Flexural analysis of laminated solid wood beams with different shear connections

Jelušič, Primož; Kravanja, Stojan

doi:10.1016/j.conbuildmat.2018.04.102

Cited by 21 publications

(8 citation statements)

References 17 publications

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“…The moisture content at different relative humidity levels was calculated according to Equation (1). Compressive strength at 10% deformation was determined on dry samples according to SIST EN 826 using a Zwick/Roell Z010 universal test machine [17]. Test specimens were squarely cut to dimensions of 100 × 100 mm 2 with a thickness of 100 mm.…”

Section: Moisture Content and Mechanical Testingmentioning

confidence: 99%

“…One possible explanation could be that the undamaged hydrophobic admixtures permitted a decrease in the sorption of water into the material. Compressive strength at 10% deformation was determined on dry samples according to SIST EN 826 using a Zwick/Roell Z010 universal test machine [17]. Test specimens were squarely cut to dimensions of 100 × 100 mm 2 with a thickness of 100 mm.…”

Section: Water Content and Mechanical Performancementioning

confidence: 99%

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The Influences of Moisture on the Mechanical, Morphological and Thermogravimetric Properties of Mineral Wool Made from Basalt Glass Fibers

et al. 2020

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Mineral wool made from basalt fibers is frequently used as an insulating material in construction systems. In this study, both unused mineral wool and wool obtained from the softened roofing area were comprehensively analyzed in a laboratory using different characterization techniques. Firstly, the initial water content and compressive strength at 10% deformation were determined. Secondly, microstructure and surface chemical composition were analyzed by scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDX). To study heterogeneities near the fiber surface and to examine cross-sectional composition, a scanning transmission electron microscope (STEM) was used. Finally, to verify possible reasons for resin degradation, thermogravimetric analysis and differential scanning colometry (TGA-DSC) were simultaneously carried out. The results show that natural aging under high humidity and thermal fluctuations greatly affected the surface morphology and chemical composition of the fibrous composite. Phenol-formaldehyde and other hydrophobic compounds that protect fibers against moisture and give compressive resistance were found to be degraded.

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Section: Moisture Content and Mechanical Testingmentioning

confidence: 99%

Section: Water Content and Mechanical Performancementioning

confidence: 99%

The Influences of Moisture on the Mechanical, Morphological and Thermogravimetric Properties of Mineral Wool Made from Basalt Glass Fibers

et al. 2020

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“…Most often, this adhesive is an epoxy resin. It is generally known that the quality of glued laminated beams, and glued and other wood materials produced, depends on the quality of the adhesive resin used [ 26 , 27 , 28 ]. However, the use of different adhesive agents can be technologically cumbersome.…”

Section: Introductionmentioning

confidence: 99%

GL Beams Reinforced with Plywood in the Outer Layer

et al. 2022

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Glulam beams are increasingly used in the construction industry because of their high strength and the possibility of using round timber with smaller cross-sections. The load-bearing capacity of beams is strongly related to the quality of the outer layers and, in the case of wood, especially the tension zones. For these reasons, this study decided to replace the outer lamella with tensile plywood. The produced beams were subjected to static bending strength and modulus of elasticity evaluation. It was shown that the best static bending strength values were obtained for beams containing plywood in the tension layer. However, the change in structure in the tension zone of beams made of glued laminated timber results not only in an increase in the load capacity of elements produced in this way but also in a decrease in the range/range of the obtained results of bending strength. This way of modifying the construction of glued laminated beams allows a more rational use of available pine timber.

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“…In this work, it is used as the key property for the determination of the best processing conditions. In addition, it is widely used to determine flexural strength of woods and agglomerates [ 33 ]. This property is good to determine the reliability of materials.…”

Section: Introductionmentioning

confidence: 99%

Reliability and Mechanical Properties of Materials Recycled from Multilayer Flexible Packages

2020

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Present work proposes a recycling form of multilayer food packages to avoid their incineration, landfill of wastes or re-using of their individual components. The manufacturing process of the material consists of binding several sheets by the non-simultaneous application of temperature and pressure, these being bound by the fusion of the polyethylene, without any other adhesives. The influence of elected variables (temperature, pressure, time and number of sheets) on the mechanical properties is determined. Bending tests in three points were carried out, with the purpose of obtaining flexural strength and flexural modulus. Finally, the reliability was determined through the method of Weibull using different failure estimators for the most appropriate materials (relative to flexural strength and porosity values). Light microscopy to obtain information about defectology before and after tests was used. The results obtained by this type of material are very similar to those presented by wood-based materials and present good reliability from the strength point of view.

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Flexural analysis of laminated solid wood beams with different shear connections

Cited by 21 publications

References 17 publications

The Influences of Moisture on the Mechanical, Morphological and Thermogravimetric Properties of Mineral Wool Made from Basalt Glass Fibers

The Influences of Moisture on the Mechanical, Morphological and Thermogravimetric Properties of Mineral Wool Made from Basalt Glass Fibers

GL Beams Reinforced with Plywood in the Outer Layer

Reliability and Mechanical Properties of Materials Recycled from Multilayer Flexible Packages

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