Repositorio UFRO · Omeka S

Physical and mechanical behavior of concrete specimens using recycled aggregate coated using recycled cement paste

Primer Autor	Letelier, Viviana
Co-autores	Wenzel, Bruno Bustamante, Marion Munoz, Pedro Ortega, Jose Marcos Loyola, Estefania
Título	Physical and mechanical behavior of concrete specimens using recycled aggregate coated using recycled cement paste
Editorial	ELSEVIER SCI LTD
Revista	CONSTRUCTION AND BUILDING MATERIALS
Lenguaje	en
Resumen	Various countries have implemented the use of recycled concrete aggregates (RCA) as an alternative to reduce the use of natural resources. The replacement of RCA for natural aggregates (NA) in concretes is limited to small percentages because of the quality of the old mortar which is still adhered to the RCA. This mortar is more porous and absorbent, weakening the RCA and causing losses in the physical and mechanical properties of new concretes. In addition, the smaller the particles, the greater the amount of adhered mortar, which is why its use in concrete is limited and the fine fraction tends to be discarded. In this study, the use of RCA coated with recycled binder paste (RBP) (smaller than 45 & mu,m) from the crushing of the RCA itself is sought to strengthen weak adhered mortar and improve the properties of the RCA through an economic and sustainable treatment by using the waste of the waste. Therefore, the mechanical, physical and chemical behavior and durability of the concretes are assessed by the use of RCA coated with RBP (replacing by 0%, 50% and 100%). The results indicate a reduction in the mechanical and physical properties of the concrete for the highest replacement percentage of RCA. Nevertheless, the coated recycled aggregate concrete (RAC) showed superior behavior to the untreated RAC, obtaining compressive strengths close to the control and a remarkable improvement in the physical assays.
Fecha Publicación	2023
Tipo de Recurso	artículo original
doi	10.1016/j.conbuildmat.2023.132015
Formato Recurso	PDF
Palabras Claves	Recycled aggregates Concrete Waste valorization Surface treatment Recycled cement Aggregate characterization Mechanical properties
Ubicación del archivo	http://dx.doi.org/10.1016/j.conbuildmat.2023.132015
Categoría OCDE	Construcción y tecnología de la edificación Ingeniería Ciencia de los materiales
Materias	Áridos reciclados Concreto Valorización de residuos Tratamiento de superficies Cemento reciclado Caracterización agregada Propiedades mecánicas
Identificador del recurso (Mandatado-único)	artículo original
Versión del recurso (Recomendado-único)	versión publicada
Derechos de acceso	metadata
Access Rights	metadata
Id de Web of Science	WOS:001028798800001
ISSN	0950-0618
Tipo de ruta	verde / hibrida
Categoría WOS	Construcción y tecnología de la edificación Ingeniería Ciencia de los materiales
Referencia del Financiador (Mandatado si es aplicable-repetible)	ANID-FONDECYT 1211135 ANID FONDECYT REGULAR 1211135