Granular insulating and levelling material - comprising mixt. of expanded perlite and light granulate, used esp. for jointless insulation layers on floors, etc.

摘要

(A) An insulating and levelling bulk material (a) 20-35 wt.% expanded perlite of bulk density 90-130 g/l; and (b) 65-80wt.% light granulate with a bulk density of 250-600 g/l. (B) Prodn. of a jointless insulation layer on floors and the like involves (i) dry mixing the components (a) and (b); (ii) pouring and distributing the mixt. on the floor; and (iii) mechanically compacting the mixt. The expanded perlite pref. has a particle size of 0-6mm and the light granulate pref. has a particle size of 0-8mm. The light granulate may be a pumice granulate with 0.3-4mm. particle size and 360-400 g/l bulk density or a gas concrete granulate with 0.2-4mm. particle size and 360-400 g/l bulk density. The individual granules of the mixt. may be coated with a hygroscopic organic cpd.. ADVANATAGE - The material is non-toxic and non-flammable, and has good mechanical stability with good surface strength.