Cost Factor Analysis for Timber–Concrete Composite with a Lightweight Plywood Rib Floor Panel

Buka-Vaivade, Karina; Serdjuks, Dmitrijs; Pakrastiņš, Leonīds

doi:10.3390/buildings12060761

Cited by 10 publications

(3 citation statements)

References 24 publications

(19 reference statements)

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“…The proposed production technology of the rigid connection between timber and concrete layers is called the stone chips method. The stone chips method involves glueing granite chips to the timber layer with 1-2 mm thick epoxy glue layer, and after the glue has dried, a fresh fine-grained concrete layer is placed [22]. Thus, the risks of creating significant defects in the rigid timber-concrete connection are significantly reduced since the influence of individual stone chips, which may form a low-quality glued connection with the timber layer, on the total area of the connection is small.…”

Section: Methodsmentioning

confidence: 99%

Experimental analysis of timber-concrete composite behaviour with synthetic fibres

Buka-Vaivade

Serdjuks

Zvirina

et al. 2023

J. Phys.: Conf. Ser.

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With the growing importance of the principles of sustainable construction, the use of load-bearing timber-concrete composite structures is becoming increasingly popular. Timber-concrete composite offers wider possibilities for the use of timber in construction, especially for large-span structures. The most significant benefit from combining these materials can be obtained by providing a rigid connection between the timber and concrete layers, which can be obtained by the adhesive timber-to-concrete connection produced by the proposed stone chips method. A sustainable solution involves the abandonment of steel longitudinal reinforcement. The use of such a solution in practice is often associated with fears of a fragile collapse. Therefore, the issue of how to increase the safety factor of the proposed material is topical now. The experimental investigation is made to determine the effect of synthetic fibre use on timber-concrete composite behaviour by testing a series of timber-concrete composite specimens with and without fibres in the concrete layer. The obtained results show that adding 0.5 % of synthetic macro fibres allows to abandon the use of longitudinal steel reinforcement and prevents the formation of large cracks in concrete and the disintegration of the concrete layer in case of collapse.

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Section: Methodsmentioning

confidence: 99%

Experimental analysis of timber-concrete composite behaviour with synthetic fibres

Buka-Vaivade

Serdjuks

Zvirina

et al. 2023

J. Phys.: Conf. Ser.

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“…TCC structures contribute to creating rigid or semi-rigid joints, with connectors playing a crucial role in transferring shear between concrete slabs and timber beams [21,22]. Timber-concrete composites are instrumental in constructing structures that are challenging or impossible with timber alone [23,24]. A recent paper presents an analysis of the use of timber-concrete composite materials and monolithic slabs in residential buildings [25].…”

Section: Introductionmentioning

confidence: 99%

Verification of a Simplified Design Method for Timber–Concrete Composite Structures with Metal Web Timber Joists

Rogainis,

Serdjuks,

Buka-Vaivade

et al. 2024

Applied Sciences

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This study presents a comprehensive analysis of a simplified design methodology for timber–concrete composite roof and floor structures employing metal web beams, also known as posi-joisted beams, easi-joist, or open web joists, validated through both laboratory experiments and finite element (FE) method analyses. The proposed method integrates the transformed section method and the γ-method, as outlined in Annex B of EN1995-1-1 for mechanically jointed beams. The investigation focuses on roof and floor structures featuring posi-joisted beams, oriented strand board (OSB) sheets connected by screws, and a layer of concrete bonded to the OSB sheets using epoxy glue and granite chips. Two groups, each consisting of four specimens, were prepared for the laboratory experiments. Each specimen comprised two posi-joisted beams, 1390 mm long, connected by OSB/3 boards measuring 400 mm in width and 18 mm in thickness. The beams had a cross-sectional depth of 253 mm, corresponding to beams of grade PS10, with top and bottom chords made from solid timber (95 mm × 65 mm). Bracing members with cross-sections of 100 mm × 45 mm were used to join the bottom chords of the beams. A layer of self-levelling mass SakretBAM, 50 mm thick, was bonded to the OSB/3 boards using SicaDur 31 epoxy glue and granite chips (16–32 mm). The specimens underwent three-point bending tests under static loads, and FE modelling, conducted using Ansys R2 2022 software, was employed for both experimental groups. A comparative analysis of results obtained from the simplified design method, FE simulations, and experimental data revealed that the simplified method accurately predicted maximum vertical displacements of the roof fragment, including posi-joisted beams, with precision up to 11.6% and 23.10% in the presence and absence of a concrete layer, respectively. The deviation between normal stresses in the chords of the beams obtained through the simplified method and FE modelling was found to be 7.69%. These findings demonstrate the effectiveness and reliability of the proposed design methodology for timber–concrete composite roofs with posi-joisted beams.

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“…Composite floors might possess considerable advantages over traditional ones, including enhanced bending stiffness and dynamic response [2][3][4]. Often, a Cross-laminated-timber panel is added to existing joists and planking to retrofit existing floors.…”

Section: Introductionmentioning

confidence: 99%

Timber-to-timber composite floors connection optimization for vibration and deflection reduction

De Santis,

Pancella,

Pasca

et al. 2023

Vib. proced.

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Timber floors are prone to vibration due to the reduced modulus of elasticity of the material. Composite floors represent the most convenient solution to achieve acceptable performances and at the same time to save material and cost. In determining the natural frequency of a composite floor, the stiffness of the connection between the joined structural member is crucial. Inclined screws connections are characterized by the highest slip modulus among the mechanical fastener connections. However, the determination of the optimal inclination angle of the screws for vibration and deflection reduction remains an unexplored issue. The optimization problem is faced by means of an analytical model of beam on foundation.

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Cost Factor Analysis for Timber–Concrete Composite with a Lightweight Plywood Rib Floor Panel

Cited by 10 publications

References 24 publications

Experimental analysis of timber-concrete composite behaviour with synthetic fibres

Experimental analysis of timber-concrete composite behaviour with synthetic fibres

Verification of a Simplified Design Method for Timber–Concrete Composite Structures with Metal Web Timber Joists

Timber-to-timber composite floors connection optimization for vibration and deflection reduction

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