Durability of concrete structures in marine atmosphere zones – The use of chloride deposition rate on the wet candle as an environmental indicator

Meira, G.R. and Andrade Perdrix, Maria del Carmen and Alonso Alonso, Maria Cruz and Borba Jr., J.C. and Padilha Jr., M. (2010). Durability of concrete structures in marine atmosphere zones – The use of chloride deposition rate on the wet candle as an environmental indicator. "Cement and Concrete Composites", v. 32 (n. 6); pp. 427-435. ISSN 0958-9465. https://doi.org/10.1016/j.cemconcomp.2010.03.002.

Description

Title: Durability of concrete structures in marine atmosphere zones – The use of chloride deposition rate on the wet candle as an environmental indicator
Author/s:
  • Meira, G.R.
  • Andrade Perdrix, Maria del Carmen
  • Alonso Alonso, Maria Cruz
  • Borba Jr., J.C.
  • Padilha Jr., M.
Item Type: Article
Título de Revista/Publicación: Cement and Concrete Composites
Date: January 2010
ISSN: 0958-9465
Volume: 32
Subjects:
Freetext Keywords: Chloride deposition; Concrete durability; Environmental indicator; Marine atmosphere zone; Wet candle
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ingeniería Civil: Construcción
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Durability of concrete structures under marine environments has been studied for a long time. This work was focused on marine atmosphere zone and studied the deposition of chlorides on wet candle devices and its relation with chlorides accumulated into concrete. Concrete specimens with three different mixtures were exposed at places located at four different distances from the sea. Periodically, chloride profiles were obtained and analysed taking into account environmental data. Results of numerical extrapolations show that chloride deposition rate on the wet candle can be used as an environmental indicator, helping to preview the expectancy of service life of concrete structures or suggesting minimum concrete cover thicknesses for a required service life. Regarding the studied region, service life decreases between 30% and 60% were observed when changing chloride deposition from 120 mg/m2 day to 500 mg/m2 day, which shows that chloride deposition plays an important role as an environmental indicator on service-life analysis of concrete structures in marine atmosphere zone.

More information

Item ID: 8751
DC Identifier: http://oa.upm.es/8751/
OAI Identifier: oai:oa.upm.es:8751
DOI: 10.1016/j.cemconcomp.2010.03.002
Official URL: http://www.sciencedirect.com/science/article/pii/S0958946510000399
Deposited by: Memoria Investigacion
Deposited on: 30 Sep 2011 08:45
Last Modified: 20 Apr 2016 17:25
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