Production and practical application of mechanically activated fly ash-based binding material

Abstract

In this paper 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 forroad construction. Furthermore, present study deals with the comparison of the mechanical activation effect on the pozzolanic activity of deposited (brown coal) and recent (lignite) fly ash. Experimental results support the conclusion that the obtained binding material is suitable for construction of road bedding.