Recycling and reconstitution of construction and demolition waste

R.K. Dhir, K.A. Paine, T.D. Dyer

    Research output: Chapter in Book/Report/Conference proceedingOther chapter contribution

    6 Citations (Scopus)

    Abstract

    The annual production of construction demolition (C&D) waste in the UK amounts to 109 million tonnes. This accounts for over 60% of the UK's total waste. Rather than send C&D waste to landfill, increased environmental awareness has led to pressure to use these materials as a resource. There are two ways in which C&D waste can be developed for use in concrete; (i) as recycled aggregates (a commonly perceived approach) or (ii) as a cement component (a novel approach). This paper reports on recent research undertaken by the Concrete Technology Unit (CTU) at the University of Dundee to promote these methods for using C&D waste. Research, carried out since 1996, to show the suitability of coarse recycled aggregates in concrete is described, including a full-scale demonstration that used recycled concrete aggregate as the sole coarse aggregate in a concrete pavement designed for a XF4 exposure class. In addition, the paper reports on research to render C&D waste suitable for use as a cement constituent. The processing options examined are ultrafine grinding and thermal processing. Preliminary results of an ongoing study are presented, along with a discussion of their significance and of the environmental impact implications.
    Original languageEnglish
    Title of host publicationSustainable waste management and recycling : construction demolition waste
    Subtitle of host publicationproceedings of the international conference organised by the Concrete and Masonry Research Group and held at Kingston University - London on 14-15 September 2004
    EditorsMukesh C. Limbachiya, John J. Roberts
    Place of PublicationLondon
    PublisherThomas Telford
    Pages123-132
    Number of pages10
    ISBN (Print)0727732854
    Publication statusPublished - 2004
    EventInternational Conference organized by the Concrete and Masonry Research Group - Kingston University, London, United Kingdom
    Duration: 14 Sep 200415 Sep 2004

    Conference

    ConferenceInternational Conference organized by the Concrete and Masonry Research Group
    CountryUnited Kingdom
    CityKingston University, London
    Period14/09/0415/09/04

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  • Cite this

    Dhir, R. K., Paine, K. A., & Dyer, T. D. (2004). Recycling and reconstitution of construction and demolition waste. In M. C. Limbachiya, & J. J. Roberts (Eds.), Sustainable waste management and recycling : construction demolition waste: proceedings of the international conference organised by the Concrete and Masonry Research Group and held at Kingston University - London on 14-15 September 2004 (pp. 123-132). Thomas Telford.