CN104098315A - Durable air-added brick and preparation method thereof - Google Patents

Abstract

A durable air-added brick is prepared from the following raw materials in parts by weight: 5-7 parts of silica fume, 1-2 parts of magnesium oxide, 1-2 parts of calcium chloride, 0.3-0.5 part of caffeic acid, 0.05-0.07 part of cocamidopropyl betaine, 0.04-0.05 part of calcium stearoyl lactylate, 9-12 parts of cement, 1-2 parts of a cross-linking agent TAIC, 12-15 parts of quicklime, 9-11 parts of modified rice hull, 6-8 parts of gypsum, 50-60 parts of coal ash, 7-8 parts of air-added aluminium powder and a proper amount of water. According to the air-added brick, through the use of the silica fume and the magnesium oxide, the compression resistance, the fracture resistance, the permeation resistance, the corrosion resistance, the shock resistance and the abrasion resistance of the air-added brick are obviously improved, the service life of the air-added brick is obviously prolonged, and particularly under the severe environments such as chlorine salt polluted and eroded stations, sulphate polluted and eroded stations, and high-humidity stations; the durability of the air-added brick can be improved by one time; through the use of the modified rice hull, the heat insulation effect is improved, the water resistance is good, the weight is reduced, the seismic resistance is improved, and meanwhile the water reducing effect is good.

Description

A kind of durable aerated bricks and preparation method thereof

Technical field

The invention belongs to brick field, relate in particular to a kind of durable 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 is carried out amount body and is surely made, 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 along with the development of building trade, buildings is more and more higher, moulding is more and more peculiar, the requirements such as intensity to aerated bricks, density, shrinkage value, frost resistance all increase, improving constantly along with people's living standard in addition, requirement to environment is also more and more higher, and the heat-insulating property to buildings, sound absorption qualities, radioactivity have 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 durable aerated bricks and preparation method thereof, this aerated bricks has excellent resistance to compression, anti-folding, impervious, anticorrosion, shock resistance and wear resisting property, long service life, particularly pollute under the severe environment such as erosion, sulphate attack, high humidity good endurance at villaumite.

Technical scheme of the present invention is as follows:

A kind of durable aerated bricks, is characterized in that being made up of the raw material of following weight part: SILICA FUME 5-7, magnesium oxide 1-2, calcium chloride 1-2, coffic acid 0.3-0.5, AMONYL 380LC 0.05-0.07, CSL 0.04-0.05, cement 9-12, linking agent TAIC 1-2, unslaked lime 12-15, modification rice husk 9-11, gypsum 6-8, flyash 50-60, aerating aluminium powder 7-8, water are appropriate;

Described modification rice husk is made up of the raw material of following weight part: rice husk 13-15, S-WAT 0.5-0.7, far infrared ceramic powder 1-2, allyl oenanthate 0.5-0.7, glyoxal ethyline 0.1-0.2, aromatic urethane acrylate 1-2, Hydroxyethyl acrylate 1-2, high-efficiency water-reducing agent of poly-carboxylic acid 1-2, glass powder 1-2, ammonium persulphate 0.01-0.02, alginate calcium 0.4-0.7, nepheline powder 1-2, three red oily 0.5-0.7, sewer oil 2-3; Making method is: powdered rice hulls is broken into 50-100 order particle, sprays into while stirring three red oil, sewer oil, mix rear placement 5-7 hour, then mix with other remaining components, be heated to 75-80 DEG C, dispersion grinding 30-40 minute, to obtain final product.

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

(1) cement, unslaked lime, gypsum, SILICA FUME, magnesium oxide, flyash are mixed, send into grinding in ball grinder and become 50-100 order particle, mix with the composition except aerating aluminium powder again, be that 0.56-0.57 adds water by ratio of water to material, stir, add again 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 DEG C, pressure reaches 11-13MPa, keeps constant 9-11 hour;

(4) in 1.7-1.9 hour, let off steam equably, steam-cured indoor temperature is down to below 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 is by using SILICA FUME, magnesium oxide, the resistance to compression of aerated bricks, anti-folding, impervious, anticorrosion, shock resistance and wear resisting property are significantly improved, the work-ing life of significant prolongation aerated bricks, particularly pollute under the severe environment such as erosion, sulphate attack, high humidity at villaumite, can make the weather resistance of aerated bricks double; By using modification rice husk, strengthen effect of heat insulation, water-tolerant, has alleviated weight, has increased anti-seismic performance, and water-reducing effect is good simultaneously.

Embodiment

A kind of durable aerated bricks, by following weight part (kilogram) raw material make: SILICA FUME 6, magnesium oxide 1.5, calcium chloride 1.6, coffic acid 0.4, AMONYL 380LC 0.06, CSL 0.05, cement 11, linking agent TAIC 1.6, unslaked lime 14, modification rice husk 10, gypsum 7, flyash 55, aerating aluminium powder 7.6, water are appropriate;

Described modification rice husk by following weight part (kilogram) raw material make: rice husk 14, S-WAT 0.6, far infrared ceramic powder 1.6, allyl oenanthate 0.6, glyoxal ethyline 0.1, aromatic urethane acrylate 1.5, Hydroxyethyl acrylate 1.5, high-efficiency water-reducing agent of poly-carboxylic acid 1.5, glass powder 1.5, ammonium persulphate 0.01, alginate calcium 0.6, nepheline powder 1.6, three red oil 0.6, sewer oil 2.6; Making method is: powdered rice hulls is broken into 80 order particles, sprays into while stirring three red oil, sewer oil, mix rear placement 6 hours, then mix with other remaining components, be heated to 77 DEG C, dispersion grinding 35 minutes, to obtain final product.

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

(1) cement, unslaked lime, gypsum, SILICA FUME, magnesium oxide, flyash are mixed, send into grinding in ball grinder and become 80 order particles, then mix with the composition except aerating aluminium powder, be 0.56 to add water by ratio of water to material, 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 1.8 hours, pass into equably steam, make steam-cured indoor temperature rise to 175 DEG C, pressure reaches 12MPa, keeps constant 10 hours;

(4) in 1.8 hours, let off steam equably, make steam-cured indoor temperature be down to 70 DEG C, go out still, place 30 days and get final product.

Experimental data:

The density of this aerated bricks is 650kg/m3, refractory temperature is 730 DEG C, thermal conductivity is 0.18W/(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 spray degree of depth that seeps water after 72 hours is 70mm, and ultimate compression strength is 7.3Mpa, sound absorption coefficient 0.3.

Claims (2)

1. a durable aerated bricks, is characterized in that being made up of the raw material of following weight part: SILICA FUME 5-7, magnesium oxide 1-2, calcium chloride 1-2, coffic acid 0.3-0.5, AMONYL 380LC 0.05-0.07, CSL 0.04-0.05, cement 9-12, linking agent TAIC 1-2, unslaked lime 12-15, modification rice husk 9-11, gypsum 6-8, flyash 50-60, aerating aluminium powder 7-8, water are appropriate;

Described modification rice husk is made up of the raw material of following weight part: rice husk 13-15, S-WAT 0.5-0.7, far infrared ceramic powder 1-2, allyl oenanthate 0.5-0.7, glyoxal ethyline 0.1-0.2, aromatic urethane acrylate 1-2, Hydroxyethyl acrylate 1-2, high-efficiency water-reducing agent of poly-carboxylic acid 1-2, glass powder 1-2, ammonium persulphate 0.01-0.02, alginate calcium 0.4-0.7, nepheline powder 1-2, three red oily 0.5-0.7, sewer oil 2-3; Making method is: powdered rice hulls is broken into 50-100 order particle, sprays into while stirring three red oil, sewer oil, mix rear placement 5-7 hour, then mix with other remaining components, be heated to 75-80 DEG C, dispersion grinding 30-40 minute, to obtain final product.

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

(1) cement, unslaked lime, gypsum, SILICA FUME, magnesium oxide, flyash are mixed, send into grinding in ball grinder and become 50-100 order particle, mix with the composition except aerating aluminium powder again, be that 0.56-0.57 adds water by ratio of water to material, stir, add again 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 DEG C, pressure reaches 11-13MPa, keeps constant 9-11 hour;

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