Wood ash versus expanded clay aggregate as internal curing water reservoirs in high performance concrete
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Título: | Wood ash versus expanded clay aggregate as internal curing water reservoirs in high performance concrete |
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Autor/es: | Rodríguez-Álvaro, Roberto | González-Fonteboa, Belén | Seara-Paz, Sindy | Tenza-Abril, Antonio José |
Grupo/s de investigación o GITE: | Tecnología de Materiales y Territorio (TECMATER) |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ingeniería Civil |
Palabras clave: | Internal curing agent | Curing sensitivity | Residues | By-product | Circular economy |
Área/s de conocimiento: | Ingeniería de la Construcción |
Fecha de publicación: | 22-abr-2022 |
Editor: | Springer Nature |
Cita bibliográfica: | Materials and Structures. 2022, 55:118. https://doi.org/10.1617/s11527-022-01963-3 |
Resumen: | The performances of expanded clay aggregate and wood ash as internal curing water reservoirs were studied in the mortar phase of a hypothetical high performance concrete with a low water-to-binder ratio. The two materials substituted the 15 and 30% of the sand volume. Two different binders, Portland cement and high-volume fly ash blended cement, were used. The compressive strength and the volume stability of the mortars in sealed and air-drying conditions were studied. Furthermore, the desorption capacity of the internal curing water reservoirs and the internal humidity inside the mortars during the first days after casting were analysed. The results shown that the reduction in the self-desiccation shrinkage was higher when the expanded clay aggregate was used, even in air-drying curing conditions, due to its higher desorption capacity in low-relative-humidity environments in comparison to that of the wood ash. However, wood ash had a stronger beneficial effect on early age autogenous shrinkage without significantly increasing the drying shrinkage. The two alternative aggregates influenced the strength moderately. Considering the technical, economic, and environmental implications of using the two lightweight aggregates, wood ash is recommended. |
Patrocinador/es: | Funding for open access charge: Universidade da Coruña/CISUG. This work has been carried out within the framework of the HACCURACEM project (BIA2017-85657-R), funded by the Ministry of Economy, Industry and Competitiveness, State Program for Research, Development and Innovation aimed at the challenges of Society, within the framework of the State Plan for Scientific and Technical Research and Innovation 2013–2016, Call 2017. We also thank the Xunta de Galicia (Spain) for the financial support through its pre-doctoral contracts program. Finally, we highlight the collaboration of the companies Votorantim Cimentos and Grupo BASF, for the contribution of some of the materials used in this research. |
URI: | http://hdl.handle.net/10045/123156 |
ISSN: | 1359-5997 (Print) | 1871-6873 (Online) |
DOI: | 10.1617/s11527-022-01963-3 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © The Author(s) 2022. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visithttp://creativecommons.org/licenses/by/4.0/. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.1617/s11527-022-01963-3 |
Aparece en las colecciones: | INV - TECMATER - Artículos de Revistas |
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