标题：Un estudio para la aplicación del árido reciclado en obras de carreteras en España siguiendo las especificaciones del Pliego de Prescripciones Técnicas Generales para Obras de Carreteras y Puentes (PG-3)
出版社：Consejo Superior de Investigaciones Científicas
摘要：This research characterizes four samples of recycled aggregate for their potential use in road construction projects in consonance with the Spanish General Technical Specifications for Roads and Bridge Works (PG-3).Although some fractions were of sufficient quality for the construction of embankments, backfills, and quarry-run fills, they were ultimately found to be unsuitable for the construction of underground drainage, granular structural layers, soil stabilization and concrete pavements.They were negatively evaluated because of their particle size distribution and sulfate content.Nevertheless, the quality of this recycled aggregate could be substantially improved by manually removing the gypsum before the crushing process at the plant or by selecting the material with greater care at the beginning of the process.Finally, we suggest that Construction and Demolition (C&D) waste plant managers should modify the manufacturing process to obtain a suitable particle size distribution in accordance with PG-3 requirements and the projected use of the aggregate.
关键词：Residuos de construcción; residuos de demolición; árido reciclado; obras de carreteras; pliego de Prescripciones Técnicas Generales para Obras de Carreteras y Puentes (PG-3)
其他关键词：Construction waste; demolition waste; recycled aggregate; road construction; Spanish General Technical Specifications for Roads and Bridge Works (PG-3)
