Abstract
JIS A 5031 has been stipulated for a use of Melt-solidified slag aggregate for concrete derived from municipal solid waste and sewage sludge. Production systems and qualities of Melt-solidified slag aggregate are firstly reported. Some properties of concrete with Melt-solidified slag aggregate are also reported from research works. Through some contents of JCI standard, TR A 0016, JIS A 5031, trends of Melt-solidified slag aggregate for concrete are described.