Title: CaO-LOI classification system for cement kiln dust
Author: Charles E. Pierce; Rucker J. Williams
Civil and Environmental Engineering, University of South Carolina, Columbia, 29208 South Carolina, USA
Savannah River Nuclear Solutions, LLC, Savannah River Site, Aiken, SC 29808, USA
Journal: Int. J. of Environment and Waste Management, 2012 Vol.10, No.2/3, pp.133 - 149
Abstract: Cement Kiln Dust (CKD), a residual of cement production, has been used effectively as a cement replacement, but there is a lack of guidance for its appropriate selection and performance in specific engineering applications. Since CKD is not a controlled product, the chemical composition and material properties differ from source to source like coal fly ash. This paper presents a dual-letter classification system that identifies high or low lime (CaO) content and Loss On Ignition (LOI), based on a review of samples from 32 cement plants. Chemical and physical properties of CKD samples representing four classifications are evaluated.
Keywords: CKD; cement kiln dust; coal fly ash; calcium oxide; CaO; lime; LOI; loss on ignition; fineness; setting time; cement replacement; cement and concrete industries; green construction; waste management.
Available online 01 Aug 2012