(Open Access)
Z. Szweda
Volume 563: Issue 7
Pages 34 – 35
Accepted for publication: 30.05.2019 r.
The aim of the work was analysis of the determained diffusion coefficient values and chlorides migration in concrete which was taken directly from prefabricated prestressed HC-500 slabs. Diffusion coefficient and migration values used in the analysis were determined in accordance with the norm and thermodynamic migration model. Said diffusion coefficient and migration coefficient are significantly different. Values of mean square error between values of chloride ions concentration and values determined by the diffusion research were compared. Chloride ions concentrations were determined based on the solution of diffusion equation with the use of diffusion coefficients determined with various methods.
Keywords: diffusion coefficient; chlorides migration; prefabricated prestressed slabs.
Keywords: diffusion coefficient; chlorides migration; prefabricated prestressed slabs.
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[2] ASTMC 1556-03. Standard testmethod for determining the apparent chloride diffusion coefficient of cementitious mixtures by bulk diffusion, 2003.
[3] ASTMC 1760 Standard Test Method for Bulk Electrical Conductivity of Hardened Concrete.
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[5] Konecný Petr, Petr Lehner, Tomasz Ponikiewski, Patrycja Miera. 2017. „Comparison of Chloride Diffusion Coefficient Evaluation Based on Electrochemical Methods”. Procedia Eng., 190, pp. 193 – 198. DOI: 10.1016/j.proeng.2017.05.326.
[6] NT BUILD 443. Concrete, hardened: Accelerated chloride penetration. Approved 1995–11.
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[8] Szweda Zofia. 2018, „The analysis of the protective features of the concrete used in prefabricated prestressed concrete slabs (type HC) for the chlorides penetration”. MATEC Web of Conf., vol. 163 2261- 236X. DOI: 10.1051/matecconf/201816305006.
[9] Szweda Zofia. 2018. „Comparison of diffusion and migration coefficients determined fromtests on concrete in prestressed floor slabs HC-500”. 2019. IOP Conference Series Materials Science and Engineering 471: 052034. DOI: 10.1088/1757- 899X/471/5/0520341757-8981.
[2] ASTMC 1556-03. Standard testmethod for determining the apparent chloride diffusion coefficient of cementitious mixtures by bulk diffusion, 2003.
[3] ASTMC 1760 Standard Test Method for Bulk Electrical Conductivity of Hardened Concrete.
[4] Czarnecki Lech, Piotr Woyciechowski. 2013. „Prediction of the reinforced concrete structure durability under the risk of carbonation and chloride aggression”. Bulletin Of The Polish Academy of Sciences Technical Sciences,Vol. 61, No. 1, DOI: 10.2478/bpasts-2013-0016.
[5] Konecný Petr, Petr Lehner, Tomasz Ponikiewski, Patrycja Miera. 2017. „Comparison of Chloride Diffusion Coefficient Evaluation Based on Electrochemical Methods”. Procedia Eng., 190, pp. 193 – 198. DOI: 10.1016/j.proeng.2017.05.326.
[6] NT BUILD 443. Concrete, hardened: Accelerated chloride penetration. Approved 1995–11.
[7] NT BUILD 492. Concrete, mortar and cement- based repair materials, chloride migration coefficient fromnon-steady-statemigration experiments. Nordtest Method 492; 1999.
[8] Szweda Zofia. 2018, „The analysis of the protective features of the concrete used in prefabricated prestressed concrete slabs (type HC) for the chlorides penetration”. MATEC Web of Conf., vol. 163 2261- 236X. DOI: 10.1051/matecconf/201816305006.
[9] Szweda Zofia. 2018. „Comparison of diffusion and migration coefficients determined fromtests on concrete in prestressed floor slabs HC-500”. 2019. IOP Conference Series Materials Science and Engineering 471: 052034. DOI: 10.1088/1757- 899X/471/5/0520341757-8981.
dr inż. Zofia Szweda, Politechnika Śląska; Wydział Budownictwa
ORCID: 0000-0001-5543-7494
ORCID: 0000-0001-5543-7494
dr inż. Zofia Szweda, Politechnika Śląska; Wydział Budownictwa
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