Abstract
This paper concerns geotechnical utilization of coal ash. First, definition and evaluation method of consistency for coal ash is proposed based on laboratory investigation. Condition of coal ash depending on amount of mixed water is classified into three categories and the two boundaries are defined based on knowledge of ceramics engineering and concrete engineering. These boundaries are evaluated easily by conducting the fall com test with 20g com. Its application for estimating mechanical properties is also examined. Initial void ratio and compression index of coal ash specimens prepared by water sediment method correlate closely with index consisted with the proposed consistency limits. Proposed evaluation method of consistency and the application for estimating of mechanical property can be useful in the case of using coal ash as reclamation material.
