SELF-COMPACTING CONCRETE INCORPORATING RECYCLED AGGREGATE
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Published:2002
V Corinaldesi, G Orlandi, G Moriconi, 2002. "SELF-COMPACTING CONCRETE INCORPORATING RECYCLED AGGREGATE", Innovations and Developments In Concrete Materials And Construction: Proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9–11 September 2002, Ravindra K. Dhir, Peter C. Hewlett, Laszlo J. Csetenyi
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Early results of an experimental program aimed at producing and evaluating self-compacting concretes, made with recycled instead of natural aggregates, are presented and discussed. The recycled aggregates were directly supplied by an industrial crushing plant in which debris from building demolition are suitably treated. Concretes were prepared by varying the water to binder ratio in the range 0.35–0.40 and by adding a filler to the mixture, at a dosage of 15% by weight of cement, which was alternatively a Class F fly ash or a silica fume or a powder obtained from the rubble recycling process. The fresh concrete properties were evaluated through slump flow and L-box test, by also monitoring segregation resistance. Compressive strength was measured after 1, 3, 7, 14 and 28 days of wet curing. Results obtained showed self-compacting concrete could be successfully developed by incorporating recycled aggregates.
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