacity. However, a model describing accurately the complex mechanisms involved is still lacking. This paper presents the results of an experimental research to study cracking in prismatic concrete specimens with an embedded ribbed steel bar subjected to tension. The tests were developed for two bar diameters and three concrete covers. The work was carried out in response to the invitation of the "Round Robin Analysis and Tests on Bond" of RILEM TC 147-FMB (1995).