DE202016102824U1 - Composite material for the production of lightweight filler and its production method - Google Patents

Abstract

A plastic composite material for the production of granulated light filler, which pulp or wet waste paper in an amount of 43 wt.% To 62 wt.%, 3 wt.% To 30 wt.% Water, 12 wt.% To 35 wt.% Cement, to to 4% by weight of bentonite, up to 1% by weight of calcium stearate or other salts of fatty acids and up to 0.5% by weight of surfactants.

Description

The technical solution concerns the field of construction, specifically building materials and fillers.

At the present time, it is common to use in construction as a filler for concrete, mortar and dry mix most common natural materials such as sand and gravel or crushed rock. Concrete and mortar are mixed directly at the construction site, or brought to the construction site prepared in advance. Dry mixtures are mixed directly at the construction site. In addition, various lightweight fillers are available to the market, which differ in composition, granulometry, bulk density, specific mass, strength, water absorption, thermal conductivity coefficients and other properties as well as in price. These lightweight fillers are on the market for. B. under the name expanded perlite, Ekostyren, Liapor, Poraver u. a. sold. The disadvantage of these existing materials is that they do not fully enable the use of ecological recyclable materials and their price is relatively high.

The present solution substantially eliminates the disadvantages of commonly used materials. The core of the solution is a plastic composite material for the production of granulated light filler, in which 43 to 62 vol.% Of waste paper pulp or wastepaper from waste paper, 3 to 30 vol.% Of water, 12 to 35 vol.% Of cement, 0 to 4 vol.% Of bentonite, 0 to 1 vol.% Of calcium stearate (or other salts of fatty acids) and 0 to 0.5 vol.% Of surfactants are formed.

The properties of the basic mixture and also the properties of the light filler are further enhanced by the addition of slaked lime, gypsum with the possibility of partial or total substitution of cement, microsilica, electricity fly ash and metakaolin and possibly water glass in the mass up to 40% of the cement. The workability or improvement of the plasticity of the base mixture in the granulation can be improved by the addition of plasticizers, stabilizers (thickeners) of organic or inorganic origin in the amount of 0.1 to 1% of the mass.

The plastic material for the subsequent production of the granulated light filler after this solution uses recyclable waste paper or pulp paper sludge. The recyclable waste paper is mixed with water and subsequently fiberized into a homogenous pulp. The plastic is made by the addition of individual components to the pulp paper sludge, resp. to the shredded moistened paper, and prepared by subsequent homogenization. The homogeneous plastic is dosed into the granulation plant, where a wet granulate of different fractions of about 2 to about 16 mm is formed. The granules are subsequently dried to a constant moisture content. After drying, it is used as a lightweight filler for the production of building materials.

realization examples

example 1

Ground and moistened waste paper is shredded. The plastic mixture is prepared by mixing and subsequent homogenization of the following components: Component: % Vol. Frayed wet paper (22.16%) 42.40 Cement CEM I 42.5R Holcim 25.90 microsilica 1.24 Bentonite 130 3.89 water 26.57

This mixture of plastic consistency was pressed through the die of the granulator, where a granulate with the diameter of 2 to 14 mm was prepared.

Essential properties of the granules: Raw weights, compacted 1268 kg / m3 Bulk density - wet granules 695 kg / m3 Bulk density - dry granules 379 kg / m3

Example 2

Ground and moistened waste paper is shredded. The plastic is prepared by mixing and subsequent homogenization of the following components: Component: % Vol. Frayed wet paper (22.16%) 61.22 Cement CEM I 42.5R Holcim 30.61 microsilica 1.24 Bentonite 130 4.63 calcium stearate 0.49 water 3.05

This mixture of plastic consistency was pressed through the die of the granulator, where a granulate with the diameter of 2 to 16 mm was prepared.

Essential properties of the granules: Raw weights, compacted 1348 kg / m3 Bulk density - wet granules 750 kg / m3 Bulk density - dry granules 412.5 kg / m3

Example 3

The plastic is prepared by mixing and subsequent homogenization of the following components: Component: % Vol. Pulp paper sludge (51.2%) 52,20 Cement CEM III / A 32,5N Vác 23.54 calcium stearate 0.20 Microporan (surfactant) 0.52 water 23.54

This mixture of plastic consistency was pressed through the die of the granulator, where a granulate with the diameter of 2 to 4 mm was prepared.

Essential properties of the granules: Raw weights, compacted 1345 kg / m3 Bulk density - wet granules 822 kg / m3 Bulk density - dry granules 550 kg / m3

Example 4

The plastic is prepared by mixing and subsequent homogenization of the following components: Component: % Vol. Pulp paper sludge (51.0%) 51,40 Cement CEM III / A 32,5N Vác 15.42 plaster 6.00 calcium stearate 0.22 Microporan (surfactant) 0.48 water 26.48

This mixture of plastic consistency was pressed through the die of the granulator, where a granulate with the diameter of 2 to 4 mm was prepared.

Essential properties of the granules: Raw weights, compacted 1312 kg / m3 Bulk density - wet granules 805 kg / m3 Bulk density - dry granules 535 kg / m3

Example 5

The plastic is prepared by mixing and subsequent homogenization of the following components: Component: % Vol. Pulp paper sludge (50.99%) 50.13 Cement CEM III / A 32,5N Vác 6.23 slaked lime 12.40 calcium stearate 0.24 Microporan (surfactant) 0.55 water 30.45

This mixture of plastic consistency was pressed through the die of the granulator, where a granulate with the diameter of 2 to 4 mm was prepared.

Essential properties of the granules: Raw weights, compacted 1258 kg / m3 Bulk density - wet granules 756 kg / m3 Bulk density - dry granules 498 kg / m3

Example 6

The plastic is prepared by mixing and subsequent homogenization of the following components: Component: % Vol. Pulp paper sludge (51.2%) 50.12 Cement CEM III / A 32,5N Vác 22,90 calcium stearate 0.19 Microporan (surfactant) 0.48 Walocel MKX 15000 PP20 0.05 water 26.26

This mixture of plastic consistency was pressed through the die of the granulator, where a granulate with the diameter of 2 to 4 mm was prepared.

Essential properties of the granules: Raw weights, compacted 1315 kg / m3 Bulk density - wet granules 807 kg / m3 Bulk density - dry granules 530 kg / m3

Example 7

The plastic is prepared by mixing and subsequent homogenization of the following components: Component: % Vol. Pulp paper sludge (51.2%) 49.32 Cement CEM III / A 32,5N Vác 22.67 calcium stearate 0.19 Microporan (surfactant) 0.47 Tylovis SE 7 0.12 water 27.23

This mixture of plastic consistency was pressed through the die of the granulator, where a granulate with the diameter of 2 to 4 mm was prepared.

Essential properties of the granules: Raw weights, compacted 1299 kg / m3 Bulk density - wet granules 796 kg / m3 Bulk density - dry granules 515 kg / m3

Example 8

The plastic is prepared by mixing and subsequent homogenization of the following components: Component: % Vol. Pulp paper sludge (51.2%) 52,60 Cement CEM III / A 32,5N Vác 25.54 calcium stearate 0.26 Microporan (surfactant) 0.58 Stachement 2000 plasticizer 0.15 water 20.87

This mixture of plastic consistency was pressed through the die of the granulator, where a granulate with the diameter of 2 to 4 mm was prepared.

Essential properties of the granules: Raw weights, compacted 1387 kg / m3 Bulk density - wet granules 856 kg / m3 Bulk density - dry granules 578 kg / m3

The lightweight composite granules of various fractions with a diameter of about 2 to about 16 mm can be used in construction for the production of various lightweight structural elements such. As Baulöcken, noise barriers and the filling of light roof screeds, in housing, lightweight concrete and plaster. Next, this material z. B. are used as heat and Schalldämmschüttung of ceilings and floors. Benefits of using the lightweight composite granules are, besides a relatively low density and heat and acoustic insulation properties, also increased retention of water with a significant reduction in the formation of shrinkage cracks when ripening of building materials and increased fire and frost resistance thanks to built-in pulp microfibers. The advantage over the lifetime is the reduction in water capillarity and water absorption. It is also the application of finer fractions intended as an absorbent in oil spills.

Claims (4)

A plastic composite material for the production of granulated light filler, which pulp or wet waste paper in an amount of 43 wt.% To 62 wt.%, 3 wt.% To 30 wt.% Water, 12 wt.% To 35 wt.% Cement, to to 4% by weight of bentonite, up to 1% by weight of calcium stearate or other salts of fatty acids and up to 0.5% by weight of surfactants. Plastic composite material for the production of granulated light filler according to claim 1, characterized in that it contains slaked lime and / or gypsum, which can replace the cement completely or partially, furthermore microsilica and / or electricity fly ash and / or metakaolin and / or water glass, wherein water glass in an amount of up to 40 wt.% Of the respective amount of cement is contained. Plastic composite material for the production of a granulated light filler according to claim 1, characterized in that it contains plasticizers and / or stabilizers, in each case of organic or inorganic origin, in a total amount of 0.1% by weight to 1.0% by weight. Apparatus for producing a Kunststoffwerkverbundstoffes for the production of a granulated light filler for building materials according to claim 3, characterized in that components of Kunststoffwerkverbundstoffes mixed and homogenized and then transferred to a granulation in which plasticizers and stabilizers of organic or inorganic origin are added and the resulting Granules are dried.