"Hikaru Tanaka,Winarto Kurniawan,Keisuke Matsukawa,Hirofumi Hinode","Study on Cement-Free Concrete Using Fly Ash","5th Seminar Workshop on the Utilization of Waste Materials",,,,,,2017,Sept. "Hikaru Tanaka,Keisuke Matsukawa,Cheng Yi,Winarto Kurniawan,Nobuaki Otsuki,Hirofumi Hinode","CHARACTERISTICS OF SEAWATER-MIXED CONCRETE MADE OF CEMENT WITH VARIOUS REPLACEMENT RATIO OF FLY ASH","2016 Seminar Workshop on the Utilization of Waste Materials","Seminar Workshop on the Utilization of Waste Materials",,,," A6",2016,Sept.