Mechanical Activation of Fly Ash and Its Utilization as Individual Binding Material
In a first stage of our investigations material properties of fly ash (three acidic and one alkaline type originating from combustion of various age coal) obtained from four various dumps have been characterized. In a next step systematic mechanical activation experiments-grinding-and measurements have been performed with various ashes to establish relations between grinding fineness (specific surface area), specific work input demand of grinding and activity. In a third phase utilization of a mixture of mechanically activated fly ash and lime for producing an independent binding composition has been assessed involving determination of interrelationship(s) between the degree of activation of fly ash, the lime concentration and the resultant strength of the obtained concrete. Finally, pilot size experiments were conducted and a test road section was built to explore possibilities for the production of suitable binding composition from the mixture of fly ash and lime as well as the applicability such mixture for road construction.After summarizing major achievements of the first and second stages of the work (history) the present study deals with the research conducted in stages three and four.Experimental results support the conclusion that the obtained binding material is suitable for construction of road bedding.
Fly ash Fine grinding Lime Strength test Pozzolanic activity
B. Cs(o)ke G.Mucsi Cs. Sík
Institute of Raw Material Preparation and Environmental Processing, University of Miskolc,Miskolc-Egyetemváros, Hungary H-TPA Innovation and Quality Investigations Ltd., Budapest, Hungary
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
3262-3269
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）