Abstract
Some problems of popouts were reported when municipal solid waste melt-solidified slag was used for concrete aggregates. Therefore, Japanese Industrial Standards, JIS A 5031 was revised in July 2010 to introduce information about popouts. However, there was no applicable regulation in JIS A 5031 for popouts when melt-solidified slag was used for concrete aggregates. The popout test procedure has been investigated at Japan Testing Center for Construction Materials (JTCCM) since 2009. In this report, the test results of popout and Ca solubility, which were summarized of test procedure draft at JTCCM, were reported by using the melt-solidified slag. The melt-solidified slag was generated at municipal waste gasifying and melting plants in Japan. The test result of Ca solubility was available for pre-estimating of popouts. To prevent popouts, it was confirmed that an aging treatment of melt-solidified slag was effective.
