REACTIVITY IN MORTAR PHASE IN RECYCLED CONCRETE AGGREGATE
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Published:1998
M Karlsson, 1998. "REACTIVITY IN MORTAR PHASE IN RECYCLED CONCRETE AGGREGATE", Sustainable Construction: Use of Recycled Concrete Aggregate: Proceedings of the International Symposium organised by the Concrete Technology Unit, University of Dundee and held at the Department of Trade and Industry Conference Centre, London, UK on 11 – 12 November 1998, Ravindra K. Dhir, Neil A. Henderson, Mukesh C. Limbachiya
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Results from life cycle assessment of concrete show that the problem of emissions and resource depletion are considerably due to the production of cement. Sustainable waste management of recycled concrete aggregate (RCA) should therefore, if possible, include hardened cement as a resource. RCA used in sub-bases in roads has the capacity to reharden which means that substitution of virgin aggregates can be made more efficiently. RCA from a residential block in Goteborg has been used in laboratory experiments as a binder. The crushed concrete fines were separated, reground with surface active additive and mixed with coarse RCA and sand. The binder content of the mix was 350 kg/m3 and mean compressive strength of 2.8 MPa, was measured after 28 days of curing.
ABSTRACT.
INTRODUCTION
TESTING REACTIVITY IN MORTAR
RCA FINES AS BINDER
DISCUSSION AND CONCLUSIONS
REFERENCES
