Diagnostic Reliability in the Assessment of Degradation in Precast Concrete Elements

In the past century, precast reinforced concrete has become the most widely used construction material in infrastructure engineering, especially for long-span structures. Nowadays, a growing research area concerns the assessment of concrete strength degradation due to environmental exposure and rein...

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Autores principales:	Antonio Bossio, Giuseppe Faella, Giorgio Frunzio, Mariateresa Guadagnuolo, Roberto Serpieri
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	concrete degradation carbonation steel corrosion prestressed concrete Technology T
Acceso en línea:	https://doaj.org/article/4feaa77ec8134ccfb060b18b27a92710
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spelling	oai:doaj.org-article:4feaa77ec8134ccfb060b18b27a927102021-11-25T17:58:54ZDiagnostic Reliability in the Assessment of Degradation in Precast Concrete Elements10.3390/infrastructures61101642412-3811https://doaj.org/article/4feaa77ec8134ccfb060b18b27a927102021-11-01T00:00:00Zhttps://www.mdpi.com/2412-3811/6/11/164https://doaj.org/toc/2412-3811In the past century, precast reinforced concrete has become the most widely used construction material in infrastructure engineering, especially for long-span structures. Nowadays, a growing research area concerns the assessment of concrete strength degradation due to environmental exposure and reinforcement corrosion. This paper reports an experimental campaign on some prefabricated concrete elements that were exposed to atmospheric agents for approximately 20 years. The campaign took the uncommon opportunity to access the full inspection and sampling of rebar. The included activities had different invasiveness and encompassed inspections, core sampling, corrosion potential mapping, compressive strength tests, as well as neutralization depth assays on cored surfaces, on chisel-split surfaces, and on drilling powders. The results bring together a global diagnostic picture of very limited degradation and of elements that are fully able to attend their design service life; the latter is estimated to be considerably higher than 20 years and to exceed 75 years if the concrete mix does not show quality issues. Results also permit drawing considerations on a hierarchy of diagnostic reliability in the evaluation of RC degradation, in which concrete core sampling plays the role of golden standard.Antonio BossioGiuseppe FaellaGiorgio FrunzioMariateresa GuadagnuoloRoberto SerpieriMDPI AGarticleconcrete degradationcarbonationsteel corrosionprestressed concreteTechnologyTENInfrastructures, Vol 6, Iss 164, p 164 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	concrete degradation carbonation steel corrosion prestressed concrete Technology T
spellingShingle	concrete degradation carbonation steel corrosion prestressed concrete Technology T Antonio Bossio Giuseppe Faella Giorgio Frunzio Mariateresa Guadagnuolo Roberto Serpieri Diagnostic Reliability in the Assessment of Degradation in Precast Concrete Elements
description	In the past century, precast reinforced concrete has become the most widely used construction material in infrastructure engineering, especially for long-span structures. Nowadays, a growing research area concerns the assessment of concrete strength degradation due to environmental exposure and reinforcement corrosion. This paper reports an experimental campaign on some prefabricated concrete elements that were exposed to atmospheric agents for approximately 20 years. The campaign took the uncommon opportunity to access the full inspection and sampling of rebar. The included activities had different invasiveness and encompassed inspections, core sampling, corrosion potential mapping, compressive strength tests, as well as neutralization depth assays on cored surfaces, on chisel-split surfaces, and on drilling powders. The results bring together a global diagnostic picture of very limited degradation and of elements that are fully able to attend their design service life; the latter is estimated to be considerably higher than 20 years and to exceed 75 years if the concrete mix does not show quality issues. Results also permit drawing considerations on a hierarchy of diagnostic reliability in the evaluation of RC degradation, in which concrete core sampling plays the role of golden standard.
format	article
author	Antonio Bossio Giuseppe Faella Giorgio Frunzio Mariateresa Guadagnuolo Roberto Serpieri
author_facet	Antonio Bossio Giuseppe Faella Giorgio Frunzio Mariateresa Guadagnuolo Roberto Serpieri
author_sort	Antonio Bossio
title	Diagnostic Reliability in the Assessment of Degradation in Precast Concrete Elements
title_short	Diagnostic Reliability in the Assessment of Degradation in Precast Concrete Elements
title_full	Diagnostic Reliability in the Assessment of Degradation in Precast Concrete Elements
title_fullStr	Diagnostic Reliability in the Assessment of Degradation in Precast Concrete Elements
title_full_unstemmed	Diagnostic Reliability in the Assessment of Degradation in Precast Concrete Elements
title_sort	diagnostic reliability in the assessment of degradation in precast concrete elements
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4feaa77ec8134ccfb060b18b27a92710
work_keys_str_mv	AT antoniobossio diagnosticreliabilityintheassessmentofdegradationinprecastconcreteelements AT giuseppefaella diagnosticreliabilityintheassessmentofdegradationinprecastconcreteelements AT giorgiofrunzio diagnosticreliabilityintheassessmentofdegradationinprecastconcreteelements AT mariateresaguadagnuolo diagnosticreliabilityintheassessmentofdegradationinprecastconcreteelements AT robertoserpieri diagnosticreliabilityintheassessmentofdegradationinprecastconcreteelements
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Diagnostic Reliability in the Assessment of Degradation in Precast Concrete Elements

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