Use of Recycled Aggregates Made from Construction and Demolition Waste in Sustainable Road Base Layers

Research has been carried out on recycled aggregates from the exclusive crushing of structural concrete waste (CDWRCon) and mixed ceramic materials (CDWRCer) in selective demolitions. This study analyses the use of these recycled aggregates as wet mix macadam (GARCon, GARCer) and in cement soil (CSR...

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Bibliographic Details
Published in:Sustainability 2020-08, Vol.12 (16), p.6663
Main Authors: Teijón-López-Zuazo, Evelio, Vega-Zamanillo, Ángel, Calzada-Pérez, Miguel Ángel, Robles-Miguel, Ángel
Format: Article
Language:English
Subjects:
Aggregates
Asphalt pavements
Cement
Composite materials
Compressive strength
Concrete
Construction
Construction materials
Demolition
Design
Light duty vehicles
Materials selection
Parking facilities
Recycling
Roads
Roads & highways
Stone
Sustainability
Waste disposal
Water infiltration
Waterproofing
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Summary:Research has been carried out on recycled aggregates from the exclusive crushing of structural concrete waste (CDWRCon) and mixed ceramic materials (CDWRCer) in selective demolitions. This study analyses the use of these recycled aggregates as wet mix macadam (GARCon, GARCer) and in cement soil (CSRCon, CSRCer). The materials comply with the requirements of a road base; although, due to the low values of resistance to fragmentation, these materials are adequate for use in sensitive road systems and other places, such as urban roads and car parks, that have a low intensity of heavy traffic. As soluble salt contents were detected, additional waterproofing or drainage measures must be adopted to prevent water infiltration into the layers made up of CDWRCon or CDWRCer. Finally, the high initial values of unconfined compressive strength (UCS) allow the temporary passage of light vehicles over CSRCon or CSRCer after three days.
ISSN:2071-1050
2071-1050
DOI:10.3390/su12166663