Experimental study of composite beams having a precast geopolymer concrete slab and deconstructable bolted shear connectors

Ataei, Abdolreza; Bradford, Mark A.; Liu, Xinpei

doi:10.1016/j.engstruct.2015.10.041

Cited by 142 publications

(42 citation statements)

References 6 publications

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“…Measurements indicate that none of the bolts exhibited slip larger that the initial clearance of 4 mm at the ultimate load level. Geopolymer concrete slabs, 150 mm thick and 1 m wide were used by Ataei et al [19] to accomplish the composite interaction with 7 m steel beam in bending experiments. A reference specimen consisted of in-situ casted slab connect to the steel beam by use of 56 M20 bolted shear connectors with embedded nut.…”

Section: B) C)mentioning

confidence: 99%

08.08: Prefabricated demountable concrete and FRP decks in composite structures

Pavlović

Veljković

2017

ce papers

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Welded shear studs are traditionally used to achieve composite actions between steel beams and concrete slabs. Relevance of composite structures for future applications in construction sector is increased by using demountable shear connectors which enables easy reuse of structures. The latest achievements of using demountable bolts embedded in prefabricated concrete slabs as shear connectors are presented in this paper. The focus of the investigation is on possible influence of execution tolerances on the level of composite action. The second issue addressed in the paper is use of Fibre Reinforced Polymer (FRP) composite deck instead of concrete slabs. FRP decks have high strength-to-weight ratio which reduce the total weight of the deck. Use of decks which have smaller self-weight facilitates the transport and execution process and reduces foundation costs especially in high-rise buildings. FRP composites are used in aerospace, automotive and shipbuilding industries for decades. They are considered as a maintenance free material. The main obstacle for wider applications of FRP material in construction is relatively a low stiffness of composites made of glass fibres and thermoset resins. Use of sandwich systems and hybrid decks, which combine FRP and the steel to increase the stiffness, are investigated in order to satisfy the design requirements. The third item of modern composite structures considered in this paper is use of high strength steel (HSS) grades to optimize the weight/strength ratio of structures. Results of a short parametric study using welded hybrid beams, combination of HSS and mild steel grades, is presented. This indicates significant reduction of weight and costs compared to the design using rolled cross section beams.

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Section: B) C)mentioning

confidence: 99%

08.08: Prefabricated demountable concrete and FRP decks in composite structures

Pavlović

Veljković

2017

ce papers

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“…The first tests on bolted shear connectors appear to date back to the late 60s [7], but surprisingly limited studies have been conducted on the behaviour and application of bolted shear connectors since then [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24], and most of these studies are related to bolted shear connectors permanently buried in concrete or groutfilled pockets [8][9][10][11][12] with less attention being paid to the potential application of PFBSCs for developing deconstructable steel-concrete composite floors [13][14][15][16][17][18][19][20][21][22][23][24]. In general, the available test results show that bolted shear connectors exhibit higher load capacity and significantly higher fatigue strength than those of stud shear connectors [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…The composite floors employing PFBSCs can be easily dismantled at the end of their service life, and this in turn can minimise the construction waste associated with the demolition of composite floors and can maximise the possibility for future reuse of the structural components [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. Furthermore, demountable composite floors with precast slabs and prefabricated steel girders can increase the speed, accuracy and quality of construction and reduce the time and environmental impact (viz.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of sustainable high strength steel flush end plate beam-to-column composite joints with deconstructable bolted shear connectors

Ataei

Bradford

Valipour

et al. 2016

Engineering Structures

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“…This is due to their high strength-toweight ratio and their good corrosion properties compared to the individually steel element or traditional concrete elements. Moreover, they have an excellent structural performance in terms of stiffness, their simplicity of construction and the significant economic advantages that benefit to this structural form [2].…”

Section: Introductionmentioning

confidence: 99%

Structural Behavior of Steel-Concrete Composite Beam using Bolted Shear Connectors: A Review

et al. 2018

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Conventional steel-concrete composite beams have been recognized to exhibit stronger structural characteristics, in terms of strength and stiffness, when compared to pure steel or reinforced concrete beams. However, currently most steel beam is fully attached to the concrete slab; this means that the shear connectors are welded through the steel decking on to the steel beam and cast into concrete slab to fulfill the necessary shear connection. Recently, the deconstruction and reuse of the components almost impossible. In order to achieve a sustainable structural system, precast concrete slabs are attached to a steel beam using bolted shear connectors in prefabricated holes have been introduced as an alternative to the conventional connectors in steel -concrete composite beam system. This paper reviews the structural behavior of composite beam system such as the strength, stiffness, slip behavior, failure mode and sustainability obtained by experiment and numerical studies in order to address the applicability and efficiency of the composite beams having precast concrete slabs and bolted shear connectors.

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Experimental study of composite beams having a precast geopolymer concrete slab and deconstructable bolted shear connectors

Cited by 142 publications

References 6 publications

08.08: Prefabricated demountable concrete and FRP decks in composite structures

08.08: Prefabricated demountable concrete and FRP decks in composite structures

Experimental study of sustainable high strength steel flush end plate beam-to-column composite joints with deconstructable bolted shear connectors

Structural Behavior of Steel-Concrete Composite Beam using Bolted Shear Connectors: A Review

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