Journal ArticleDOI
Models for flexural cracking in concrete: the state of the art
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In this article, an extensive literature review on crack widths and crack spacing is presented, summarising the development of flexural crack models and collecting the most relevant formulae for crack spacing and crack width.Abstract:
Crack formation presents a complex mechanical and geometrical question to be modelled. The available crack width formulations are often based on simplifications. A rigorous formulation of crack widths should be based on the integration of strain differences of reinforcement and concrete between cracks, due to the accumulated slips. In this paper an extensive literature review on crack widths and crack spacing is presented. The basic intention of the present paper is to summarise the development of flexural crack models and collect the most relevant formulae for crack spacing and crack width. It reports not only the possible improvement of design or research equations but also the appearance of new types of reinforcements with different characteristics from those of steel reinforcements. This state-of-the-art Report is a contribution to the work of fib TG 4.1 ‘Serviceability Models’.read more
Citations
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Journal ArticleDOI
The steel-concrete interface
Ueli Angst,Mette Rica Geiker,Mette Rica Geiker,Alexander Michel,Christoph Gehlen,Hong S. Wong,O. Burkan Isgor,Bernhard Elsener,Carolyn M. Hansson,Raoul François,Karla Hornbostel,Rob B. Polder,Maria Cruz Alonso,M. Sánchez,Maria João Correia,Maria Criado,Alberto A. Sagüés,Nick R. Buenfeld +17 more
TL;DR: In this article, a comprehensive list of possible local characteristics at the steel-concrete interface (SCI) and available information regarding their properties as well as their occurrence in engineering structures and in the laboratory is presented.
Journal ArticleDOI
Shrinkage influence on tension stiffening in concrete members
TL;DR: In this paper, a simple transformation formula has been proposed for eliminating shrinkage from tension stiffening relationships of tension and symmetrically reinforced bending members, and a more sophisticated procedure based on the earlier proposed inverse technique has been applied.
Journal ArticleDOI
Cracking behavior in reinforced concrete members with steel fibers: A comprehensive experimental study
TL;DR: In this paper, the authors investigated the ability of fibers in controlling cracks by discussing more than ninety tension tests on Reinforced Concrete (RC) prisms, carried out at the University of Brescia, having different sizes, reinforcement ratios, amount of fibers and concrete strengths.
Journal ArticleDOI
Experimental study on crack width and crack spacing for Glass-FRP reinforced concrete beams
TL;DR: In this article, a study on the cracking behavior of GFRP reinforced concrete (RC) elements is presented based on the results of an experimental program involving 15 beams, where two different types of gFRP and steel bars were used.
Journal ArticleDOI
Cracking of RC members revisited: influence of cover, ϕ/ρs, ef and stirrup spacing – an experimental and theoretical study
TL;DR: In this article, an experimental program aimed at studying the effect of cover, ratio between diameter and effective reinforcement ratio (ϕ/ρs, ef) and the influence of stirrup spacing on the cracking behavior of reinforced concrete elements is described.
References
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Journal ArticleDOI
Flexural behavior of concrete beams reinforced with glass fiber-reinforced polymer (GFRP) bars
Houssam Toutanji,Mohamed Saafi +1 more
TL;DR: In this paper, the effect of the FRP reinforcement ratios and elastic modulus of FRP were incorporated in the exponent of Branson's equation to predict deflections and crack width.
Journal ArticleDOI
Cracking analysis based on slip and bond stresses
TL;DR: In this article, a theory for crack formation in reinforced concrete elements based on an analysis of slip, bond stresses, and steel stresses is presented, and the problem is treated as an initial value problem both for initial crack formation when the cracks are independent, and for stabilized cracks when the zones of bond stresses reach each other.
Journal ArticleDOI
Fracture Energy Approach for Predicting Cracking of Reinforced Concrete Tensile Members
TL;DR: In this paper, a fracture energy approach based on nonlinear fracture mechanics is proposed to predict cracking of reinforced concrete members subjected to tension, where concrete is considered as a quasi-brittle material, and its cohesive nature in the fracture process was taken into account by a rising fracture resistance curve (R-curve).
Journal ArticleDOI
Verbundorientierte, kontinuierliche Theorie zur Ermittlung der Rißbreite. Wirklichkeitsnaher und einfacher Nachweis unter Berücksichtigung der Verbundgesetze und der Betonzugfestigkeit sowie unter Verknüpfung des Erstriß‐ und Endrißzustands (Teil 1).
TL;DR: In this paper, the authors discuss the role of the ZWEI stadion in the development of the RISS-BILDUNG project and its role in the ZweI Stadion.
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