CN103992084A - High-toughness aerated brick and making method thereof - Google Patents

Abstract

A high-toughness aerated brick is made by using the following raw materials, 8-12 parts of cement, 13-15 parts of quicklime, 8-10 parts of modified sawdust, 4-5 parts of gypsum, 60-65 parts of fly ash fly ash, 1-2 parts of polyvinyl acetate, 1-2 parts of a styrene butadiene rubber emulsion, 3-5 parts of aluminum silicate fibers, 0.4-0.6 parts of cocoanut fatty acid diethanolamide, 0.2-0.4 parts of a silicone resin polyether emulsion, 7-8 parts of aluminum paste for aerated concrete and a proper amount of water. The use of the aluminum silicate fibers makes the aerated brick have the advantages of good heat insulation performance, improved heat stability, good heat shock resistance, high compressive strength, good toughness, excellent wind erosion resistance and good machining performance; and the use of the modified sawdust enhances the heat insulation performance, reduces the weight, increases the shock resistance and realizes a good water reduction effect.

Description

A kind of high tenacity aerated bricks and preparation method thereof

Technical field

The invention belongs to brick field, relate in particular to a kind of high tenacity aerated bricks and preparation method thereof.

Background technology

Aerated bricks is also called air-entrained concrete building block, application very extensively, be mainly used in load-bearing walling and non-bearing material and the filling enclosure walls around such as materials for wall, infilled wall, floor and roof boarding in mechanical factory building and covil construction.

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

That aerated bricks has is 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 be according to the different starting material in locality, different condition comes amount body surely to make, starting material wide material sources, can select river sand, flyash, ore in sand form etc., suit measures to local conditions, can be salvaged, environmental, really turn waste into wealth.

But the development along with building trade, buildings is more and more higher, moulding is more and more peculiar, the requirements such as the intensity of aerated bricks, density, shrinkage value, frost resistance are all increased, improving constantly along with people's living standard in addition, requirement to environment is also more and more higher, and the heat-insulating property of buildings, sound absorption qualities, radioactivity are had to higher requirement, even requires buildings to have the performance of body health benefits, therefore as required, develop the aerated bricks of excellent performance more imperative.

Summary of the invention

The object of the present invention is to provide a kind of high tenacity aerated bricks and preparation method thereof, this aerated bricks good heat insulating, Heat stability is good, good thermal shock, compressive strength is high, good toughness, weather-proof ability is good, and machinability is good.

Technical scheme of the present invention is as follows:

A high tenacity aerated bricks, is characterized in that being made by the raw material of following weight part: cement 8-12, unslaked lime 13-15, modification sawdust 8-10, gypsum 4-5, flyash 60-65, polyvinyl acetate 1-2, SBR emulsion 1-2, aluminum silicate fiber 3-5, cocoanut fatty acid diethanolamide 0.4-0.6, silicone resin polyethers emulsion 0.2-0.4, aerating aluminium powder 7-8, water are appropriate;

Described modification sawdust is made by the raw material of following weight part: zirconium phosphate 2-3, sawdust 12-15, Magnesium Silicate q-agent 1-2, red phosphorus 0.4-0.7, borax 0.4-0.6, cobalt naphthenate 0.01-0.02, ethoxylated dodecyl alcohol 0.01-0.02, hydroxyethyl methylacrylate 2-3, high-efficiency water-reducing agent of poly-carboxylic acid 1-2, vinylformic acid 1-2, ammonium persulphate 0.01-0.02, zirconium nitrate 0.5-1.2, crystal whisker of gypsum 3-5, oxidized polyethlene wax 0.8-1, sewer oil 2-3; Making method is: sawdust powder is broken into 50-100 order particle, sprays into while stirring oxidized polyethlene wax, sewer oil, mix rear placement 5-7 hour, then mix with other remaining components, be heated to 75-80 ℃, dispersion grinding 30-40 minute, obtains.

The preparation method of described high tenacity aerated bricks, is characterized in that comprising the following steps:

(1) cement, unslaked lime, gypsum, flyash are mixed, send into grinding in ball grinder and become 50-100 order particle, then mix with the composition except aerating aluminium powder, by ratio of water to material, be that 0.57-0.58 adds water, stir, then add aerating aluminium powder, stir and obtain slurry;

(2) slurry (1) step being obtained is poured in mould, obtains brick idiosome;

(3) brick idiosome is put into steam-cured still and vacuumize, then in 1.7-1.9 hour, pass into equably steam, make steam-cured indoor temperature rise to 170-180 ℃, pressure reaches 11-13MPa, keeps constant 9-12 hour;

(4) in 1.7-1.9 hour, let off steam equably, steam-cured indoor temperature is down to below 70 ℃, go out still, place 28-30 days and get final product.

Beneficial effect of the present invention

Aerated bricks of the present invention, by using aluminum silicate fiber, makes aerated bricks good heat insulating, has improved thermostability, good thermal shock, and also compressive strength is high, good toughness, and weather-proof ability is good, and machinability is good; By using modification sawdust, strengthened heat-proof quality, alleviated weight, increased anti-seismic performance, water-reducing effect is good simultaneously.

Embodiment

A high tenacity aerated bricks, by following weight part (kilogram) raw material make: cement 10, unslaked lime 14, modification sawdust 9, gypsum 4.5, flyash 63, polyvinyl acetate 1.5, SBR emulsion 1.5, aluminum silicate fiber 4, cocoanut fatty acid diethanolamide 0.5, silicone resin polyethers emulsion 0.3, aerating aluminium powder 7.5, water are appropriate;

Described modification sawdust by following weight part (kilogram) raw material make: zirconium phosphate 2.5, sawdust 14, Magnesium Silicate q-agent 1.4, red phosphorus 0.6, borax 0.5, cobalt naphthenate 0.01, ethoxylated dodecyl alcohol 0.01, hydroxyethyl methylacrylate 2.5, high-efficiency water-reducing agent of poly-carboxylic acid 1.5, vinylformic acid 1.5, ammonium persulphate 0.01, zirconium nitrate 0.8, crystal whisker of gypsum 4, oxidized polyethlene wax 0.9, sewer oil 2.5; Making method is: sawdust powder is broken into 80 order particles, sprays into while stirring oxidized polyethlene wax, sewer oil, mix rear placement 6 hours, then mix with other remaining components, be heated to 78 ℃, dispersion grinding 37 minutes, obtains.

The preparation method of described high tenacity aerated bricks, comprises the following steps:

(1) cement, unslaked lime, gypsum, flyash being mixed, send into grinding in ball grinder and become 90 order particles, then mix with the composition except aerating aluminium powder, is 0.57 to add water by ratio of water to material, stirs, then adds aerating aluminium powder, stirs and obtains slurry;

(2) slurry (1) step being obtained is poured in mould, obtains brick idiosome;

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

(4) in 1.8 hours, let off steam equably, make steam-cured indoor temperature be down to 70 ℃, go out still, place 28 days and get final product.

Experimental data:

The density of this aerated bricks is 670kg/m3, refractory temperature is 730 ℃, thermal conductivity is 0.09W/(m ℃), 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 spray degree of depth that seeps water after 72 hours is 80mm, and ultimate compression strength is 6Mpa, sound absorption coefficient 0.5.

Claims (2)

1. a high tenacity aerated bricks, is characterized in that being made by the raw material of following weight part: cement 8-12, unslaked lime 13-15, modification sawdust 8-10, gypsum 4-5, flyash 60-65, polyvinyl acetate 1-2, SBR emulsion 1-2, aluminum silicate fiber 3-5, cocoanut fatty acid diethanolamide 0.4-0.6, silicone resin polyethers emulsion 0.2-0.4, aerating aluminium powder 7-8, water are appropriate;

Described modification sawdust is made by the raw material of following weight part: zirconium phosphate 2-3, sawdust 12-15, Magnesium Silicate q-agent 1-2, red phosphorus 0.4-0.7, borax 0.4-0.6, cobalt naphthenate 0.01-0.02, ethoxylated dodecyl alcohol 0.01-0.02, hydroxyethyl methylacrylate 2-3, high-efficiency water-reducing agent of poly-carboxylic acid 1-2, vinylformic acid 1-2, ammonium persulphate 0.01-0.02, zirconium nitrate 0.5-1.2, crystal whisker of gypsum 3-5, oxidized polyethlene wax 0.8-1, sewer oil 2-3; Making method is: sawdust powder is broken into 50-100 order particle, sprays into while stirring oxidized polyethlene wax, sewer oil, mix rear placement 5-7 hour, then mix with other remaining components, be heated to 75-80 ℃, dispersion grinding 30-40 minute, obtains.

2. the preparation method of high tenacity aerated bricks according to claim 1, is characterized in that comprising the following steps:

(1) cement, unslaked lime, gypsum, flyash are mixed, send into grinding in ball grinder and become 50-100 order particle, then mix with the composition except aerating aluminium powder, by ratio of water to material, be that 0.57-0.58 adds water, stir, then add aerating aluminium powder, stir and obtain slurry;

(2) slurry (1) step being obtained is poured in mould, obtains brick idiosome;

(3) brick idiosome is put into steam-cured still and vacuumize, then in 1.7-1.9 hour, pass into equably steam, make steam-cured indoor temperature rise to 170-180 ℃, pressure reaches 11-13MPa, keeps constant 9-12 hour;

(4) in 1.7-1.9 hour, let off steam equably, steam-cured indoor temperature is down to below 70 ℃, go out still, place 28-30 days and get final product.