CN105777191A - Nitrogen foam concrete and preparation method thereof - Google Patents

Nitrogen foam concrete and preparation method thereof Download PDF

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Publication number
CN105777191A
CN105777191A CN201610313667.6A CN201610313667A CN105777191A CN 105777191 A CN105777191 A CN 105777191A CN 201610313667 A CN201610313667 A CN 201610313667A CN 105777191 A CN105777191 A CN 105777191A
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CN
China
Prior art keywords
nitrogen
cement
concrete
foam
water
Prior art date
Application number
CN201610313667.6A
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Chinese (zh)
Inventor
张艮中
Original Assignee
河北三山建材科技有限公司
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Priority to CN201610313667.6A priority Critical patent/CN105777191A/en
Publication of CN105777191A publication Critical patent/CN105777191A/en

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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/40Porous or lightweight materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/52Sound-insulating materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention discloses a nitrogen foam concrete and a preparation method thereof, which relate to the technical field of building concrete. The nitrogen foam concrete consists of water and cement paste, and the water cement ratio is 0.4 to 0.5; the cement paste consists of the following components: ordinary portland cement, rapid cement hardening agent, washed-out sand, silica fume, coal ash, animal protein foaming agent, polymer dispersion powder and polycarboxylate superplasticizer. The polymer dispersion powder, the polycarboxylate superplasticizer, the ordinary portland cement, the washed-out sand, the silica fume and the coal ash are sequentially added into water in an agitation tank and sufficiently agitated; after being diluted by water, the animal protein foaming agent is supplied into a nitrogen foaming device, so that nitrogen bubbles are produced in advance, the animal protein foaming agent is then added into the paste and sufficiently mixed, and finally, the paste is added with the rapid cement hardening agent and uniformly agitated, and is then poured into a mold and shaped. Construction wall slabs which utilize the nitrogen foam concrete prepared by the invention have the advantages of high strength, good heat insulation property, good resistance, light weight, seismic resistance, material saving, sound insulation and environment-friendliness, and the service lives of products are prolonged.

Description

A kind of nitrogen foam concrete and preparation method thereof
Technical field
The present invention relates to building concrete technical field, particularly relate to a kind of nitrogen foam concrete and preparation method thereof.
Background technology
Along with the development of sociometric technique, the energy-conserving and environment-protective of building field are proposed more strict requirement by society, promote building energy conservation green technology constantly perfect.Traditional with clay be primary raw material, the non-lbearing wall material that produces with sintering process, due to from great, energy consumption is high and the defects such as soil that occupy cultivated land, be eliminated gradually.At present, replacing is various Light trabses, and is widely used to the external and internal wall of the building structures such as frame structure, lightweight steel construction and movable plank house.Needing possess following primary condition as wallboard: 1. lightweight: because steel construction load is excessive, stressed member need strengthen by steel content, thus can increase building cost;2. insulation: will reach energy-conservation purpose, is necessary for insulation, heat insulation, and this just requires material that body of wall uses it is necessary to have good thermal and insulating performance;3. lateral resisting and vertical bearing capacity to be got well;4. contend with and to get well to wind load impact resistance.
Conventional Light trabs main Types has building-block, plasterboard, polystyrene foam plate, GRC plate, chloro-magnesium cement vegetable fibre board and autoclaved aerated concrete slab etc..Though these light weight boards have his own strong points, but all come with some shortcomings.As building-block needs that sintering, energy consumption be big, contaminated environment;Plasterboard water proofing property is poor, fire rating is low;Polystyrene foam plate fire rating is low, catch fire burning time can release polystyrene poison;GRC plate surface strength is low, it is big to damage in transportation;Chloro-magnesium cement vegetable fibre board early strength is high, later strength is inadequate, fire line is poor, deform anti-halogen big, easy, Chloride residue is big;Autoclaved aerated concrete slab is easily with decorative layer disengaging, yielding poorly is insufficient for frangible in market, handling process, resistance to compression and collapsoing strength is low, hanging force poor does not sting nail, affect secondary decoration.
Summary of the invention
The technical problem to be solved is to provide nitrogen foam concrete of a kind of bulk strength height, long service life, good effect of heat insulation and preparation method thereof.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of nitrogen foam concrete, the foam concrete made with water and cement slurry, the gas in the foam of foam concrete is the ratio of mud of nitrogen, water and cement slurry is 0.4~0.5;
Cement slurry includes following component: ordinary portland cement, Rapid cement hardening agent, washing river sand, SILICA FUME, flyash, animal protein foaming agent, polymer dispersion powder and polycarboxylate water-reducer, and the parts by weight proportioning of each component is as follows:
Ordinary portland cement: 60~65 parts;
Rapid cement hardening agent: 3~4 parts;
Washing river sand: 15~20 parts;
SILICA FUME: 4~6 parts;
Flyash: 8~12 parts;
Animal protein foaming agent: 0.3~0.36 part;
Polymer dispersion powder: 0.09~0.12 part;
Polycarboxylate water-reducer: 0.18~0.20 part;
First with the prefabricated nitrogen foam of animal protein foaming agent, then other composition mix and blend is made;
Containing 99.99% nitrogen 0.65~0.75 cubic metre in every cubic metre of nitrogen foam concrete.
Preferably, the temperature of water used by described nitrogen foam concrete is 40~45 DEG C.
Preferably, described ordinary portland cement is general silicon Po42.5 cement, and washing river sand specification is 80~120 orders, and flyash is first level flour coal ash.
The concrete preparation method of above-mentioned nitrogen foam, comprises the following steps:
(1) prefabricated nitrogen foam: after animal protein foaming agent and water are pressed 1:30 dilution proportion, in confined space, 99.99% nitrogen is filled in animal protein foaming agent aqueous solution, is sufficiently stirred for the nitrogen foam preparing into interior inflated with nitrogen;
(2) in agitator tank, it is previously added water according to the ratio of mud consumption of 0.4~0.5, by above-mentioned parts by weight, polycarboxylate water-reducer, polymer dispersion powder is put into agitator tank and started stirring;
(3), in whipping process, it is sequentially placed into ordinary portland cement, SILICA FUME, flyash in the slurry, stirs;
(4), after addition washing river sand stirs, the nitrogen foam prepared is passed into, while the foam limit stirring that froths, until the wet proportion of slurry reaches 715/m3 and stops stirring;
(5) adding Rapid cement hardening agent in the slurry, disposable injection die for molding after stirring, 0.5h disposed slurry solidifies, and obtains the nitrogen foam concrete that dry density is 550kg/m3;
Wherein, it it is 0.65~0.75 cubic metre by every concrete nitrogen use level of cubic meter of finished material nitrogen foam.
Preferably, in step (three), ordinary portland cement is general silicon Po42.5 cement, flyash is first level flour coal ash;In step (four), washing river sand specification is 80~120 orders, and every concrete nitrogen use level of cubic meter of finished material nitrogen foam is 0.7 cubic metre.
Adopt and have the beneficial effects that produced by technique scheme: the nitrogen foam concrete utilizing the present invention to prepare is as engineering wallboard, there is intensity height, heat preservation and insulation is good, block-water performance is good, lightweight, environmental protection, material-saving, antidetonation, sound insulation advantage, weight only has regular-type foam concrete 1/5, the regular-type foam concrete crushing strength of equal quality only has 1.5 MPas, and the concrete comprcssive strength of nitrogen foam of the present invention reaches 3~4 MPas, intensity is more than doubled;Owing to the nitrogen molecule in air entrapment is inactive, can be remained permanently in internal structure, inside and outside negative pressure will be formed with outside air, so water hardly enters inside, improve the air-tightness of product, relatively common foam concrete heat-preserving performance doubles, seal and water absorption rate improve 50%-100%, heat transfer coefficient reduces by one times;The nitrogen filled in foam also slow down product oxidation rate, substantially increases product service life.The present invention is utilized to be applicable in on-the-spot flooring underground heat, the foam concrete heat-preserving system construction of roof and factory with mould production foam concrete block and heat preservation plate material.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further detailed explanation.
A kind of nitrogen foam concrete, in the foam concrete foam made with water and cement slurry, gas is the ratio of mud of nitrogen, water and cement slurry is 0.4~0.5;
Cement slurry includes following component: ordinary portland cement, Rapid cement hardening agent, washing river sand, SILICA FUME, flyash, animal protein foaming agent, polymer dispersion powder and polycarboxylate water-reducer, and the parts by weight proportioning of each component is as follows:
Ordinary portland cement: 60~65 parts;
Rapid cement hardening agent: 3~4 parts;
Washing river sand: 15~20 parts;
SILICA FUME: 4~6 parts;
Flyash: 8~12 parts;
Animal protein foaming agent: 0.3~0.36 part;
Polymer dispersion powder: 0.09~0.12 part;
Polycarboxylate water-reducer: 0.18~0.20 part;
Containing 99.99% nitrogen 0.65~0.75 cubic metre in every cubic metre of nitrogen foam concrete.
Wherein, the temperature of water used by described nitrogen foam concrete is 40~45 DEG C;Described ordinary portland cement is general silicon Po42.5 cement, and washing river sand specification is 80~120 orders, and flyash is first level flour coal ash.
The concrete preparation method of above-mentioned nitrogen foam, comprises the following steps:
(1) prefabricated nitrogen foam: after animal protein foaming agent and water are pressed 1:30 dilution proportion, in confined space, 99.99% nitrogen is filled in animal protein foaming agent aqueous solution, is sufficiently stirred for the nitrogen foam preparing into interior inflated with nitrogen;
(2) in agitator tank, it is previously added water according to the ratio of mud consumption of 0.4~0.5, by above-mentioned parts by weight, polycarboxylate water-reducer, polymer dispersion powder is put into agitator tank and started stirring;
(3), in whipping process, it is sequentially placed into ordinary portland cement, SILICA FUME, flyash in the slurry, stirs;
(4), after addition washing river sand stirs, the nitrogen foam prepared is passed into, while the foam limit stirring that froths, until the wet proportion of slurry reaches 715/m3 and stops stirring;
(5) adding Rapid cement hardening agent in the slurry, disposable injection die for molding after stirring, 0.5h disposed slurry solidifies, and obtains the nitrogen foam concrete that unit weight is 550kg/m3;
Wherein, it it is 0.65~0.75 cubic metre by every concrete nitrogen use level of cubic meter of finished material nitrogen foam, it is preferred to 0.7 cubic metre;In step (three), ordinary portland cement is preferably general silicon Po42.5 cement, flyash is preferably first level flour coal ash;In step (four), washing river sand specification is preferably 80~120 orders.
Detailed description of the invention is as follows:
When the ratio of mud is 0.4, and water temperature is 40 DEG C, in above-mentioned nitrogen foam concrete preparation process, in each batch, the weight portion of each component is as shown in Table 1:
In above three batch, in the nitrogen foam concrete of every cubic metre, 99.99% nitrogen use level is followed successively by 0.65m3,0.70m3,0.75m3.
When the ratio of mud is 0.5, and water temperature is 45 DEG C, in above-mentioned nitrogen foam concrete preparation process, in each batch, the weight portion of each component is as shown in Table 2:
In above three batch, in the nitrogen foam concrete of every cubic metre, 99.99% nitrogen use level is followed successively by 0.65m3,0.70m3,0.75m3,
Utilize nitrogen foam concrete prepared by the present invention as engineering wallboard, there is intensity height, heat preservation and insulation is good, block-water performance is good, lightweight, environmental protection, material-saving, antidetonation, advantage that soundproof effect is good, weight only has regular-type foam concrete 1/5, the regular-type foam concrete crushing strength of equal quality only has 1.5 MPas, and the concrete comprcssive strength of nitrogen foam of the present invention reaches 3~4 MPas, intensity is more than doubled;Owing to the nitrogen molecule in air entrapment is inactive, can be remained permanently in internal structure, inside and outside negative pressure will be formed with outside air, so water hardly enters inside, improve the air-tightness of product, relatively common foam concrete heat-preserving performance doubles, seal and water absorption rate improve 50%-100%, heat transfer coefficient reduces by one times;The nitrogen filled in foam also slow down product oxidation rate, substantially increases product service life.The present invention is utilized to be applicable in on-the-spot flooring underground heat, the foam concrete heat-preserving system construction of roof and factory with mould production foam concrete block and heat preservation plate material.
Obviously, embodiments described above is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.

Claims (5)

1. a nitrogen foam concrete, the foam concrete made with water and cement slurry, it is characterised in that: the gas in the foam of foam concrete is the ratio of mud of nitrogen, water and cement slurry is 0.4~0.5;
Cement slurry includes following component: ordinary portland cement, Rapid cement hardening agent, washing river sand, SILICA FUME, flyash, animal protein foaming agent, polymer dispersion powder and polycarboxylate water-reducer, and the parts by weight proportioning of each component is as follows:
Ordinary portland cement: 60~65 parts;
Rapid cement hardening agent: 3~4 parts;
Washing river sand: 15~20 parts;
SILICA FUME: 4~6 parts;
Flyash: 8~12 parts;
Animal protein foaming agent: 0.3~0.36 part;
Polymer dispersion powder: 0.09~0.12 part;
Polycarboxylate water-reducer: 0.18~0.20 part;
First with the prefabricated nitrogen foam of animal protein foaming agent, then other composition mix and blend is made;
Containing 99.99% nitrogen 0.65~0.75 cubic metre in every cubic metre of nitrogen foam concrete.
2. nitrogen foam concrete according to claim 1, it is characterised in that: used by described nitrogen foam concrete, the temperature of water is 40~45 DEG C.
3. nitrogen foam concrete according to claim 1, it is characterised in that: described ordinary portland cement is general silicon Po42.5 cement, and washing river sand specification is 80~120 orders, and flyash is first level flour coal ash.
4. the concrete preparation method of nitrogen foam as claimed in claim 1, comprises the following steps:
(1) prefabricated nitrogen foam: after animal protein foaming agent and water are pressed 1:30 dilution proportion, in confined space, 99.99% nitrogen is filled in animal protein foaming agent aqueous solution, is sufficiently stirred for the nitrogen foam preparing into interior inflated with nitrogen;
(2) in agitator tank, it is previously added water according to the ratio of mud consumption of 0.4~0.5, by above-mentioned parts by weight, polycarboxylate water-reducer, polymer dispersion powder is put into agitator tank and started stirring;
(3), in whipping process, it is sequentially placed into ordinary portland cement, SILICA FUME, flyash in the slurry, stirs;
(4), after addition washing river sand stirs, the nitrogen foam prepared is passed into, while the foam limit stirring that froths, until the wet proportion of slurry reaches 715/m3 and stops stirring;
(5) adding Rapid cement hardening agent in the slurry, disposable injection die for molding after stirring, 0.5h disposed slurry solidifies, and obtains the nitrogen foam concrete that dry density is 550kg/m3;
Wherein, it it is 0.65~0.75 cubic metre by every concrete nitrogen use level of cubic meter of finished material nitrogen foam.
5. the concrete preparation method of nitrogen foam as claimed in claim 4, it is characterised in that: in step (three), ordinary portland cement is general silicon Po42.5 cement, flyash is first level flour coal ash;In step (four), washing river sand specification is 80~120 orders, and every concrete nitrogen use level of cubic meter of finished material nitrogen foam is 0.7 cubic metre.
CN201610313667.6A 2016-05-12 2016-05-12 Nitrogen foam concrete and preparation method thereof CN105777191A (en)

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106747079A (en) * 2016-12-08 2017-05-31 广西北海浩邦新能源科技有限公司 A kind of environmentally friendly paveio(u)r and preparation method thereof
CN107311550A (en) * 2017-07-28 2017-11-03 河北三山建材科技有限公司 A kind of cellular concrete mixing method
CN107447901A (en) * 2017-07-28 2017-12-08 河北三山建材科技有限公司 Anti-seismic prefabricated floor and floor antidetonation splicing construction

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101497532A (en) * 2008-01-30 2009-08-05 武汉沃尔浦科技有限公司 Foaming latex cement energy-saving material for self anti-crack building enclosure
CN104478362A (en) * 2014-12-24 2015-04-01 徐立新 Self-insulation foam concrete building block as well as manufacturing technology and mounting method
CN105538480A (en) * 2015-12-15 2016-05-04 河北三山建材科技有限公司 Production process and foaming device for nitrogen filled foam concrete self-thermal insulation block

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101497532A (en) * 2008-01-30 2009-08-05 武汉沃尔浦科技有限公司 Foaming latex cement energy-saving material for self anti-crack building enclosure
CN104478362A (en) * 2014-12-24 2015-04-01 徐立新 Self-insulation foam concrete building block as well as manufacturing technology and mounting method
CN105538480A (en) * 2015-12-15 2016-05-04 河北三山建材科技有限公司 Production process and foaming device for nitrogen filled foam concrete self-thermal insulation block

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106747079A (en) * 2016-12-08 2017-05-31 广西北海浩邦新能源科技有限公司 A kind of environmentally friendly paveio(u)r and preparation method thereof
CN107311550A (en) * 2017-07-28 2017-11-03 河北三山建材科技有限公司 A kind of cellular concrete mixing method
CN107447901A (en) * 2017-07-28 2017-12-08 河北三山建材科技有限公司 Anti-seismic prefabricated floor and floor antidetonation splicing construction

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Application publication date: 20160720

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