1. Mun KJ. A study on using expanded clay and organic sludge for manufacturing of super lightweight aggregate (in Korean). Proceedings of the Conference of the Korea Society of Waste Management, Seoul, Korea. May 2002; p. 243–46.
2. Manufacturing of sintered lightweight aggregate using paper mill sludge ash (in Korean);Soh;J Korean Concr Inst,1991
3. Riley, C.M., ‘Relation of chemical properties to the bloating of clays’, Minnesota Geological Survey, Summary Report No. 5, Minnesota, 1950: 121–28.
4. The science of clay minerals (in Korean);Mun,1996
5. Effect of lightweight fly ash aggregate microstructure on the strength of concretes;Wasserman;Cem Concr Res,1997