Stabilised foam clay material with high performance thermal insulation properties

The paper presents the main results of a research project on the stabilization of foamed clay with a cold-setting binder named geopolymer. In a first step, the components of the material system were defined (model system)to determine the influence of the binder on the stability of the clay suspensions and foamed clay and on the strength of the dried and fired specimens. The hardening of the known foam clay composition was then proven. Additionally, the influence of a single addition of bloating glass granulate on the strength of the specimens was investigated. An alternative aim of this project was the determination of the property profile of insulating material prepared only with the cold-setting binder and bloating glass granulate.