RO201600016U2 - Composite material for manufacturing light filler - Google Patents

Abstract

The invention relates to a plastic composite intended for manufacturing a filler as an additive to construction materials. According to the invention, the composite material comprises 43...62% cellulosic pulp or wet paper waste, 3...30% water, 12...35% cement, up to 4% bentonite, up to 1% calcium stearate and up to 0.5% usual surface-active agents, the percentage by expressed by mass.

Description

Composite material for light filler fabrication Technical field

The technical solution refers to the construction field, specifically to building materials and fillers.

The state of the art currently in the construction industry as a building material with a filling function for concrete, mortar and dry mixes is usually the use of natural materials, such as sand and gravel or crushed stone. Concrete and mortar are mixed directly at the site of construction, respectively pre-prepared on site. Dry mixtures are mixed directly into the site. Moreover, various lightweight fillers are available on the market, which differ in composition, granulometry, bulk density, specific mass, strength, water absorption, thermal conductivity coefficients, other properties, and also by their price . These lightweight fillers are sold on the market, for example, among others under the name perlite, expanded, ecostirene, liapor, poraver. The disadvantage of these materials so far is that they do not allow the full use of environmentally friendly materials and their price is relatively high.

The essence of the technical solution

This solution substantially eliminates the disadvantages of commonly used materials. The essence of the solution is a composite plastic material for the production of lightly granulated filler material, wherein 43 to 62% by weight are cellulose pulp or paper scraps, 3 to 30% by weight of water, 12 to 35% by weight of cement, 0 to 4% by weight of bentonite, 0 to 1% by weight of calcium stearate (or other salts of fatty acids) and 0 to 0.5% by weight of the surfactants.

The properties of the base mixture and also the properties of the light filler are further improved by the addition of hydrated lime which can replace the partial or complete cement, microsilica, fly ash and metacholine, in which case more preferably soluble glass is contained in an amount of 40% by weight of cement. The workability and / or amelioration of the plasticity of the base mixture to the granulation can be improved by adding plasticizers, stabilizers (thickeners) of organic or inorganic origin at 0.1 to 1% by weight.

The plastic material for subsequent fabrication of the lightly granulated filler material according to this solution uses waste paper or cellulose pulp. The waste paper is mixed with water and then defibrated resulting in a homogeneous pulp. The plastic material is prepared by adding the individual components to the pulp of cellulose paper, respectively in the defatted moist paper, and by further homogenization. The plastics material is dosed in the granulation plant, resulting in a wet granulate of different fractions of approx. 2 to approx. 16 mm. The granulate is then dried to a constant moisture content. After drying, it is used as a light filler material for the manufacture of building materials.

Examples of embodiments

Example 1

The waste paper that is milled and damp is defibrated. For the manufacture of composite material, the following components are homogeneously mixed together.

Components:% wet weight defibrated paper (22.16%) 42.40 cement CEM I 42.5R Holcim 25.90

1.24 bentonite 130 3.89 water 26.57

This mixture has a plastic consistency and is pressed through the mold of a granulating plant where a granulate is produced whose particles have diameters of 2 mm to 14 mm.

Essential properties of the granulate: Bulk density 1268 kg / m3 Bulk density - wet granulate 695 kg / m3 Bulk density - Dry granulate 379 kg / m3

Example 2

The waste paper that is milled and damp is defibrated. For the manufacture of composite material, the following components are homogeneously mixed together:

Components:% by weight wet defibrated paper (22.16%) 61.22 cement CEM I 42.5R Holcim 30.61

1.24 bentonite 1.30 4.63 calcium stearate 0.49 water 3.05

This mixture has a plastic consistency and is pressed through the mold of a granulating plant where a granulate is produced whose particles have diameters of 2 mm to 16 mm.

Essential properties of the granulate: bulk density, compacted 1348 kg / m3 bulk density - wet granulate 750 kg / m3 bulk density - dry granulate 412.5 kg / m3

Example 3

For the manufacture of composite material, the following components are homogeneously mixed together:

Components:% by weight cellulose pulp (51.2%) 52.20 cement CEM III / A 32.5N VAC 23.54 calcium stearate 0.20 microporan (surfactant) 0.52 water 23.54

This mixture has a plastic consistency and is pressed through the mold of a granulation plant where a granulate is produced whose particles have diameters of 2 mm to 4 mm.

Essential properties of the granulate: bulk density, compacted 1345 kg / m3 bulk density - wet granulated 822 kg / m3 Bulk density - dry granulate 550 kg / m3

Example 4

For the manufacture of composite material, the following components are homogeneously mixed together:

Components:% by weight cellulose pulp (51.0%) 51.40 cement CEM III / A 32.5N VAC 15.42

6.00 calcium stearate 0.22 microporane (surfactant) 0.48 water 26.48

This mixture has a plastic consistency and is pressed through the mold of a granulation plant where a granulate is produced whose particles have diameters of 2 mm to 4 mm.

Essential properties of the granulate: bulk density, compacted 1312 kg / m3 bulk density - wet granulate 805 kg / m3 bulk density - dry granulate 535 kg / m3

Example 5

For the manufacture of composite material, the following components are homogeneously mixed together:

Components:% by weight cellulose pulp (50.99%) 50.13 cement CEM III / A 32.5N Viscose 6.23

12.40 calcium stearate 0.24 microporan (surfactant) 0.55 water 30.45

This mixture has a plastic consistency and is pressed through the mold of a granulation plant where a granulate is produced whose particles have diameters of 2 mm to 4 mm.

Essential properties of the granulate: Bulk density, bulk density 1258 kg / m3 Bulk density - wet granulation 756 kg / m3 Bulk density - Dry granulate 498 kg / m3

Example 6

For the manufacture of composite material, the following components are homogeneously mixed together:

Components:% by weight cellulose pulp (51.2%) 50.12 cement CEM III / A 32.5N VAC 22.90 calcium stearate 0.19 microporane (surfactant) 0.48

Walocel MKX 15000 PP20 0,05 water 26,26

This mixture has a plastic consistency and is pressed through the mold of a granulation plant where a granulate is produced whose particles have diameters of 2 mm to 4 mm.

Essential properties of the granulate: bulk density, compacted 1315 kg / m3 bulk density - wet granulated 807 kg / m3 bulk density - dry granulate 530 kg / m3

Example 7

For the manufacture of composite material, the following components are homogeneously mixed together:

Components:% by weight cellulose pulp (51.2%) 49.32 CEM III / A 32.5N cement 22.67 calcium stearate 0.19 microporane (surfactant) 0.47

Tylovis SE 7 0.12 water 27.23

This mixture has a plastic consistency and is pressed through the mold of a granulation plant where a granulate is produced whose particles have diameters of 2 to 4 mm.

Essential properties of the granulate: bulk density, compacted 1299 kg / m3 bulk density - wet granulate 796 kg / m3 Bulk density - dry granulate 515 kg / m3

Example 8

For the manufacture of composite material, the following components are homogeneously mixed together:

Components:% by weight cellulose pulp (51.2%) 52.60 cement CEM III / A 32.5N VAC 25.54 calcium stearate 0.26 microporan (surfactant) 0.58 plasticizer Stachement 2000 0.15 water 20 87

This mixture has a plastic consistency and is pressed through the mold of a granulation plant where a granulate is produced whose particles have diameters of 2 mm to 4 mm.

Essential properties of the granulate: bulk density, compacted 1387 kg / m3 bulk density - wet granulate 856 kg / m3 bulk density - dry granulate 578 kg / m3

Industrial applicability

Granular composite of slightly different fractions with a diameter of approx. 2 to approx. 16 mm can be used in the field of construction for the manufacture of various lightweight structural elements, such as building blocks, soundproofing walls, such as lightweight ceiling paneling, dwelling construction, lightweight concrete and plaster. In addition, this material can be used for example as a thermal and acoustic insulation of ceilings and floors. The advantage of using lightweight composite granules is also, in addition to relatively low density and thermal and acoustic insulation properties, increased retention of substantially reduced crack formation at building materials and fire resistance and frost resistance embedded cellulose microfibers. The advantage in terms of durability is the reduction of water capillary and water absorption. Also, the use of finer fractions as absorption material is provided for oil accidents.

Claims (4)

claims 1. Plastic composite material for manufacturing a slightly granular filler material provided as an additive for building materials comprising a cellulose pulp or a wet paper waste in an amount of 43% by weight to 62% by weight, water in an amount of 3 wt% to 30 wt%, cement in an amount of 12 wt% to 35 wt%, bentonite in an amount of up to 4 wt%, calcium stearate or other salts of fatty acids in an amount of up to 1% by weight and surfactants in an amount of up to 0.5% by weight. 2. Plastic composite material for the manufacture of a slightly granular filler material provided as an additive for building materials according to claim 1, characterized in that the base compound additionally contains hydrated limestone and / or gypsum, which can replace cement completely or partially, microsilica, electric fly ash and metacaolin, wherein in addition preferably 40% by weight of soluble glass is contained in the cement. Plastic composite material for the manufacture of a slightly granular filler material provided as an additive for building materials according to claim 1, characterized in that the base compound additionally contains plasticizers and / or stabilizers of organic or inorganic origin in an amount 0.1% by weight to 1% by weight. Plastic composite material for the manufacture of a slightly granular filler material provided as an additive for building materials according to claim 3, characterized in that the components of the material are mixed and homogenized and then metered in a granulation plant in which addition of plasticizers and stabilizers of organic or inorganic origin, and the resulting wet granulate is dried.