dc.contributor.author | Lake, Craig B | |
dc.contributor.author | Choi, Hun | |
dc.contributor.author | Hills, Colin D. | |
dc.contributor.author | Gunning, Peter | |
dc.contributor.author | Manaqibwala, Idris | |
dc.date.accessioned | 2017-01-11T17:39:32Z | |
dc.date.available | 2017-01-11T17:39:32Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Published version: Lake, C.B., Choi, H., Hills, C.D., Gunning, P. and Manaqibwala, I. 2016. Manufactured Aggregate from Cement Kiln Dust, Environmental Geotechnics. Published Online: December 12, 2016 doi:10.1680/jenge.15.00074 | en_US |
dc.identifier.uri | http://hdl.handle.net/10222/72623 | |
dc.description.abstract | This paper presents the results of a laboratory study that evaluated the geotechnical and geoenvironmental properties
of a manufactured aggregate derived from cement kiln dust (CKD). The aggregate manufacturing process involves
accelerated carbonation technology (ACT), has been used to treat contaminated soils at trial scale. The process operates
at commercial scale in the UK, producing aggregates from thermal residues. The ACT process relies on the accelerated
reaction of carbon dioxide with the calcium oxide in the CKD material in the presence of water. No additional binder
was used in this study, relying solely instead on the formation of carbonate to form the aggregate. In this paper, the
aggregate manufacturing process is briefly described. To explore future potential construction applications of the
aggregate, several geotechnical test results are used to assess strength and durability (i.e. individual particle strength,
internal shear strength of the particle assemblage, wet–dry testing, freeze–thaw testing). Screening tests on the
aggregate’s geoenvironmental characteristics are discussed (metal leaching, dissolved heavy metal adsorption and
hydraulic conductivity) to assess potential uses further. It is shown that the aggregate studied has adequate properties
for a variety of construction applications, but is unsuitable for use in freezing and thawing environments. | en_US |
dc.language.iso | en | en_US |
dc.publisher | Institute of Civil Engineers Publishing | en_US |
dc.relation.ispartof | Environmental Geotechnics | en_US |
dc.title | Manufactured aggregate from cement kiln dust | en_US |
dc.type | Text | en_US |