A state-of-the-art review on shear-friction

Santos, Pedro; Júlio, Eduardo

doi:10.1016/j.engstruct.2012.06.036

Cited by 152 publications

(57 citation statements)

References 16 publications

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“…Santos and Julio [14] suggested that the friction and cohesion coefficients in Eq. (2) should be represented by the roughness parameter, R vm in the shear friction design expression given as:…”

Section: Existing Work On Interfacial Behaviormentioning

confidence: 99%

Friction and cohesion coefficients of composite concrete-to-concrete bond

Mohamad

Ibrahim

Abdullah

et al. 2015

Cement and Concrete Composites

132

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Section: Existing Work On Interfacial Behaviormentioning

confidence: 99%

Friction and cohesion coefficients of composite concrete-to-concrete bond

Mohamad

Ibrahim

Abdullah

et al. 2015

Cement and Concrete Composites

132

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“…between the layers and the resistance of reinforcement crossing the interface 2,3 . The shear-friction theory originates from the study of Birkeland and Birkeland 4 , who assumed that the tensile stresses at the interface are solely resisted by the transverse reinforcement.…”

Section: Accepted Articlementioning

confidence: 99%

Flexural strengthening and repair of RC slabs by adding a new RC layer

Aykaç

Kalkan

Tankut

2016

Structural Concrete

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The present paper summarizes the findings of an experimental program dedicated to investigate a strengthening/repair technique, the introduction of a new RC layer to the existing slab. Six RC slabs, composed of twelve cantilever and six interior spans, were tested under monotonic transverse loading. The behavior of statically determinate cantilever spans and indeterminate interior spans was examined by comparing the test results of these specimens to the results of reference slabs, in which the existing and additional layers were cast monolithically. The influence of recovering the permanent slab deformations before repair and the spacing of the shear connectors between the existing and additional layers were investigated. The tests indicated that recovering the permanent deformations of a slab before repair reduces its rigidity substantially while having little influence on the ultimate load. Furthermore, debonding of the reinforcement was observed to decrease the load capacities and rigidities of the slabs considerably.

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“…Such structures are often called hybrid structures, and the main challenge with this type of structure is the interaction and bond between the materials (Aydin and Saribiyik 2013;Canning et al 1999;Santos and Júlio 2012). A much used application of hybrid structures is the combination of concrete construction methods, e.g.…”

Section: Introductionmentioning

confidence: 99%

Structural behaviour of layered beams with fibre-reinforced LWAC and normal density concrete

Nes

Øverli

2015

Mater Struct

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The hybrid concrete structures investigated in this project were beams composed of two layers of different types of concrete. Normal density concrete (NC) was used in the top layer combined with a layer of fibre-reinforced lightweight concrete (FRLWC). Hence, the beams had a low weight and the NC layer fulfilled the requirements for ductility in compression. The material properties of the FRLWC were investigated through small-scale tests, the uniaxial tension test, the 3-point bending test and a compressive test on concrete cylinders/cubes. The small-scale tests constituted the basis for obtaining design parameters used in the design of the larger hybrid beams. These beams had 0.5% and 1.0% of steel fibres, and were subjected to a 4-point bending test in order to study the performance in terms of both shear and bending actions. Fibre counting was carried out in order to relate the performance to the number of fibres crossing the critical section, which turned out to have a considerable influence on the performance of the FRLWC. In general, the types of failure were as expected.This study shows that the concept of combining NC and FRLWC in one crosssection shows promising results, and no problem with the bond between the layers of concrete was registered. Steel fibre reinforcement of the lightweight concrete increased the ductility in tension, so the amount of conventional shear reinforcement could be reduced. The concept provides a low self-weight of the structure, practical solutions in the construction phase and good premises for more efficient building.2

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A state-of-the-art review on shear-friction

Cited by 152 publications

References 16 publications

Friction and cohesion coefficients of composite concrete-to-concrete bond

Friction and cohesion coefficients of composite concrete-to-concrete bond

Flexural strengthening and repair of RC slabs by adding a new RC layer

Structural behaviour of layered beams with fibre-reinforced LWAC and normal density concrete

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