Lightweight building material and method of producing the same
First Claim
1. A lightweight building material, comprising an additive having from 70 to 85 volume percent of expanded perlite and having bulk density from 20 to 150 g/l and grain size from 0 to 6 mm, a bonding agent structure composed of from 2.5 to 23 volume percent of water glass, and from 0.1 to 1.0 volume percent of hardener, the bonding agent structure is porous with the pore content of between 80 and 99 percent by volume, the lightweight building material having the bulk density between 40 and 200 kg/m3 and the strength between 0.01 and 0.5N/mm2.
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Abstract
A lightweight building material comprises expanded perlite as an additive and a bonding agent structure consisting of an alkalisilicate and containing pores formed by foaming and/or expansion. The pore content which results from the pore structure of the bonding agent amounts to 85 to 99% by volume, with bulk densities of 40 to 200 kg/m3, and strengths of 0.01 to 0.5 N/mm2. In a method for producing a lightweight building material mortar mixes of the following composition are used:
70 to 85% by volume of perlite (bulk density from 20 to 150 g/l. grain-size from 0 to 6 mm)
23.0 to 2.5% by volume of water-glass (38 degrees Be)
25.0 to 5.0% by volume of water
1.0 to 0.10% by volume of hardener
2.0 to 0.05% by volume of air-entrainer.
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Citations
28 Claims
- 1. A lightweight building material, comprising an additive having from 70 to 85 volume percent of expanded perlite and having bulk density from 20 to 150 g/l and grain size from 0 to 6 mm, a bonding agent structure composed of from 2.5 to 23 volume percent of water glass, and from 0.1 to 1.0 volume percent of hardener, the bonding agent structure is porous with the pore content of between 80 and 99 percent by volume, the lightweight building material having the bulk density between 40 and 200 kg/m3 and the strength between 0.01 and 0.5N/mm2.
- 5. A method for producing a lightweight building material, comprising the steps of mixing an additive having from 70 to 85 volume percent of expanded perlite and having bulk density 20 to 150 g/l and grain size from 0 to 6 mm, a bonding agent composed of 2.5 to 23 volume percent of water glass, 0.1 to 1.0 volume percent of hardener and 2.0 to 0.05 weight percent of air entrainer surfactant to produce a mortar mix, and allowing the mortar mix to set to form the building material.
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25. A lightweight building material, comprising from 70 to 85 volume percent of additive including expanded perlite and vermiculite and having bulk density from 20 to 150 g/l and grain size from 0 to 6 mm, a bonding agent structure composed of from 2.5 to 23 volume percent of water glass, and from 0.1 to 1.0 volume percent of hardener, the bonding agent structure being porous with the pore content of between 80 and 99 percent by volume, the lightweight building material having the bulk density between 40 and 200 kg/m3 and the strength between 0.01 and 0.5N/mm2.
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26. A lightweight building material, comprising from 70 to 85 volume percent of additive including expanded perlite and expanded clay and having bulk density from 20 to 150 g/l and grain size from 0 to 6 mm, a bonding agent structure composed of from 2.5 to 23 volume percent of water glass, and from 0.1 to 1.0 volume percent of hardener, the bonding agent structure being porous with the pore content of between 80 and 99 percent by volume, the lightweight building material having the bulk density between 40 and 200 kg/m3 and the strength between 0.01 and 0.5N/mm2.
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27. A lightweight building material, comprising from 70 to 85 volume percent of additive including expanded perlite and foamed glass and having bulk density from 20 to 150 g/l and grain size from 0 to 6 mm, a bonding agent structure composed of from 2.5 to 23 volume percent of water glass, and from 0.1 to 1.0 volume percent of hardener, the bonding agent structure being porous with the pore content of between 80 and 99 percent by volume, the lightweight building material having the bulk density between 40 and 200 kg/m3 and the strength between 0.01 and 0.5 N/mm2.
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28. A lightweight building material, comprising from 70 to 85 volume percent of additive including expanded perlite, vermiculite, expanded clay and foamed glass and having bulk density from 20 to 150 g/l and grain size from 0 to 6 mm, a bonding agent structure composed of from 2.5 to 23 volume percent of water glass, and from 0.1 to 1.0 volume percent of hardener, the bonding agent structure being porous with the pore content of between 80 and 99 percent by volume, the lightweight building material having the bulk density between 40 and 200 kg/m3 and the strength between 0.01 and 0.5 N/mm2.
Specification