Cellglas is a Swedish company, which works with cellular glass. Quite fast, they changed for GLAPOR cellular glass, because this is made for 100% from recycled glass and available in larger boards. They are specialized in using cellular glass under the floor on a sand bed. This is nicely shown in the following video.
The cellular glass is used as thermal insulation of concrete plate (bottom and sides) and as formwork for pooring the concrete.
But an even more inventive concept is Tversted House, which is built without concrete or steel. After use, it can be simple unmounted and the materials reused. This is shown in following document.
The architects Jonas Aarsø and Alexandra Nikolova use only GLAPOR cellular glass and wood in the foundations. The end result is a nice and ecologic building.
BELGLAS BV 