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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/5117

Title: Evaluation of Pozzolanic activity of some clays in Ghana
Authors: Momade, Z. G
Atiemo, E.
Issue Date: 2004
Publisher: Journal of Science and Technology
Citation: Journal of Science and Technology, Vol. 24 No. 1, 2004 pp 76-83
Abstract: A study of pozzolanic activity of four Ghanaian clays is presented. The moisture content, particle size distribution, and the chemical composition of clays were determined. X-ray diffractometric and thermal analysis were also performed to determine the mineralogical composition. Calcinations of the clays were carried out at different temperatures between 600-1000°C and the pozzolanas produced used to replace 20% Portland cement by mass in mortars. Compressive strengths of 1:3 pozzolana cement mortar cubes at 28 days were determined. The values obtained showed that Asokwa (AS) and Mankesim (MN) clay samples become highly pozzolanic at 800°C whilst Hwereso (HW) and Nkonsia (NK) clays had their optimum calcination at 900°C and 600°C respectively. The compressive strengths were higher than the 24.1 N/mm2 minimum standard set for concrete and general construction.
Description: Article published in the Journal of Science and Technology, Vol. 24 No. 1, 2004 pp 76-83
URI: http://hdl.handle.net/123456789/5117
ISSN: 08550395
Appears in Collections:Journal of Science and Technology 2000-

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