CN104446607A - Heat-insulating pressure-resisting air-added brick and preparation method thereof - Google Patents

Abstract

The invention discloses a heat-insulating pressure-resisting air-added brick which is prepared from the following raw materials in parts by weight: 8-12 parts of silica fume, 0.5-0.8 part of vanisPerse-A, 0.5-0.7 part of superfine barium sulfate, 0.2-0.5 part of tetraethoxysilane, 0.5-0.9 part of gamma-aminopropyl triethoxysilane, 7-9 parts of rock wool, 0.5-0.7 part of polytetrafluoroethylene micro-powder, 10-12 parts of gypsum, 50-60 parts of fly ash, 8-9 parts of air-added aluminum powder, 11-14 parts of cement, 6-8 parts of copper ore tailing sand, 11-14 parts of quick lime, 8-10 parts of modified walnut shell and a proper amount of water. The air-added brick disclosed by the invention is excellent in pressure resistance, fracture resistance, permeation resistance, corrosion resistance, impact resistance and wear resistance and is doubled in durability in comparison with a common air-added brick especially in severe environment such as pollution and corrosion of chloride, corrosion of sulfate and high humidity; due to the added rock wool, the air-added brick is good in heat insulation property and energy is saved; due to use of the modified walnut shell, the air-added brick is enhanced in the heat insulation effect, good in water resistance, reduced in weight, improved in seismic resistance and also good in water reduction effect.

Description

A kind of heat insulation pressure-resistant aerated bricks and preparation method thereof

Technical field

The invention belongs to brick field, particularly relate to a kind of heat insulation pressure-resistant aerated bricks and preparation method thereof.

Background technology

Aerated bricks is also called air-entrained concrete building block, application very extensive, is mainly used in the load-bearing wallings such as the materials for wall in machinery plant and covil construction, infilled wall, floor and roof boarding and non-bearing material and filling enclosure wall around.

Current aerated bricks has become the leading product of building material industry, and country progressively prohibits the use clay solid brick, is instead exactly air-entrained concrete building block gradually, autoclaved brick.

Aerated bricks have lightweight, thermal and insulating performance good, shock resistance is strong, good processability, have certain high thermal resistance, good, the adaptable feature of sound-proofing properties, can according to the different starting material in locality, different condition is carried out amount body and is surely made, raw material sources is extensive, river sand, flyash, ore in sand form etc. can be selected, suit measures to local conditions, can be salvaged, environmental, really turn waste into wealth.

But along with the development of building trade, buildings is more and more higher, moulding is more and more peculiar, require all to increase to the intensity, density, shrinkage value, frost resistance etc. of aerated bricks, improving constantly in addition along with people's living standard, also more and more higher to the requirement of environment, there is higher requirement to the heat-insulating property of buildings, sound absorption qualities, radioactivity, even require that buildings has the performance of body health benefits, therefore as required, the aerated bricks developing excellent performance is more imperative.

Summary of the invention

The object of the present invention is to provide a kind of heat insulation pressure-resistant aerated bricks and preparation method thereof, this aerated bricks has excellent resistance to compression, anti-folding, impervious, anticorrosion, shock resistance and wear resisting property, particularly under the severe environment such as villiaumite system erosion, sulphate attack, high humidity, weather resistance doubles than common aerated bricks, and heat-proof quality is good, save energy.

Technical scheme of the present invention is as follows:

A kind of heat insulation pressure-resistant aerated bricks, is characterized in that being made up of the raw material of following weight part: silicon ash 8-12, wooden sodium 0.5-0.8, ultra-fine barium sulfate 0.5-0.7, tetraethoxy 0.2-0.5, γ-aminopropyl triethoxysilane 0.5-0.9, rock wool 7-9, ptfe micropowder 0.5-0.7, gypsum 10-12, flyash 50-60, aerating aluminium powder 8-9, cement 11-14, copper ore tailings 6-8, unslaked lime 11-14, modification nut-shell 8-10, water are appropriate;

Described modification nut-shell is made up of the raw material of following weight part: nut-shell 14-17, slag wool 1-2, water glass 0.2-0.3, gas phase aluminium sesquioxide 0.4-0.5, SULPHUR POWDER 0.2-0.3, epoxy acrylate 0.8-1, vinyl cyanide 0.3-0.5, Rizinsan K2 A2 0.2-0.3, trolamine 0.1-0.2, SILICA FUME 1-2, multicellular glass powder 1-2, high-efficiency water-reducing agent of poly-carboxylic acid 2-3, ammonium persulphate 0.08-0.1, sewer oil 2-3; Making method is: walnut shell flour is broken into 100-200 order particle, spray into Rizinsan K2 A2, sewer oil while stirring, mix rear placement 2-3 hour, mix with slag wool, water glass, gas phase aluminium sesquioxide, SULPHUR POWDER, epoxy acrylate, vinyl cyanide, SILICA FUME, multicellular glass powder again, be heated to 75-80 DEG C, add other remaining components again, dispersion grinding 30-40 minute, to obtain final product.

The preparation method of described heat insulation pressure-resistant aerated bricks, is characterized in that comprising the following steps:

(1) by cement, copper ore tailings, unslaked lime, gypsum, flyash mixing, send into grinding in ball grinder and become 100-200 order particle, then mix with the composition except aerating aluminium powder, be that 0.57-0.58 adds water by ratio of water to material, stir, then add aerating aluminium powder, stir and obtain slurry;

(2) slurry that (1) step obtains is poured in mould, obtain brick idiosome;

(3) brick idiosome is put into steam-cured still to vacuumize, then in 1.7-1.9 hour, pass into steam equably, make the temperature of steam-cured indoor rise to 170-180 DEG C, pressure reaches 11-13MPa, keeps constant 10-11 hour;

(4) let off steam equably in 1.7-1.9 hour, make the temperature of steam-cured indoor be down to less than 70 DEG C, go out still, place 28-30 days and get final product.

Beneficial effect of the present invention

Aerated bricks of the present invention has excellent resistance to compression, anti-folding, impervious, anticorrosion, shock resistance and wear resisting property, and particularly under the severe environment such as villiaumite system erosion, sulphate attack, high humidity, weather resistance doubles than common aerated bricks; And by adding rock wool, make aerated bricks heat-proof quality good, save energy; By using modification nut-shell, enhancing effect of heat insulation, water-tolerant, alleviating weight, adding anti-seismic performance, water-reducing effect is good simultaneously.

Embodiment

A kind of heat insulation pressure-resistant aerated bricks, is made up of the raw material of following weight part (kilogram): silicon ash 10, wooden sodium 0.6, ultra-fine barium sulfate 0.6, tetraethoxy 0.4, γ-aminopropyl triethoxysilane 0.7, rock wool 8, ptfe micropowder 0.6, gypsum 11, flyash 55, aerating aluminium powder 8.5, cement 13, copper ore tailings 7, unslaked lime 12, modification nut-shell 9, water are appropriate;

Described modification nut-shell is made up of the raw material of following weight part (kilogram): nut-shell 15, slag wool 1.5, water glass 0.2, gas phase aluminium sesquioxide 0.5, SULPHUR POWDER 0.3, epoxy acrylate 0.9, vinyl cyanide 0.4, Rizinsan K2 A2 0.2, trolamine 0.2, SILICA FUME 1.5, multicellular glass powder 1.5, high-efficiency water-reducing agent of poly-carboxylic acid 2.5, ammonium persulphate 0.09, sewer oil 2.5; Making method is: walnut shell flour is broken into 160 order particles, spray into Rizinsan K2 A2, sewer oil while stirring, mix rear placement 2.5 hours, mix with slag wool, water glass, gas phase aluminium sesquioxide, SULPHUR POWDER, epoxy acrylate, vinyl cyanide, SILICA FUME, multicellular glass powder again, be heated to 78 DEG C, add other remaining components again, dispersion grinding 35 minutes, to obtain final product.

The preparation method of described heat insulation pressure-resistant aerated bricks, comprises the following steps:

(1) by cement, copper ore tailings, unslaked lime, gypsum, flyash mixing, send into grinding in ball grinder and become 160 order particles, then mix with the composition except aerating aluminium powder, be 0.57 add water by ratio of water to material, stir, then add aerating aluminium powder, stir and obtain slurry;

(2) slurry that (1) step obtains is poured in mould, obtain brick idiosome;

(3) brick idiosome is put into steam-cured still to vacuumize, then in 1.8 hours, pass into steam equably, make the temperature of steam-cured indoor rise to 175 DEG C, pressure reaches 12MPa, keeps constant 11 hours;

(4) let off steam equably in 1.8 hours, make the temperature of steam-cured indoor be down to 70 DEG C, go out still, place 29 days and get final product.

Experimental data:

The density of this aerated bricks is 660kg/m3, refractory temperature is 696 DEG C, thermal conductivity is 0.15W/(m DEG C), adopt showerhead respectively to the thick clay tile wall of 240mm and aerating brick wall spray, clay tile wall all soaked into after 12 hours, the aerating brick wall degree of depth that seeps water after spraying 72 hours is 80mm, and ultimate compression strength is 6.4Mpa, sound absorption coefficient 0.3.

Claims (2)

1. a heat insulation pressure-resistant aerated bricks, is characterized in that being made up of the raw material of following weight part: silicon ash 8-12, wooden sodium 0.5-0.8, ultra-fine barium sulfate 0.5-0.7, tetraethoxy 0.2-0.5, γ-aminopropyl triethoxysilane 0.5-0.9, rock wool 7-9, ptfe micropowder 0.5-0.7, gypsum 10-12, flyash 50-60, aerating aluminium powder 8-9, cement 11-14, copper ore tailings 6-8, unslaked lime 11-14, modification nut-shell 8-10, water are appropriate;

Described modification nut-shell is made up of the raw material of following weight part: nut-shell 14-17, slag wool 1-2, water glass 0.2-0.3, gas phase aluminium sesquioxide 0.4-0.5, SULPHUR POWDER 0.2-0.3, epoxy acrylate 0.8-1, vinyl cyanide 0.3-0.5, Rizinsan K2 A2 0.2-0.3, trolamine 0.1-0.2, SILICA FUME 1-2, multicellular glass powder 1-2, high-efficiency water-reducing agent of poly-carboxylic acid 2-3, ammonium persulphate 0.08-0.1, sewer oil 2-3; Making method is: walnut shell flour is broken into 100-200 order particle, spray into Rizinsan K2 A2, sewer oil while stirring, mix rear placement 2-3 hour, mix with slag wool, water glass, gas phase aluminium sesquioxide, SULPHUR POWDER, epoxy acrylate, vinyl cyanide, SILICA FUME, multicellular glass powder again, be heated to 75-80 DEG C, add other remaining components again, dispersion grinding 30-40 minute, to obtain final product.

2. the preparation method of heat insulation pressure-resistant aerated bricks according to claim 1, is characterized in that comprising the following steps:

(1) by cement, copper ore tailings, unslaked lime, gypsum, flyash mixing, send into grinding in ball grinder and become 100-200 order particle, then mix with the composition except aerating aluminium powder, be that 0.57-0.58 adds water by ratio of water to material, stir, then add aerating aluminium powder, stir and obtain slurry;

(2) slurry that (1) step obtains is poured in mould, obtain brick idiosome;

(3) brick idiosome is put into steam-cured still to vacuumize, then in 1.7-1.9 hour, pass into steam equably, make the temperature of steam-cured indoor rise to 170-180 DEG C, pressure reaches 11-13MPa, keeps constant 10-11 hour;

(4) let off steam equably in 1.7-1.9 hour, make the temperature of steam-cured indoor be down to less than 70 DEG C, go out still, place 28-30 days and get final product.