Concrete damage due to oxidation of pyrrhotite-bearing aggregate: a review
Oxidation of pyrrhotite-bearing aggregates is one of the major causes of concrete damage in numerous buildings in Trois-Rivières in Canada and Connecticut in the USA. In the presence of moisture and oxygen, pyrrhotite oxidizes to generate iron-and sulfate-rich secondary minerals that cause internal...
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| Format: | Article |
| Language: | English |
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RILEM Publications SARL
2021-07-01
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| Series: | RILEM Technical Letters |
| Subjects: | |
| Online Access: | https://letters.rilem.net/index.php/rilem/article/view/138 |
| _version_ | 1818563297406877696 |
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| author | Josée Duchesne Andrea Rodrigues Benoit Fournier |
| author_facet | Josée Duchesne Andrea Rodrigues Benoit Fournier |
| author_sort | Josée Duchesne |
| collection | DOAJ |
| description | Oxidation of pyrrhotite-bearing aggregates is one of the major causes of concrete damage in numerous buildings in Trois-Rivières in Canada and Connecticut in the USA. In the presence of moisture and oxygen, pyrrhotite oxidizes to generate iron-and sulfate-rich secondary minerals that cause internal sulfate attack. Iron sulfides are accessory minerals of different rock types. The distribution of sulfides is often very heterogeneous in terms of aggregate particles, even at the level of the quarries in which some areas may contain copious amounts than others, which complicates the sampling method. Pyrrhotite is a complex mineral with varying chemical composition, crystallographic structure, and specific surface area. These factors influence the reactivity of pyrrhotite. Therefore, it is challenging to control the quality of the aggregate sources.
In this study, recent advances in the identification and quantification of pyrrhotite to diagnose complicated cases are presented, and a performance-based approach for the quality control of new sources of aggregates is introduced. The performance-based approach is preferred because it eliminates the influence of the oxidation of pyrrhotite. |
| first_indexed | 2024-12-14T01:14:50Z |
| format | Article |
| id | doaj.art-9e2df918b06949279419c1bf4e1a6c0d |
| institution | Directory Open Access Journal |
| issn | 2518-0231 |
| language | English |
| last_indexed | 2024-12-14T01:14:50Z |
| publishDate | 2021-07-01 |
| publisher | RILEM Publications SARL |
| record_format | Article |
| series | RILEM Technical Letters |
| spelling | doaj.art-9e2df918b06949279419c1bf4e1a6c0d2022-12-21T23:22:37ZengRILEM Publications SARLRILEM Technical Letters2518-02312021-07-01610.21809/rilemtechlett.2021.138Concrete damage due to oxidation of pyrrhotite-bearing aggregate: a reviewJosée Duchesne0Andrea RodriguesBenoit FournierUniversité LavalOxidation of pyrrhotite-bearing aggregates is one of the major causes of concrete damage in numerous buildings in Trois-Rivières in Canada and Connecticut in the USA. In the presence of moisture and oxygen, pyrrhotite oxidizes to generate iron-and sulfate-rich secondary minerals that cause internal sulfate attack. Iron sulfides are accessory minerals of different rock types. The distribution of sulfides is often very heterogeneous in terms of aggregate particles, even at the level of the quarries in which some areas may contain copious amounts than others, which complicates the sampling method. Pyrrhotite is a complex mineral with varying chemical composition, crystallographic structure, and specific surface area. These factors influence the reactivity of pyrrhotite. Therefore, it is challenging to control the quality of the aggregate sources. In this study, recent advances in the identification and quantification of pyrrhotite to diagnose complicated cases are presented, and a performance-based approach for the quality control of new sources of aggregates is introduced. The performance-based approach is preferred because it eliminates the influence of the oxidation of pyrrhotite.https://letters.rilem.net/index.php/rilem/article/view/138Sulfide mineralspyrrhotiteoxidationinternal sulfate attackdiagnosis |
| spellingShingle | Josée Duchesne Andrea Rodrigues Benoit Fournier Concrete damage due to oxidation of pyrrhotite-bearing aggregate: a review RILEM Technical Letters Sulfide minerals pyrrhotite oxidation internal sulfate attack diagnosis |
| title | Concrete damage due to oxidation of pyrrhotite-bearing aggregate: a review |
| title_full | Concrete damage due to oxidation of pyrrhotite-bearing aggregate: a review |
| title_fullStr | Concrete damage due to oxidation of pyrrhotite-bearing aggregate: a review |
| title_full_unstemmed | Concrete damage due to oxidation of pyrrhotite-bearing aggregate: a review |
| title_short | Concrete damage due to oxidation of pyrrhotite-bearing aggregate: a review |
| title_sort | concrete damage due to oxidation of pyrrhotite bearing aggregate a review |
| topic | Sulfide minerals pyrrhotite oxidation internal sulfate attack diagnosis |
| url | https://letters.rilem.net/index.php/rilem/article/view/138 |
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