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Open AccessArticle

Experimental Comparison of Different Carbon Fiber Composites in Reinforcement Layouts for Wooden Beams of Historical Buildings

1
Department of Applied Physics, University of Granada, Campus Fuentenueva s/n, Granada 18071, Spain
2
Department of Building Constructions, University of Granada, Campus Fuentenueva s/n, Granada 18071, Spain
*
Author to whom correspondence should be addressed.
Materials 2017, 10(10), 1113; https://doi.org/10.3390/ma10101113
Received: 4 August 2017 / Revised: 12 September 2017 / Accepted: 18 September 2017 / Published: 21 September 2017
This paper offers a detailed, quantitative and exhaustive experimental comparison in terms of mechanical properties of three different layouts of carbon composite materials (CFRP) used to strengthen existing old timber beams highly affected by diverse natural defects and biological attacks, testing the use of pultruded laminate attached on the tension side of the element (LR), CFRP fabrics totally U-shape wrapping the timber element (UR), and the combined use of both reinforcement solutions (UR-P). Moreover, unidirectional and bidirectional fabrics were considered and compared. Timber elements used for the experimental program were extracted from a recent rehabilitation of the roof of the current Faculty of Law building, University of Granada (Spain), catalogued as a historical edifice. Experimental results from bending tests show that in all cases reinforcement provides a clear improvement in terms of bending capacity and stiffness as compared with the control specimens (without reinforcement). However, improvements in terms of ductility differ considerably depending on the kind of layout. View Full-Text
Keywords: Timber beams; reinforcement; strengthening; CFRP; rehabilitation; composites Timber beams; reinforcement; strengthening; CFRP; rehabilitation; composites
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Rescalvo, F.J.; Valverde-Palacios, I.; Suarez, E.; Gallego, A. Experimental Comparison of Different Carbon Fiber Composites in Reinforcement Layouts for Wooden Beams of Historical Buildings. Materials 2017, 10, 1113.

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