Effectiveness of Reinforcing Bent Non-Uniform Pre-Stressed Glulam Beams with Basalt Fibre Reinforced Polymers Rods

Wdowiak, Agnieszka; Brol, Janusz

doi:10.3390/ma12193141

Cited by 21 publications

(13 citation statements)

References 27 publications

(38 reference statements)

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“…Recently, A great deal of investigations has been studied wooden reinforced with the FRP Among the others, Basterra et al (2012), Nowak et al (2013), Osmannezhad et al (2014), McConnell (2015, Raftery and Kelly (2015), Schober et al (2015), Brol and Wdowiak (2017), Brol et al (2018), Zhou et al 2018, Wdowiak andBrol (2019), Gaff et al (2019), Wang et al (2019), Zhou et al (2019), Zhou et al (2020), Wdowiak-Postulak (2021) have studied the FRP reinforcement under several test configurations such as different density, layer number, and loaded. On the bending moment resistance of T-type, two-pin dowel joints with reinforced basalt fiber woven fabric are not applied and it is considered that there is a deficiency in the literature.…”

Section: Introductionmentioning

confidence: 99%

Bending moment resistance of t-type joints reinforced with basalt and glass woven fabric materials

Karaman

2021

Maderas, Cienc. tecnol.

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This study investigated the bending moment resistance of T-type, two-pin dowel joints connected with Scotch pine dowel (Pinus slyvestris), beech dowel (Fagus orientalis), chestnut dowel (Castanea sativa) and oak dowel (Quercus petraea) and reinforced with basalt and glass woven fabric. The tests was carried out to determine the bending moment resistance of dowel joints. As a result of bending test, it was determined that one layer and two surfaces the reinforce with fiber woven fabrics increases the mechanical performance of furniture fasteners according to obtained data from tests conducted on the T-type, two pin dowel joints. The test samples prepared from the oak wooden give the higher moment values than the beech wooden. This study showed that the joining with the oak dowel was 13 % higher than the beech dowel, 32 % the chestnut dowel, and 43 % higher than the Scotch pine dowel (for the bending moment resistance), respectively. According to the bending moment resistance of the samples reinforced by fiber woven fabrics. The highest bending moment resistance value was obtained in the test specimens of reinforced with the basalt woven fabric, the lowest bending moment resistance value was obtained in the test specimens not reinforced (Control). In general, it was determined that the wood species by 3 %, wooden dowel species by 43 %, and fiber woven fabric types by 72 % have been effects on the results of the bending tests.

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Section: Introductionmentioning

confidence: 99%

Bending moment resistance of t-type joints reinforced with basalt and glass woven fabric materials

Karaman

2021

Maderas, Cienc. tecnol.

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“…Previous attempts to apply internal reinforcement to wood structures included the introduction of reinforcement inserts into the tensile zone or into the tensile and compression zone-a more effective method [3,4]. Both metallic, as well as fiber-reinforced polymer, reinforcement in the form of rods [5][6][7][8], laminates or mats were used [9][10][11]. The use of carbon fiber-reinforced polymer (CFRP) laminates bonded inside the cross-section perimeter has been presented [12] as an implementable solution for strengthening and reproducing the carrying capacity of solid timber beams in historical structures.…”

Section: Introductionmentioning

confidence: 99%

Strengthening of Bent LVL Beams with Near-Surface Mounted (NSM) FRP Reinforcement

2020

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The topic of the article is the analysis of the static work of unreinforced and reinforced with composite material timber beams under bending tests. The results of the experimental tests and a brief outline of the characteristics of the internal reinforcement of wood structures are presented. Experimental tests were performed on full-scale beams made of laminated veneer lumber (LVL) with nominal dimensions of 45 × 200 × 3400 mm. Two strips of carbon fiber-reinforced polymer (CFRP) reinforcement were glued into rectangular grooves in the component bottom with two-component epoxy resin (0.62% reinforcement percentage). The reinforcement mainly affected the enhancement of the maximum bending moment values evaluated at the points of application as having concentrated forces of 32% and 24% in comparison to the unreinforced elements. Increases of 11% and 7% in the global modulus of elasticity in the bending and stiffness coefficients were achieved, respectively. The failure of the reference beams was caused by exceeding the tensile strength of the LVL. The reinforced elements were characterized by a greater variation in failure mode, resulting from tension, compression or lateral torsional buckling. The strain profile reading showed a higher utilization of the compression characteristic of veneer in specimens reinforced with carbon laminates.

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“…Bars should be inserted into the cut-out grooves and bonded with a resin (e.g., epoxy resins). Many researchers [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ] conducted tests and theoretical analyses of solid and glued timber. Raftery and Kelly [ 25 ], for example, reinforced poor- quality glued timber by means of installing basalt FRP bars.…”

Section: Introductionmentioning

confidence: 99%

Basalt Fibre Reinforcement of Bent Heterogeneous Glued Laminated Beams

Wdowiak-Postulak

2020

Materials

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The purpose of this paper is to demonstrate the properties of glued laminated beams made in diverse configurations of timber quality classes, reinforced using a new technique that is cheaper and easy to apply. The aim of the experimental investigations was to enhance reinforcement effectiveness and rigidity of glued laminated beams. The tests consisted of four-point bending of large-scale specimens reinforced with basalt fibres (BFRP). The tests were meant to obtain images of failure, the load–displacement relation and load carrying capacity of basalt fibres depending on the reinforcement ratio. The tests, which concerned low and average quality timber beams, were conducted in a few stages. The aim of the study was to popularize and increase the use of low-quality timber harvested from reafforested areas for structural applications. In the study, theoretical and numerical analysis was carried out for reinforced and unreinforced elements in various configurations of wood quality classes. The aim was to compare the results with the findings of experimental tests. Based on the tests, it was found that the load carrying capacity of beams reinforced with basalt fibre was higher by, respectively, 13% and 20% than that of reference beams, while their rigidity improved by, respectively, 9.99% and 17.13%. The experimental tests confirmed that basalt fibres are an effective structural reinforcement of structural timber with reduced mechanical properties.

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Effectiveness of Reinforcing Bent Non-Uniform Pre-Stressed Glulam Beams with Basalt Fibre Reinforced Polymers Rods

Cited by 21 publications

References 27 publications

Bending moment resistance of t-type joints reinforced with basalt and glass woven fabric materials

Bending moment resistance of t-type joints reinforced with basalt and glass woven fabric materials

Strengthening of Bent LVL Beams with Near-Surface Mounted (NSM) FRP Reinforcement

Basalt Fibre Reinforcement of Bent Heterogeneous Glued Laminated Beams

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