CN110436848A - A kind of cement composition, foamed cement slurry, foam concrete pour material and preparation method thereof - Google Patents
A kind of cement composition, foamed cement slurry, foam concrete pour material and preparation method thereof Download PDFInfo
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- CN110436848A CN110436848A CN201910740437.1A CN201910740437A CN110436848A CN 110436848 A CN110436848 A CN 110436848A CN 201910740437 A CN201910740437 A CN 201910740437A CN 110436848 A CN110436848 A CN 110436848A
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- cement
- agent
- cement composition
- slurry
- foam concrete
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The present invention relates to a kind of cement composition, foamed cement slurry, foam concrete to pour material and preparation method thereof, belongs to foam concrete technical field.Cement composition of the invention, the component including following parts by weight: 100 parts of portland cement, 0.5~3 part of foaming agent, 0.2~2 part of thixotropic agent, 0.5~2 part of tackifier, 3~5 parts of early strength agent.Cement composition of the invention, change thixotropy, viscosity and the setting time of foam concrete by addition thixotropic agent, tackifier and early strength agent to improve the stability that foam concrete pours material, so that stirring pulping process not only improves foaming agent foam, it can guarantee the stability that blistering is not easily broken again, to avoid the problem that using the foam concrete of portland cement to pour material generation collapses mould simultaneously, makes foam concrete have lower dry density.
Description
Technical field
The present invention relates to a kind of cement composition, foamed cement slurry, foam concrete to pour material and preparation method thereof, belongs to
In foam concrete technical field.
Background technique
Concrete is man-made structures' structural material that current application is most, use scope is most wide.Foam concrete is as mixed
A special kinds in solidifying soil have many advantages, such as that lightweight, heat preservation, heat-insulated, sound insulation, non-ignitable, antidetonation, benefit are useless, can expire well
The requirement of sufficient building energy conservation and building safety, thus foam concrete using more and more extensive.Foam concrete in the preparation,
Foam first is made in foaming agent generally by the method for mechanical system bubble, then foam is added in cement slurry again, forms foam
Slurry, building block or after pouring through conserving.And when using portland cement production foam concrete, due in foam slurry
It will appear lather collapse during the reasons such as the closure and poor toughness of bubble, air bubble liquid-membrane thickness is thin, building block or cast-in-place
And leads to newly to pour building body and collapse mould.For this problem, logical using fast hard rapid hardening special cement substitution portland cement in the prior art
Crossing shortening cementitious material condensation firm time prevents the mould that collapses, and this method setting rate is fast, admittedly bubble effect is good, but fast hard rapid hardening is special
Kind its distribution of cement is not wide, and at high cost, intensity is lower than ordinary portland cement.Another kind prevent from the collapsing method of mould is in foaming agent
Middle a large amount of carboxycellulose, gelatin etc. of adding viscosifies substance by improving foam viscosity to prevent the mould that collapses, and this method makes foam
Stability be improved, but since system viscosity improves, the foaming capacity of foaming agent is reduced with the addition of thickening substance.
Summary of the invention
It can prevent from foam concrete from pouring material the object of the present invention is to provide one kind to collapse the cement composition of mould, have
Advantage at low cost and good foam performance.
The present invention also provides a kind of foamed cement slurries using above-mentioned cement composition, can equally prevent foam coagulation
Soil pours material and collapses mould, and has the advantages that at low cost, foam performance is good.
The foam concrete collapsed the present invention also provides a kind of light and nothing pours material.
The present invention also provides the preparation methods that a kind of above-mentioned foam concrete of simple process pours material.
In order to achieve the goal above, technical solution used by cement composition of the invention is:
A kind of cement composition, the component including following parts by weight: 100 parts of portland cement, 0.5~3 part of foaming agent,
0.2~2 part of thixotropic agent, 0.5~2 part of tackifier, 3~5 parts of early strength agent.
Cement composition of the invention, composition is simple, at low cost, passes through addition thixotropic agent, tackifier and early strength agent and changes
Thixotropy, viscosity and the setting time of foam concrete improve the stability that foam concrete pours material, so that stirring system
Slurry process not only improves foaming agent foam, and can guarantee the stability that blistering is not easily broken, thus avoiding using silicate cement
The foam concrete of mud, which pours material and leads to the problem of, collapses mould simultaneously, guarantees that foam concrete has lower dry density.Using
When the cement slurry of cement composition of the invention is stirred, the bonding forces such as hydrogen bond, electrostatic attraction between thixotropy endowing agent are broken
Bad, thixotropic agent loses network structure, and the viscosity of concrete mortar is lower at this time, is conducive to foaming agent foam, will not make foaming agent
Foaming capacity is impaired.After stirring, thixotropy endowing agent re-forms network knot under the effect of the bonding forces such as hydrogen bond, electrostatic attraction
Structure, concrete mortar show higher viscosity, and the bubble in slurry can be stabilized, and are beneficial to prevent casting matrix and collapse mould；
Tackifier can make air bubble liquid-membrane adsorption value become larger, and surface tension becomes smaller, and Film strength increases, and drain age velocity becomes in foam
Slowly, gas-premeable declines, and foam stability enhancing is beneficial to prevent casting matrix and collapses mould；Early strength agent is adjustable concrete coagulation
And setting rate, shorten curing time, collapses mould to be beneficial to prevent and pour building body.Thixotropic agent benefit in cement composition of the invention
Foaming agent foam in concrete mortar is simultaneously stabilized bubble, and tackifier can make air bubble liquid-membrane intensity increase prevent gas
Bubble rupture, early strength agent can be shortened the concrete curing time, and three's synergistic effect is collapsed mould to prevent foam concrete from pouring building body.
Preferably, the tackifier are selected from one of hydroxyethyl cellulose, hydroxypropyl methyl cellulose, gelatin or any
Combination.
Preferably, the thixotropic agent is selected from organobentonite, montmorillonite, fumed silica, rilanit special, stearic acid
One of zinc, polyethylene wax or any combination.
Preferably, the early strength agent is lithiumation object early strength agent.Lithiumation object early strength agent can make the induction period of hydrated cementitious disappear
It loses, so that portland cement is directly entered aquation accelerated period after adding the water, further increase the stabilization that foam concrete pours material
Property.The lithiumation object early strength agent is selected from one or both of lithium carbonate, lithium chloride.
Preferably, the foaming agent is physical blowing agent.It, can be into one using physical blowing agent compared to chemical foaming agent
Step improves the stability of bubble.The physical blowing agent is selected from dodecyl benzene sulfonic acid, ethoxylated alkyl sulfate, α-alkenyl
One of sodium sulfonate or any combination.
The technical solution that foamed cement slurry of the invention uses are as follows:
A kind of foamed cement slurry, including water and above-mentioned cement composition；Silicate cement in water and the cement composition
The mass ratio of mud is 60~100:100.
Foamed cement slurry of the invention uses cement composition of the invention, improves foam concrete and pours the steady of material
It is qualitative, to achieve the purpose that prevent the mould that collapses；In addition, foamed cement slurry of the invention also has, at low cost, foam performance is good
The advantages of.
Foam concrete of the invention pours the technical solution of material use are as follows:
It is a kind of that material is poured using above-mentioned foamed cement slurry foam concrete obtained.
Foam concrete of the invention pours material, has the advantages that light, heat-insulated, intensity is high.
Foam concrete of the invention pours the technical solution that the preparation method of material uses are as follows:
A kind of above-mentioned foam concrete pours the preparation method of material, comprising the following steps:
1) slurry and foam solution are prepared
A portland cement, thixotropic agent, tackifier and water) are mixed into slurry；
B foam solution is made in foaming after) mixing foaming agent and water；
2) early strength agent and slurry obtained, foam solution are uniformly mixed, obtain foamed cement slurry；
3) foamed cement is starched into moulding by casting, maintenance to get.
Foam concrete of the invention pours the preparation method of material, simple process, without special producing equipment, just
In promotion and application.The method that the preparation method of foam concrete of the invention is conserved can made by existing foam concrete
Maintenance process during standby carries out.
Step A) in water consumption be total dosage a part, such as the 95% of total water consumption.Step B) in water consumption be except step
With the remaining water outside water in rapid A.
Specific embodiment
Below in conjunction with specific embodiment, further description of the technical solution of the present invention.
The embodiment of cement composition
Embodiment 1
The cement composition of the present embodiment is grouped as by the group of following weight fraction: 100 parts of portland cement, foaming agent
0.5 part, 0.2 part of thixotropic agent, 0.5 part of tackifier, 3 parts of early strength agent；Used foaming agent is dodecyl benzene sulfonic acid, thixotropic agent
For zinc stearate, tackifier are hydroxyl second cellulose, and early strength agent is lithium carbonate.
Embodiment 2
The cement composition of the present embodiment, is composed of the following parts by weight: 100 parts of portland cement, foaming agent 3
Part, 2 parts of thixotropic agent, 2 parts of tackifier, 5 parts of early strength agent；Used foaming agent is ethoxylated alkyl sulfate, and thixotropic agent is
Montmorillonite, tackifier are hydroxyethyl cellulose, and early strength agent is lithium chloride.
Embodiment 3
The cement composition of the present embodiment is grouped as by the group of following weight fraction: 100 parts of portland cement, foaming agent 1
Part, 1.3 parts of thixotropic agent, 0.8 part of tackifier, 4 parts of early strength agent；Used foaming agent is α-sodium olefin sulfonate, and thixotropic agent is gas
Aerosil, tackifier are gelatin, and early strength agent is lithium carbonate.
Embodiment 4
The cement composition of the present embodiment is grouped as by the group of following weight fraction: 100 parts of portland cement, foaming agent
1.5 parts, 0.5 part of thixotropic agent, 1.2 parts of tackifier, 3.5 parts of early strength agent；Used thixotropic agent is rilanit special, and tackifier are
Hydroxyethyl cellulose, early strength agent are lithium carbonate, and foaming agent is the quality of dodecyl benzene sulfonic acid and ethoxylated alkyl sulfate
Mixture than 1:1.
Embodiment 5
The cement composition of the present embodiment is grouped as by the group of following weight fraction: 100 parts of portland cement, foaming agent
2.5 parts, 0.9 part of thixotropic agent, 1.4 parts of tackifier, 4.5 parts of early strength agent；Used thixotropic agent is organobentonite, and tackifier are
Hydroxypropyl methyl cellulose, early strength agent are lithium carbonate, and foaming agent is ethoxylated alkyl sulfate and α-sodium olefin sulfonate matter
Measure the mixture than 1:1.
Embodiment 6
The cement composition of the present embodiment is grouped as by the group of following weight fraction: 100 parts of portland cement, foaming agent 2
Part, 1.7 parts of thixotropic agent, 1.7 parts of tackifier, 4 parts of early strength agent；Used thixotropic agent is polyethylene wax, and tackifier are hydroxypropyl
Methylcellulose, early strength agent are lithium chloride, and foaming agent is the mixed of dodecyl benzene sulfonic acid and α-sodium olefin sulfonate mass ratio 1:1
Close object.
The embodiment of foamed cement slurry
Embodiment 7
The foamed cement slurry of the present embodiment is made of the cement composition and water of embodiment 1；Silicon in water and cement composition
The mass ratio of acid salt cement is 60:100.
Embodiment 8
The foamed cement slurry of the present embodiment is made of the cement composition and water of embodiment 2；Silicon in water and cement composition
The mass ratio of acid salt cement is 65:100.
Embodiment 9
The foamed cement slurry of the present embodiment is made of the cement composition and water of embodiment 3；Silicon in water and cement composition
The mass ratio of acid salt cement is 70:100.
Embodiment 10
Originally be embodiment foamed cement slurry be made of the cement composition and water of embodiment 3；In water and cement composition
The mass ratio of portland cement is 80:100.
Embodiment 11
Originally be embodiment foamed cement slurry be made of the cement composition and water of embodiment 3；In water and cement composition
The mass ratio of portland cement is 90:100.
Embodiment 12
Originally be embodiment foamed cement slurry be made of the cement composition and water of embodiment 3；In water and cement composition
The mass ratio of portland cement is 100:100.
Embodiment 13
The soaked mud of invention of the present embodiment is made of the cement composition and water of embodiment 4；In water and cement composition
The mass ratio of portland cement is 100:100.
Embodiment 14
The soaked mud of invention of the present embodiment is made of the cement composition and water of embodiment 5；In water and cement composition
The mass ratio of portland cement is 100:100.
Embodiment 15
The soaked mud of invention of the present embodiment is made of the cement composition and water of embodiment 6；In water and cement composition
The mass ratio of portland cement is 100:100.
The foamed cement slurry of above embodiments 7~15 can pour the preparation method of material according to following foam concrete
Step 1)~4 in embodiment) method prepared.
Foam concrete pours the embodiment of material
Embodiment 16
The foam concrete of the present embodiment pours material by any one foamed cement slurry system in above-described embodiment 7~15
At.Foam concrete is poured material and can be prepared using the preparation method in following example 17.
Foam concrete pours the embodiment of the preparation method of material
Embodiment 17
The foam concrete of the present embodiment pours the preparation method of material, comprising the following steps:
1) portland cement, thixotropic agent, tackifier, early strength agent, foaming agent and water are taken；
2) charging basket is added in portland cement, thixotropic agent, tackifier and part water (95% of water gross mass), be stirred
At slurry；
3) foaming agent is put into another charging basket and remaining water is added sufficiently foams and form foam solution；
4) foam solution and early strength agent are poured into the slurry of preparation together, mixing is sufficiently stirred and forms foam slurry, obtains
Foamed cement slurry；
5) foamed cement slurry is poured into curing molding in 100 × 100 × 100mm mold, after then conserving 7 days at room temperature
Demoulding to get.
It is starched using the foamed cement in embodiment 7~15 and foam concrete is prepared according to the preparation method of the present embodiment
During pouring material, mould phenomenon of not collapsing.
Comparative example 1
The foam concrete of this comparative example is poured material and is made using method comprising the following steps:
It 1) is 100:60:0.5:3:0.5's according to the mass ratio of portland cement, water, foaming agent, early strength agent and tackifier
Ratio takes portland cement, water, foaming agent, early strength agent and tackifier；Portland cement, foaming agent, early strength agent and the increasing of use
Stick is the same as embodiment 1；
2) charging basket is added in portland cement, tackifier and part water (95% of water gross mass), is stirred into slurry；
3) foaming agent is put into another charging basket and remaining water is added sufficiently foams and form foam solution；
4) foam solution and early strength agent are poured into the slurry of preparation together, mixing is sufficiently stirred and forms foam slurry, obtains
Foamed cement slurry；
5) foamed cement slurry is poured into curing molding in 100 × 100 × 100mm mold, after then conserving 7 days at room temperature
Demoulding to get.
The foam concrete of this comparative example, detection discovery has collapsing for 1mm after demoulding.
Comparative example 2
The foam concrete of this comparative example is poured material and is made using method comprising the following steps:
1) silicic acid is taken according to the ratio that the mass ratio of portland cement, water, foaming agent and early strength agent is 100:60:0.5:3
Salt cement, water and foaming agent；The portland cement and foaming agent of use, early strength agent are the same as embodiment 1；
2) charging basket is added in portland cement and part water (95% of water gross mass), is stirred into slurry；
3) foaming agent is put into another charging basket and remaining water is added sufficiently foams and form foam solution；
4) foam solution and early strength agent are poured into the slurry of preparation together, mixing is sufficiently stirred and forms foam slurry, obtains
Foamed cement slurry；
5) foamed cement slurry is poured into curing molding in 100 × 100 × 100mm mold, after then conserving 7 days at room temperature
Demoulding to get.
The foam concrete of this comparative example, detection discovery has collapsing for 1.8mm after demoulding.
Comparative example 3
The foam concrete of this comparative example is poured material and is made using method comprising the following steps:
1) portland cement, water are taken according to the ratio that the mass ratio of portland cement, water and foaming agent is 100:60:0.5
And foaming agent；The portland cement and foaming agent of use are the same as embodiment 1；
2) charging basket is added in portland cement and part water (95% of water gross mass), is stirred into slurry；
3) foaming agent is put into another charging basket and remaining water is added sufficiently foams and form foam solution；
4) foam solution is poured into the slurry of preparation, mixing is sufficiently stirred and forms foam slurry, obtain foamed cement slurry；
5) foamed cement slurry is poured into curing molding in 100 × 100 × 100mm mold, after then conserving 7 days at room temperature
Demoulding to get.
The foam concrete of this comparative example, detection discovery has collapsing for 3mm after demoulding.
Comparative example 4
The concreting material of this comparative example is to mix portland cement and water according to the ratio that mass ratio is 100:65
It is even that cement slurry is made, cement slurry is then poured into curing molding in 100 × 100 × 100mm mold, then conserves 7 at room temperature
After it made of demoulding.Do not occur mould phenomenon of collapsing in the concrete material preparation process of this comparative example.
Experimental example
Embodiment 17 foamed cement of embodiment 7~15 (be respectively adopted slurry), obtained in comparative example 1~3 is measured respectively
Foam concrete pours dry density, intensity and the water absorption rate of concreting material made from material and comparative example 4, the results are shown in Table
1。
The performance test results of 1 concrete material of table
By data in 1 it is found that foam concrete of the invention pours material while with good anti-collapse mould performance,
Also there are the performances such as prepared concrete segment intensity is high, water absorption rate is low.
Claims (10)
1. a kind of cement composition, it is characterised in that: the component including following parts by weight: 100 parts of portland cement, foaming agent
0.5~3 part, 0.2~2 part of thixotropic agent, 0.5~2 part of tackifier, 3~5 parts of early strength agent.
2. cement composition according to claim 1, it is characterised in that: it is de- that the thixotropic agent is selected from organobentonite, illiteracy
One of soil, fumed silica, rilanit special, zinc stearate, polyethylene wax or any combination.
3. cement composition according to claim 1, it is characterised in that: the tackifier are selected from hydroxyethyl cellulose, hydroxyl
One of propyl methocel, gelatin or any combination.
4. cement composition according to claim 1, it is characterised in that: the early strength agent is lithiumation object early strength agent.
5. cement composition according to claim 4, it is characterised in that: the lithiumation object early strength agent is selected from lithium carbonate, chlorine
Change one or both of lithium.
6. cement composition according to claim 1, it is characterised in that: the foaming agent is physical blowing agent.
7. cement composition according to claim 6, it is characterised in that: the physical blowing agent is selected from detergent alkylate sulphur
One of acid, ethoxylated alkyl sulfate, α-sodium olefin sulfonate or any combination.
8. a kind of foamed cement slurry, it is characterised in that: including water and cement composition as described in claim 1；Water and described
The mass ratio of portland cement is 60~100:100 in cement composition.
9. a kind of pour material using foamed cement as claimed in claim 8 slurry foam concrete obtained.
10. the preparation method that a kind of foam concrete as claimed in claim 9 pours material, it is characterised in that: including following
Step:
1) slurry and foam solution are prepared:
A portland cement, thixotropic agent, tackifier and water) are mixed into slurry；
B foam solution is made in foaming after) mixing foaming agent and water；
2) early strength agent and slurry obtained, foam solution are uniformly mixed, obtain foamed cement slurry；
3) by foamed cement starch carry out moulding by casting, maintenance to get.
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| CN201910740437.1A CN110436848A (en) | 2019-08-12 | 2019-08-12 | A kind of cement composition, foamed cement slurry, foam concrete pour material and preparation method thereof |
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| CN112321212A (en) * | 2020-11-05 | 2021-02-05 | 四川鼎德商品混凝土有限公司 | Heat-preservation light foamed concrete and preparation method thereof |
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Application publication date: 20191112 |