Correlations between physical and chemical properties of mixed recycled aggregates

Title: Correlations between physical and chemical properties of mixed recycled aggregates
Author(s): F. Agrela, V.L. Geraldes, J.R. Jiménez and J. Ayuso
Paper category : conference
Book title: 2nd International RILEM Conference on Progress of Recycling in the Built Environment
Editor(s): V.M. John, E. Vazquez, S.C. Angulo, C. Ulsen
e-ISBN: 978-2-35158-122-3
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 401 - 410
Total Pages: 10
Nb references: 17
Language: English

Abstract: Recycling of Construction and Demolition Waste (CDW) has become a widespread concern in Spain for the last years, as a way to preserve natural resources and achieve a better control of waste disposal sites. Specific applications where mixed recycled aggregates can be used have a special importance as these types of aggregates constitute the majority of the total production. Non structural concrete is one of the possible applications, being the objective of this study.

This paper presents a study on the physical and chemical characteristics of mixed recycled aggregates taken from different treatment plants of CDW in Spain. Correlations between the various properties were investigated in order to find criterions of acceptance for recycled aggregates to be used in non structural concrete.

The comparison between the properties shows that it is possible to pre-select mixed recycled aggregates lots, suitable for non structural concrete. Thus, the determination of the water absorption in 10 minutes and the gypsum content are good indicators to evaluate the quality of the mixed recycled aggregates for its application in non structural concrete.

Online publication: 2012-02-08
Publication type : full_text
Public price (Euros): 0.00