An expansive dolostone from Argentina
| cic.isFulltext | true | es |
| cic.isPeerReviewed | true | es |
| cic.lugarDesarrollo | Centro de Geología Aplicada, Agua y Medio Ambiente | es |
| cic.version | info:eu-repo/semantics/submittedVersion | es |
| dc.date.accessioned | 2016-10-25T12:29:23Z | |
| dc.date.available | 2016-10-25T12:29:23Z | |
| dc.identifier.uri | https://digital.cic.gba.gob.ar/handle/11746/4494 | |
| dc.title | An expansive dolostone from Argentina | en |
| dc.type | Documento de conferencia | es |
| dcterms.abstract | Alkali-carbonate reaction is a known harmful reaction that affects concrete durability and constitutes an issue of much controversy between researchers and concrete technologists. Since 1991, the authors have been working in this field to evaluate the possibility of the occurrence of this reaction in Argentina. The studies have shown the existence of a fine-grained dolostone that reacts deleteriously with concrete alkalis following a mechanism similar to ACR. This dolostone has two distinctive characteristics. First of all, the rock shows a clear dedolomitization reaction producing calcite and brucite (no siliceous gel was observed in thin sections). Secondly, the use of known mineral admixtures (fly ash, silica fume, ground granulated blast-furnace slag, natural pozzolan) or lithium compounds does not mitigate concrete expansion. This paper summarizes the results obtained with this dolomitic rock using current characterization techniques (ASTM C 586, ASTM C 227, NBRI, concrete prism expansion test, and polarization microscopy). | es |
| dcterms.creator.author | Milanesi, Carlos Alberto | es |
| dcterms.creator.author | Marfil, Silvina Andrea | es |
| dcterms.creator.author | Maiza, Pedro | es |
| dcterms.creator.author | Batic, Oscar R. | es |
| dcterms.extent | 10 p. | es |
| dcterms.isPartOf.issue | XIV International Conference on Alkali-Aggregate Reactions | es |
| dcterms.isPartOf.series | International Conference on Alkali-Aggregate Reactions | es |
| dcterms.issued | 2012 | |
| dcterms.language | Inglés | es |
| dcterms.license | Attribution 4.0 International (BY 4.0) | es |
| dcterms.subject | alkali-carbonate reaction | en |
| dcterms.subject | dedolomitization | en |
| dcterms.subject | mineral admixture | en |
| dcterms.subject | lithium | en |
| dcterms.subject.materia | Geología | es |
| dcterms.title.subtitle | The common dilemma: ACR or another variant of ASR? | en |
Archivos
Bloque original
1 - 1 de 1
Cargando...
- Nombre:
- 133.pdf-PDFA.pdf
- Tamaño:
- 570.54 KB
- Formato:
- Adobe Portable Document Format
- Descripción:
- Documento completo