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Automated Mineralogical Analysis (QEMSCAN®) as a Complementary Petrographic Tool in Assessing the Potential Alkalis Release from Aggregates
https://orcid.org/http://orcid.org/0000-0002-7404-2997
https://orcid.org/http://orcid.org/0000-0002-6386-619X
https://orcid.org/http://orcid.org/0000-0002-0655-6304
https://orcid.org/http://orcid.org/0000-0002-9939-8682
https://orcid.org/http://orcid.org/0000-0001-6461-4798
https://orcid.org/http://orcid.org/0000-0001-8002-0682
Though an important subject that has been investigated for several decades, the full understanding of the alkali release from aggregates, its contributing factors and role in the alkali-silica reaction still remains a challenge for the scientific community. Recently, the RILEM AAR-8 test method was developed and several improvements to this methodology have already been proposed. In this paper, automated scanning mineralogy (QEMSCAN®) is introduced as a complementary tool for petrographic characterization in order to better understand the factors contributing to the alkali release from aggregates with a similar mineralogy. It was used to examine distinctive textures, grain sizes and alteration of a mylonite, a cataclasite, a gneiss, a granite and an altered granite. The QEMSCAN® analysis enabled a more thorough understanding of the aggregates whilst complimenting the optical petrography.
Automated Mineralogical Analysis (QEMSCAN®) as a Complementary Petrographic Tool in Assessing the Potential Alkalis Release from Aggregates
https://orcid.org/http://orcid.org/0000-0002-7404-2997
https://orcid.org/http://orcid.org/0000-0002-6386-619X
https://orcid.org/http://orcid.org/0000-0002-0655-6304
https://orcid.org/http://orcid.org/0000-0002-9939-8682
https://orcid.org/http://orcid.org/0000-0001-6461-4798
https://orcid.org/http://orcid.org/0000-0001-8002-0682
Though an important subject that has been investigated for several decades, the full understanding of the alkali release from aggregates, its contributing factors and role in the alkali-silica reaction still remains a challenge for the scientific community. Recently, the RILEM AAR-8 test method was developed and several improvements to this methodology have already been proposed. In this paper, automated scanning mineralogy (QEMSCAN®) is introduced as a complementary tool for petrographic characterization in order to better understand the factors contributing to the alkali release from aggregates with a similar mineralogy. It was used to examine distinctive textures, grain sizes and alteration of a mylonite, a cataclasite, a gneiss, a granite and an altered granite. The QEMSCAN® analysis enabled a more thorough understanding of the aggregates whilst complimenting the optical petrography.
Automated Mineralogical Analysis (QEMSCAN®) as a Complementary Petrographic Tool in Assessing the Potential Alkalis Release from Aggregates
https://orcid.org/http://orcid.org/0000-0002-7404-2997
https://orcid.org/http://orcid.org/0000-0002-6386-619X
https://orcid.org/http://orcid.org/0000-0002-0655-6304
https://orcid.org/http://orcid.org/0000-0002-9939-8682
https://orcid.org/http://orcid.org/0000-0001-6461-4798
https://orcid.org/http://orcid.org/0000-0001-8002-0682
Though an important subject that has been investigated for several decades, the full understanding of the alkali release from aggregates, its contributing factors and role in the alkali-silica reaction still remains a challenge for the scientific community. Recently, the RILEM AAR-8 test method was developed and several improvements to this methodology have already been proposed. In this paper, automated scanning mineralogy (QEMSCAN®) is introduced as a complementary tool for petrographic characterization in order to better understand the factors contributing to the alkali release from aggregates with a similar mineralogy. It was used to examine distinctive textures, grain sizes and alteration of a mylonite, a cataclasite, a gneiss, a granite and an altered granite. The QEMSCAN® analysis enabled a more thorough understanding of the aggregates whilst complimenting the optical petrography.
Automated Mineralogical Analysis (QEMSCAN®) as a Complementary Petrographic Tool in Assessing the Potential Alkalis Release from Aggregates
RILEM Bookseries
Sanchez, Leandro F.M. (Herausgeber:in) / Trottier, Cassandra (Herausgeber:in) / Ramos, Violeta (Autor:in) / Fernandes, Isabel (Autor:in) / Rollinson, Gavyn K. (Autor:in) / Andersen, Jens (Autor:in) / Menéndez, Esperanza (Autor:in) / Santos Silva, António (Autor:in)
International Conference on Alkali-Aggregate Reaction in Concrete ; 2024 ; Ottawa, ON, Canada
Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete ; Kapitel: 15 ; 122-131
RILEM Bookseries ; 49
04.05.2024
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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