A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Critical chloride threshold levels for stainless steel reinforcement in pore solutions
Selective use of stainless steel reinforcing bars (SSR) in pares of reinforced concrete (RC) structures that will be subject to chloride exposure is becoming more scientific in its application. Since original advice on where to use SSR and steel designation choice was given, concrete mixes have been specified for their durability for a given service life. With data available for the apparent chloride diffusion coefficient for the most used concretes and the chloride surface levels for different exposure conditions are known, it is only the Critical Chloride Threshold Level (CCTL) of the SSR designation to withstand the predicted chloride level at depth for the design life of the structure that needs to be defined. During the years, many researchers have measured the CCTL for a number of different steels. However, since a number of methods have been used, most of them using synthetic pore solutions; the existing CCTL data are diverse and lack the correlation between cast-in testing with in solution testing. This paper aims to clarify and compare results from some literature data for pore-solution and cast-in methods. It further reports the CCTLs of the following designations; 304L, 316L, and 2304 and carbon steel.
Critical chloride threshold levels for stainless steel reinforcement in pore solutions
Selective use of stainless steel reinforcing bars (SSR) in pares of reinforced concrete (RC) structures that will be subject to chloride exposure is becoming more scientific in its application. Since original advice on where to use SSR and steel designation choice was given, concrete mixes have been specified for their durability for a given service life. With data available for the apparent chloride diffusion coefficient for the most used concretes and the chloride surface levels for different exposure conditions are known, it is only the Critical Chloride Threshold Level (CCTL) of the SSR designation to withstand the predicted chloride level at depth for the design life of the structure that needs to be defined. During the years, many researchers have measured the CCTL for a number of different steels. However, since a number of methods have been used, most of them using synthetic pore solutions; the existing CCTL data are diverse and lack the correlation between cast-in testing with in solution testing. This paper aims to clarify and compare results from some literature data for pore-solution and cast-in methods. It further reports the CCTLs of the following designations; 304L, 316L, and 2304 and carbon steel.
Critical chloride threshold levels for stainless steel reinforcement in pore solutions
Kritischer Chloridgrenzwert für nichtrostende Stahlarmierung in Betonporen-Lösung
Randström, S. (author) / Adair, M. (author)
2009
12 Seiten, 5 Tabellen, 30 Quellen
Article (Journal)
English
nichtrostender Stahl , Stabstahl , chemische Zersetzung , Bewehrung , Verstärker , Beton , Pore , Chlorid , Grenzwert , Konzentrationsmessung , Prüfverfahren , Porenlösung , potentiostatische Prüfung , Betonkorrosion , Korrosionsprüfung , Korrosionspotenzial , Korrosionsbeständigkeit , Chrom-Nickel-Stahl , Chrom-Nickel-Molybdän-Stahl
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