A kind of high-strength foam thermal insulation concrete and preparation method thereof
Technical field
The invention belongs to construction engineering technical field, specially a kind of high-strength foam thermal insulation concrete and preparation method thereof.
Background technology
Foam concrete is typically that the foaming agent aqueous solution mechanically is prepared into foam, then foam is added to siliceous
In the slurries of composition such as material, calcareous material, water and various additives, blended stirring, moulding by casting, the one of maintenance
Plant porous material.Due to containing a large amount of blind bore gaps in foam concrete, following good physical and mechanical property is made it have.
The species of foam concrete is a lot, but most commonly cement foam concrete.Cement foam concrete is according to it
Admixture is different can be divided into cement-fly ash-lime type, cement-slag-lime-gypsum type, cement-fly ash-sand-stone again
Grey type, the lime type of one sand of cement one, cement-slag-fly ashlime-plant-fibre type, cement-sand-fiberglass type etc.
Type.
Chinese invention patent application 201010140498.3 discloses a kind of high-performance foam concrete and preparation method thereof,
By 500~1000 parts of cement, 0~500 part of admixture, additive 5~20,1~200 part of Ludox, 5~20 parts of foaming agent, water
500~700 parts of compositions, its preparation method is first foaming agent to be first dissolved in water foam is made by machinery, then adds foam
Enter to cement slurry, it is 330~400kg/m that it, which dries apparent density,3, compression strength reaches 1~2MPa, and thermal conductivity factor is less than
0.06~0.08W/m.K.
The content of the invention
Present invention aims to overcome that there is provided a kind of high-strength foam thermal insulation concrete and its preparation for deficiency of the prior art
Method.
The high-strength foam thermal insulation concrete of the present invention, is prepared from the following raw materials in parts by weight:Portland cement 88~
98 parts, 60~65 parts of active filler, 18~20 parts of filler of reinforcing, compound 13~15 parts of foaming agent, 3~4 parts of calcium nitrite, poly- carboxylic
Sour 5~6 parts of water reducer, 58~66 parts of Nitrilon waste water;
The active filler is made up of flyash, zirconium boride, metakaolin, zinc hydrometallurgy waste residue;
The reinforcing filler is made up of sepiolite fibre, vinal, polyvinylpyrrolidone, hydrogenated rosin;
The compound foaming agent is by alkyl polyglucoside, sodium carboxymethylcellulose, pentaerythritol stearate, hydrogen peroxide group
Into.
As optimization, the high-strength foam thermal insulation concrete is prepared from the following raw materials in parts by weight:Portland cement
90 parts, 35 parts of flyash, 5 parts of zirconium boride, 7 parts of metakaolin, 15 parts of zinc hydrometallurgy waste residue, 7 parts of sepiolite fibre, polyvinyl alcohol
5 parts of fiber, 3 parts of polyvinylpyrrolidone, 4 parts of hydrogenated rosin, 4 parts of alkyl polyglucoside, 3 parts of sodium carboxymethylcellulose, season penta
2 parts of tetrol stearate, 5 parts of hydrogen peroxide, 3.5 parts of calcium nitrite, 5.5 parts of polycarboxylate water-reducer, 62 parts of Nitrilon waste water.
As optimization, the high-strength foam thermal insulation concrete, the flyash particle diameter is 8~10 μm, zirconium boride particle diameter be 5~
8 μm, metakaolin particle diameter be 8~10 μm, zinc hydrometallurgy waste residue particle diameter be 10~20 μm.
A kind of method for preparing the high-strength foam thermal insulation concrete, comprises the following steps:
A, by the flyash of the parts by weight, zirconium boride, metakaolin, zinc hydrometallurgy waste residue, be added in mixer,
Stir;
B, by the sepiolite fibre of the parts by weight, vinal, polyvinylpyrrolidone, hydrogenated rosin, nitrile
Synthetic fibre waste water is added in mixer, is stirred;
C, the Portland cement by the parts by weight, are added in the mixture in step B, with 450~550
Turn/min speed stirs 10 minutes;Then the mixture added in step A, 50 points are stirred with 450~550 turns/min speed
Clock;
D, by the calcium nitrite of the parts by weight, polycarboxylate water-reducer, be added in the mixture in step C, and with
300~350 turns/min speed is stirred 6~8 minutes;Then alkyl polyglucoside, the carboxymethyl for adding the parts by weight are fine
The plain sodium of dimension, pentaerythritol stearate, hydrogen peroxide, under the conditions of 50~60 DEG C, 15 are stirred with 500~650 turns/min speed
~20 minutes;
E, step D mixture is poured into die for molding, curing and demolding, the lightweight coagulation of size needed for cutting into
Native product.
The high-strength foam thermal insulation concrete of the present invention, is used as building thermal insulation material, excellent performance.Particularly with the addition of active filler
It is made up of flyash, zirconium boride, metakaolin, zinc hydrometallurgy waste residue;Strengthen filler by sepiolite fibre, vinal,
Polyvinylpyrrolidone, hydrogenated rosin composition;And by compound foaming agent by alkyl polyglucoside, sodium carboxymethylcellulose, season
Penta tetrol stearate, hydrogen peroxide composition;It is made up of special formula and foam process.With unexpected high intensity and
Relatively low density and heat conductivility, combination property are protruded, and effects of energy conservation and environmental protection is obvious.
Major parameter contrast is as follows:
Major parameter contrasts situation
Classification index |
Bulk density |
28d compression strength |
Thermal conductivity factor |
Combustibility |
Styrofoam |
36~44kg/m3 |
130~230KPa |
0.36W/m.K |
A1 grades non-ignitable |
Embodiment 1 |
277kg/m3 |
2812KPa |
0.063W/m.K |
A1 grades non-ignitable |
Embodiment 2 |
279kg/m3 |
2801KPa |
0.064W/m.K |
A1 grades non-ignitable |
Embodiment 3 |
281kg/m3 |
2799KPa |
0.064W/m.K |
A1 grades non-ignitable |
Embodiment
The invention will be further described for example given below plan, but is not to be construed as to the scope of the present invention
Limitation, some the nonessential modifications and adaptations of those skilled in the art according to present invention to the present invention still fall within this
The protection domain of invention.
Embodiment 1:
A, by particle diameter be 8~10 μm of 35 kilograms of flyash, particle diameter be 5~8 μm of 5 kilograms of zirconium borides, particle diameter be 8~10 μm partially
7 kilograms of kaolin, particle diameter are 10~20 μm of 15 kilograms of zinc hydrometallurgy waste residues, are added in mixer, stir;
B, by 7 kilograms of sepiolite fibre, 5 kilograms of vinal, 3 kilograms of polyvinylpyrrolidone, hydrogenated rosin 4,000
Gram, 62 kilograms of Nitrilon waste water be added in mixer, stir;
C, by 90 kilograms of Portland cement, be added in the mixture in step B, with 450~550 turns/min speed
Degree stirring 10 minutes;Then the mixture added in step A, is stirred 50 minutes with 450~550 turns/min speed;
D, the BKS-199 polycarboxylate water-reducers for producing 3.5 kilograms of calcium nitrite, the chemical limited company of Shandong Bock
5.5 kilograms, it is added in the mixture in step C, and is stirred 6~8 minutes with 300~350 turns/min speed;Then add
4 kilograms of alkyl polyglucoside, 3 kilograms of sodium carboxymethylcellulose, 2 kilograms of pentaerythritol stearate, 5 kilograms of hydrogen peroxide, 50
Under the conditions of~60 DEG C, stirred 15~20 minutes with 500~650 turns/min speed;
E, step D mixture is poured into die for molding, curing and demolding, the lightweight coagulation of size needed for cutting into
Native product.
Embodiment 2:
A, by particle diameter be 8~10 μm of 34 kilograms of flyash, particle diameter be 5~8 μm of 5 kilograms of zirconium borides, particle diameter be 8~10 μm partially
7 kilograms of kaolin, particle diameter are 10~20 μm of 14 kilograms of zinc hydrometallurgy waste residues, are added in mixer, stir;
B, by 6 kilograms of sepiolite fibre, 5 kilograms of vinal, 3 kilograms of polyvinylpyrrolidone, hydrogenated rosin 4,000
Gram, 58 kilograms of Nitrilon waste water be added in mixer, stir;
C, by 88 kilograms of Portland cement, be added in the mixture in step B, with 450~550 turns/min speed
Degree stirring 10 minutes;Then the mixture added in step A, is stirred 50 minutes with 450~550 turns/min speed;
D, the BKS-199 polycarboxylate water-reducers 5 for producing 3 kilograms of calcium nitrite, the chemical limited company of Shandong Bock
Kilogram, it is added in the mixture in step C, and stirred 6~8 minutes with 300~350 turns/min speed;Then alkane is added
3 kilograms of base polyglucoside, 3 kilograms of sodium carboxymethylcellulose, 2 kilograms of pentaerythritol stearate, 5 kilograms of hydrogen peroxide, 50~
Under the conditions of 60 DEG C, stirred 15~20 minutes with 500~650 turns/min speed;
E, step D mixture is poured into die for molding, curing and demolding, the lightweight coagulation of size needed for cutting into
Native product.
Embodiment 3:
A, by particle diameter be 8~10 μm of 36 kilograms of flyash, particle diameter be 5~8 μm of 5 kilograms of zirconium borides, particle diameter be 8~10 μm partially
8 kilograms of kaolin, particle diameter are 10~20 μm of 16 kilograms of zinc hydrometallurgy waste residues, are added in mixer, stir;
B, by 6.5 kilograms of sepiolite fibre, 6 kilograms of vinal, 3 kilograms of polyvinylpyrrolidone, hydrogenated rosin
4.5 kilograms, 66 kilograms of Nitrilon waste water be added in mixer, stir;
C, by 98 kilograms of Portland cement, be added in the mixture in step B, with 450~550 turns/min speed
Degree stirring 10 minutes;Then the mixture added in step A, is stirred 50 minutes with 450~550 turns/min speed;
D, the BKS-199 polycarboxylate water-reducers 6 for producing 4 kilograms of calcium nitrite, the chemical limited company of Shandong Bock
Kilogram, it is added in the mixture in step C, and stirred 6~8 minutes with 300~350 turns/min speed;Then institute is added
4 kilograms of alkyl polyglucoside, 3 kilograms of sodium carboxymethylcellulose, 2 kilograms of pentaerythritol stearate, 6 kilograms of hydrogen peroxide are stated,
Under the conditions of 50~60 DEG C, stirred 15~20 minutes with 500~650 turns/min speed;
E, step D mixture is poured into die for molding, curing and demolding, the lightweight coagulation of size needed for cutting into
Native product.