This paper presents work underway by the authors to characterise the fly ash available from a coal-fired electricity plant on the west coast of Ireland and determine its suitability as a cement replacement. The experimental programme described includes X-ray diffraction (XRD) and X-ray fluorescence (XRF) analyses to evaluate the mineralogical composition and chemical properties of the ash. The XRD analysis revealed the presence of various mineral phases in the fly ash while the XRF analysis provided data on the elemental oxide composition to better understand its chemical characteristics. Initial concrete trials included measurements of the compressive and flexural strength.
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