RC slabs strengthened with externally bonded CFRP strips under long-term environmental exposure and sustained loading. Part 2: Laboratory experiments

This investigation consists of two parts (outdoor and laboratory experiments). The first part described RC slabs strengthened with prestressed and non-prestressed CFRP strips; these slabs were loaded and exposed to an outdoor environment for four years. It was found that the elevated temperatures re...

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Autores principales:	Matteo Breveglieri, Christoph Czaderski
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Concrete slabs CFRP strengthening Temperature and sustained load long-term effects Prestressed composites strips using the Gradient Anchorage Concrete bridges Viscoelastic behaviour Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/14349204fa2f46ca8455f9b9b87eba87
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spelling	oai:doaj.org-article:14349204fa2f46ca8455f9b9b87eba872021-12-02T05:04:10ZRC slabs strengthened with externally bonded CFRP strips under long-term environmental exposure and sustained loading. Part 2: Laboratory experiments2666-682010.1016/j.jcomc.2021.100210https://doaj.org/article/14349204fa2f46ca8455f9b9b87eba872021-10-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S266668202100102Xhttps://doaj.org/toc/2666-6820This investigation consists of two parts (outdoor and laboratory experiments). The first part described RC slabs strengthened with prestressed and non-prestressed CFRP strips; these slabs were loaded and exposed to an outdoor environment for four years. It was found that the elevated temperatures reached in the adhesive did not significantly affect the service behaviour of non-prestressed EB CFRPs, but could lead to the failure of the prestressed system.In the second part of the discussion, laboratory experiments are presented. Failure tests were performed to determine the ultimate strengths of the slabs. The results demonstrate that long-term exposure (thermal cycles and sustained load) does not affect the load-carrying capacity of the strengthened RC elements. Furthermore, an additional slab with an identical strengthening configuration was tested after being subjected to thermal cycles under a heavy sustained load under laboratory conditions, allowing us to better understand and verify the results obtained during the long-term experiments.Matteo BreveglieriChristoph CzaderskiElsevierarticleConcrete slabs CFRP strengtheningTemperature and sustained load long-term effectsPrestressed composites strips using the Gradient AnchorageConcrete bridgesViscoelastic behaviourMaterials of engineering and construction. Mechanics of materialsTA401-492ENComposites Part C: Open Access, Vol 6, Iss , Pp 100210- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Concrete slabs CFRP strengthening Temperature and sustained load long-term effects Prestressed composites strips using the Gradient Anchorage Concrete bridges Viscoelastic behaviour Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Concrete slabs CFRP strengthening Temperature and sustained load long-term effects Prestressed composites strips using the Gradient Anchorage Concrete bridges Viscoelastic behaviour Materials of engineering and construction. Mechanics of materials TA401-492 Matteo Breveglieri Christoph Czaderski RC slabs strengthened with externally bonded CFRP strips under long-term environmental exposure and sustained loading. Part 2: Laboratory experiments
description	This investigation consists of two parts (outdoor and laboratory experiments). The first part described RC slabs strengthened with prestressed and non-prestressed CFRP strips; these slabs were loaded and exposed to an outdoor environment for four years. It was found that the elevated temperatures reached in the adhesive did not significantly affect the service behaviour of non-prestressed EB CFRPs, but could lead to the failure of the prestressed system.In the second part of the discussion, laboratory experiments are presented. Failure tests were performed to determine the ultimate strengths of the slabs. The results demonstrate that long-term exposure (thermal cycles and sustained load) does not affect the load-carrying capacity of the strengthened RC elements. Furthermore, an additional slab with an identical strengthening configuration was tested after being subjected to thermal cycles under a heavy sustained load under laboratory conditions, allowing us to better understand and verify the results obtained during the long-term experiments.
format	article
author	Matteo Breveglieri Christoph Czaderski
author_facet	Matteo Breveglieri Christoph Czaderski
author_sort	Matteo Breveglieri
title	RC slabs strengthened with externally bonded CFRP strips under long-term environmental exposure and sustained loading. Part 2: Laboratory experiments
title_short	RC slabs strengthened with externally bonded CFRP strips under long-term environmental exposure and sustained loading. Part 2: Laboratory experiments
title_full	RC slabs strengthened with externally bonded CFRP strips under long-term environmental exposure and sustained loading. Part 2: Laboratory experiments
title_fullStr	RC slabs strengthened with externally bonded CFRP strips under long-term environmental exposure and sustained loading. Part 2: Laboratory experiments
title_full_unstemmed	RC slabs strengthened with externally bonded CFRP strips under long-term environmental exposure and sustained loading. Part 2: Laboratory experiments
title_sort	rc slabs strengthened with externally bonded cfrp strips under long-term environmental exposure and sustained loading. part 2: laboratory experiments
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/14349204fa2f46ca8455f9b9b87eba87
work_keys_str_mv	AT matteobreveglieri rcslabsstrengthenedwithexternallybondedcfrpstripsunderlongtermenvironmentalexposureandsustainedloadingpart2laboratoryexperiments AT christophczaderski rcslabsstrengthenedwithexternallybondedcfrpstripsunderlongtermenvironmentalexposureandsustainedloadingpart2laboratoryexperiments
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RC slabs strengthened with externally bonded CFRP strips under long-term environmental exposure and sustained loading. Part 2: Laboratory experiments

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