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A platform for research: civil engineering, architecture and urbanism
Experimental Testing of the Shear Strength of CLT-Concrete Composite Sections Utilizing Adhesive for Shear Connections
Timber-Concrete Composite (TCC) floor systems are increasingly being used in tall mass timber buildings worldwide. In such floor composite systems, the advantageous mechanical properties of both materials (timber and concrete) are efficiently utilized. The shear connections in TCC systems can be achieved using either discrete or continuous shear connectors that are located where the maximum shear forces are expected. The primary technique of shear connections in TCC systems is a wide variety of metal connectors, grooved connections, and adhesive connections. Usually, TCC systems with adhesive connections can be produced in two ways: cured concrete slabs can be glued to mass timber panels and then shipped to construction sites; or more advantageously a wet-on-wet process can be used. In the study presented in this paper, the shear characteristics of CLT-Concrete composite sections that utilized adhesive for shear connections have been experimentally investigated. The wet-on-wet process using a commercially available industrial adhesive was applied to fabricate four identical composite sections, each with 600 × 1000 mm shear interface between the CLT panel and concrete layer. Test specimens were experimentally examined under direct shear forces until failure. Experimental results show that all test specimens failed due to crushing of the loaded edge of the CLT panel as there was almost no slip at the interface between the CLT panel and concrete layer occurred in any of the four specimens. Outcomes of this experimental study confirmed the assumption of the rigid connection between the CLT panel and concrete layer in such TCC glued sections as all four specimens were able to attain more than 530 kN load without any shear interface failure observed.
Experimental Testing of the Shear Strength of CLT-Concrete Composite Sections Utilizing Adhesive for Shear Connections
Timber-Concrete Composite (TCC) floor systems are increasingly being used in tall mass timber buildings worldwide. In such floor composite systems, the advantageous mechanical properties of both materials (timber and concrete) are efficiently utilized. The shear connections in TCC systems can be achieved using either discrete or continuous shear connectors that are located where the maximum shear forces are expected. The primary technique of shear connections in TCC systems is a wide variety of metal connectors, grooved connections, and adhesive connections. Usually, TCC systems with adhesive connections can be produced in two ways: cured concrete slabs can be glued to mass timber panels and then shipped to construction sites; or more advantageously a wet-on-wet process can be used. In the study presented in this paper, the shear characteristics of CLT-Concrete composite sections that utilized adhesive for shear connections have been experimentally investigated. The wet-on-wet process using a commercially available industrial adhesive was applied to fabricate four identical composite sections, each with 600 × 1000 mm shear interface between the CLT panel and concrete layer. Test specimens were experimentally examined under direct shear forces until failure. Experimental results show that all test specimens failed due to crushing of the loaded edge of the CLT panel as there was almost no slip at the interface between the CLT panel and concrete layer occurred in any of the four specimens. Outcomes of this experimental study confirmed the assumption of the rigid connection between the CLT panel and concrete layer in such TCC glued sections as all four specimens were able to attain more than 530 kN load without any shear interface failure observed.
Experimental Testing of the Shear Strength of CLT-Concrete Composite Sections Utilizing Adhesive for Shear Connections
Lecture Notes in Civil Engineering
Walbridge, Scott (editor) / Nik-Bakht, Mazdak (editor) / Ng, Kelvin Tsun Wai (editor) / Shome, Manas (editor) / Alam, M. Shahria (editor) / el Damatty, Ashraf (editor) / Lovegrove, Gordon (editor) / Salem, Osama Sam (author) / Chen, Xi (author) / Ali, Sherine (author)
Canadian Society of Civil Engineering Annual Conference ; 2021
Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021 ; Chapter: 36 ; 433-442
2022-04-14
10 pages
Article/Chapter (Book)
Electronic Resource
English
Strength of inclined screw shear connections for timber and concrete composite construction
British Library Online Contents | 2010