Compartir
Título
Innovative approach for the protection of recycled concrete by biogenic silica biodeposition
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Construction and Building Materials
Datos de la obra
Merino-Maldonado, D., Antolín-Rodríguez, A., Serrano-González, L., Blanco, S., Juan-Valdés, A., Morán-del Pozo, J. M., & García-González, J. (2023). Innovative approach for the protection of recycled concrete by biogenic silica biodeposition. Construction and Building Materials, 368. https://doi.org/10.1016/J.CONBUILDMAT.2023.130475
Editor
Elsevier
Fecha
2023
ISSN
0950-0618
Résumé
[EN] Over the past few years, the construction industry has sought to be more sustainable through use of more economically responsible materials and the use of environmentally friendly techniques such as bio-remediation. One promising area in this regard is that of surface treatments, particularly bio-repair techniques, to reduce the deterioration suffered by cement-based materials as a result of environmental conditions. This study presents original work on the use of silicaceous biodeposition by diatoms as a waterproofing surface treatment for recycled concrete. A recycled concrete mix containing a 50% substitution of recycled aggregates (RA) was used as a test substrate and the effectiveness of the bio-treatment was assessed using four different tests: capillary absorption, high-pressure water penetration, low-pressure water absorption and also characterised the biodeposited layer using SEM. Results demonstrate reductions of up to 33% in the capillary absorption test, while high-pressure water penetration decreased by 54.7%, compared to controls. In addition, Karsten tube tests showed low-pressure water absorption was delayed by up to 436 times relative to control samples. In combination these tests confirm the efficacy of diatom biodeposition as a protective surface treatment for cement-based construction materials.
Materia
Palabras clave
Peer review
SI
ID proyecto
- info:eu-repo/grantAgreement/ORDER EDU/601/2020/Junta de Castilla y León
- info:eu-repo/grantAgreement/ ORDER EDU/875/2021/Junta de Castilla y León
URI
DOI
Aparece en las colecciones
- Untitled [4950]
Fichier(s) constituant ce document
Tamaño:
3.098
xmlui.dri2xhtml.METS-1.0.size-megabytes
Formato:
Adobe PDF