CN109437966A - A kind of foam concrete and preparation method thereof based on preformed foam pore property - Google Patents
A kind of foam concrete and preparation method thereof based on preformed foam pore property Download PDFInfo
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- CN109437966A CN109437966A CN201811571147.0A CN201811571147A CN109437966A CN 109437966 A CN109437966 A CN 109437966A CN 201811571147 A CN201811571147 A CN 201811571147A CN 109437966 A CN109437966 A CN 109437966A
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- Prior art keywords
- foam
- preformed
- foam concrete
- concrete
- water
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Links
- 239000006260 foam Substances 0.000 title claims abstract description 169
- 239000011381 foam concrete Substances 0.000 title claims abstract description 100
- 239000011148 porous material Substances 0.000 title claims abstract description 67
- 238000002360 preparation method Methods 0.000 title claims abstract description 41
- 150000001875 compounds Chemical class 0.000 claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000002002 slurry Substances 0.000 claims abstract description 35
- 239000000843 powder Substances 0.000 claims abstract description 33
- 239000012190 activator Substances 0.000 claims abstract description 26
- 239000010881 fly ash Substances 0.000 claims abstract description 25
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229960000935 dehydrated alcohol Drugs 0.000 claims abstract description 21
- 239000003381 stabilizer Substances 0.000 claims abstract description 20
- 239000004088 foaming agent Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 15
- 235000019353 potassium silicate Nutrition 0.000 claims description 28
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 28
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 26
- 238000012360 testing method Methods 0.000 claims description 24
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 16
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 16
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 16
- 229910052681 coesite Inorganic materials 0.000 claims description 12
- 229910052906 cristobalite Inorganic materials 0.000 claims description 12
- 238000005187 foaming Methods 0.000 claims description 12
- 239000000377 silicon dioxide Substances 0.000 claims description 12
- 229910052682 stishovite Inorganic materials 0.000 claims description 12
- 229910052905 tridymite Inorganic materials 0.000 claims description 12
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 238000004458 analytical method Methods 0.000 claims description 9
- 229910052593 corundum Inorganic materials 0.000 claims description 9
- 230000003020 moisturizing effect Effects 0.000 claims description 9
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 9
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 7
- 229910052708 sodium Inorganic materials 0.000 claims description 7
- 239000011734 sodium Substances 0.000 claims description 7
- 238000010998 test method Methods 0.000 claims description 7
- 238000004090 dissolution Methods 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- KZDMWVBUOTWRDX-UHFFFAOYSA-J sodium cerium(3+) tetrahydroxide Chemical compound [OH-].[Na+].[Ce+3].[OH-].[OH-].[OH-] KZDMWVBUOTWRDX-UHFFFAOYSA-J 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims 1
- 238000001802 infusion Methods 0.000 claims 1
- 239000004615 ingredient Substances 0.000 claims 1
- 238000000399 optical microscopy Methods 0.000 claims 1
- 230000003248 secreting effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 4
- 239000004567 concrete Substances 0.000 description 21
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 10
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 10
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 10
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 9
- 229910052938 sodium sulfate Inorganic materials 0.000 description 9
- 235000011152 sodium sulphate Nutrition 0.000 description 9
- 239000003755 preservative agent Substances 0.000 description 8
- 230000002335 preservative effect Effects 0.000 description 8
- 230000000740 bleeding effect Effects 0.000 description 7
- 239000002893 slag Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000004570 mortar (masonry) Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000002657 fibrous material Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 3
- 239000010883 coal ash Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- UNJPQTDTZAKTFK-UHFFFAOYSA-K cerium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[Ce+3] UNJPQTDTZAKTFK-UHFFFAOYSA-K 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011396 hydraulic cement Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910003471 inorganic composite material Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/10—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam
- C04B38/106—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by using foaming agents or by using mechanical means, e.g. adding preformed foam by adding preformed foams
-
- 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
- C04B30/00—Compositions for artificial stone, not containing binders
-
- 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
Abstract
The present invention relates to a kind of foam concrete and preparation method thereof based on preformed foam pore structure, the method of the present invention is by using preformed foam, then it is squeezed into net slurry according to different demands and by specific foam, to which the foam concrete of Different Pore Structures feature be made, and establish contacting between both preformed foam and foam concrete performance parameter.Foam concrete is made of slurry and preformed foam, slurry component and dosage (mass percent) are as follows: 25.0%-30.0% miberal powder, 38.0%-45.0% flyash, the compound alkali-activator of 23.0%-30.0%, 5.0%-13.0% water；Preformed foam component and dosage (quality being added in every 1000ml water) are as follows: 2.0-5.0g foaming agent, the compound foam stabilizer of 0.5-2.5g, 2.5-7.5g dehydrated alcohol.The present invention regulates and controls the various physical and mechanical property indexs of foam concrete by controlling the related pore structure parameter of foam concrete, meets different demands to adapt to field condition when practice of construction.
Description
Technical field
The invention belongs to inorganic composite materials technical field, more particularly, to a kind of based on preformed foam pore property
Foam concrete and preparation method thereof.
Background technique
Foam concrete is introduced a gas into concrete mortar by way of chemically or physically, by reasonable maintenance at
Type and formed containing a large amount of tiny sealed porositys, and the concrete product with suitable intensity.
Foam concrete as a kind of novel energy saving and environment friendly construction material, have small density, light weight, heat preservation, every
The advantages that sound, antidetonation, but also have that intensity is low, live density is not easy to control and be unable to control the pore structure parameter of foam concrete into
And the defects of regulating and controlling the various physical and mechanical properties of foam concrete.
Summary of the invention
In view of this, passing through the present invention provides a kind of foam concrete preparation method based on preformed foam pore structure
It, will be by foam made of different mixture ratio with not according to the different purposes of building concrete or specific demand using preformed foam
Same volume is squeezed into net slurry, so that the foam concrete of Different Pore Structures feature be made；By the phase for controlling foam concrete
Pore structure parameter is closed, and then regulates and controls the various physical and mechanical property indexs of foam concrete, meets different demands to adapt to reality
Field condition when border is constructed.
The present invention provides a kind of preparation methods of foam concrete based on preformed foam pore structure, including walk as follows
It is rapid:
S1, preparation preformed foam: foaming agent, compound foam stabilizer, dehydrated alcohol and water being mixed and poured into foamite system, benefit
Foaming preparation preformed foam is carried out with compressed air method；
S2, it prepares compound alkali-activator: weighing a certain amount of analysis pure cerium hydroxide sodium and waterglass, pure cerium hydroxide will be analyzed
Sodium pours into waterglass be sufficiently stirred after cover preservative film, stand moisturizing；
S3, it prepares slurry: weighing a certain amount of flyash and miberal powder, be uniformly mixed, then with the compound of step S2 preparation
Alkali-activator and water are added in agitated kettle together to stir evenly, and slurry is made；
S4, prepare foam concrete: preformed foam prepared by step S1 is added in the slurry of step S3 preparation, and stirring is extremely
Preformed foam is uniformly mixed with slurry, is poured in mold, conserves after demoulding and foam concrete is made.
Further, the step S1 specifically:
S1.1, a certain amount of foaming agent, compound foam stabilizer, dehydrated alcohol and water are weighed, foaming agent and foam stabilizer is placed in
It is stirred 4 minutes in dehydrated alcohol and accelerates its dissolution, water is then added and stirs 4 minutes, obtains mixed solution；
S1.2, the mixed solution in step S1.1 is placed in foamite system, foamite system is compressed by hose and air
Machine is connected；It is foamed using air compressor and obtains preformed foam.
It further, further include testing the pore structure of preformed foam, test method step are as follows:
S1.3, the preformed foam that a small amount of step S1.2 preparation is taken with glass slide, are slowly layered, then be placed in optics and show with pocket knife
Micro- microscopic observation simultaneously acquires image；
S1.4, the image for acquiring step S1.3 import image analysis software, such as Imagepro Plus, Image J,
Gray scale and binary conversion treatment are carried out first, are arranged after scale and the parameters such as circularity, Feret diameter, pore-size distribution are carried out to image
Measurement.
The present invention also provides it is a kind of using the above method prepare the foam concrete based on preformed foam pore structure,
It is made of slurry and preformed foam；The slurry component and dosage (mass percent) are as follows: 25.0%-30.0% miberal powder,
38.0%-45.0% flyash, the compound alkali-activator of 23.0%-30.0%, 5.0%-13.0% water；The preformed foam group
Point and dosage (quality being added in every 1000ml water) are as follows: 2.0-5.0g foaming agent, the compound foam stabilizer of 0.5-2.5g, 2.5-
7.5g dehydrated alcohol.
Further, the foaming agent is lauryl sodium sulfate, and purity is not less than 90%；The compound foam stabilizer
Group is divided into sodium carboxymethylcellulose and lauryl alcohol, and wherein the purity of sodium carboxymethylcellulose is not less than 90%, the purity of lauryl alcohol
Not less than 92%, the ratio (mass percent) of sodium carboxymethylcellulose and lauryl alcohol in compound foam stabilizer are as follows: 30.0%-
50.0% sodium carboxymethylcellulose, 50.0%-70.0% lauryl alcohol；The purity of the dehydrated alcohol is not less than 95%, quality
For lauryl sodium sulfate, sodium carboxymethylcellulose and lauryl alcohol three's quality sum, the compound alkali-activator is pure by analyzing
Sodium hydroxide and waterglass for building compound, and proportion dosage is following (mass percent): 12%-20% analyzes pure hydrogen-oxygen
Change sodium, 80%-88% waterglass for building, wherein analysis pure cerium hydroxide sodium purity is 96% or more, modulus of water glass for building
For 1.0-3.8, Baume degrees 34.0-42.0.
Further, the compound alkali-activator is compounded by analysis pure cerium hydroxide sodium and waterglass for building.
Further, the pore structure circularity of the preformed foam is 1.3000-2.3000, and average Feret diameter is
0.1500-0.5500mm；Wherein averagely hole of the Feret diameter between 0.1500-0.5000mm accounts for about the 75% of sum, puts down
Equal hole of the Feret diameter between 0.5000-0.5500mm accounts for about 25%.
Further, the density of the preformed foam is 0.0100-0.0400g/ml, coefficient of foaming 40.00-
85.00,1h sedimentation away from be 10-40mm, 1h bleeding rate be 30%-65%.
Further, the miberal powder rank is not less than S95 rank, and miberal powder specific surface area is 400-480m2/ kg, it is main
Ingredient is Al2O3、SiO2And CaO；The flyash meets flyash and is not more than 12% by screen over-size after 45 μm of square hole screens, powder
The loss on ignition of coal ash is less than 5%, main component Al2O3And SiO2。
Further, the miberal powder specific surface area is in 410~460m2Between/kg.
Further, the dry density of the foam concrete is 320-1580kg/m3, fluidity 155-210mm, 7d
Compression strength is 1.0-60.0MPa, and thermal coefficient is 0.040-0.085W/ (mk), and capillary water absorption rate is 2.20%-
20.00%, porosity 1.0%-80.0%, circularity 1.0000-2.0500, average Feret diameter are 0.4500-
0.9000mm。
Technical solution of the present invention has the following beneficial effects:
(1) the foam concrete raw material environmental protection in the present invention, cost is relatively low, and building production capacity or even environmental protection to China has
Significance；
(2) the foam concrete purposes in the present invention is wide, establish the performance especially pore structure parameter of preformed foam with
Quantitative connection between foam concrete correlation mechanical property；
(3) foam concrete in the present invention has excellent dry density, can bear higher pressure, and its is thermally conductive
A series of indexs of correlation such as rate, fluidity, capillary water absorption rate meet the first-class in " foam concrete " (JG/T 266-2011)
The requirement of product；Preformed foam match ratio or foam volume can be adjusted when Specific construction according to different requirements, to adjust foam
Pore structure parameter, and then the indices of foam concrete are adjusted, so that it is met different construction and application conditions.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention.
Fig. 1 is the foam concrete preparation flow figure in the embodiment of the present invention based on preformed foam pore property；
Fig. 2 is preformed foam preparation flow figure in the embodiment of the present invention；
Fig. 3 is for the pore structure schematic diagram of physics preformed foam in embodiment 1；
Fig. 4 is the foam concrete section pore property in the embodiment of the present invention 5 based on preformed foam pore property
Schematic diagram；
Fig. 5 is the microscopic feature schematic diagram of foam concrete pore structure under scanning electron microscope in the embodiment of the present invention 5.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is further described.
Fluidity test method is according to " Methods for testing uniformity of concrete admixture " (GB/T8077- in the present invention
2012) Article 13 carries out, and intensity test method is according to " Test method for strength of hydraulic cement mortar " (GB/T17671-1999)
It carries out, dry density test method is carried out referring to " inorganic hard insulating product test method " (GB/T5486-2008).
The present invention provides a kind of preparation methods of foam concrete based on preformed foam pore structure, as shown in Figure 1, packet
Include following steps:
S1, preparation preformed foam: foaming agent, compound foam stabilizer and water being mixed and poured into foamite system, empty using compression
Gas method carries out foaming preparation preformed foam；
As shown in Fig. 2, step S1 includes:
S1.1, a certain amount of foaming agent, compound foam stabilizer, dehydrated alcohol and water are weighed, foaming agent and foam stabilizer is placed in
It is stirred 4 minutes in dehydrated alcohol and accelerates its dissolution, 1000ml water is then added and stirs 4 minutes, obtains mixed solution；
S1.2, the mixed solution in step S1.1 is placed in foamite system, foamite system is compressed by hose and air
Machine is connected；It is foamed using air compressor and obtains preformed foam.
Illustratively, the foaming agent be lauryl sodium sulfate, white powder substance, purity be not less than 90%,
It is preferred that purity is higher than 97%；The group of the compound foam stabilizer is divided into sodium carboxymethylcellulose and lauryl alcohol, wherein carboxymethyl cellulose
Plain sodium is that purity is not less than 90% faint yellow fibrous material, and preferably purity is higher than 96%, and lauryl alcohol is that purity is not less than 92%
Yellow oil object, preferably purity are higher than 96%.
Illustratively, in the compound foam stabilizer sodium carboxymethylcellulose and lauryl alcohol ratio (mass percent) are as follows:
30.0%-50.0% sodium carboxymethylcellulose, 50.0%-70.0% lauryl alcohol.
Illustratively, the dehydrated alcohol in the preformed foam is to be not less than to accelerate solute to dissolve for purity
95% colourless transparent liquid, preferably purity are higher than 98%, and quality is lauryl sodium sulfate, sodium carboxymethylcellulose and ten
Glycol three's quality sum.
It should be noted that the preformed foam to preparation has carried out pore structure study test, the specific steps are as follows:
S1.3, the preformed foam that a small amount of step S1.2 preparation is taken with glass slide, are slowly layered, then be placed in optics and show with pocket knife
Micro- microscopic observation simultaneously acquires image；
S1.4, the image for acquiring step S1.3 import image analysis software, such as Imagepro Plus, Image J,
Gray scale and binary conversion treatment are carried out first, are arranged after scale and the parameters such as circularity, Feret diameter, pore-size distribution are carried out to image
Measurement.
The specific pore structure parameter of the preformed foam are as follows: pore structure circularity is 1.3000-2.3000, and average Feret is straight
Diameter is 0.1500-0.5500mm；Wherein averagely hole of the Feret diameter between 0.1500-0.5000mm accounts for about the 75% of sum,
Average hole of the Feret diameter between 0.5000-0.5500mm accounts for about 25%.
In addition, the density of the preformed foam is 0.0100-0.0400g/ml, coefficient of foaming 40.00-85.00,1h
Sedimentation is away between 10-40mm and 1h bleeding rate is between 30%-65%；China " foam concrete foaming agent " (JC/ simultaneously
T 2199-2013) in regulation: the coefficient of foaming of foam solution at least should be greater than 15 times, and the 1h sedimentation of Grade A foam is away from should be little
In 50mm, 1h bleeding rate should be not more than 70%, and the 1h of qualified product foam is settled away from that should be not more than 70mm, and 1h bleeding rate should be not more than
80%；Compared with this regulation, preformed foam produced by the present invention belongs to Grade A.
S2, it prepares compound alkali-activator: weighing the pure NaOH of a certain amount of analysis and waterglass, pure NaOH will be analyzed and poured into
Preservative film is covered after being sufficiently stirred in waterglass, carries out moisturizing after being placed in room temperature lower day；
Illustratively, the compound alkali-activator is compounded by analyzing pure NaOH and waterglass for building；The analysis
For the preferred purity of pure cerium hydroxide sodium 96% or more, the waterglass is waterglass for building, colorless and transparent, modulus 2.6-3.8,
Baume degrees is 34.0-42.0, and preferred modulus is 2.8-3.5, Baume degrees 36.0-40.0.
S3, it prepares slurry: weighing a certain amount of flyash and miberal powder, be uniformly mixed, then with the compound of step S2 preparation
Alkali-activator and water are added in agitated kettle together to stir evenly, and slurry is made；
Preferably, the miberal powder rank is not less than S95 rank, and miberal powder specific surface area is 400-480m2/ kg, it is furthermore preferred that
Miberal powder specific surface area is 410-460m2/kg；The main component of miberal powder is Al2O3、SiO2And CaO；The flyash meets fine coal
Ash is not more than 12% by screen over-size after 45 μm of square hole screens, and the loss on ignition of flyash is less than 5%, main component Al2O3With
SiO2.Aggregate used in foam concrete prepared by the present invention is debris, is conducive to environmental protection, save the cost.
S4, prepare foam concrete: preformed foam prepared by step S1 is added in the slurry of step S3 preparation, slowly stirs
It mixes 4min and is uniformly mixed to preformed foam with slurry, then poured in 40mm × 40mm × 40mm mold；Demoulding after for 24 hours,
7d is conserved under 25 DEG C, 95% damp condition obtains foam concrete.
A kind of foam concrete based on preformed foam pore structure prepared using the above method, by slurry and prefabricated bubble
Foam is made；The slurry component and dosage (mass percent) are as follows: 25.0%-30.0% miberal powder, 38.0%-45.0% fine coal
Ash, the compound alkali-activator of 23.0%-30.0%, 5.0%-13.0% water；The preformed foam component and dosage (every 1000ml water
The quality of middle addition) are as follows: 2.0-5.0g foaming agent, the compound foam stabilizer of 0.5-2.5g, 2.5-7.5g dehydrated alcohol.The foam is mixed
Solidifying filling's dry density is 320-1580kg/m3, fluidity 155-210mm, 7d compression strength is 1.0-60.0MPa, thermally conductive system
Number is 0.040-0.085 W/ (mk), and capillary water absorption rate is 2.20%-20.00%, porosity 1.0%-80.0%, circularity
For 1.0000-2.0500, average Feret diameter is 0.4500-0.9000mm.
It is right for the foam concrete based on preformed foam pore property according to the method described above with material rate preparation
Its pore structure is tested, and detailed process is as follows:
(1) it obtains foam concrete section picture: the foam concrete prepared being packed into 200ml plastic cup, wait condense
The foam concrete sample for conserving 3d age is cut along the vertical direction got angry from centre with hard alloy saw blade after hardening；Choosing
Taking diameter is the circular cross-section of 60mm, is polished with 400 mesh sand paper, polishing section, while with hairbrush cleaning hole cross-sections surfaces powder,
Keep sample in cross section smooth；Simultaneously with ink brushing section, is smoothed out again with CaO powder brushing section after natural air drying, finally make hole
Diameter sharpness of border is as it can be seen that with optics microscope photographing cross-section photographs.
(2) foam concrete pore structure parameter is tested: the cross-section photographs that will acquire import such as Imagepro Plus,
In the image analysis softwares such as Image J, image binaryzation processing is carried out, it is straight that porosity, average Feret are tested out after setting scale
The pore structure parameters such as diameter, circularity and pore-size distribution.
In addition for the foam concrete based on preformed foam pore property of preparation, macro property index test side
Method is as follows:
(1) compression strength: by 40mm × 40mm × 40mm foam cube concrete sample at 25 DEG C, 95% damp condition
After lower maintenance 7d, it is placed under standard compression testing machine and tests compression strength；
(2) dry density: by 40mm × 40mm × 40mm foam cube concrete sample under 25 DEG C, 95% damp condition
It after conserving 7d, is placed in standard ovens at 50 DEG C -70 DEG C that drying to constant weight, weighs test specimen mass M at this time immediately0, divided by examination
Part volume is the dry density of test specimen；
(3) fluidity: when foam concrete just stirs completion, injecting a upper top surface diameter immediately is 36mm, under
Basal diameter is 60mm, in the hollow out rotary table of a height of 60mm, rotary table is slowly lifted after closely knit and stops flowing to foam concrete, this
When the average diameter spread out of foam concrete be fluidity；
(4) thermal coefficient: by 40mm × 40mm × 40mm foam cube concrete sample at 25 DEG C, 95% damp condition
It after lower maintenance 7d, is placed under thermal conductivity measuring apparatus, reads thermal conductivity value；
(5) coefficient of softing: by 40mm × 40mm of identical proportion × 40mm foam cube concrete sample at 25 DEG C,
After conserving 7d under 95% damp condition, No. 1 test block is taken to be placed in water, absorbs water to constant weight taking-up, measure its compression strength immediately, remember
For P1；Taking No. 2 test blocks to be placed in standard ovens at 50 DEG C -70 DEG C, drying to constant weight takes out, and measures its compression strength immediately, remembers
For P2, then the coefficient of softing of test specimen is K=P1/P2；
(6) capillary water absorption rate: by 100mm × 100mm × 100mm foam cube concrete sample at 25 DEG C, 95% is wet
7d is conserved under the conditions of degree be placed in standard ovens at 50 DEG C -70 DEG C that drying to constant weight and take out, be placed in sink, and in test block
The iron staff that two diameters are 5mm is placed in bottom, prevents test block bottom from contacting with sink；After immersion, every 10min in preceding 30min
A test specimen quality is measured, testing after a 30min test specimen quality of measurement, immersion 7h after 30min terminates.Capillary water absorption rate
Then according to formulaIt calculates, wherein i is that unit cross-sectional area adds up water absorption (mm3/mm2), s is capillary water absorption rate,
T is absorbent time (s), and b is i y-intercept.
After testing according to the above method foam concrete obtained, the different preformed foams of incorporation is summed up and have been made
Foam concrete physical and mechanical property between relationship, it is specific as follows:
(1) preformed foam be averaged Feret diameter be 0.1500-0.5500mm, circularity be 1.3000-2.3000 when, foam
Coagulation filling's dry density is 320-1580kg/m3；
(2) preformed foam be averaged Feret diameter be 0.1500-0.5500mm, circularity be 1.3000-2.3000 when, foam
It is 1.0-60.0MPa that the 7d of concrete, which conserves lower compression strength,；
(3) preformed foam be averaged Feret diameter be 0.1500-0.5500mm, circularity be 1.3000-2.3000 when, foam
The thermal coefficient of concrete is 0.040-0.085W/ (mk)；
(4) preformed foam be averaged Feret diameter be 0.1500-0.5500mm, circularity be 1.3000-2.3000 when, foam
The fluidity of concrete is 155-210mm；
(5) preformed foam be averaged Feret diameter be 0.1500-0.5500mm, circularity be 1.3000-2.3000 when, foam
The capillary water absorption rate of concrete is 2.20%-20.00%；
(6) preformed foam be averaged Feret diameter be 0.1500-0.5500mm, circularity be 1.3000-2.3000 when, foam
The porosity of concrete is 1.0%-80.0%；
(7) preformed foam be averaged Feret diameter be 0.1500-0.5500mm, circularity be 1.3000-2.3000 when, foam
The circularity of concrete is 1.0000-2.0500；
(8) preformed foam be averaged Feret diameter be 0.1500-0.5500mm, circularity be 1.3000-2.3000 when, foam
The average Feret diameter of concrete is 0.4500-0.9000mm.
Below in conjunction with specific embodiment, present invention is further described in detail.
Embodiment 1
Embodiment 1 provides a kind of foam concrete based on preformed foam pore property, and specific preparation process is as follows:
The dosage and preparation method of preformed foam each component:
Add after 3g lauryl sodium sulfate (SDS), 0.48g lauryl alcohol, 0.72g sodium carboxymethylcellulose (CMC) are mixed
Entering 4.2g dehydrated alcohol accelerates solute dissolution to add 1000ml water after stirring 4min, molten by what is obtained after being stirred for 4min
Liquid pours into foamite system, and foamite system is connected by hose with air compressor, opens air compressor, carries out at foaming
Preformed foam is made in reason.
The lauryl sodium sulfate (SDS), 99.6% white powder substance is higher than for purity, and the carboxymethyl is fine
Tieing up plain sodium (CMC) is that purity is higher than 97% faint yellow fibrous material, and the lauryl alcohol is 97.85% yellow oil object of purity
Body；The dehydrated alcohol is the colourless transparent liquid that purity is higher than 99.7%, quality SDS, CMC and lauryl alcohol three's mass
The sum of.
Fig. 3 show the pore structure schematic diagram of the preformed foam as made from said ratio, preformed foam obtained have with
Lower property: foam density 0.0146g/ml, coefficient of foaming are 69 times, and away from for 14.20mm, 1h bleeding rate is for 1h sedimentation
45.03%, foam stomata circularity is 1.9225, and average Feret diameter is 0.2904mm.
A kind of foam concrete based on preformed foam pore property the preparation method is as follows:
(1) first 101.5gNaOH is dissolved in 500g waterglass, after being sufficiently stirred, one layer of preservative film, is put on bottle lid
After being placed in normal temperature condition lower day, moisturizing is carried out, compound alkali-activator is made；
(2) 180.6g flyash, 120.4g miberal powder, 33.1g water and the compound alkali-activator of 113.9g obtained above are weighed
It mixes, is stirred；The preformed foam of above-mentioned the present embodiment of 900ml is added after stirring 4min into slurry, then slowly stirs
It mixes 4min and is uniformly mixed to preformed foam with slurry, poured in mold, rear demoulding, is put into standard curing box for test specimen for 24 hours
7d is conserved in (25 DEG C, 95% humidity)；Obtain a kind of foam concrete based on preformed foam pore property.
The miberal powder is S95 rank, specific surface area 424m2/ kg meets " for the grain in cement, mortar and concrete
Change ground granulated blast furnace slag " requirement of granulated blast-furnace slag, main component Al in (GB/T 18046-2017)2O3、SiO2With
CaO；After the square hole screen that it is 45 μm by fineness that the flyash, which meets, screen over-size is not more than 12%, and the burning of flyash is lost
Amount is less than 5%, main component Al2O3And SiO2.The sodium hydroxide is that analysis is pure, and purity is higher than 96%, the waterglass
Colorless and transparent for waterglass for building, modulus 3.24, Baume degrees 39.50, the water are tap water.
The foam concrete items physical and mechanical parameter that implementation column 1 finally obtains is shown in Table 1:
1 foam concrete items physical and mechanical parameter of table
Embodiment 2
Embodiment 2 provides a kind of foam concrete based on preformed foam pore property, preformed foam each component
Dosage and preparation method are same as Example 1.
A kind of foam concrete based on preformed foam pore property the preparation method is as follows:
(1) first 101.5gNaOH is dissolved in 500g waterglass, after being sufficiently stirred, one layer of preservative film, is put on bottle lid
After being placed in normal temperature condition lower day, moisturizing is carried out, compound alkali-activator is made.
(2) 180.6g flyash, 120.4g miberal powder, 33.1g water and the compound alkali-activator of 113.9g obtained above are weighed
It mixes, is stirred；Preformed foam made from the present embodiment of 1100ml is added into slurry after stirring 4min, then slowly stirs
It mixes 4min and is uniformly mixed to preformed foam with slurry, poured in mold, rear demoulding, is put into standard curing box for test specimen for 24 hours
7d is conserved in (25 DEG C, 95% humidity), obtains a kind of foam concrete based on preformed foam pore property.
The purity of above-mentioned various raw materials is same as Example 1 in embodiment 2.
The foam concrete items physical and mechanical parameter that embodiment 2 finally obtains is shown in Table 2:
2 foam concrete items physical and mechanical parameter of table
Embodiment 3
Embodiment 3 provides a kind of foam concrete based on preformed foam pore property, and specific preparation process is as follows:
The dosage of preformed foam each component and the preparation method is as follows:
Add after 3g lauryl sodium sulfate (SDS), 0.56g lauryl alcohol, 0.84g sodium carboxymethylcellulose (CMC) are mixed
Entering 4.4g dehydrated alcohol accelerates solute dissolution to add 1000ml water after stirring 4min, molten by what is obtained after being stirred for 4min
Liquid pours into foamite system, and foamite system is connected by hose with air compressor, opens air compressor, carries out at foaming
Preformed foam is made in reason.
The lauryl sodium sulfate (SDS) is the white powder substance that purity is higher than 99.6%, and the carboxymethyl is fine
Tieing up plain sodium (CMC) is that purity is higher than 97% faint yellow fibrous material, and the lauryl alcohol is 97.85% yellow oil object of purity
Body；Dehydrated alcohol used is the colourless transparent liquid that purity is higher than 99.7%, quality SDS, CMC and lauryl alcohol three's mass
The sum of.
The preformed foam as made from said ratio has following property: foam density 0.0140g/ml, coefficient of foaming are
71 times, 1h sedimentation away from be 14.82mm, 1h bleeding rate be 41.46%, foam stomata circularity be 1.8456, be averaged Feret diameter be
0.2380mm。
A kind of foam concrete based on preformed foam pore property the preparation method is as follows:
(1) first 101.5gNaOH is dissolved in 500g waterglass, after being sufficiently stirred, one layer of preservative film, is put on bottle lid
After being placed in normal temperature condition lower day, moisturizing is carried out, compound alkali-activator is made；
(2) 180.6g flyash, 120.4g miberal powder, 33.1g water and the compound alkali-activator of 113.9g obtained above are weighed
It mixes, is stirred；Preformed foam made from the present embodiment of 900ml is added into slurry after stirring 4min, then slowly stirs
It mixes 4min and is uniformly mixed to preformed foam with slurry, poured in mold, rear demoulding, is put into standard curing box for test specimen for 24 hours
7d is conserved in (25 DEG C, 95% humidity), obtains a kind of foam concrete based on preformed foam pore property.
The miberal powder is S95 rank, specific surface area 424m2/ kg meets specification for " for cement, mortar and concrete
In ground granulated blast furnace slag " requirement of granulated blast-furnace slag, main component Al in (GB/T 18046-2017)2O3、
SiO2And CaO.The flyash meets be 45 μm of square hole screens by fineness after, screen over-size is not more than 12%, and flyash
Loss on ignition is less than 5%, main component Al2O3And SiO2.The sodium hydroxide is that analysis is pure, and purity is higher than 96%, the water
Glass is waterglass for building, and colorless and transparent, modulus 3.24, Baume degrees 39.50, water used is tap water.
The foam concrete items physical and mechanical parameter that embodiment 3 finally obtains is shown in Table 3:
3 foam concrete items physical and mechanical parameter of table
Embodiment 4
Embodiment 4 provides a kind of foam concrete based on preformed foam pore property, preformed foam each component
Dosage and preparation method are same as Example 1.
A kind of foam concrete based on preformed foam pore property the preparation method is as follows:
(1) first 101.5gNaOH is dissolved in 500g waterglass, after being sufficiently stirred, one layer of preservative film, is put on bottle lid
After being placed in normal temperature condition lower day, moisturizing is carried out, compound alkali-activator is made.
(2) 180.6g flyash, 120.4g miberal powder, 33.1g water and the compound alkali-activator of 113.9g obtained above are weighed
It mixes, is stirred；Preformed foam made from the present embodiment of 1100ml is added into slurry after stirring 4min, then slowly stirs
It mixes 4min and is uniformly mixed to preformed foam with slurry, poured in mold, rear demoulding, is put into standard curing box for test specimen for 24 hours
7d is conserved in (25 DEG C, 95% humidity), obtains a kind of foam concrete based on preformed foam pore property.
The purity of above-mentioned various raw materials is same as Example 1 in embodiment 4.
The foam concrete items physical and mechanical parameter that embodiment 4 finally obtains is shown in Table 4:
4 foam concrete items physical and mechanical parameter of table
Embodiment 5
Embodiment 5 provides a kind of foam concrete based on preformed foam pore property, preformed foam each component
Dosage and the preparation method is as follows:
After 3g lauryl sodium sulfate (SDS), 0.64g lauryl alcohol, 0.0.96g sodium carboxymethylcellulose (CMC) are mixed
4.6g dehydrated alcohol, which is added, accelerates solute dissolution 1000ml water to be added, after being stirred for 4min, by what is obtained after stirring 4min
Solution pours into foamite system, and foamite system is connected by hose with air compressor, opens air compressor, foams
Preformed foam is made in processing.
The lauryl sodium sulfate (SDS) is the white powder substance that purity is higher than 99.6%, and the carboxymethyl is fine
Tieing up plain sodium (CMC) is that purity is higher than 97% faint yellow fibrous material, and the lauryl alcohol is 97.85% yellow oil object of purity
Body；The dehydrated alcohol is the colourless transparent liquid that purity is higher than 99.7%, quality SDS, CMC and lauryl alcohol three's mass
The sum of.
The preformed foam as made from said ratio has following property: foam density 0.0162g/ml, coefficient of foaming are
62 times, 1h sedimentation away from be 15.15mm, 1h bleeding rate be 48.84%, foam stomata circularity be 1.7411, be averaged Feret diameter be
0.2099mm。
A kind of foam concrete based on preformed foam pore property the preparation method is as follows:
(1) first 101.5gNaOH is dissolved in 500g waterglass, after being sufficiently stirred, one layer of preservative film, is put on bottle lid
After being placed in normal temperature condition lower day, moisturizing is carried out, compound alkali-activator is made；
(2) 180.6g flyash, 120.4g miberal powder, 33.1g water and the compound alkali-activator of 113.9g obtained above are weighed
It mixes, is stirred；Preformed foam made from the present embodiment of 900ml is added into slurry after stirring 4min, then slowly stirs
It mixes 4min and is uniformly mixed to preformed foam with slurry, poured in mold, rear demoulding, is put into standard curing box for test specimen for 24 hours
7d is conserved in (25 DEG C, 95% humidity), obtains a kind of foam concrete based on preformed foam pore property.
Fig. 4 is foam concrete section pore property schematic diagram in embodiment 5；Fig. 5 is in embodiment 5 under scanning electron microscope
The microscopic feature schematic diagram of foam concrete pore structure.
The miberal powder is S95 rank, specific surface area 424m2/ kg meets specification for " in cement, mortar and concrete
Ground granulated blast furnace slag " requirement of granulated blast-furnace slag, main component Al in (GB/T 18046-2017)2O3、SiO2
And CaO.After the flyash satisfaction passes through fineness as 45 μm of square hole screens, screen over-size is not more than 12%, and the burning of flyash is lost
Amount is less than 5%, main component Al2O3And SiO2.The sodium hydroxide is that analysis is pure, and purity is higher than 96%, the waterglass
Colorless and transparent for waterglass for building, modulus 3.24, Baume degrees 39.50, the water are tap water.
The foam concrete items physical and mechanical parameter that implementation column 5 finally obtains is shown in Table 5:
5 foam concrete items physical and mechanical parameter of table
Embodiment 6
Embodiment 6 provides a kind of foam concrete based on preformed foam pore property, preformed foam each component
Dosage and preparation method are in the same manner as in Example 5.
A kind of foam concrete based on preformed foam pore property the preparation method is as follows:
(1) first 101.5gNaOH is dissolved in 500g waterglass, after being sufficiently stirred, one layer of preservative film, is put on bottle lid
After being placed in normal temperature condition lower day, moisturizing is carried out, compound alkali-activator is made.
(2) 180.6g flyash, 120.4g miberal powder, 33.1g water and the compound alkali-activator of 113.9g obtained above are weighed
It mixes, is stirred；Preformed foam made from 1100ml the present embodiment is added into slurry after stirring 4min, then is slowly stirred
4min is uniformly mixed to preformed foam with slurry, is poured in mold, and rear demoulding, is put into standard curing box (25 for test specimen for 24 hours
DEG C, 95% humidity) in conserve 7d, obtain a kind of foam concrete based on preformed foam pore property.
The purity of above-mentioned various raw materials is same as Example 5 in embodiment 6.
The foam concrete items physical and mechanical parameter that implementation column 6 finally obtains is shown in Table 6:
6 foam concrete items physical and mechanical parameter of table
The present invention provides a kind of foam concrete preparation methods based on preformed foam pore structure, by using prefabricated bubble
Foam will be mixed according to the different purposes of building concrete or specific demand by foam made of different mixture ratio with different volumes
Amount is squeezed into net slurry, so that the foam concrete of Different Pore Structures feature be made；By the relevant hole knot for controlling foam concrete
Structure parameter, and then regulate and control the various physical and mechanical property indexs of foam concrete, meet different demands to adapt to practice of construction
When field condition.
The raw materials used environmental protection of foam concrete produced by the present invention, cost is relatively low, builds production capacity or even environment to China
Protect important in inhibiting；Foam concrete obtained has excellent dry density, can bear higher pressure, and its is thermally conductive
A series of indexs of correlation such as rate, fluidity, capillary water absorption rate meet " for the granulated blast-furnace in cement, mortar and concrete
Slag powders " (GB/T 18046-2017) qualified product even Grade A requirement.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of method for preparing the foam concrete based on preformed foam pore property, which is characterized in that including walking as follows
It is rapid:
S1, preparation preformed foam: foaming agent, compound foam stabilizer, dehydrated alcohol and water are mixed, and foaming obtains preformed foam；
S2, it prepares compound alkali-activator: weighing a certain amount of sodium hydroxide and waterglass, sodium hydroxide is poured into waterglass and is filled
It is sealed after dividing stirring, stands moisturizing, obtain compound alkali-activator；
S3, it prepares slurry: weighing a certain amount of flyash and miberal powder, be uniformly mixed, then the compound alkali with step S2 preparation swashs
Hair agent and water stir evenly together, and slurry is made；
S4, prepare foam concrete: preformed foam prepared by step S1 is added in the slurry of step S3 preparation, stirs to prefabricated
Foam is uniformly mixed with slurry, is poured in mold, conserves after demoulding and foam concrete is made.
2. a kind of foam concrete method prepared based on preformed foam pore property according to claim 1, special
Sign is, the step S1 specifically:
S1.1, a certain amount of foaming agent, compound foam stabilizer, dehydrated alcohol and water are weighed, foaming agent and compound foam stabilizer is placed in
Stirring accelerates its dissolution in dehydrated alcohol, and water is then added and stirs to get mixed solution；
S1.2, the mixed solution in step S1.1 is placed in foamite system, foamite system passes through hose and air compressor phase
Even；It is foamed using air compressor and obtains preformed foam.
3. a kind of foam concrete method prepared based on preformed foam pore property according to claim 2, special
Sign is, further includes testing the pore structure of preformed foam, test method step are as follows:
S1.3, the preformed foam that a small amount of step S1.2 preparation is taken with glass slide, are allowed to slowly layering and are placed under optical microscopy
It observes and acquires image；
S1.4, gray scale and binary conversion treatment are carried out to the image of step S1.3 acquisition, is arranged after scale and pore structure is carried out to image
The measurement of parameter.
4. a kind of foam concrete based on preformed foam pore structure prepared by any one of claim 1-3 the method, by
Slurry and preformed foam are made；It is characterized in that, the slurry component and dosage (mass percent) are as follows: 25.0%-30.0%
Miberal powder, 38.0%-45.0% flyash, the compound alkali-activator of 23.0%-30.0%, 5.0%-13.0% water；The prefabricated bubble
Foam component and dosage (quality being added in every 1000ml water) are as follows: 2.0-5.0g foaming agent, the compound foam stabilizer of 0.5-2.5g, 2.5-
7.5g dehydrated alcohol.
5. the foam concrete according to claim 4 based on preformed foam pore property, which is characterized in that the hair
Infusion is lauryl sodium sulfate, and purity is not less than 90%；The group of the compound foam stabilizer be divided into sodium carboxymethylcellulose and
Lauryl alcohol, wherein the purity of sodium carboxymethylcellulose is not less than 90%, and the purity of lauryl alcohol is not less than 92%, in compound foam stabilizer
The ratio (mass percent) of sodium carboxymethylcellulose and lauryl alcohol are as follows: 30.0%-50.0% sodium carboxymethylcellulose,
50.0%-70.0% lauryl alcohol；The purity of the dehydrated alcohol is not less than 95%；The compound alkali-activator is by analyzing pure hydrogen-oxygen
Change sodium and waterglass for building compounds, proportion dosage is following (mass percent): 12%-20% analyzes pure cerium hydroxide
Sodium, 80%-88% waterglass for building, wherein analysis pure cerium hydroxide sodium purity is 96% or more, modulus of water glass for building is
1.0-3.8, Baume degrees 34.0-42.0.
6. the foam concrete according to claim 4 based on preformed foam pore property, which is characterized in that the nothing
The quality of water-ethanol is the quality sum of foaming agent and compound foam stabilizer.
7. the foam concrete according to claim 4 based on preformed foam pore property, which is characterized in that described pre-
The pore structure circularity of foam processed is 1.3000-2.3000, and average Feret diameter is 0.1500-0.5500mm；It is wherein average
Hole of the Feret diameter between 0.1500-0.5000mm accounts for about the 75% of sum, and average Feret diameter is in 0.5000-
Hole between 0.5500mm accounts for about 25%.
8. the foam concrete according to claim 4 based on preformed foam pore property, which is characterized in that described pre-
The density of foam processed is 0.0100-0.0400g/ml, and coefficient of foaming 40.00-85.00,1h sedimentation for 10-40mm, 1h away from secreting
Water rate is 30%-65%.
9. the foam concrete according to claim 4 based on preformed foam pore property, which is characterized in that the mine
Powder rank is not less than S95 rank, and miberal powder specific surface area is 400-480m2/ kg, main component Al2O3、SiO2And CaO；Institute
It states flyash and meets flyash by screen over-size after 45 μm of square hole screens no more than 12%, the loss on ignition of flyash is less than 5%, master
Wanting ingredient is Al2O3And SiO2。
10. the foam concrete according to claim 4 based on preformed foam pore property, which is characterized in that described
The dry density of foam concrete is 320-1580kg/m3, fluidity 155-210mm, 7d compression strength is 1.0-60.0MPa,
Thermal coefficient is 0.040-0.085W/ (mk), and capillary water absorption rate is 2.20%-20.00%, porosity 1.0%-
80.0%, circularity 1.0000-2.0500, average Feret diameter are 0.4500-0.9000mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111863155A (en) * | 2020-07-06 | 2020-10-30 | 山东大学 | Preparation method of foam concrete with adjustable air hole characteristics |
| CN113087457A (en) * | 2021-02-23 | 2021-07-09 | 中交武汉港湾工程设计研究院有限公司 | Foamed light soil using coal cinder as raw material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140272439A1 (en) * | 2013-03-15 | 2014-09-18 | Serious Energy, Inc. | Low embodied energy wallboard |
| CN105712669A (en) * | 2016-01-23 | 2016-06-29 | 中国地质大学（武汉） | Geopolymer-fiber road pavement mending material and preparation method thereof |
| EP3127886A1 (en) * | 2015-08-03 | 2017-02-08 | CellConTec GmbH | Foaming agent and method for foaming and stabilization of a construction material mash for low-pore building materials |
| CN106946509A (en) * | 2017-03-24 | 2017-07-14 | 广州大学 | Alkali-activated carbonatite flyash/slag foam concrete and preparation method thereof |
| CN107759128A (en) * | 2017-10-26 | 2018-03-06 | 西南科技大学 | A kind of foam concrete mineral slurry pore creating material and preparation method thereof |
-
2018
- 2018-12-19 CN CN201811571147.0A patent/CN109437966B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140272439A1 (en) * | 2013-03-15 | 2014-09-18 | Serious Energy, Inc. | Low embodied energy wallboard |
| EP3127886A1 (en) * | 2015-08-03 | 2017-02-08 | CellConTec GmbH | Foaming agent and method for foaming and stabilization of a construction material mash for low-pore building materials |
| CN105712669A (en) * | 2016-01-23 | 2016-06-29 | 中国地质大学（武汉） | Geopolymer-fiber road pavement mending material and preparation method thereof |
| CN106946509A (en) * | 2017-03-24 | 2017-07-14 | 广州大学 | Alkali-activated carbonatite flyash/slag foam concrete and preparation method thereof |
| CN107759128A (en) * | 2017-10-26 | 2018-03-06 | 西南科技大学 | A kind of foam concrete mineral slurry pore creating material and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| XU FANG等: "Mix design and flexural toughness of PVA fiber reinforced fly ash-geopolymer composites", 《CONSTRUCTION AND BUILDING MATERIALS》 * |
| 赵亚楠等: "基于十二烷基硫酸钠复配发泡体系性能测试", 《纺织检测与标准》 * |
| 陈书宇: "羧甲基纤维素稳泡剂对泡沫混凝土性能的影响", 《CCPA第二届全国泡沫混凝土技术交流会论文集》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111863155A (en) * | 2020-07-06 | 2020-10-30 | 山东大学 | Preparation method of foam concrete with adjustable air hole characteristics |
| CN111863155B (en) * | 2020-07-06 | 2022-04-08 | 山东大学 | Preparation method of foam concrete with adjustable air hole characteristics |
| CN113087457A (en) * | 2021-02-23 | 2021-07-09 | 中交武汉港湾工程设计研究院有限公司 | Foamed light soil using coal cinder as raw material and preparation method thereof |
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Application publication date: 20190308 Assignee: Anhui BRC new environmental protection building materials Co.,Ltd. Assignor: CHINA University OF GEOSCIENCES (WUHAN CITY) Contract record no.: X2024980001703 Denomination of invention: A foam concrete based on the structural characteristics of prefabricated foam holes and its preparation method Granted publication date: 20201208 License type: Common License Record date: 20240131 |