Artículo
Chloride diffusion in blended cement concrete made with quartzite recycled aggregate
Fecha de publicación:
10/2012
Editorial:
Material research society
Revista:
Mat. Res. Soc. Symp. Proc. (pittsburg)
ISSN:
0272-9172
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Using waste materials as aggregate for new concrete production is a growing tendency, because of several environmental problems. Recycled coarse aggregate (RCA) obtained from crushing waste concrete has lower density and greater absorption than natural aggregate, because of the higher porosity of the mortar attached to the RCA particles. Compressive strength level achieved in recycled concrete may be similar to that of conventional concrete. On the other hand, durable performance of recycled concrete is variable, and diverse evidence can be found in literature for different durability issues. In this paper, chloride ingress in conventional and recycled concrete, made with quartzite aggregate and blended Portland cement is evaluated when immersed in NaCl solution. Two strength levels (21 and 35 MPa) and two contents of RCA (25 and 75%), as substitute of natural quartzite aggregate, were considered. The chloride diffusion coefficient and the relationship between water-soluble chloride and bound chloride are analyzed.
Palabras clave:
Chloride diffusion
,
Blended cement
,
Quartzite
,
Recycled aggregate
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Citación
Zega, Claudio Javier; Villagrán Zaccardi, Yury Andrés; Di Maio, Angel Antonio; Chloride diffusion in blended cement concrete made with quartzite recycled aggregate; Material research society; Mat. Res. Soc. Symp. Proc. (pittsburg); 1488; 10-2012; 62-67
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