Non-metallic materials as aggregate for building materials; building materials, not of metal, with embedded micro hollow spheres or foam particles made of perlite, glass, ceramics or other non-metallic materials; building materials, not of metal, in particular perlite, glass or ceramic-based, expanded additives for cement and lime-bound building materials, for example for deep-hole cementing; cement; mortar for building, namely, masonry mortar; plaster; screeds; mineral putties as surfacing m...