Basic Chemical Tests of Concrete during the Assessment of Structure Suitability—Discussion on Selected Industrial Structures

Making a decision to perform an overhaul of a damaged reinforced concrete structure should be preceded by an analysis of the real durability of that structure after the repair in connection with the anticipated service life. One of the basic problems is the avoidance of further corrosion of concrete...

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Main Authors: Jacek Hulimka, Marta Kałuża
Format: Article
Language:English
Published: MDPI AG 2020-01-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/10/1/358
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author Jacek Hulimka
Marta Kałuża
author_facet Jacek Hulimka
Marta Kałuża
author_sort Jacek Hulimka
collection DOAJ
description Making a decision to perform an overhaul of a damaged reinforced concrete structure should be preceded by an analysis of the real durability of that structure after the repair in connection with the anticipated service life. One of the basic problems is the avoidance of further corrosion of concrete and steel after the repair, which depends on the degree of concrete contamination with harmful chemical factors. It is particularly important to determine the content of chloride and sulfate ions which cause corrosion. Concrete pH is equally significant because it conditions effective passivation of the reinforcement. The paper presents the basic issues related to the main chemical threats, including the main sources of their origin as well as their limit values. It emphasizes the importance of conducting the chemical tests of concrete, which should be treated as one of the methods of determining structure suitability for an overhaul, especially in the context of subsequent durability. This seems obvious to an experienced specialist, but in practice, such studies are often ignored. Those considerations are backed up with selected examples of reinforced concrete industrial structures exposed to aggressive chemicals during their operation. The text shows the correlation between their technical condition and chemical test results as well as the influence of those results on making decisions concerning effective overhauls.
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spelling doaj.art-0cef2565dc324d0aa4817bfb33c49df02022-12-22T02:01:14ZengMDPI AGApplied Sciences2076-34172020-01-0110135810.3390/app10010358app10010358Basic Chemical Tests of Concrete during the Assessment of Structure Suitability—Discussion on Selected Industrial StructuresJacek Hulimka0Marta Kałuża1Faculty of Civil Engineering, Silesian University of Technology, 44-100 Gliwice, PolandFaculty of Civil Engineering, Silesian University of Technology, 44-100 Gliwice, PolandMaking a decision to perform an overhaul of a damaged reinforced concrete structure should be preceded by an analysis of the real durability of that structure after the repair in connection with the anticipated service life. One of the basic problems is the avoidance of further corrosion of concrete and steel after the repair, which depends on the degree of concrete contamination with harmful chemical factors. It is particularly important to determine the content of chloride and sulfate ions which cause corrosion. Concrete pH is equally significant because it conditions effective passivation of the reinforcement. The paper presents the basic issues related to the main chemical threats, including the main sources of their origin as well as their limit values. It emphasizes the importance of conducting the chemical tests of concrete, which should be treated as one of the methods of determining structure suitability for an overhaul, especially in the context of subsequent durability. This seems obvious to an experienced specialist, but in practice, such studies are often ignored. Those considerations are backed up with selected examples of reinforced concrete industrial structures exposed to aggressive chemicals during their operation. The text shows the correlation between their technical condition and chemical test results as well as the influence of those results on making decisions concerning effective overhauls.https://www.mdpi.com/2076-3417/10/1/358reinforced concretedurabilitychemical testsdiagnosticindustrial structurescorrosion
spellingShingle Jacek Hulimka
Marta Kałuża
Basic Chemical Tests of Concrete during the Assessment of Structure Suitability—Discussion on Selected Industrial Structures
Applied Sciences
reinforced concrete
durability
chemical tests
diagnostic
industrial structures
corrosion
title Basic Chemical Tests of Concrete during the Assessment of Structure Suitability—Discussion on Selected Industrial Structures
title_full Basic Chemical Tests of Concrete during the Assessment of Structure Suitability—Discussion on Selected Industrial Structures
title_fullStr Basic Chemical Tests of Concrete during the Assessment of Structure Suitability—Discussion on Selected Industrial Structures
title_full_unstemmed Basic Chemical Tests of Concrete during the Assessment of Structure Suitability—Discussion on Selected Industrial Structures
title_short Basic Chemical Tests of Concrete during the Assessment of Structure Suitability—Discussion on Selected Industrial Structures
title_sort basic chemical tests of concrete during the assessment of structure suitability discussion on selected industrial structures
topic reinforced concrete
durability
chemical tests
diagnostic
industrial structures
corrosion
url https://www.mdpi.com/2076-3417/10/1/358
work_keys_str_mv AT jacekhulimka basicchemicaltestsofconcreteduringtheassessmentofstructuresuitabilitydiscussiononselectedindustrialstructures
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