CN107473646A - A kind of building concrete that foaming is cooperateed with by modified hydrotalcite and preparation method thereof - Google Patents
A kind of building concrete that foaming is cooperateed with by modified hydrotalcite and preparation method thereof Download PDFInfo
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- CN107473646A CN107473646A CN201710857000.7A CN201710857000A CN107473646A CN 107473646 A CN107473646 A CN 107473646A CN 201710857000 A CN201710857000 A CN 201710857000A CN 107473646 A CN107473646 A CN 107473646A
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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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/78—Compounds containing aluminium and two or more other elements, with the exception of oxygen and hydrogen
- C01F7/784—Layered double hydroxide, e.g. comprising nitrate, sulfate or carbonate ions as intercalating anions
- C01F7/785—Hydrotalcite
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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
- 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
-
- 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
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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
- 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)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
The present invention provides a kind of building concrete that foaming is cooperateed with by modified hydrotalcite and preparation method thereof, and stratiform hydrotalcite is modified using polyacrylamide, and modified hydrotalcite and vegetable protein foaming agent, water then are stirred into obtained foam；Foam is added to in the cement mortar prepared by stirrings such as cement, flyash, additives simultaneously pouring foaming again, foam concrete is obtained after form removal, maintenance.The present invention provides the above method and overcome can make the unstable technical problem of foam concrete intensity deficiency, foam effect using plant type additive, it is and higher using animality Additive Production cost, limit and use art defect, modified hydrotalcite water absorbing capacity is stronger, large quantity of moisture causes interlamellar spacing to increase into hydrotalcite layers, the hydrotalcite of expansion is acted synergistically with foaming agent, and good foaming effect can be played to concrete.Meanwhile incorporation mineral foaming agent can improve the intensity of ranking concrete to a certain extent.
Description
Technical field
The present invention relates to material processing field, and in particular to it is a kind of by modified hydrotalcite cooperate with foaming building concrete and
Its preparation method.
Background technology
Foam concrete is also known as foam cement, lightweight concrete etc., is a kind of useless profit, environmental protection, energy-conservation, cheap and have
Non-flame properties novel building energy-saving material.Lightweight concrete (foam concrete) is according to application by way of chemically or physically
Need the gas such as air or nitrogen, carbon dioxide gas, oxygen being introduced into concrete mortar, be molded by reasonable maintenance, and shape
Into containing a large amount of tiny sealed porositys, and the concrete product with suitable intensity.It is exhausted that foam concrete belongs to air bubble-shaped
Hot material, outstanding feature are that the foam hole of closing is formed in inside concrete, make concrete light and thermal insulation separation thermalization.Generally
Density rating is in 300~1200kg/m3 , the foam concrete of scope, thermal conductivity factor is between 0.068W/ (mk).
At present when preparing foam concrete and being foamed, two kinds of foaming sides of chemical blowing or physical blowing are respectively adopted
Formula.In the foam concrete production of prior art, the foaming agent of addition is divided into two kinds of plant type and animal-type.Practical application
In, plant type additive can make foam concrete intensity insufficient, while foam effect less stable, produce expansion rate not sometimes
The situation of foot and foam inequality, it can so directly affect use and the yield rate of product.Although animal-type additive foam effect
It is stable, but production cost is higher, limits using field.Due to above-mentioned deficiency, the application and development of foam concrete are constrained.
Accordingly, it is desirable to provide a kind of foam concrete additive and foam concrete are to solve the above problems.
The content of the invention
In view of the shortcomings of the prior art, the present invention provide it is a kind of by modified hydrotalcite cooperate with foaming building concrete and its
Preparation method, so as to solve that using plant type additive the unstable technology of foam concrete intensity deficiency, foam effect can be made
Problem, and it is higher using animality Additive Production cost, limit using art problem.
To solve the above problems, the present invention uses following technical scheme：
On the one hand a kind of building concrete that foaming is cooperateed with by modified hydrotalcite is provided, the concrete is by including following parts by weight
Several raw materials are prepared：
Hydrotalcite 3-10 parts, acrylic acid 2-5 parts, ammoniacal liquor 2-5 parts, cement 30-50 parts, quartz sand 30-50 parts, flyash 2-10
Part, water reducer 0-10 parts, water-loss reducer 0-10 parts, vegetable protein foaming agent 5-10 parts, water 30-60 parts.
Preferably, the hydrotalcite is the layer structure that particle diameter is 60-300 microns.
Preferably, the flyash is to meet《Silicate building productses flyash》In II grade of flyash, it is described to subtract
Aqua is polycarboxylic acid high-performance water reducer, and water-loss reducer is cellulose ethers material.
Preferably, described vegetable protein foaming agent is saponin vegetable protein, one kind of Tea Saponin vegetable protein or two
The mixture of kind.
On the other hand, there is provided a kind of preparation method that the building concrete to foam is cooperateed with by modified hydrotalcite, including it is as follows
Step：
（1）Graft modification is carried out to hydrotalcite：By formula by acrylamide graft into stratiform hydrotalcite；
（2）Prepare foam：Obtained foam is mixed evenly in modified hydrotalcite and vegetable protein foaming agent, water-loss reducer, water；
（3）Prepare cement mortar：Cement, quartz sand, flyash, water reducer, water are mixed evenly in proportion cement mortar is made；
（4）Pouring foaming：By step（2）The foam being prepared is added to step（3）In the cement mortar of preparation, stir to not having
Buoyant foam, it is poured into mould, form removal, natural curing obtain foam concrete after 28 days.
Preferably, the step（1）Graft modification is specially that hydrotalcite is immersed in 0.2-1.3mol/L nitric acid first,
Nitric acid is heated to 50-80 DEG C, 1-4 hours is reacted, is submerged into after filtering in acrylic acid, by anion metathesis process so that third
Olefin(e) acid intercalation enters hydrotalcite layers, then the hydrotalcite of intercalation is placed in the hydrotalcite of ammoniacal liquor reaction acquisition acrylamide intercalation,
By the polymerisation of acrylamide, the graft reaction of polyacrylamide is completed.
Preferably, the time of the anion metathesis process is 2-5 hours, and reaction temperature is 30-45 DEG C.
Preferably, after the hydrotalcite of the intercalation is placed in ammoniacal liquor, the temperature of reaction environment is kept to be no more than 60 DEG C, anti-
Need to be stirred continuously during answering, mixing speed is 3-15 revs/min.
In the foam concrete production of prior art, plant type additive can make foam concrete intensity insufficient, steep simultaneously
Foam effect less stable, the situation of expansion rate deficiency and foam inequality is produced sometimes, can so directly affect the use of product
And yield rate.Although animal-type additive foam effect is stable, production cost is higher, limits using field.In consideration of it, this
Invention provides a kind of building concrete that foaming is cooperateed with by modified hydrotalcite and preparation method thereof, using polyacrylamide to stratiform
Hydrotalcite is modified, and first by Polyacrylamide Grafted to neatly stone veneer, then foam is added to by cement, flyash, outer
Add the stirrings such as agent prepare cement mortar in and pouring foaming, form removal, maintenance after obtain foam concrete.Modified hydrotalcite is inhaled
Outlet capacity is stronger, and large quantity of moisture causes interlamellar spacing to increase into hydrotalcite layers, and the hydrotalcite of expansion cooperates with work with foaming agent
With good foaming effect can be played to concrete.Meanwhile incorporation mineral foaming agent can improve ranking coagulation to a certain extent
The intensity of soil.
A kind of building concrete that foaming is cooperateed with by modified hydrotalcite of the present invention and preparation method thereof, compared with prior art, its
The characteristics of prominent and excellent effect are：
1st, a kind of building concrete that foaming is cooperateed with by modified hydrotalcite provided by the invention, due to using modified neatly masonry
For raw material, hydrotalcite and the foaming agent of expansion are acted synergistically, and good foaming effect can be played to concrete.Meanwhile hydrotalcite
Foaming agent can improve the intensity of concrete to a certain extent.
2nd, this programme replaces the higher animal protein foaming agent of production cost with modified hydrotalcite, preferably reduce into
This, is more suitable for the application and development of foam concrete.
3rd, scheme preparation technology disclosed by the invention is simple, and the extensive property of raw material sources is stable, and easily storage transports, portable
Property is strong, it is easy to accomplish scale industrial production.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but this should not be interpreted as to the present invention
Scope be only limitted to following example.In the case where not departing from above method thought of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
（1）Graft modification is carried out to hydrotalcite：The layer structure hydrotalcite that 3 parts by weight particle diameters are 300 microns is immersed in first
In 0.2mol/L nitric acid, heating nitric acid to 80 DEG C, react 4 hours, be submerged into after filtering in 2 parts by weight of acrylic acid, by the moon from
Sub- replacement process, the time of the anion metathesis process is 5 hours, and reaction temperature is 45 DEG C so that acrylic acid intercalation enters
Hydrotalcite layers, then after the hydrotalcite of intercalation is placed in into 5 parts by weight ammoniacal liquor, keep the temperature of reaction environment to be no more than 60 DEG C,
It is stirred continuously in course of reaction, mixing speed is 15 revs/min, and reaction obtains the hydrotalcite of acrylamide intercalation, by propylene
The polymerisation of acid amides, complete the graft reaction of polyacrylamide；
（2）Prepare foam：Hydrotalcite by modified grafting is mixed with 10 parts by weight saponin vegetable proteins and 30 parts by weight water
Conjunction stirs obtained foam；
（3）Prepare cement mortar：30 parts by weight of cement, 30 parts by weight quartz sands, 10 parts by weight are met in proportion《Silicate is built
Product flyash》In II grade of flyash, 1 parts by weight polycarboxylic acid high-performance water reducer, 30 parts by weight water mix it is equal
It is even that cement mortar is made；
（4）Pouring foaming：By step（2）The foam being prepared is added to step（3）In the cement mortar of preparation, stir to not having
Buoyant foam, it is poured into mould, form removal, natural curing obtain foam concrete after 28 days.
Performance test, dry density 354kg/m are carried out to length 200mm, height 100mm, thickness 20mm sample3, resist
Compressive Strength is 52.8MPa, thermal conductivity factor 0.048Wm-1·K-1。
Embodiment 2
（1）Graft modification is carried out to hydrotalcite：The layer structure hydrotalcite that 10 parts by weight particle diameters are 60 microns is immersed in first
In 1.3mol/L nitric acid, heating nitric acid reacts 1 hour, is submerged into after filtering in 2.5 parts by weight of acrylic acid, by the moon to 50 DEG C
Ion exchange process, the time of the anion metathesis process is 2.5 hours, and reaction temperature is 45 DEG C so that acrylic acid intercalation
Into hydrotalcite layers, then after the hydrotalcite of intercalation is placed in into 2 parts by weight ammoniacal liquor, the temperature of reaction environment is kept to be no more than 60
DEG C, it is stirred continuously during the course of the reaction, mixing speed is 12 revs/min, and reaction obtains the hydrotalcite of acrylamide intercalation, is passed through
The polymerisation of acrylamide, complete the graft reaction of polyacrylamide；
（2）Prepare foam：By modified hydrotalcite and 10 parts by weight saponin vegetable proteins and Tea Saponin vegetable protein mixture, 1
Obtained foam is mixed evenly in part by weight of cellulose ether material, 20 parts by weight water；
（3）Prepare cement mortar：35 parts by weight of cement, 35 parts by weight quartz sands, 10 parts by weight are met in proportion《Silicate is built
Product flyash》In II grade of flyash, 10 parts by weight polycarboxylic acid high-performance water reducers, 35 parts by weight water mix it is equal
It is even that cement mortar is made；
（4）Pouring foaming：By step（2）The foam being prepared is added to step（3）In the cement mortar of preparation, stir to not having
Buoyant foam, it is poured into mould, form removal, natural curing obtain foam concrete after 28 days.
Performance test is carried out to length 200mm, height 100mm, thickness 20mm sample, dry density 375kg/m3, resisted
Compressive Strength is 56.3MPa, thermal conductivity factor 0.051Wm-1·K-1。
Embodiment 3
（1）Graft modification is carried out to hydrotalcite：The layer structure hydrotalcite that 5 parts by weight particle diameters are 120 microns is immersed in first
In 0.5mol/L nitric acid, heating nitric acid to 60 DEG C, react 3 hours, be submerged into after filtering in 4 parts by weight of acrylic acid, by the moon from
Sub- replacement process, the time of the anion metathesis process is 5 hours, and reaction temperature is 30 DEG C so that acrylic acid intercalation enters
Hydrotalcite layers, then after the hydrotalcite of intercalation is placed in into 5 parts by weight ammoniacal liquor, keep the temperature of reaction environment to be no more than 60 DEG C,
It is stirred continuously in course of reaction, mixing speed is 15 revs/min, and reaction obtains the hydrotalcite of acrylamide intercalation, by propylene
The polymerisation of acid amides, complete the graft reaction of polyacrylamide；
（2）Prepare foam：By modified hydrotalcite and 8 parts by weight Tea Saponin vegetable proteins, 5 part by weight of cellulose ether materials, 15
Obtained foam is mixed evenly in parts by weight water；
（3）Prepare cement mortar：40 parts by weight of cement, 40 parts by weight quartz sands, 8 parts by weight are met in proportion《Silicate is built
Product flyash》In II grade of flyash, 24 parts by weight water are mixed evenly and cement mortar are made；
（4）Pouring foaming：By step（2）The foam being prepared is added to step（3）In the cement mortar of preparation, stir to not having
Buoyant foam, it is poured into mould, form removal, natural curing obtain foam concrete after 28 days.
Performance test is carried out to length 200mm, height 100mm, thickness 20mm sample, dry density 374kg/m3, resisted
Compressive Strength is 50.3MPa, thermal conductivity factor 0.036Wm-1·K-1。
Embodiment 4
（1）Graft modification is carried out to hydrotalcite：The layer structure hydrotalcite that 4 parts by weight particle diameters are 250 microns is immersed in first
In 1.1mol/L nitric acid, heating nitric acid to 80 DEG C, react 1 hour, be submerged into after filtering in 5 parts by weight of acrylic acid, by the moon from
Sub- replacement process, the time of the anion metathesis process is 5 hours, and reaction temperature is 30 DEG C.So that acrylic acid intercalation enters
Hydrotalcite layers, then after the hydrotalcite of intercalation is placed in into 4 parts by weight ammoniacal liquor, keep the temperature of reaction environment to be no more than 60 DEG C,
It is stirred continuously in course of reaction, mixing speed is 10 revs/min, and reaction obtains the hydrotalcite of acrylamide intercalation, by propylene
The polymerisation of acid amides, complete the graft reaction of polyacrylamide；
（2）Prepare foam：Modified hydrotalcite and 6 parts by weight saponin vegetable proteins, Tea Saponin vegetable protein, 3 parts by weight is fine
Tie up plain ether material, obtained foam is mixed evenly in 25 parts by weight water；
（3）Prepare cement mortar：35 parts by weight of cement, 40 parts by weight quartz sands, 2 parts by weight are met in proportion《Silicate is built
Product flyash》In II grade of flyash, 8 parts by weight polycarboxylic acid high-performance water reducers, 26 parts by weight water mix it is equal
It is even that cement mortar is made；
（4）Pouring foaming：By step（2）The foam being prepared is added to step（3）In the cement mortar of preparation, stir to not having
Buoyant foam, it is poured into mould, form removal, natural curing obtain foam concrete after 28 days.
Performance test is carried out to length 200mm, height 100mm, thickness 20mm sample, dry density 367kg/m3, resisted
Compressive Strength is 55.1MPa, thermal conductivity factor 0.051Wm-1·K-1。
Embodiment 5
（1）Graft modification is carried out to hydrotalcite：The layer structure hydrotalcite that 8 parts by weight particle diameters are 180 microns is immersed in first
In 0.8mol/L nitric acid, heating nitric acid reacts 3.5 hours, is submerged into after filtering in 4 parts by weight of acrylic acid, by the moon to 56 DEG C
Ion exchange process, the time of the anion metathesis process is 3.5 hours, and reaction temperature is 45 DEG C.So that acrylic acid intercalation
Into hydrotalcite layers, then after the hydrotalcite of intercalation is placed in into 3.5 parts by weight ammoniacal liquor, the temperature of reaction environment is kept to be no more than 60
DEG C, it is stirred continuously during the course of the reaction, mixing speed is 3 revs/min, and reaction obtains the hydrotalcite of acrylamide intercalation, is passed through
The polymerisation of acrylamide, complete the graft reaction of polyacrylamide；
（2）Prepare foam：By modified hydrotalcite and 10 parts by weight saponin vegetable proteins, 10 part by weight of cellulose ether materials,
Obtained foam is mixed evenly in 25 parts by weight water；
（3）Prepare cement mortar：40 parts by weight of cement, 50 parts by weight quartz sands, 8 parts by weight are met in proportion《Silicate is built
Product flyash》In II grade of flyash, 9 parts by weight polycarboxylic acid high-performance water reducers, 30 parts by weight water mix it is equal
It is even that cement mortar is made；
（4）Pouring foaming：By step（2）The foam being prepared is added to step（3）In the cement mortar of preparation, stir to not having
Buoyant foam, it is poured into mould, form removal, natural curing obtain foam concrete after 28 days.
Performance test is carried out to length 200mm, height 100mm, thickness 20mm sample, dry density 363kg/m3, resisted
Compressive Strength is 51.9MPa, thermal conductivity factor 0.045Wm-1·K-1。
Comparative example 1
（1）Graft modification is carried out to hydrotalcite：It is 180 microns of layer structure hydrotalcite and 10 weights first by 8 parts by weight particle diameters
Obtained foam is mixed evenly in amount part saponin vegetable protein, 10 part by weight of cellulose ether materials, 25 parts by weight water；
（2）Prepare cement mortar：40 parts by weight of cement, 50 parts by weight quartz sands, 8 parts by weight are met in proportion《Silicate is built
Product flyash》In II grade of flyash, 9 parts by weight polycarboxylic acid high-performance water reducers, 30 parts by weight water mix it is equal
It is even that cement mortar is made；
（3）Pouring foaming：By step（2）The foam being prepared is added to step（3）In the cement mortar of preparation, stir to not having
Buoyant foam, it is poured into mould, form removal, natural curing obtain foam concrete after 28 days.
Performance test is carried out to length 200mm, height 100mm, thickness 20mm sample, dry density 663kg/m3, resisted
Compressive Strength is 21.2MPa, thermal conductivity factor 0.12Wm-1·K-1。
Comparative example 2
（1）System is mixed evenly in 10 parts by weight saponin vegetable proteins, 10 part by weight of cellulose ether materials, 25 parts by weight water
Obtain foam；
（2）Prepare cement mortar：40 parts by weight of cement, 50 parts by weight quartz sands, 8 parts by weight are met in proportion《Silicate is built
Product flyash》In II grade of flyash, 9 parts by weight polycarboxylic acid high-performance water reducers, 30 parts by weight water mix it is equal
It is even that cement mortar is made；
（3）Pouring foaming：By step（2）The foam being prepared is added to step（3）In the cement mortar of preparation, stir to not having
Buoyant foam, it is poured into mould, form removal, natural curing obtain foam concrete after 28 days.
Performance test is carried out to length 200mm, height 100mm, thickness 20mm sample, dry density 745kg/m3, resisted
Compressive Strength is 15.4MPa, thermal conductivity factor 0.225Wm-1·K-1。
Claims (8)
1. a kind of building concrete that foaming is cooperateed with by modified hydrotalcite, it is characterised in that the concrete is by including following weight
The raw material of amount number is prepared：
Hydrotalcite 3-10 parts, acrylic acid 2-5 parts, ammoniacal liquor 2-5 parts, 30-50 parts by weight of cement, 30-50 parts by weight quartz sand, powder
Coal ash 2-10 parts, water reducer 0-10 parts, water-loss reducer 0-10 parts, vegetable protein foaming agent 5-10 parts, water 30-60 parts.
2. a kind of building concrete that foaming is cooperateed with by modified hydrotalcite according to claim 1, it is characterised in that described
Hydrotalcite is the layer structure that particle diameter is 60-300 microns.
3. a kind of building concrete that foaming is cooperateed with by modified hydrotalcite according to claim 1, it is characterised in that described
Flyash is to meet《Silicate building productses flyash》In II grade of flyash, the water reducer is polycarboxylic acid high-performance
Water reducer, water-loss reducer are cellulose ethers material.
4. a kind of building concrete that foaming is cooperateed with by modified hydrotalcite according to claim 1, it is characterised in that described
Vegetable protein foaming agent for saponin vegetable protein, one or two kinds of mixtures of Tea Saponin vegetable protein.
A kind of 5. preparation that the building concrete to foam is cooperateed with by modified hydrotalcite according to any claims of claim 1-4
Method, it is characterised in that comprise the following steps：
（1）Graft modification is carried out to hydrotalcite：By formula by acrylamide graft into stratiform hydrotalcite；
（2）Prepare foam：Obtained foam is mixed evenly in modified hydrotalcite and vegetable protein foaming agent, water-loss reducer, water；
（3）Prepare cement mortar：Cement, quartz sand, flyash, water reducer, water are mixed evenly in proportion cement mortar is made；
（4）Pouring foaming：By step（2）The foam being prepared is added to step（3）In the cement mortar of preparation, stir to not having
Buoyant foam, it is poured into mould, form removal, natural curing obtain foam concrete after 28 days.
6. the preparation method of the concrete of modified hydrotalcite collaboration foaming according to claim 5, it is characterised in that described
Step（1）Graft modification is specially that hydrotalcite is immersed in 0.2-1.3mol/L nitric acid first, heats nitric acid to 50-80 DEG C,
1-4 hours are reacted, are submerged into after filtering in acrylic acid, by anion metathesis process so that acrylic acid intercalation enters hydrotalcite
Interlayer, then by the hydrotalcite of intercalation be placed in ammoniacal liquor reaction obtain acrylamide intercalation hydrotalcite, by the polymerization of acrylamide
Reaction, complete the graft reaction of polyacrylamide.
7. the preparation method of the concrete of modified hydrotalcite collaboration foaming according to claim 6, it is characterised in that described
The time of anion metathesis process is 2-5 hours, and reaction temperature is 30-45 DEG C.
8. the preparation method of the concrete of modified hydrotalcite collaboration foaming according to claim 6, it is characterised in that described
After the hydrotalcite of intercalation is placed in ammoniacal liquor, keeps the temperature of reaction environment to be no more than 60 DEG C, need constantly to stir during the course of the reaction
Mix, mixing speed is 3-15 revs/min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108640563A (en) * | 2018-05-11 | 2018-10-12 | 安徽砼宇特构科技有限公司 | A kind of high performance concrete and preparation method thereof prepared by dump slag powder |
| CN109678349A (en) * | 2019-02-25 | 2019-04-26 | 深圳市辉翰科技发展有限公司 | A method of foam glass is prepared using post-consumer glass and porous ceramic grain |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109678349A (en) * | 2019-02-25 | 2019-04-26 | 深圳市辉翰科技发展有限公司 | A method of foam glass is prepared using post-consumer glass and porous ceramic grain |
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| CN107473646B (en) | 2019-11-05 |
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