CN108585926A - A kind of preparation method of foam concrete - Google Patents
A kind of preparation method of foam concrete Download PDFInfo
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- CN108585926A CN108585926A CN201810765621.7A CN201810765621A CN108585926A CN 108585926 A CN108585926 A CN 108585926A CN 201810765621 A CN201810765621 A CN 201810765621A CN 108585926 A CN108585926 A CN 108585926A
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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
- C04B28/06—Aluminous 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
- C04B2111/40—Porous or lightweight 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 invention discloses a kind of foam concrete and preparation method, foam concrete is grouped as by each group of following mass ratio：50 parts of 80 parts of cement, 20 parts of flyash, 1.25 parts of coagulant, 0.35 part of water-reducing agent, 0.4 part of fiber, 3.5 parts of additive, 0.025 part of foam stabilizer, 10 parts of foaming agent solution and water.Foaming agent solution of the present invention is that the SDS (lauryl sodium sulfate), APFA (animal protein foaming agent) and water centainly matched is mixed, utilize air compressor preformed foam, then it is mixed with cement slurry, it is 22.5~45 DEG C to stir water temperature, the secondary agitation time is 10~75s, and foam volume 2250~2875ml prepares foam concrete.Novel foam concrete foaming agent of the present invention makes low cost easy to operate, and less investment, reliable in quality, low energy consumption, can be applied in energy saving building and assembled architecture.
Description
Technical field
The invention belongs to building material fields, concretely relate to a kind of preparation method of foam concrete.
Background technology
Although construction industry is the pillar industries of the national economy, but also bring along many harm, for example is consumed about every year
3500000000 tons of mineral resources and Tu Yuan, wherein cement material will consume about 1,300,000,000 tons of mineral resources every year, and materials for wall will disappear
The Tu Yuan of about 1,700,000,000 tons of consumption.In addition to this, China generates all types of industries solid waste about more than 100,000,000 ton every year, and with heating, sky
It is adjusted to main building energy consumption accounts for about national total energy consumption 28%.Therefore, to realize building energy conservation, alleviate China's energy crisis, grind
Studying carefully novel, safety, economy, energy-efficient construction material has far-reaching and favorable influence.Comprehensive analysis, foam concrete have excellent
Good heat insulation fire retardant, vibration strength, sound-proofing, compression strength and service life, and it is nontoxic, easy for construction, it is a kind of
Novel energy saving and environment friendly construction material.
Chinese invention patent 201010607495.6,201110050706.5,201410052950.9,
201410151615.4,201410530304.9,201510999989.6 be all by decomposing hydrogen dioxide solution generate oxygen drawn
Gas.Chinese patent 201710429087.8 is to react production carbon dioxide with aluminium salt by carbonate or bicarbonate to be drawn
Gas.Chinese invention patent 201210559528.3,201310538799.5,201410383446.7, be all by be added surface
The mode of activating agent introduces air.Main chemically react of the above invention prepares foam concrete with surfactant, exists
Problem is mainly shown as：Though the foam concrete thermal coefficient that the former prepares is relatively low, air vent aperture is smaller, and technological operation is more multiple
Miscellaneous, cost is higher；Though foam concrete prepared by the latter is simple for process at low cost, product comprehensive performance is poor.
Invention content
To solve drawbacks described above existing in the prior art, it is an object of the invention to provide one using compounding foaming agent
The method that kind prepares foam concrete, obtains the preferable energy-saving building material of comprehensive performance.
The present invention is realized by following technical proposals.
A kind of foam concrete includes the raw material of following mass fraction：
80 parts of cement, 20 parts of flyash, 1.25 parts of coagulant, 0.35 part of water-reducing agent, 0.4 part of fiber, 3.5 parts of additive,
50 parts of 0.025 part of foam stabilizer, 10 parts of foaming agent solution and water.
Preferably, the cement is 76 parts of fast gravity die sulphate aluminium cements and 4 parts of Portland cements according to mass ratio
It mixes.
Preferably, the flyash is level-one spy's fine powdered coal, and fineness is more than 200 mesh；The coagulant is Al2(SO4)3、
CaCl2, triethanolamine and Na2CO3In one kind；The water-reducing agent is polycarboxylic acids, one in melamine and naphthalene water reducer
Kind；The fiber is one kind in alkali-resistant glass fibre, vinal and polypropylene fibre；The additive is methyl silicon
One kind in sour sodium, calcium stearate and pure-acrylic emulsion；The foam stabilizer be hydroxypropyl methyl cellulose ether, gum arabic powder,
One kind in neopelex and Span 80.
Preferably, the foaming agent solution is according to mass ratio 4:6 ratio weighs lauryl sodium sulfate SDS and moves respectively
Object protein foaming agent APFA, obtains composite foamable agent, is then 1 according to mass ratio with water:100 preparations obtain foaming agent solution.
The present invention gives a kind of preparation method of foam concrete, includes the following steps：
A. the preparation of foaming agent solution：
According to mass ratio 4:6 ratio weighs SDS and APFA respectively, is then 1 according to mass ratio with water:100 with obtained
To foaming agent solution；
B. preformed foam：
10 parts of foaming agent solutions are taken, air valve of air compressor spout are directed at foaming agent solution, control pressure is in 0.5MPa；
Air valve of air compressor nozzle generates a large amount of foams, and two layers of weaved cotton cloth is wrapped up in foam pipe end, will be after weaved cotton cloth
The smaller foam in aperture is collected into container；
C. the preparation of cement bubble slurry：
By mass fraction weigh 80 cement, 20 parts of flyash, 1.25 parts of coagulant, 3.5 parts of water-reducing agents, 0.4 part of fiber,
0.025 portion of foam stabilizer and 3.5 parts of additives, and it is uniformly mixed to get mixture, certain temperature is then added into mixture
50 parts of water is once stirred, and is added the prefabricated foams of step B and is carried out secondary agitation, and cement bubble slurry is ultimately formed；
D. mold pours and performance test：
Above-mentioned cement is steeped slurry progress mold to pour, is demoulded after natural curing for 24 hours, until foam coagulation is tested after 28 days
Soil material dry density, compression strength and thermal coefficient.
Preferably, the coolant-temperature gage is 22.5~45 DEG C, once stirs 120s, 10~75s of secondary agitation, foam volume is
2250~2875ml.
Preferably, the density rating of the foamed concrete material ranging from 409~711kg/m3, compression strength is not less than
0.36MPa, thermal coefficient are not more than 0.1508W/ (mK).
Compared with prior art, the invention has the advantages that：
(1) foaming agent solution used in the present invention is that SDS, APFA and water are combined, and not only improves coefficient of foaming, but also
The stability for improving foam is most important to the formation of foam concrete pore structure.
(2) pipe end of air compressor is wrapped up into two layers of weaved cotton cloth in the present invention, play filter out it is smaller and dense
Foam plays a decisive role to the improvement of foam concrete pore structure.
(3) present invention control stirring water temperature is 22.5~45 DEG C, and the secondary agitation time is 10~75s, foam volume 2250
~2875ml prepares foam concrete, because temperature and mixing time influence the stability of foam, cementitious material condensation hardening
Rate and slurry viscous resistance, and the porosity of foam concrete depends primarily on foam volume.
Therefore, the foam concrete that prepared by the present invention can be not only used for keeping the temperature and bearing wall product, and can be applied to highway
Construction project.
Specific implementation mode
Below in conjunction with specific embodiment, the present invention will be described in detail, herein illustrative examples and explanation of the invention
For explaining the present invention, but it is not as a limitation of the invention.
A kind of preparation method of foam concrete of the present invention, steps are as follows：
A. the preparation of foaming agent solution：With electronic balance with 4:6 mass ratio weighs SDS and APFA respectively, is answered
Foaming agent is closed, is then 1 according to mass ratio with water:100 prepare foaming agent solution.
B. preformed foam：Air compressor is opened into valve first, air valve is opened after pressure reaches 0.5MPa, simultaneously will
Pressure is controlled in 0.5MPa or so.Two layers of weaved cotton cloth is wrapped up in foam pipe end, it will be by the smaller bubble of weaved cotton cloth back aperture
Foam is collected into container.
C. the preparation of cement bubble slurry：76 parts of sulphate aluminium cements, 4 parts of portland cements, 20 parts of powder are weighed by mass fraction
Coal ash (level-one spy's fine powdered coal, fineness are more than 200 mesh), 1.25 parts of coagulant (Al2(SO4)3、CaCl2, triethanolamine or carbonic acid
Sodium), 3.5 parts of water-reducing agents (polycarboxylic acids, melamine or naphthalene water reducer), 0.4 part of 6mm alkali-resistant glass fibre, polyvinyl alcohol it is fine
Dimension or 0.025 part of polypropylene fibre, foam stabilizer (hydroxypropyl methyl cellulose ether, gum arabic powder, neopelex
Or Span 80) and 3.5 parts of additives (sodium methyl silicate, calcium stearate or pure-acrylic emulsion) and be uniformly mixed to get mixture, so
The water that temperature is 22.5~45 DEG C is added by mass fraction in backward mixture and carries out primary stirring 120s, it is pre- to add step B
2250~2875ml foams prepared by 10 parts of foaming agent solutions of system carry out 10~75s of secondary agitation, ultimately form cement bubble slurry.
D. mold pours and performance test：Above-mentioned cement is steeped slurry progress mold to pour, is demoulded after natural curing for 24 hours,
Until test foam concrete dry density, compression strength and thermal coefficient after certain age.
Specific embodiment is given below to further illustrate the present invention.
Embodiment uses approach of the present invention, i.e. control stirring water temperature, secondary agitation time and foam volume that property is made
The different foam concrete sample of energy.
Embodiment 1
Weigh 76 parts of fast gravity die sulphate aluminium cement, 4 parts of Portland cement, 20 parts of flyash, coagulant Al2
(SO4)31.25 parts, 0.35 part of water-reducing agent polycarboxylic acids, 0.4 part of polypropylene fibre, 0.025 part of foam stabilizer hydroxypropyl methyl cellulose
3.5 parts of ether and additive sodium methyl silicate are simultaneously uniformly mixed to get mixture, and it is 22.5 DEG C that temperature is then added into mixture
50 parts of water carry out primary stirring 120s, add foam 2250ml and carry out secondary agitation 30s, form cement bubble slurry, then into
Row mold pours, and is demoulded after natural curing for 24 hours, until test foam concrete dry density after certain age, compression strength and
Thermal coefficient.
Embodiment 2
Weigh 76 parts of fast gravity die sulphate aluminium cement, 4 parts of Portland cement, 20 parts of flyash, coagulant CaCl2
1.25 parts, 0.35 part of water-reducing agent melamine, 0.4 part of alkali-resistant glass fibre, 0.025 part of foam stabilizer gum arabic powder and additional
3.5 parts of agent calcium stearate is simultaneously uniformly mixed to get mixture, and 50 parts of water that temperature is 30 DEG C are then added into mixture and carry out
Primary stirring 120s, adds foam 2250ml and carries out secondary agitation 30s, forms cement bubble slurry, then carries out mold and pours, passes through
Natural curing demoulds afterwards for 24 hours, until test foam concrete dry density, thermal coefficient and compression strength after certain age.
Embodiment 3
A kind of preparation method of foam concrete weighs 76 parts of fast gravity die sulphate aluminium cement, Portland cement 4
Part, 20 parts of flyash, 1.25 parts of coagulant triethanolamine, 0.35 part of naphthalene water reducer, 0.4 part, 0.025 part of vinal
3.5 parts of foam stabilizer neopelex and additive pure-acrylic emulsion are simultaneously uniformly mixed to get mixture, then to mixture
It is middle that the primary stirring 120s of 50 parts of water progress that temperature is 45 DEG C is added, it adds foam 2250ml and carries out secondary agitation 45s, formed
Cement bubble slurry then carries out mold and pours, demoulded after natural curing for 24 hours, until test foam concrete is dry after certain age
Density, thermal coefficient and compression strength.
Embodiment 4
A kind of preparation method of foam concrete weighs 76 parts of fast gravity die sulphate aluminium cement, Portland cement 4
Part, 20 parts of flyash, 1.25 parts of coagulant sodium carbonate, 0.35 part of water-reducing agent polycarboxylic acids, 0.4 part, 0.025 part of alkali-resistant glass fibre
3.5 parts of foam stabilizer Span 80 and additive pure-acrylic emulsion are simultaneously uniformly mixed to get mixture, and temperature is then added into mixture
Primary stirring 120s is carried out for 32 DEG C of 50 parts of water, foam 2250ml is added and carries out secondary agitation 10s, forms cement bubble slurry,
Then it carries out mold to pour, be demoulded after natural curing for 24 hours, until test foam concrete dry density, heat conduction after certain age
Coefficient and compression strength.
Embodiment 5
A kind of preparation method of foam concrete weighs 76 parts of fast gravity die sulphate aluminium cement, Portland cement 4
Part, 20 parts of flyash, coagulant Al2(SO4)31.25 parts, 0.35 part of water-reducing agent melamine, 0.4 part of polypropylene fibre,
3.5 parts of 0.025 part of foam stabilizer neopelex and additive sodium methyl silicate are simultaneously uniformly mixed to get mixture, then
50 parts of water that temperature is 25 DEG C are added into mixture and carry out primary stirring 120s, adds foam 2250ml and carries out secondary agitation
75s forms cement bubble slurry, then carries out mold and pours, is demoulded after natural curing for 24 hours, until test foam after certain age
Concrete dry density, thermal coefficient and compression strength.
Embodiment 6
A kind of preparation method of foam concrete weighs 76 parts of fast gravity die sulphate aluminium cement, Portland cement 4
Part, 20 parts of flyash, 1.25 parts of coagulant triethanolamine, 0.35 part of water-reducing agent polycarboxylic acids, 0.4 part of vinal, 0.025
3.5 parts of part foam stabilizer Span 80 and additive sodium methyl silicate are simultaneously uniformly mixed to get mixture, are then added into mixture
50 parts of water that temperature is 38 DEG C carry out primary stirring 120s, add foam 2375ml and carry out secondary agitation 60s, form cement bubble
Slurry then carries out mold and pours, demoulded after natural curing for 24 hours, until test foam concrete dry density after certain age, lead
Hot coefficient and compression strength.
Embodiment 7
A kind of preparation method of foam concrete weighs 76 parts of fast gravity die sulphate aluminium cement, Portland cement 4
Part, 20 parts of flyash, coagulant CaCl21.25 parts, 0.35 part of water-reducing agent polycarboxylic acids, 0.4 part of polypropylene fibre, 0.025 part steady
3.5 parts of infusion hydroxypropyl methyl cellulose ether and additive calcium stearate are simultaneously uniformly mixed to get mixture, then to mixture
It is middle that the primary stirring 120s of 50 parts of water progress that temperature is 28 DEG C is added, it adds foam 2500ml and carries out secondary agitation 50s, formed
Cement bubble slurry then carries out mold and pours, demoulded after natural curing for 24 hours, until test foam concrete is dry after certain age
Density, thermal coefficient and compression strength.
Embodiment 8
A kind of preparation method of foam concrete weighs 76 parts of fast gravity die sulphate aluminium cement, Portland cement 4
Part, 20 parts of flyash, 1.25 parts of coagulant sodium carbonate, 0.35 part of water-reducing agent melamine, 0.4 part of alkali-resistant glass fibre, 0.025
3.5 parts of part foam stabilizer gum arabic powder and additive sodium methyl silicate are simultaneously uniformly mixed to get mixture, then to mixture
It is middle that the primary stirring 120s of 50 parts of water progress that temperature is 42 DEG C is added, it adds foam 2625ml and carries out secondary agitation 20s, formed
Cement bubble slurry then carries out mold and pours, demoulded after natural curing for 24 hours, until test foam concrete is dry after certain age
Density, thermal coefficient and compression strength.
Embodiment 9
A kind of preparation method of foam concrete weighs 76 parts of fast gravity die sulphate aluminium cement, Portland cement 4
Part, 20 parts of flyash, coagulant Al2(SO4) 3 1.25 parts, 0.35 part of water-reducing agent melamine, 0.4 part of vinal,
3.5 parts of 0.025 part of foam stabilizer neopelex and additive pure-acrylic emulsion are simultaneously uniformly mixed to get mixture, then to
50 parts of water that temperature is 40 DEG C are added in mixture and carry out primary stirring 120s, adds foam 2750ml and carries out secondary agitation
15s forms cement bubble slurry, then carries out mold and pours, is demoulded after natural curing for 24 hours, until test foam after certain age
Concrete dry density, thermal coefficient and compression strength.
Embodiment 10
A kind of preparation method of foam concrete weighs 76 parts of fast gravity die sulphate aluminium cement, Portland cement 4
Part, 20 parts of flyash, coagulant CaCl21.25 parts, 0.35 part of water-reducing agent polycarboxylic acids, 0.4 part of polypropylene fibre, 0.025 part steady
3.5 parts of infusion gum arabic powder and additive sodium methyl silicate are simultaneously uniformly mixed to get mixture, then add into mixture
Enter 50 parts of water that temperature is 23 DEG C and carry out primary stirring 120s, adds foam 2875ml and carry out secondary agitation 55s, form cement
Bubble slurry then carries out mold and pours, demoulded after natural curing for 24 hours, until test foam concrete dry density after certain age,
Thermal coefficient and compression strength.
By the foam concrete performance parameter detection that will be prepared in embodiment 1-10, table 1 is obtained.
The foam concrete performance parameter prepared in 1 embodiment 1-10 of table
As can be seen from the above Table 1, prepared by the present invention, and the density rating ranging from 409 of foamed concrete material~
711kg/m3, compression strength is not less than 0.36MPa, and thermal coefficient is no more than 0.1508W/ (mK).Bubble prepared by the present invention
Foam concrete material not only has higher mechanical mechanics property, is provided simultaneously with excellent density and thermal conduction characteristic, is a kind of add
Work foamed concrete material of good performance.
It these are only the preferential embodiment of the present invention, be not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.Any modification for all within the spirits and principles of the present invention, being made,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of foam concrete, which is characterized in that include the raw material of following mass fraction：
80 parts of cement, 20 parts of flyash, 1.25 parts of coagulant, 0.35 part of water-reducing agent, 0.4 part of fiber, 3.5 parts of additive, foam stabilizing
50 parts of 0.025 part of agent, 10 parts of foaming agent solution and water.
2. foam concrete according to claim 1, which is characterized in that the cement is 76 parts of fast gravity dies according to mass ratio
Sulphate aluminium cement is mixed with 4 parts of Portland cements.
3. foam concrete according to claim 1, which is characterized in that the flyash is level-one spy's fine powdered coal, carefully
Degree is more than 200 mesh；
The coagulant is Al2(SO4)3、CaCl2, triethanolamine and Na2CO3In one kind；
The water-reducing agent is one kind in polycarboxylic acids, melamine and naphthalene water reducer；
The fiber is one kind in alkali-resistant glass fibre, vinal and polypropylene fibre；
The additive is one kind in sodium methyl silicate, calcium stearate and pure-acrylic emulsion；
The foam stabilizer is in hydroxypropyl methyl cellulose ether, gum arabic powder, neopelex and Span 80
It is a kind of.
4. foam concrete according to claim 1, which is characterized in that the foaming agent solution is by composite foamable agent and water
It is 1 according to mass ratio:100 ratio mixes, and the composite foamable agent is 40% lauryl sodium sulfate according to mass ratio
Animal protein foaming agent with 60% mixes.
5. a kind of preparation method of foam concrete, which is characterized in that include the following steps：
A. the preparation of foaming agent solution：
According to mass ratio 4:6 ratio weighs lauryl sodium sulfate and animal protein foaming agent respectively, obtains composite foamable agent,
Then it is 1 according to mass ratio with water:100 preparations obtain foaming agent solution；
B. preformed foam：
10 parts of foaming agent solutions are taken, air valve of air compressor spout are directed at foaming agent solution, control pressure is in 0.5MPa；Air
Compressor valve nozzle generates a large amount of foams, wraps up two layers of weaved cotton cloth in foam pipe end, will pass through weaved cotton cloth back aperture
Smaller foam is collected into container；
C. the preparation of cement bubble slurry：
80 cement, 20 parts of flyash, 1.25 parts of coagulant, 3.5 parts of water-reducing agents, 0.4 part of fiber, 0.025 are weighed by mass fraction
Part foam stabilizer and 3.5 parts of additives, and it is uniformly mixed to get mixture, 50 parts of the water of certain temperature is then added into mixture
It is once stirred, adds the prefabricated foams of step B and carry out secondary agitation, ultimately form cement bubble slurry；
D. mold pours and performance test：
Above-mentioned cement is steeped slurry progress mold to pour, is demoulded after natural curing for 24 hours, until foam concrete material is tested after 28 days
Expect dry density, compression strength and thermal coefficient.
6. the preparation method of foam concrete according to claim 5, step C is it is characterized in that, the coolant-temperature gage is
22.5~45 DEG C, 120s, 10~75s of secondary agitation are once stirred, foam volume is 2250~2875ml.
7. the preparation method of foam concrete according to claim 5, step D is it is characterized in that, the foam concrete
The density rating of material ranging from 409~711kg/m3, compression strength is not less than 0.36MPa, and thermal coefficient is not more than
0.1508W/m·K。
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