CN110105013A - A kind of high-strength cracking resistance foam concrete and preparation method thereof - Google Patents
A kind of high-strength cracking resistance foam concrete and preparation method thereof Download PDFInfo
- Publication number
- CN110105013A CN110105013A CN201910376226.4A CN201910376226A CN110105013A CN 110105013 A CN110105013 A CN 110105013A CN 201910376226 A CN201910376226 A CN 201910376226A CN 110105013 A CN110105013 A CN 110105013A
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- foam concrete
- cracking resistance
- foaming agent
- strength cracking
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions 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
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of high-strength cracking resistance foam concrete and preparation method thereof, above-mentioned high-strength cracking resistance foam concrete is made of the following raw material based on parts by weight: 200-240 parts of cement, 20-45 parts of slag powders, 80-120 parts of water, 1-3 parts of waterproofing agent, 1-5 parts of foaming agent, 0.2-0.5 parts of foam stabilizer, 45-70 parts of light-weight aggregate, 0.3-0.8 parts of wood fibre.Using physical blowing agent and chemical foaming agent this pair of foaming in the present invention, in conjunction with the use of wood fibre, it obtains so as to which a large amount of stable sealed porositys can be formed in foam concrete and weaken convection current and radiation effect in stomata, thus but also the thermal coefficient of high-strength cracking resistance foam concrete provided by the invention is lower while reducing material water absorption rate；And the use of double foamings is able to give full play to the material properties such as cement, slag powders, wood fibre, and obtains and a kind of have higher intensity and crack resistance preferably high-strength cracking resistance foam concrete compared with usual foam concrete.
Description
Technical field
The present invention relates to field of material technology more particularly to a kind of high-strength cracking resistance foam concrete and preparation method thereof.
Background technique
As building trade continues to develop, low-carbon energy-saving becomes the new developing direction of modern architecture.Foam concrete is again
Referred to as foamed cement, lightweight concrete etc. are that a kind of benefit is useless, environmentally friendly, energy saving, cheap and energy saving with non-flame properties novel building
Material.As a kind of novel energy saving and environment friendly construction material, foam concrete starts the roofing in building non-weight bearing area
Insulating layer gets application, and advantage is main are as follows: density is small, light weight, heat preservation, sound insulation, antidetonation etc..But foam concrete there is also
Certain defect, such as low strength, cracking, water suction, the promotion and application of foam concrete of these defective effects.
Summary of the invention
In view of the above-mentioned problems, now providing a kind of high-strength cracking resistance foam concrete for being applicable to roofing construction and its preparation side
Method, it is desirable to provide one kind can overcome the disadvantages of low strength, cracking and can have the high-strength cracking resistance of higher-strength after initial set
Foam concrete.
Specific technical solution is as follows:
The first aspect of the invention is to provide a kind of high-strength cracking resistance foam concrete, has the feature that, with weight
Number meter, is made of the following raw material: 200-240 parts of cement, 20-45 parts of slag powders, 80-120 parts of water, 1-3 parts of waterproofing agent, foaming
1-5 parts of agent, 0.2-0.5 parts of foam stabilizer, 45-70 parts of light-weight aggregate, 0.3-0.8 parts of wood fibre；
Wherein, foaming agent is mixed to form in mass ratio for 1:0.3 by physical blowing agent and chemical foaming agent, and physical blowing
Agent is selected from one of protein type foaming agent or colophony type foaming agent, and it is water-soluble that chemical foaming agent is selected from sodium hydroxide solution, dioxygen
One of liquid.
Above-mentioned high-strength cracking resistance foam concrete also has the feature that, cement is by P.O42.5R normal silicate water
Mud and P.C32.5 composite Portland cement are mixed to form in mass ratio for 7:3.
Above-mentioned high-strength cracking resistance foam concrete also has the feature that, slag powders are by flyash, steel slag, desulfurization stone
Cream, water-granulated slag are mixed to form in mass ratio for 6:2:1:1.
Above-mentioned high-strength cracking resistance foam concrete, also has the feature that, waterproofing agent is selected from polycarboxylate water-reducer, naphthalene system
One of water-reducing agent or aliphatic water reducing agent.
Above-mentioned high-strength cracking resistance foam concrete, also has the feature that, foam stabilizer is selected from water-based calcium stearate, bone
One of glue, alkylolamides, amine oxide, dodecyldimethylamine oxide, polyacrylamide or polyvinyl alcohol.
Above-mentioned high-strength cracking resistance foam concrete also has the feature that, light-weight aggregate is haydite, and its partial size is
3.75-11.75mm。
The second aspect of the invention is to provide a kind of preparation method of above-mentioned high-strength cracking resistance foam concrete, has in this way
Feature, include the following steps:
1), according to parts by weight, cement, slag powders, wood fibre, part water are placed in blender and stirred 3-5 minutes,
Light-weight aggregate addition blender is continued into stirring again and obtains slurries mixture within 3-5 minutes；
2) according to parts by weight, the water of surplus, physical blowing agent, foam stabilizer are sequentially added in foaming machine, 3-5 points of stirring
Zhong Hou, then chemical foaming agent is added in foaming machine to and is continued stirring 5-8 minutes, aqueous solution is made, then formed through high-pressure foam
Foamed slurry；
3), the foamed slurry of 15-25% is added in slurries mixture in stirring at low speed down based on volume parts, is stirred
A period of time is so that material dispersion is uniform, then by the addition of remaining foamed slurry and high-speed stirred 2-3min, finally passes through mixture
Overlay film is carried out after natural levelling to conserve to form high-strength cracking resistance foam concrete.
The beneficial effect of above scheme is:
1), in the present invention that the higher early-strength ordinary portland cement of early strength, complex cement and early strength is low
But the mineral admixtures such as the high flyash of later strength combine, and guarantee foam concrete in the construction process and after process
Compression strength；
2) a certain amount of foam stabilizer, is mixed in foaming agent in the present invention, this can reduce the surface tension of expanding foam solution,
The viscosity for improving the foam formed, effectively prevent foam concrete is porous to be connected to form bigger gap, and improve foam concrete
Stability at different conditions；
3), in the present invention using physical blowing agent and chemical foaming agent this pair of foaming, in conjunction with the use of wood fibre,
It obtains so as to which a large amount of stable sealed porositys can be formed in foam concrete and weaken convection current and radiation effect in stomata, to reduce material
But also the thermal coefficient of foam concrete provided by the invention is lower while material water absorption rate；And the use of double foamings also obtains
To give full play to the material properties such as cement, slag powders, wood fibre, to prepare a kind of compared with usual foam concrete tool
There are higher intensity and the better foam concrete of crack resistance.
4), high-strength cracking resistance foam concrete provided by the invention has higher intensity compared with conventional concrete and preferably resists
Fragility, this concrete can be used to cellular concrete product, and can use in cast-in-site roof insulating layer.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, those of ordinary skill in the art's every other embodiment obtained without creative labor,
It shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention is further explained in the light of specific embodiments, but not as the limitation of the invention.
A kind of high-strength cracking resistance foam concrete is provided in the present invention, preparation method includes the following steps:
1), according to parts by weight, 200-240 parts of cement, 20-45 slag powders, 0.3-0.8 wood fibre, part water are put
It is stirred 3-5 minutes in blender, then 45-70 parts of light-weight aggregates addition blenders is continued into stirring and obtain within 3-5 minutes slurries mixing
Material；
2) according to parts by weight, the water of surplus, physical blowing agent, 0.2-0.5 portions of foam stabilizers are sequentially added in foaming machine,
After stirring 3-5 minutes, then chemical foaming agent is added in foaming machine to and is continued stirring 5-8 minutes, aqueous solution is made, then through high pressure
Foaming forms foamed slurry；
3), the foamed slurry of 15-25% is added in slurries mixture in stirring at low speed down based on volume parts, is stirred
A period of time is so that material dispersion is uniform, then by the addition of remaining foamed slurry and high-speed stirred 2-3min, finally passes through mixture
Overlay film is carried out after natural levelling to conserve to form high-strength cracking resistance foam concrete；
Wherein, the gross mass number of water is 80-120 parts；The gross mass number of foaming agent is 1-5 parts, and it is sent out by physics
Infusion and chemical foaming agent are mixed to form in mass ratio for 1:0.3, and physical blowing agent is selected from protein type foaming agent or colophony type
One of foaming agent, chemical foaming agent are selected from one of sodium hydroxide solution, hydrogen peroxide solution；Cement is general by P.O42.5R
Logical portland cement and P.C32.5 composite Portland cement are mixed to form in mass ratio for 7:3；Slag powders by flyash, steel slag,
Desulfurized gypsum, water-granulated slag are mixed to form in mass ratio for 6:2:1:1；Waterproofing agent is selected from polycarboxylate water-reducer, naphthalene water reducer
Or one of aliphatic water reducing agent；Foam stabilizer is selected from water-based calcium stearate, gelatine, alkylolamides, amine oxide, dodecyl
One of dimethyl amine, polyacrylamide or polyvinyl alcohol；Light-weight aggregate is haydite, and its partial size is 3.75-
11.75mm。
Each material amounts are as shown in the table in the embodiment of the present invention 1-3:
The high-strength cracking resistance foam concrete performance test provided in above-described embodiment 1-3 is as shown in the table:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| Dry density/(kg/m3) | 350 | 375 | 320 |
| 25 days compression strength/MPa | 3.2 | 3.5 | 3.3 |
| Thermal coefficient/(w/ (mk)) | 0.066 | 0.069 | 0.064 |
| Volume water absorption rate (%) | 6.5 | 6.8 | 6.6 |
As seen from the above table, the high-strength cracking resistance foam concrete properties symbol prepared after constituent optimization in the present invention
The regulation in JG/T266-2011 is closed, and indices numerical value is more superior.
The above is only preferred embodiments of the present invention, are not intended to limit the implementation manners and the protection scope of the present invention, right
For those skilled in the art, it should can appreciate that all with equivalent replacement made by present specification and aobvious
And the obtained scheme of variation being clear to, it should all be included within the scope of the present invention.
Claims (7)
1. a kind of high-strength cracking resistance foam concrete, which is characterized in that based on parts by weight, be made of the following raw material: cement 200-
240 parts, 20-45 parts of slag powders, 80-120 parts of water, 1-3 parts of waterproofing agent, 1-5 parts of foaming agent, 0.2-0.5 parts of foam stabilizer, light-weight aggregate
45-70 parts, 0.3-0.8 parts of wood fibre；
Wherein, the foaming agent is mixed to form in mass ratio for 1:0.3 by physical blowing agent and chemical foaming agent, and the physics
Foaming agent be selected from one of protein type foaming agent or colophony type foaming agent, the chemical foaming agent be selected from sodium hydroxide solution,
One of hydrogen peroxide solution.
2. high-strength cracking resistance foam concrete according to claim 1, which is characterized in that the cement is common by P.O42.5R
Portland cement and P.C32.5 composite Portland cement are mixed to form in mass ratio for 7:3.
3. high-strength cracking resistance foam concrete according to claim 1, which is characterized in that the slag powders are by flyash, steel
Slag, desulfurized gypsum, water-granulated slag are mixed to form in mass ratio for 6:2:1:1.
4. high-strength cracking resistance foam concrete according to claim 1, which is characterized in that the waterproofing agent subtracts selected from polycarboxylic acids
One of aqua, naphthalene water reducer or aliphatic water reducing agent.
5. high-strength cracking resistance foam concrete according to claim 1, which is characterized in that the foam stabilizer is selected from aqueous tristearin
One in sour calcium, gelatine, alkylolamides, amine oxide, dodecyldimethylamine oxide, polyacrylamide or polyvinyl alcohol
Kind.
6. high-strength cracking resistance foam concrete according to claim 1, which is characterized in that the light-weight aggregate is haydite, and its
Partial size is 3.75-11.75mm.
7. a kind of preparation method of any one of claim 1-6 high-strength cracking resistance foam concrete, which is characterized in that including such as
Lower step:
1), according to parts by weight, cement, slag powders, wood fibre, part water are placed in blender and stirred 3-5 minutes, then will
Light-weight aggregate addition blender continues stirring and obtains slurries mixture in 3-5 minutes；
2) according to parts by weight, the water of surplus, physical blowing agent, foam stabilizer are sequentially added in foaming machine, stirred 3-5 minutes
Afterwards, then chemical foaming agent is added in foaming machine to and is continued stirring 5-8 minutes, aqueous solution is made, then formed and sent out through high-pressure foam
Steep slurry；
3), the foamed slurry of 15-25% is added in slurries mixture in stirring at low speed down based on volume parts, stirs one section
Time is so that material dispersion is uniform, then simultaneously high-speed stirred 2-3min is added in remaining foamed slurry, finally by mixture through nature
Overlay film is carried out after levelling to conserve to form high-strength cracking resistance foam concrete.
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| CN201910376226.4A CN110105013B (en) | 2019-05-07 | 2019-05-07 | High-strength anti-cracking foam concrete and preparation method thereof |
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| CN201910376226.4A CN110105013B (en) | 2019-05-07 | 2019-05-07 | High-strength anti-cracking foam concrete and preparation method thereof |
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| CN110105013B CN110105013B (en) | 2021-10-01 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451861A (en) * | 2019-08-31 | 2019-11-15 | 韩少鹏 | A kind of light foam concrete preparation method |
| CN111777369A (en) * | 2020-06-15 | 2020-10-16 | 云南大永高速公路有限公司 | Concrete for maintaining stability of highway slope and preparation method thereof |
| CN111908949A (en) * | 2020-08-13 | 2020-11-10 | 上海宝冶集团有限公司 | Mixed slurry for foundation treatment engineering and preparation method thereof |
| CN112851276A (en) * | 2021-02-23 | 2021-05-28 | 中建商品混凝土有限公司 | Light underwater undispersed plugging concrete and preparation method thereof |
| CN113149543A (en) * | 2021-03-11 | 2021-07-23 | 四川齐能新型材料有限公司 | Non-autoclaved high-strength foam concrete and preparation method thereof |
| CN113149707A (en) * | 2021-04-24 | 2021-07-23 | 上海练定新材料科技有限公司 | Compression-resistant foam concrete and preparation method thereof |
| CN113264717A (en) * | 2021-06-11 | 2021-08-17 | 东北大学 | Large-mixing-amount solid waste base-activated foam concrete and preparation method thereof |
| CN113336570A (en) * | 2021-07-02 | 2021-09-03 | 重庆大学 | Novel composite foamed gypsum sound-absorbing material and preparation method thereof |
| CN113929389A (en) * | 2021-10-25 | 2022-01-14 | 杭州瑞鼎建材有限公司 | High-strength lightweight concrete and preparation method thereof |
| CN115108769A (en) * | 2022-07-29 | 2022-09-27 | 烟台大学 | High-performance mixed alkali-shock foam concrete and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451861A (en) * | 2019-08-31 | 2019-11-15 | 韩少鹏 | A kind of light foam concrete preparation method |
| CN111777369A (en) * | 2020-06-15 | 2020-10-16 | 云南大永高速公路有限公司 | Concrete for maintaining stability of highway slope and preparation method thereof |
| CN111908949A (en) * | 2020-08-13 | 2020-11-10 | 上海宝冶集团有限公司 | Mixed slurry for foundation treatment engineering and preparation method thereof |
| CN112851276A (en) * | 2021-02-23 | 2021-05-28 | 中建商品混凝土有限公司 | Light underwater undispersed plugging concrete and preparation method thereof |
| CN113149543A (en) * | 2021-03-11 | 2021-07-23 | 四川齐能新型材料有限公司 | Non-autoclaved high-strength foam concrete and preparation method thereof |
| CN113149707A (en) * | 2021-04-24 | 2021-07-23 | 上海练定新材料科技有限公司 | Compression-resistant foam concrete and preparation method thereof |
| CN113264717A (en) * | 2021-06-11 | 2021-08-17 | 东北大学 | Large-mixing-amount solid waste base-activated foam concrete and preparation method thereof |
| CN113336570A (en) * | 2021-07-02 | 2021-09-03 | 重庆大学 | Novel composite foamed gypsum sound-absorbing material and preparation method thereof |
| CN113336570B (en) * | 2021-07-02 | 2023-04-21 | 重庆大学 | Novel composite foaming gypsum sound absorption material and preparation method thereof |
| CN113929389A (en) * | 2021-10-25 | 2022-01-14 | 杭州瑞鼎建材有限公司 | High-strength lightweight concrete and preparation method thereof |
| CN113929389B (en) * | 2021-10-25 | 2022-08-12 | 杭州瑞鼎建材有限公司 | High-strength lightweight concrete and preparation method thereof |
| CN115108769A (en) * | 2022-07-29 | 2022-09-27 | 烟台大学 | High-performance mixed alkali-shock foam concrete and preparation method thereof |
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