Influence of Epoxy Glue Modification on the Adhesion of CFRP Tapes to Concrete Surface

Strengthening structural concrete, steel or wooden elements with reinforcement tapes is currently a popular method of extending the durability of buildings. In the glued joint Carbon Fibre Reinforced Polymer (CFRP) tape—concrete substrate, the most critical element is the adhesive layer connecting b...

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Autor principal:	Andrzej Szewczak
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	profilometers epoxy resins sonication viscosity adhesion pull-off test Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/da8ac0d48c3a4daebcdc4fded2bcd06d
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spelling	oai:doaj.org-article:da8ac0d48c3a4daebcdc4fded2bcd06d2021-11-11T17:54:37ZInfluence of Epoxy Glue Modification on the Adhesion of CFRP Tapes to Concrete Surface10.3390/ma142163391996-1944https://doaj.org/article/da8ac0d48c3a4daebcdc4fded2bcd06d2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6339https://doaj.org/toc/1996-1944Strengthening structural concrete, steel or wooden elements with reinforcement tapes is currently a popular method of extending the durability of buildings. In the glued joint Carbon Fibre Reinforced Polymer (CFRP) tape—concrete substrate, the most critical element is the adhesive layer connecting both materials. The glued joint participates in the transfer of stresses between the reinforced element and the reinforcement tape. Among the numerous analyses of this type of joint, the work resulting from the action of shear stresses (shearing) is considered most frequently, which also results from the originally developed computational models emerging with the development of research on the processes of adhesive effectiveness. The subsequent theories considered the share of other stresses, which is also related to the complex nature of the phenomenon of glue adhesion on various surfaces. Research shows the possibility of modifying the adhesion of the glue by altering its composition and the target surface of application. The study contains the results of research on the possibility of changing the adhesion of the glue to a concrete surface prepared by grinding and sandblasting. The selected epoxy resin has been modified by using the additives of microsilica and carbon nanotubes. Effective mixing of ingredients was achieved due to the use of sonication in the mixing process. Then, the adhesives prepared in this way were used to stick fragments of CFRP tape to concrete surfaces: cleaned, ground and sandblasted. A modified version of the pull-off test was used to determine the effectiveness of adhesion the CFRP tapes to concrete. The results are the final stage summarizing a series of studies including other parameters affecting the bonding efficiency and durability of adhesive bonds.Andrzej SzewczakMDPI AGarticleprofilometersepoxy resinssonicationviscosityadhesionpull-off testTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6339, p 6339 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	profilometers epoxy resins sonication viscosity adhesion pull-off test Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	profilometers epoxy resins sonication viscosity adhesion pull-off test Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Andrzej Szewczak Influence of Epoxy Glue Modification on the Adhesion of CFRP Tapes to Concrete Surface
description	Strengthening structural concrete, steel or wooden elements with reinforcement tapes is currently a popular method of extending the durability of buildings. In the glued joint Carbon Fibre Reinforced Polymer (CFRP) tape—concrete substrate, the most critical element is the adhesive layer connecting both materials. The glued joint participates in the transfer of stresses between the reinforced element and the reinforcement tape. Among the numerous analyses of this type of joint, the work resulting from the action of shear stresses (shearing) is considered most frequently, which also results from the originally developed computational models emerging with the development of research on the processes of adhesive effectiveness. The subsequent theories considered the share of other stresses, which is also related to the complex nature of the phenomenon of glue adhesion on various surfaces. Research shows the possibility of modifying the adhesion of the glue by altering its composition and the target surface of application. The study contains the results of research on the possibility of changing the adhesion of the glue to a concrete surface prepared by grinding and sandblasting. The selected epoxy resin has been modified by using the additives of microsilica and carbon nanotubes. Effective mixing of ingredients was achieved due to the use of sonication in the mixing process. Then, the adhesives prepared in this way were used to stick fragments of CFRP tape to concrete surfaces: cleaned, ground and sandblasted. A modified version of the pull-off test was used to determine the effectiveness of adhesion the CFRP tapes to concrete. The results are the final stage summarizing a series of studies including other parameters affecting the bonding efficiency and durability of adhesive bonds.
format	article
author	Andrzej Szewczak
author_facet	Andrzej Szewczak
author_sort	Andrzej Szewczak
title	Influence of Epoxy Glue Modification on the Adhesion of CFRP Tapes to Concrete Surface
title_short	Influence of Epoxy Glue Modification on the Adhesion of CFRP Tapes to Concrete Surface
title_full	Influence of Epoxy Glue Modification on the Adhesion of CFRP Tapes to Concrete Surface
title_fullStr	Influence of Epoxy Glue Modification on the Adhesion of CFRP Tapes to Concrete Surface
title_full_unstemmed	Influence of Epoxy Glue Modification on the Adhesion of CFRP Tapes to Concrete Surface
title_sort	influence of epoxy glue modification on the adhesion of cfrp tapes to concrete surface
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/da8ac0d48c3a4daebcdc4fded2bcd06d
work_keys_str_mv	AT andrzejszewczak influenceofepoxygluemodificationontheadhesionofcfrptapestoconcretesurface
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Influence of Epoxy Glue Modification on the Adhesion of CFRP Tapes to Concrete Surface

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