Laboratory tests of composite wood–concrete beams

Gutkowski, Richard M.; Brown, Kevin; Shigidi, Abdalla M. T.; Natterer, Julius

doi:10.1016/j.conbuildmat.2007.03.013

Cited by 128 publications

(49 citation statements)

References 4 publications

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“…This also results in economy of the construction cost. The competitive merit of this mixed construction is supported by several examples of successful pilot projects in Europe and in the USA (Gutkowski et al 2000(Gutkowski et al , 1999a(Gutkowski et al , b, 2001(Gutkowski et al , 2002(Gutkowski et al , 2004Gutkowski and Chen 1996;Brown 1998;Brown et al 1998;Chen et al 1992;Etournaud 1998;Etournaud et al 1998;Fragiacomo et al 2007;Fragiacomo and Ceccotti 2006;Fragiacomo 2006;Ceccotti et al 2006;Faggiano et al 2009), and more recently in Brazil (SáRibeiro et al 2006). In the recent decade the mixed construction has advanced to many constructions in Europe of multi-story apartment buildings, office buildings and some bridge decks (Grantham et al 2004;Clouston and Schreyer 2008).…”

Section: Introductionmentioning

confidence: 99%

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Composite Wood–Concrete Structural Floor System with Horizontal Connectors

SáRibeiro

2014

Int J Concr Struct Mater

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The concept of horizontal shear connection utilization on wood-concrete beams intends to be an alternative connection detail for composite wood-concrete decks. The volume of sawn-wood is over three times more expensive than concrete, in Brazil. In order to be competitive in the Brazilian market we need a composite deck with the least amount of wood and a simple and inexpensive connection detail. This research project uses medium to high density tropical hardwoods managed from the Brazilian Amazon region and construction steel rods. The beams studied are composed of a bottom layer of staggered wood boards and a top layer of concrete. The wood members are laterally nailed together to form a wide beam, and horizontal rebar connectors are installed before the concrete layer is applied on top. Two sets of wood-concrete layered beams with horizontal rebar connectors (6 and 8) were tested in third-point loading flexural bending. The initial results reveal medium composite efficiency for the beams tested. An improvement on the previously conceived connection detail (set with six connectors) for the composite wood-concrete structural floor system was achieved by the set with eight connectors. The new layout of the horizontal rebar connectors added higher composite efficiency for the beams tested. Further analysis with advanced rigorous numerical Finite Element Modeling is suggested to optimize the connection parameters. Composite wood-concrete decks can attend a large demand for pedestrian bridges, as well as residential and commercial slabs in the Brazilian Amazon.

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Section: Introductionmentioning

confidence: 99%

“…The tension zone cracks and half of its thickness is ineffective, only holding the steel reinforcement in place (Gutkowski et al 2000). The tension cracks can allow access to moisture, causing corrosion, separation, and other types of degeneration.…”

Section: Introductionmentioning

confidence: 99%

Composite Wood–Concrete Structural Floor System with Horizontal Connectors

SáRibeiro

2014

Int J Concr Struct Mater

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“…The structural response of such a beam system will be bound between that of a layered beam (with no inter connectivity) and a layered beam with fully rigid (no slip) interfaces between the individual layers. On this basis, and as suggested by Gutkowski et al [11], the efficiency of the welded-wood dowel connection can be evaluated as:…”

Section: Assessment Of Efficiencymentioning

confidence: 99%

Experimental study of timber-to-timber composite beam using welded-through wood dowels

O'Loinsigh

Oudjene

Ait-Aider

et al. 2012

Construction and Building Materials

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TitleExperimental study of timber-to-timber composite beam using welded-through wood dowels AbstractThis paper presents exploratory research related to novel full-scale multi-layered timber beams with composite action achieved with welded-through wood dowels. Different multi-layer beam designs, where the timber layers were interconnected with welded wood dowels providing interlayer shear resistance, were tested in bending with different dowel densities. The main originality of this study is the achievement of dowel welds through greater depths of sections than has previously proved possible. The practical difficulties encountered in constructing deeper multi-layer beams, and the successful solutions arrived at, are discussed. The significance of the research reported is the demonstrated ability to produce multilayered timber sections which are structurally efficient and do not require non timber based joining agents such as nails or adhesive.

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“…Gutkowski et al 4 conducted tests on timber-concrete composite beams to determine the degree of partial composite action between the materials, for a particular kind of connector. The test results showed that it is possible to achieve medium to high degrees of composite action in layered timber-concrete beams.…”

Section: Timber-concrete Composite Structuresmentioning

confidence: 99%

Glulam-concrete composites: experimental investigation into the connection system

Miotto

Dias

2011

Mat. Res.

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Timber-concrete composite structures work appropriately when a suitable connection system is included because the degree of interaction between the materials stiffs the structural system. Thereby, it is extremely important to improve the knowledge about their connection system. The purpose of this paper is to show the results obtained by experimental investigation into push-out shear tests of glulam-concrete specimens. The specimens were designed to simulate the behaviour of composite T beams and the connection system was constituted by steel hooks -got by the division of steel bars used in reinforced concrete members -and by perforated steel plates, both glued with epoxy adhesive. They were tested under shear forces with constant loading rate. Six specimens of each group were made, considering two different diameters for the hooks (8 and 10 mm) and 4.75 mm thick perforated steel plates. The stiffness reached by steel hooks confirms their suitability for the use in composite timber-concrete systems.

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Laboratory tests of composite wood–concrete beams

Cited by 128 publications

References 4 publications

Composite Wood–Concrete Structural Floor System with Horizontal Connectors

Composite Wood–Concrete Structural Floor System with Horizontal Connectors

Experimental study of timber-to-timber composite beam using welded-through wood dowels

Glulam-concrete composites: experimental investigation into the connection system

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