Technical and Environmental Properties of Recycled Aggregates Produced from Concrete Sludge and Excavation Materials

This study presents a Re-Con Zero dry washing technology used to produce recycled aggregates from concrete sludge (RCZ) and combined as a feedstock in wet recycling excavation materials (EM) for unbound applications. A two-component admixture i.e, high water absorbing polymer and aluminum sulphate w...

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Bibliographic Details
Main Authors: Adomako, Solomon, Engelsen, Christian John, Døssland, Line Teigen, Danner, Tobias Alexander, Thorstensen, Rein Terje
Format: Article
Language:English
Subjects:
Los angeles
Micro-deval
Re-Con zero
Recycled aggregates
Wet treatment
Online Access:Request full text
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Summary:This study presents a Re-Con Zero dry washing technology used to produce recycled aggregates from concrete sludge (RCZ) and combined as a feedstock in wet recycling excavation materials (EM) for unbound applications. A two-component admixture i.e, high water absorbing polymer and aluminum sulphate was used in producing RCZ. RCZ0, RCZ50 and RCZ100 were produced with EM within the range 0–100%. Analysis by the Los Angeles (LA) and micro-Deval (MD) test demonstrated RCZ to be of high-quality, hence a clear trend of improved performance as the content increased was observed in the LA and MD values. X-ray diffraction analysis performed on original and pulverized residues (