scholarly journals Flexural Behaviour of Timber Glass Composite Beams using Various Adhesives

2019 ◽  
Vol 8 (4S2) ◽  
pp. 134-139
Keyword(s):  
Energy Efficient ◽  
Composite Beams ◽  
Epoxy Adhesive ◽  
Clear Understanding ◽  
Glass Composite ◽  
Flexural Behaviour ◽  
Pass Through ◽  
Structural Connection ◽  
Acrylic Epoxy ◽  
Clear Idea

This paper mainly deals with providing a clear understanding of the bonding nature of various adhesives as a structural connection in timber glass composite beams and investigates the flexural behaviour of the same. This paper depicts the clear idea of the critical factors to be considered for the application of adhesives as a structural connection in timber glass composite beams. The timber glass composite beams will be a significant alternative for the conventional beams, which are currently used in the beams in temporary structures. Apart from being a significant replacement for the conventional beams, the glass web portion permits the light to pass through it. Thus, the artificial light energy required inside the structure will be reduced. This makes the composite beams to be energy efficient structural component in the temporary structures. In this research, the flexural behaviour of the composite beams made using various adhesives such as Acrylic, Epoxy and Silicone were studied. The result shows that epoxy adhesive connection behaves much better when compared with silicone and acrylic adhesives.

Flexural behaviour of glass fibre-reinforced polymer and ultra-high-strength fibre-reinforced concrete composite beams subjected to elevated temperature

2016 ◽  
Vol 20 (9) ◽  
pp. 1357-1374 ◽  
Author(s):  
Isuru Sanjaya Kumara Wijayawardane ◽  
Hiroshi Mutsuyoshi ◽  
Hai Nguyen ◽  
Allan Manalo
Keyword(s):  
Elevated Temperatures ◽  
High Strength ◽  
Composite Beams ◽  
Epoxy Adhesive ◽  
Fibre Reinforced Concrete ◽  
Flexural Behaviour ◽  
Reinforced Polymer ◽  
Glass Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Glass Fibre Reinforced

Composite beams consisting of pultruded glass fibre-reinforced polymer (GFRP) I-beams and ultra-high-strength fibre-reinforced concrete (UFC) slabs have been developed for use in short-span bridges. Fibre-reinforced polymer bolts (fibre-reinforced polymer threaded rods) and epoxy adhesive were used to connect the UFC slab to the GFRP I-beam. The authors conducted material tests and large-scale static bending tests at room and elevated temperatures (less than 90°C) to investigate the flexural behaviour of GFRP-UFC composite beams subjected to elevated temperature. The test results demonstrated that the mechanical properties of the GFRP I-beams, fibre-reinforced polymer bolts and epoxy adhesive were significantly deteriorated at elevated temperatures due to the glass transition of their polymer resin matrices. As a result, the stiffness and ultimate flexural capacity of the GFRP-UFC composite beams under elevated temperatures were significantly reduced. More than 85% of the flexural capacity of the GFRP-UFC composite beams was retained up to 60°C but that was decreased to 50% at 90°C. Fibre model analysis results confirmed that the stiffness of the GFRP-UFC composite beams is not significantly affected by actual hot environments, where there is a moderate temperature gradient across the beam cross-section.

In-plane shear compression behaviour of steel-glass composite beams with laminated glass webs

2017 ◽  
Vol 150 ◽  
pp. 892-904 ◽  
Author(s):  
Zhi-Yu Wang ◽  
Yalong Shi ◽  
Qing-Yuan Wang ◽  
Yaoyong Wu ◽  
Mingde He
Keyword(s):  
Composite Beams ◽  
Laminated Glass ◽  
Glass Composite ◽  
Plane Shear ◽  
Compression Behaviour

Flexural behaviour of steel plate-masonry composite beams

2012 ◽  
Vol 13 (2) ◽  
pp. 123-137 ◽  
Author(s):  
Deng-Hu Jing ◽  
Shuang-Yin Cao ◽  
Lei Shi
Keyword(s):  
Steel Plate ◽  
Composite Beams ◽  
Flexural Behaviour

Effect of Interleaved Electrospun Nanofiber on Flexural Properties of Fiber Glass Composites

2010 ◽  
Author(s):  
Sachin Shendokar ◽  
Ajit Kelkar ◽  
Ram Mohan ◽  
Ronnie Bolick
Keyword(s):  
Composite Beam ◽  
Electrospun Nanofibers ◽  
Composite Beams ◽  
Electrospinning Process ◽  
Temperature Cycle ◽  
Flexural Properties ◽  
Fiber Morphology ◽  
Glass Composite ◽  
Fiber Glass ◽  
Interface Layers

Electrospinning is regarded as one of the most efficient processes to generate one-dimensional nano structures. The electrospinning process is simple and provides consistent mass production of nanofibers. The scalability of the electrospinning process has an excellent potential to fulfill the high volume requirements of nanofibers in the infrastructure applications. The present work emphasizes the use of interleaved electrospun nanofibers in fiber glass composite beams. The Flexural behavior of a simply supported beam under a centrally concentrated loading is studied. Flexural properties of a fiber glass composite beam with interleaved electrospun nanofibers are compared with a fiber glass composite beam without electrospun nanofibers. The material configuration of the composite beams is: woven E-glass fabric prepregs with a low temperature molding resin. In addition, interleaved between the plies are TEOS (Tetra Ethyl Orthosilicate) electrospun nanofibers. The nanofibers were produced by developing optimized operating process parameters and a stabilized sintering temperature cycle to ensure consistency in the fiber morphology and pore structure. The successful integration of the electrospun nanofibers within the prepreg layers was obtained by pre-impregnation with a B-staged resin film and de-bulking to remove excessive resin prior to vacuum bagging. A series of mechanical Flexure tests were performed per the ASTM D7264 standard specification. Micrographs were obtained to study the progressive deformation and damage mechanics due to flexural loading in the specimens and clearly illustrate the differences in the failure mechanism with and without the electrospun interface layers.

scholarly journals Full-scale testing of adhesively bonded timber-concrete composite beams

2021 ◽  
Vol 54 (5) ◽  
Author(s):  
Jens Frohnmüller ◽  
Jens Fischer ◽  
Werner Seim
Keyword(s):  
Element Model ◽  
Composite Beams ◽  
Epoxy Adhesive ◽  
Full Scale ◽  
Small Scale ◽  
Adhesively Bonded ◽  
New Findings ◽  
Application Procedure ◽  
Polymer Mortar ◽  
Static And Cyclic Loading

AbstractThis paper presents new findings on adhesively bonded timber-concrete composites with prefabricated concrete parts. Hereby, timber and concrete are bonded solely with adhesive and no metallic connectors have been used. Because the achievement of a continuous bond proved to be a critical point in past studies, special attention is given to that issue. The application procedure of the adhesives is investigated in small-scale bond samples and the manufacturing process in full-scale composite beams with a span of 8 m and a comparatively new polymer mortar is used as adhesive as well as a common epoxy resin. Both adhesives proved to be suitable, although polymer mortars showed strong advantages in terms of applicability and bridging of gaps in comparison to the less viscous epoxy adhesive. The full-scale beams are tested under quasi-static and cyclic loading. The failure occurred more as a bending failure of the timber or compression failure of the concrete. A full bond could be achieved at all full-scale beams. Moreover, an analytical and a finite element model for the calculation of composite beams are presented and validated. It could be seen, that both deformation behavior and failure load are in good accordance with the test results.

Experimental and analytical assessments on flexural behaviour of CTLST composite beams

2019 ◽  
Vol 138 ◽  
pp. 15-31
Author(s):  
Zengde Zhang ◽  
Jingfeng Wang ◽  
Yaming Xiao ◽  
Wanqian Wang
Keyword(s):  
Composite Beams ◽  
Flexural Behaviour
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