The influence of CFRP sheets on the load-bearing capacity of the glued laminated timber beams under bending test
Authors:
- Klaudia Śliwa-Wieczorek,
- Krzysztof Adam Ostrowski,
- Justyna Jaskowska-Lemańska,
- Anna Karolak
Abstract
Composite materials are increasingly used to strengthen existing structures or new loadbearing elements, also made of timber. In this paper, the effect of the number of layers of Carbon Fiber Reinforced Polymer (CFRP) on the load-bearing capacity and stiffness of Glued Laminated Timber beams was determined. Experimental research was performed on 32 elements—a series of eight unreinforced beams, and three series of eight reinforced beams: with one, three and five layers of laminate each. The beams with a cross-section of 38 mm × 80 mm and a length of 750 mm were subjected to the four-point bending test according to standard procedure. For each series, destructive force, deflection, mode of failure, and equivalent stiffness were determined. In addition, for the selected samples, X-ray computed tomography was performed before and after their destruction to define the quality of the interface between wood and composite. The results of the conducted tests and analyses showed that there was no clear relationship between the number of reinforcement layers and the load-bearing capacity of the beams and their stiffness. Unreinforced beams failed due to tension, while reinforced CFRP beams failed due to shear. Despite this, a higher energy of failure of composite-reinforced elements was demonstrated in relation to the reference beams.
- Record ID
- CUT4aab639f1b764b6fb69062596c5e2d3f
- Publication categories
- ;
- Author
- Journal series
- Materials, ISSN , e-ISSN 1996-1944, Biweekly
- Issue year
- 2021
- Vol
- 14
- No
- 14
- Pages
- [1-20]
- Article number
- 4019
- Other elements of collation
- fot.; schem.; tab.; wykr.; Bibliografia (na s.) - 18-20; Bibliografia (liczba pozycji) - 56; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 14, Iss. 14, Spec. Iss.
- Substantive notes
- Special Issue: Advanced Construction Materials and Processes in Poland
- Keywords in English
- glued laminated timber, CFRP, load-bearing capacity, force–displacement relationship, bending test, CT analysis
- DOI
- DOI:10.3390/ma14144019 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1944/14/14/4019 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 140
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT4aab639f1b764b6fb69062596c5e2d3f/
- URN
urn:pkr-prod:CUT4aab639f1b764b6fb69062596c5e2d3f
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.