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Screen-printed elec...
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Sassolini, Alessandro
(författare)
Screen-printed electrode as a cost-effective and miniaturized analytical tool for corrosion monitoring of re-inforced concrete
- Artikel/kapitelEngelska2019
Förlag, utgivningsår, omfång ...
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Elsevier BV,2019
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electronicrdacarrier
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LIBRIS-ID:oai:DiVA.org:uu-372642
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-372642URI
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https://doi.org/10.1016/j.elecom.2018.11.023DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:art swepub-publicationtype
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Herein, we report the first electrochemical sensor based on a screen-printed electrode designed to evaluate the corrosion level in iron-reinforced concrete specimens. The combination of an Ag pseudoreference electrode with a gel polymeric electrolyte allows for fast, stable and cost-effective potentiometric measurements, suitable for evaluating the corrosion of iron bars embedded in concrete samples. The sensor was found to be capable of discriminating between a standard non-corroded sample and samples subject to corrosion due to the presence of chloride or carbonate in the concrete matrix. The potential in concrete-based specimens containing carbonate (pH 9, - 0.35 +/- 0.03 V) or chloride (4% w/w, - 0.52 +/- 0.01 V) was found to be more negative than in a standard concrete-based sample ( - 0.251 +/- 0.003 V), in agreement with the ASTM standard C876 method which uses a classical Cu/CuSO4 solid reference electrode. Our results demonstrate that a printed Ag pseudoreference electrode combined with KC1 agar provides an efficient and reliable electrochemical system for evaluating the corrosion of iron bars embedded in concrete-based structures.
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Biuppslag (personer, institutioner, konferenser, titlar ...)
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Colozza, Noemi
(författare)
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Papa, Elena
(författare)
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Hermansson, Kersti,ProfessorUppsala universitet,Strukturkemi(Swepub:uu)kerstihs
(författare)
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Cacciotti, Ilaria
(författare)
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Arduini, Fabiana
(författare)
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Uppsala universitetStrukturkemi
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Electrochemistry communications: Elsevier BV98, s. 69-721388-24811873-1902
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