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Sensitivity Analysis of Stochastic Calculation of SCC Regarding Aggressive Environment
Probabilistic procedures considering the durability with respect to corrosion of reinforcement caused by aggressive substances are widely applied; however, they are based on narrow assumptions. The aspects need to be evaluated both in terms of the search for suitable application of the various exper...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8618124/ https://www.ncbi.nlm.nih.gov/pubmed/34832240 http://dx.doi.org/10.3390/ma14226838 |
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author | Lehner, Petr Horňáková, Marie Hrabová, Kristýna |
author_facet | Lehner, Petr Horňáková, Marie Hrabová, Kristýna |
author_sort | Lehner, Petr |
collection | PubMed |
description | Probabilistic procedures considering the durability with respect to corrosion of reinforcement caused by aggressive substances are widely applied; however, they are based on narrow assumptions. The aspects need to be evaluated both in terms of the search for suitable application of the various experimental results and in terms of their impact on the result of the stochastic assessment itself. In this article, sensitivity analysis was used as an ideal tool to prove how input parameters affect the results of the evaluation, with consideration of different types of concrete (ordinary or self-compacting with and without fibres). These concretes may be used in aggressive environments, as an industrial floor or as a part of the load-bearing bridge structure. An example of a reinforced concrete bridge deck was selected as the solved structure. The results show that in the case of a classic evaluation, a larger amount of fibre reports a lower resistance of concrete, which contradicts the assumptions. The sensitivity analysis then shows that self-compacting concrete is more sensitive to the values of the diffusion coefficient, and with the consideration of fibres, the effect is even greater. |
format | Online Article Text |
id | pubmed-8618124 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-86181242021-11-27 Sensitivity Analysis of Stochastic Calculation of SCC Regarding Aggressive Environment Lehner, Petr Horňáková, Marie Hrabová, Kristýna Materials (Basel) Article Probabilistic procedures considering the durability with respect to corrosion of reinforcement caused by aggressive substances are widely applied; however, they are based on narrow assumptions. The aspects need to be evaluated both in terms of the search for suitable application of the various experimental results and in terms of their impact on the result of the stochastic assessment itself. In this article, sensitivity analysis was used as an ideal tool to prove how input parameters affect the results of the evaluation, with consideration of different types of concrete (ordinary or self-compacting with and without fibres). These concretes may be used in aggressive environments, as an industrial floor or as a part of the load-bearing bridge structure. An example of a reinforced concrete bridge deck was selected as the solved structure. The results show that in the case of a classic evaluation, a larger amount of fibre reports a lower resistance of concrete, which contradicts the assumptions. The sensitivity analysis then shows that self-compacting concrete is more sensitive to the values of the diffusion coefficient, and with the consideration of fibres, the effect is even greater. MDPI 2021-11-12 /pmc/articles/PMC8618124/ /pubmed/34832240 http://dx.doi.org/10.3390/ma14226838 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Lehner, Petr Horňáková, Marie Hrabová, Kristýna Sensitivity Analysis of Stochastic Calculation of SCC Regarding Aggressive Environment |
title | Sensitivity Analysis of Stochastic Calculation of SCC Regarding Aggressive Environment |
title_full | Sensitivity Analysis of Stochastic Calculation of SCC Regarding Aggressive Environment |
title_fullStr | Sensitivity Analysis of Stochastic Calculation of SCC Regarding Aggressive Environment |
title_full_unstemmed | Sensitivity Analysis of Stochastic Calculation of SCC Regarding Aggressive Environment |
title_short | Sensitivity Analysis of Stochastic Calculation of SCC Regarding Aggressive Environment |
title_sort | sensitivity analysis of stochastic calculation of scc regarding aggressive environment |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8618124/ https://www.ncbi.nlm.nih.gov/pubmed/34832240 http://dx.doi.org/10.3390/ma14226838 |
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