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OwnerHolger Godeke, Achim Witchler +1inventors
InventorsHolger Godeke, Achim Witchler, Norbert Konig
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The invention relates to a building block and a method for producing the same, which has a reduced mass by comparison with conventional building blocks and excellent insulating properties. The building block according to the invention consists of a lightweight material which is selected from expanded glass, pearlite, expanded clay or mixtures thereof. The lightweight material is obtained by liquid phase sintering or fusing of pre-expanded glass granulate, clay granulate, pearlite or mixtures thereof and forms a pore structure as an insulating core which is at least partially enclosed by a shell body formed from a conventional building block material. The building block is produced by an appropriate shell body being filled with the lightweight material, and the pre-expanded lightweight material, which has a residual expanding agent content of at least 0.1 mass % and is used in granulate form, being heated to above the softening temperature of the granulate, an additional volume expansion occurring and the granulate surfaces being fused.
Building block, in which a lightweight material, which has been produced by fusing of pre-expanded glass granulate, expanded clay granulate, pearlite or mixtures thereof, with a residual content of binding agent of 0.1 to 3 mass % forms a closed-pore structure as an insulating core (2) with a bulk density ≦600 kg/m3, is enclosed at least partially by a shell body (1) formed from a conventional building block material.
Dependencies are inferred from the claim text.