Publication

Validation of bond models for the crack width estimation based on detailed measurements

Aurelio Muttoni, Enrique Corres Sojo
2022
Conference Papers

Abstract

Crack formation and development in reinforced concrete structures is a complex mechanism affected by a large number of factors. Typically, the estimation of the crack width as a function of the reinforce-ment stress state is based on simplified assumptions concerning the rebar-to-concrete interaction. In this paper, the results of concrete ties and pull-out tests instrumented with Fibre-Optic Measurements and Digital Image Correlation are used to review current code formulations. The results indicate that the assumption of average bond strength could be improved and adjusted based on visible deteriorations on the concrete surface. More refined models could be beneficial to establish a better correlation between crack width and stress in the reinforcement.

Official source

https://infoscience.epfl.ch/entities/publication/0f3ebca7-addd-42a2-871d-1a404a65cdf6

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Aurelio Muttoni, Enrique Corres Sojo
2022
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/0f3ebca7-addd-42a2-871d-1a404a65cdf6

About this result

Related concepts (20)

Reinforced concrete

Reinforced concrete, also called ferroconcrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel bars (rebar) and is usually embedded passively in the concrete before the concrete sets. However, post-tensioning is also employed as a technique to reinforce the concrete. In terms of volume used annually, it is one of the most common engineering materials.

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