Recycling and reconstitution of construction and demolition waste

TY - CHAP

T1 - Recycling and reconstitution of construction and demolition waste

AU - Dhir, R.K.

AU - Paine, K.A.

AU - Dyer, T.D.

PY - 2004

Y1 - 2004

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/33644952959

M3 - Other chapter contribution

AN - SCOPUS:33644952959

SN - 0727732854

SP - 123

EP - 132

BT - Sustainable waste management and recycling : construction demolition waste

A2 - Limbachiya, Mukesh C.

A2 - Roberts, John J.

PB - Thomas Telford

CY - London

T2 - International Conference organized by the Concrete and Masonry Research Group

Y2 - 14 September 2004 through 15 September 2004

ER -