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Open AccessArticle

Flexible Adhesive in Composite-to-Brick Strengthening—Experimental and Numerical Study

1
Institute of Structural Mechanics, Cracow University of Technology, 31-155 Cracow, Poland
2
Institute of Building Materials and Structures, Cracow University of Technology, 31-155 Cracow, Poland
3
Institute for Computational Civil Engineering, Cracow University of Technology, 31-155 Cracow, Poland
*
Author to whom correspondence should be addressed.
Polymers 2018, 10(4), 356; https://doi.org/10.3390/polym10040356
Received: 16 February 2018 / Revised: 12 March 2018 / Accepted: 18 March 2018 / Published: 22 March 2018
(This article belongs to the Special Issue Selected Papers from "SMAR 2017")
This paper investigates composite-to-brick strengthening systems with flexible adhesive made of polyurethane (Carbon Fibre Reinforced Polyurethane (CFRPU) and Steel Reinforced Polyurethane (SRPU)) and epoxy resin (Carbon Fibre Reinforced Polymer (CFRP) and Steel Reinforced Polymer (SRP). The specimens were tested in a single lap shear test (SLST). LVDT displacement transducers (LVDT – Linear Variable Differential Transformer) and digital image correlation method (DIC) based measurement systems were used to measure displacements and strains. The obtained results were applied in a numerical analysis of the 3D model of the SLST specimen, with flexible adhesives modeled as a hyper-elastic model. The DIC and LVDT based systems demonstrated a good correlation. Experimental and numerical analysis confirmed that composite-to-brick strengthening systems with flexible adhesives are more effective on brittle substrates than stiff ones, as they are able to reduce stress concentrations and more evenly distribute stress along the entire bonded length, thus having a higher load carrying capacity. View Full-Text
Keywords: strengthening; masonry; CFRP; CFRPU; SRP; SRPU; flexible adhesives; experimental tests; DIC measurements; shear bond tests; numerical analysis strengthening; masonry; CFRP; CFRPU; SRP; SRPU; flexible adhesives; experimental tests; DIC measurements; shear bond tests; numerical analysis
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MDPI and ACS Style

Kwiecień, A.; Krajewski, P.; Hojdys, Ł.; Tekieli, M.; Słoński, M. Flexible Adhesive in Composite-to-Brick Strengthening—Experimental and Numerical Study. Polymers 2018, 10, 356. https://doi.org/10.3390/polym10040356

AMA Style

Kwiecień A, Krajewski P, Hojdys Ł, Tekieli M, Słoński M. Flexible Adhesive in Composite-to-Brick Strengthening—Experimental and Numerical Study. Polymers. 2018; 10(4):356. https://doi.org/10.3390/polym10040356

Chicago/Turabian Style

Kwiecień, Arkadiusz; Krajewski, Piotr; Hojdys, Łukasz; Tekieli, Marcin; Słoński, Marek. 2018. "Flexible Adhesive in Composite-to-Brick Strengthening—Experimental and Numerical Study" Polymers 10, no. 4: 356. https://doi.org/10.3390/polym10040356

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