EXPERIMENT STUDY ON PROPERTIES OF MORTAR AND CONCRETE CONTAINING MOLTEN SLAG FROM INTEGRATED COAL GASIFICATION COMBINED CYCLE AS FINE AGGREGATE

Abstract

IGCC is a highly efficient power generating method combining a steam turbine and a gas turbine. However, it is necessary to establish effective utilization of coal gasification molten slag discharged from IGCC in order to promote the IGCC technology. In this paper, it is investigated the fresh properties and hardened properties of mortar and concrete containing the coal gasification molten slag as fine aggregate. As for the result, in comparison with the mortar and concrete using conventional fine aggregate, it is confirmed that the fluidity improves, the bleeding increases a little, the compressive strength and bending strength decrease slightly and the drying shrinkage much reduces as containing ratio of increases. As a result, it is found the possibility that the coal gasification molten slag is usable as fine aggregate for mortar and concrete.