Mechanical properties of alkali activated ground SiMn slag mortars with different types of aggregates

Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10045/77782
Información del item - Informació de l'item - Item information
Título: Mechanical properties of alkali activated ground SiMn slag mortars with different types of aggregates
Autor/es: Navarro, Rosa | García Alcocel, Eva María | Sánchez, Isidro | Garcés, Pedro | Zornoza, Emilio
Grupo/s de investigación o GITE: Durabilidad de Materiales y Construcciones en Ingeniería y Arquitectura
Centro, Departamento o Servicio: Universidad de Alicante. Departamento de Ingeniería Civil | Universidad de Alicante. Departamento de Construcciones Arquitectónicas
Palabras clave: SiMn slag | Alkali activation | Mortar | Aggregate
Área/s de conocimiento: Ingeniería de la Construcción | Construcciones Arquitectónicas
Fecha de publicación: 20-oct-2018
Editor: Elsevier
Cita bibliográfica: Construction and Building Materials. 2018, 186: 79-89. doi:10.1016/j.conbuildmat.2018.07.093
Resumen: This research investigates the mechanical performance and dimensional stability of mortars whose binder is prepared by alkali activation of ground granulated SiMn slag. Two types of activators have been used: NaOH and waterglass solutions. Three different types of aggregates have been tested: silica sand, limestone sand, and recycled sand obtained from recycled concrete. Three activator concentrations have been adopted in the binder design: 3.0, 3.5 and 4.0% Na2O for NaOH solution; and 4.0, 4.5 and 5.0% Na2O for waterglass solutions with a constant SiO2/Na2O of 1.0. The best mechanical performance was obtained for an aggregate/slag ratio of 2/1 when silica sand was used as aggregate: 68 MPa were obtained when waterglass was used as activator, and %Na2O of 4.5–5.0% at 90 days; 54 MPa were obtained for NaOH as activator and 4.0% Na2O at 90 days. Limestone sand also offered a good mechanical performance although the maximum compressive strength achieved was about 25% lower than values obtained with silica sand, but recycled concrete aggregate mortars exhibited poor results, probably due to the high absorption of recycled aggregates. The higher shrinkage was registered in mortars activated with waterglass, although autogenous shrinkage was low for all types of activators and aggregates, except for recycled concrete aggregate.
Patrocinador/es: The authors wish to thank the Spanish Ministry of Economy and Competitiveness and European Union (FEDER) for project funding (BIA 2014-58194-R).
URI: http://hdl.handle.net/10045/77782
ISSN: 0950-0618 (Print) | 1879-0526 (Online)
DOI: 10.1016/j.conbuildmat.2018.07.093
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © 2018 Elsevier Ltd.
Revisión científica: si
Versión del editor: https://doi.org/10.1016/j.conbuildmat.2018.07.093
Aparece en las colecciones:INV - DMCIA - Artículos de Revistas

Archivos en este ítem:
Archivos en este ítem:
Archivo Descripción TamañoFormato 
Thumbnail2018_Navarro_etal_ConBuildMat_final.pdf910,7 kBAdobe PDFAbrir    Solicitar una copia


Todos los documentos en RUA están protegidos por derechos de autor. Algunos derechos reservados.