Abstract
The amount of coal ash has been increasing and development of the effective use has been urgently needed. Authors have been developping the production methods of concrete mixed with coal ash and metal slag. Laboratory tests show that the optimum mix design can be determined from the vibrating compaction energy and physical properties. The present study includes site placing tests which were conducted in order to confirm the applicability of coal ash to concrete of wave dissipating blocks. The preliminary laboratory tests were carried out to investigate the consistency, compactability, and duability of coal ash concrete. From the test results, the optimum mix design method of concrete mixed with coal ash and the compacting method were evaluated.
