Effect of Low-Quality Calcined Clay on the Suppression of the Alkali–Silica Reaction
This article presents the results of an experimental investigation into the mitigation of the alkali–silica reaction (ASR) resulting from using low-grade clay calcined at 850 °C. The clay used in the experiment was domestic clay with an Al<sub>2</sub>O<sub>3</sub> content equ...
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| Format: | Article |
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MDPI AG
2023-02-01
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| Series: | Materials Proceedings |
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| Online Access: | https://www.mdpi.com/2673-4605/13/1/15 |
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| author | Daria Jóźwiak-Niedźwiedzka Roman Jaskulski Kinga Dziedzic Aneta Antolik |
| author_facet | Daria Jóźwiak-Niedźwiedzka Roman Jaskulski Kinga Dziedzic Aneta Antolik |
| author_sort | Daria Jóźwiak-Niedźwiedzka |
| collection | DOAJ |
| description | This article presents the results of an experimental investigation into the mitigation of the alkali–silica reaction (ASR) resulting from using low-grade clay calcined at 850 °C. The clay used in the experiment was domestic clay with an Al<sub>2</sub>O<sub>3</sub> content equal to 26% and a SiO<sub>2</sub> content of 58%. The performance of calcined clay in ASR mitigation was evaluated according to ASTM C1567 using reactive aggregates. The control mortar mixture consisted of 100% Portland cement (Na<sub>2</sub>O<sub>eq</sub> = 1.12%) binder and reactive aggregate. The test mixtures used the same reactive aggregate and binders, in which part of the cement was replaced with either 10%, 20% or 30% calcined clay. The microstructure of specimens was examined on the polished sections using a scanning electron microscope (SEM) operated in the backscattered mode (BSE). The results of expansion obtained from the mortar bars made with the reactive aggregate showed that replacing cement by calcined clay reduced their expansion, with the level of expansion decreasing with the increase in the level of cement replacement. |
| first_indexed | 2024-03-11T06:14:31Z |
| format | Article |
| id | doaj.art-ecd5f63da38d45b3a4a23befd3b200c1 |
| institution | Directory Open Access Journal |
| issn | 2673-4605 |
| language | English |
| last_indexed | 2024-03-11T06:14:31Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials Proceedings |
| spelling | doaj.art-ecd5f63da38d45b3a4a23befd3b200c12023-11-17T12:25:57ZengMDPI AGMaterials Proceedings2673-46052023-02-011311510.3390/materproc2023013015Effect of Low-Quality Calcined Clay on the Suppression of the Alkali–Silica ReactionDaria Jóźwiak-Niedźwiedzka0Roman Jaskulski1Kinga Dziedzic2Aneta Antolik3Institute of Fundamental Technological Research, Polish Academy of Sciences, A. Pawińskiego 5b, 02-106 Warsaw, PolandDepartment of Building, Wrocław University of Environmental and Life Sciences, C. K. Norwida 25, 50-375 Wrocław, PolandInstitute of Fundamental Technological Research, Polish Academy of Sciences, A. Pawińskiego 5b, 02-106 Warsaw, PolandInstitute of Fundamental Technological Research, Polish Academy of Sciences, A. Pawińskiego 5b, 02-106 Warsaw, PolandThis article presents the results of an experimental investigation into the mitigation of the alkali–silica reaction (ASR) resulting from using low-grade clay calcined at 850 °C. The clay used in the experiment was domestic clay with an Al<sub>2</sub>O<sub>3</sub> content equal to 26% and a SiO<sub>2</sub> content of 58%. The performance of calcined clay in ASR mitigation was evaluated according to ASTM C1567 using reactive aggregates. The control mortar mixture consisted of 100% Portland cement (Na<sub>2</sub>O<sub>eq</sub> = 1.12%) binder and reactive aggregate. The test mixtures used the same reactive aggregate and binders, in which part of the cement was replaced with either 10%, 20% or 30% calcined clay. The microstructure of specimens was examined on the polished sections using a scanning electron microscope (SEM) operated in the backscattered mode (BSE). The results of expansion obtained from the mortar bars made with the reactive aggregate showed that replacing cement by calcined clay reduced their expansion, with the level of expansion decreasing with the increase in the level of cement replacement.https://www.mdpi.com/2673-4605/13/1/15calcined clayalkali–silica reactionexpansionmitigationmicrostructure |
| spellingShingle | Daria Jóźwiak-Niedźwiedzka Roman Jaskulski Kinga Dziedzic Aneta Antolik Effect of Low-Quality Calcined Clay on the Suppression of the Alkali–Silica Reaction Materials Proceedings calcined clay alkali–silica reaction expansion mitigation microstructure |
| title | Effect of Low-Quality Calcined Clay on the Suppression of the Alkali–Silica Reaction |
| title_full | Effect of Low-Quality Calcined Clay on the Suppression of the Alkali–Silica Reaction |
| title_fullStr | Effect of Low-Quality Calcined Clay on the Suppression of the Alkali–Silica Reaction |
| title_full_unstemmed | Effect of Low-Quality Calcined Clay on the Suppression of the Alkali–Silica Reaction |
| title_short | Effect of Low-Quality Calcined Clay on the Suppression of the Alkali–Silica Reaction |
| title_sort | effect of low quality calcined clay on the suppression of the alkali silica reaction |
| topic | calcined clay alkali–silica reaction expansion mitigation microstructure |
| url | https://www.mdpi.com/2673-4605/13/1/15 |
| work_keys_str_mv | AT dariajozwiakniedzwiedzka effectoflowqualitycalcinedclayonthesuppressionofthealkalisilicareaction AT romanjaskulski effectoflowqualitycalcinedclayonthesuppressionofthealkalisilicareaction AT kingadziedzic effectoflowqualitycalcinedclayonthesuppressionofthealkalisilicareaction AT anetaantolik effectoflowqualitycalcinedclayonthesuppressionofthealkalisilicareaction |