CN113264725A - Foam concrete and preparation method and application thereof - Google Patents
Foam concrete and preparation method and application thereof Download PDFInfo
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- CN113264725A CN113264725A CN202110460117.8A CN202110460117A CN113264725A CN 113264725 A CN113264725 A CN 113264725A CN 202110460117 A CN202110460117 A CN 202110460117A CN 113264725 A CN113264725 A CN 113264725A
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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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- 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
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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
- C04B2201/30—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
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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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses foam concrete and a preparation method and application thereof. The foam concrete comprises the following components: cementitious materials and foams; wherein the cementing material comprises cement, hollow glass beads and water; the foam is prepared by foaming a foaming agent composition; the blowing agent composition includes surface hydrophilically modified nanoparticles, a surfactant, a conditioning agent, and water. According to the invention, the foaming agent composition for pretreating the nano particles is adopted for foaming, the obtained foam has stable performance and low cost, and the foam can improve the performance of the foam concrete and effectively increase the compressive strength of the foam concrete by using the foam and utilizing the hollow glass microspheres, so that the market application prospect is wide.
Description
Technical Field
The invention relates to the technical field of concrete, in particular to foam concrete and a preparation method and application thereof.
Background
The foam concrete is also called as bubble concrete, and is a novel light heat-insulating material containing a large number of closed air holes, which is formed by fully foaming a foaming agent through a foaming system of a foaming machine, uniformly mixing the foam with cement slurry, and then performing cast-in-place construction or mold forming and natural curing.
The problems of large dosage and instability of the foaming agent applied to the foam concrete at present generally exist. Typical blowing agents tend to agglomerate during manufacture, resulting in increased size and therefore unstable foams. And the foaming agent with good performance is mostly an imported product, so that the cost of the foam concrete is increased, and the large-scale production and application are not facilitated.
In addition, the prior foam concrete influences the popularization and application of the foam concrete in a plurality of fields due to the compressive strength. If the compressive strength of the foam concrete can be further improved, the mechanical property is improved, and the foam concrete can meet the application requirements of more fields.
Therefore, how to provide a foam concrete with low cost, environmental protection and excellent performance becomes a technical problem which needs to be solved urgently by researchers in the industry.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems in the prior art. Accordingly, it is an object of the present invention to provide a foamed concrete; the second object of the present invention is to provide a method for producing such a foamed concrete; the invention also aims to provide application of the foam concrete.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides in a first aspect a foamed concrete comprising the following components: cementitious materials and foams;
the cementing material comprises cement, hollow glass beads and water;
the foam is prepared by foaming a foaming agent composition;
the blowing agent composition includes surface hydrophilically modified nanoparticles, a surfactant, a conditioning agent, and water.
According to some embodiments of the foamed concrete of the present invention, the ratio of cementitious material to foam is 1 g: (0.4-0.6) mL.
According to some embodiments of the foamed concrete of the present invention, the ratio of the cementitious material to the foam is 1 g: (0.45-0.55) mL.
According to some embodiments of the foamed concrete of the present invention, the blowing agent composition comprises 0.04% to 0.07% by mass of surface hydrophilically modified nanoparticles.
According to some embodiments of the foamed concrete of the present invention, the blowing agent composition comprises 0.04% to 0.06% by mass of surface hydrophilically modified nanoparticles.
According to some embodiments of the foamed concrete of the present invention, the surfactant is present in the blowing agent composition in an amount of 0.06% to 0.1% by mass.
According to some embodiments of the foamed concrete of the present invention, the surfactant is present in the blowing agent composition in an amount of 0.07% to 0.09% by mass.
According to some embodiments of the foamed concrete of the present invention, the foaming agent composition comprises 0.15% to 0.3% by mass of a conditioning agent.
According to some embodiments of the foamed concrete of the present invention, the foaming agent composition comprises 0.18 to 0.28% by weight of a conditioning agent.
According to some embodiments of the foamed concrete of the present invention, in the surface-hydrophilically-modified nanoparticles, the nanoparticles include at least one of nano-silica, nano-titania, nano-alumina, nano-zinc oxide, nano-zirconia, nano-ceria, nano-iron oxide, nano-attapulgite, nano-kaolin, nano-montmorillonite, and nano-bentonite.
According to some embodiments of the foamed concrete of the present invention, the surface-hydrophilically-modified nanoparticles include at least one of nano-attapulgite, nano-kaolin, nano-montmorillonite, and nano-bentonite. These types of nanoparticles are selected and used, and have wide sources and low cost. The nano particles subjected to surface hydrophilic modification can stabilize foam, and ensure that the produced concrete has pores with small pore diameter and uniform dispersion, thereby improving the performance of the foam concrete.
In the present invention, the method for hydrophilic modification of the surface of the nanoparticles is a conventional method in the art, such as soaking or coating the nanoparticles with a surfactant. The surfactant used for hydrophilic modification may be selected from silane coupling agents and/or polyethers.
According to some embodiments of the foamed concrete of the present invention, the surfactant comprises at least one of a sulfate-based surfactant, a sulfonate-based surfactant, and fatty alcohol-polyoxyethylene ether. The selected surfactants have the advantages of high foaming efficiency and good effect.
According to some embodiments of the foamed concrete of the present invention, the surfactant comprises at least one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, AEO-7, and AEO-9.
According to some embodiments of the foamed concrete of the present invention, the conditioner comprises a polymeric material, a foam stabilizer, and a reinforcing agent.
According to some embodiments of the foamed concrete of the present invention, the polymeric material comprises at least one of polyacrylamide, polyethyleneimine, polyvinyl alcohol, polyvinyl pyrrolidone. The polyacrylamide can react with the cement in an active way, and the chemical combination of the polyacrylamide and the cement interface improves the bearing capacity of the interface, thereby improving the toughness and the fracture resistance of the interface, forming good physical and mechanical properties and being beneficial to the formation of a micro and closed type foam hole body; n atoms on a polyethyleneimine molecular chain are grafted with a certain amount of corresponding hydrophobic chains, and partial amino groups on the molecular chain are shielded, so that polyethyleneimine can be internally hydrophilic and externally hydrophobic, the compatibility of foam and cement slurry can be enhanced, and the mechanical property of foam concrete is enhanced; polyvinylpyrrolidone, as a water-soluble high-molecular compound, has good solubilization and coacervation properties and is beneficial to stabilizing foam.
According to some embodiments of the foamed concrete of the present invention, the polymeric material comprises at least one of polyacrylamide, polyethyleneimine, polyvinylpyrrolidone.
According to some embodiments of the foamed concrete of the present invention, the foaming agent composition comprises 0.05% to 0.1% by mass of a polymer material.
According to some embodiments of the foamed concrete of the present invention, the foaming agent composition comprises 0.06 to 0.08% by mass of a polymeric material.
According to some embodiments of the foamed concrete of the present invention, the foam stabilizer comprises at least one of methylcellulose, hydroxypropylmethylcellulose, hydroxyethylcellulose. The cellulose is selected as the foam stabilizer, and the viscosity of the aqueous solution of the cellulose is high, so that the foaming agent solution can keep enough viscosity, and the stability of the foam is improved.
According to some embodiments of the foamed concrete of the present invention, the foam stabilizer comprises at least one of methylcellulose, hydroxypropyl methylcellulose.
According to some embodiments of the foamed concrete of the present invention, the foam stabilizer is 0.1 to 0.3% by mass of the foaming agent composition.
According to some embodiments of the foamed concrete of the present invention, the foam stabilizer is 0.15 to 0.2% by mass of the foaming agent composition.
According to some embodiments of the foamed concrete of the present invention, the reinforcing agent comprises at least one of triethanolamine, sodium chloride, magnesium chloride, sodium silicate, calcium nitrate. The reinforcing agents can increase the stability of foam, further improve the compactness of the internal structure of foam concrete and improve the mechanical property.
According to some embodiments of the foamed concrete of the present invention, the reinforcing agent comprises at least one of triethanolamine, sodium chloride, magnesium chloride.
According to some embodiments of the foamed concrete of the present invention, the reinforcing agent is present in the foaming agent composition in an amount of 0.005% to 0.01% by mass.
According to some embodiments of the foamed concrete of the present invention, the reinforcing agent is present in the foaming agent composition in an amount of 0.006% to 0.009% by mass.
According to some embodiments of the foamed concrete of the present invention, the conditioner may further comprise a water reducing agent.
According to some embodiments of the foamed concrete of the present invention, the water reducing agent comprises at least one of a lignosulfonate-based water reducing agent, a naphthalene-based water reducing agent, a melamine-based water reducing agent, a sulfamate-based water reducing agent, a fatty acid-based water reducing agent, and a polycarboxylic acid-based water reducing agent. The amount of the water reducing agent can be adjusted according to actual needs, which belongs to the conventional technology in the field.
According to some embodiments of the foamed concrete of the present invention, the mass of the hollow glass beads in the cementitious material is 3% to 20% of the total mass of the cement and the hollow glass beads.
According to some embodiments of the foamed concrete of the present invention, the mass of the hollow glass beads in the cementitious material is 5% to 15% of the total mass of the cement and the hollow glass beads.
According to some embodiments of the foamed concrete of the present invention, the hollow glass beads have a particle size of 10 to 1000 microns.
According to some embodiments of the foamed concrete of the present invention, the cement in the cementitious material comprises at least one of portland cement, portland cement, portland slag cement, pozzolanic portland cement, portland fly ash cement, and composite portland cement.
According to some embodiments of the foamed concrete of the present invention, the strength of the cement in the cementitious material comprises at least one of 32.5, 42.5, 52.5 grades.
According to some embodiments of the foamed concrete of the present invention, the cement in the cementitious material has a density of 2.4g/cm3～2.7g/cm3。
According to some embodiments of the foamed concrete according to the present invention, the cement in the cementitious material has a density of 2.5g/cm3～2.6g/cm3。
According to some embodiments of the foamed concrete of the present disclosure, the foamed concrete has a wet density of 800kg/m3～1000kg/m3。
According to some embodiments of the foamed concrete of the present invention, the foamed concreteThe dry density of the soil is 500kg/m3～750kg/m3。
According to some embodiments of the foamed concrete of the present invention, the foamed concrete has a thermal conductivity of 0.05W/mK to 0.11W/mK.
A second aspect of the present invention provides a method of producing a foamed concrete according to the first aspect of the present invention, comprising the steps of:
mixing cement, hollow glass beads and water to obtain a cementing material;
mixing the surface hydrophilic modified nano particles, a surfactant, a regulator and water to obtain a foaming agent composition;
and foaming the foaming agent composition to prepare foam, and mixing the foam with the cementing material to obtain the foam concrete.
According to some embodiments of the method of producing foamed concrete of the present invention, in the step of preparing the foaming agent composition, the mass ratio of the sum of the mass of the surface hydrophilically-modified nanoparticles, the surfactant and the regulator to water is 1: (200-500).
According to some embodiments of the method of producing foamed concrete of the present invention, in the step of preparing the foaming agent composition, the mass ratio of the sum of the mass of the surface hydrophilically-modified nanoparticles, the surfactant and the regulator to water is 1: (300-400).
According to some embodiments of the method of producing foamed concrete according to the present invention, the foam is mixed with the cementitious material under agitation.
A third aspect of the invention provides the use of the foamed concrete according to the first aspect of the invention in the field of construction, in the field of 3D printing, in the field of landfill, in the field of explosion protection or in the field of ground barrier systems.
The invention has the beneficial effects that:
according to the invention, the foaming agent composition for pretreating the nano particles is adopted for foaming, the obtained foam has stable performance and low cost, and the foam can improve the performance of the foam concrete and effectively increase the compressive strength of the foam concrete by using the foam and utilizing the hollow glass microspheres, so that the market application prospect is wide.
Further, compared with the prior art, the invention has the following advantages:
1) the foam concrete adopts foam which is prepared from a foaming agent prepared by pretreating nano particles, and the foam is subjected to surface treatment based on the foam stabilizing principle of the nano particles, so that the nano particles can be gathered on the surface of the foam in a single layer, and the using amount of the nano particles is greatly reduced. After the foam enters the alkaline environment of the cement mixture, the nano particles can be quickly cemented together to form a protective film, so that the bubbles are prevented from being broken, the prepared foam is more stable, and the performance of the foam concrete can be improved.
2) The content of the nano particles in the foaming agent composition is low, so that the cost can be reduced, and the large-scale popularization and application are facilitated.
3) The preparation process of the foam concrete only needs simple blending, is simple and convenient to operate, does not generate pollutants, and is very environment-friendly.
Drawings
FIG. 1 is a scanning electron micrograph of a foamed concrete according to example 1 of the present invention;
FIG. 2 is a scanning electron micrograph of foam concrete according to example 2 of the present invention;
FIG. 3 is a scanning electron micrograph of a foamed concrete according to example 3 of the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific examples. The starting materials, reagents or apparatus used in the examples and comparative examples were obtained from conventional commercial sources or can be obtained by a method of the prior art, unless otherwise specified.
Unless otherwise stated, the tests or test methods are conventional in the art, for example, see JG/T266-.
Example 1
The foam concrete of the embodiment comprises the following raw materials in parts by weight: 270g of cement, 30g of hollow glass beads, 160mL of water and 230mL of foam.
The cement of this example had a density of 2.59g/cm352.5 grade portland cement.
The foaming agent composition of the embodiment comprises the following raw materials in percentage by mass: 0.06 percent of silane coupling agent surface hydrophilic modified nano attapulgite powder, 0.08 percent of sodium dodecyl benzene sulfonate, 0.016 percent of polyacrylamide, 0.016 percent of polyethyleneimine, 0.04 percent of polyvinylpyrrolidone, 0.18 percent of methylcellulose, 0.008 percent of triethanolamine and the balance of water.
The preparation method of the foam concrete comprises the following steps:
mixing 285g of cement, 15g of hollow glass beads and 130mL of water to obtain a mixture;
mixing surface hydrophilic modified nano attapulgite powder, sodium dodecyl benzene sulfonate, polyacrylamide, polyethyleneimine, polyvinylpyrrolidone, methyl cellulose and triethanolamine, and mixing with water according to the mass ratio of 1:300 to obtain a foaming agent composition;
the foaming agent composition is stirred and foamed to generate foam, and then the mixture and 230mL of foam are mixed under stirring to obtain the foam concrete.
Example 2
The foamed concrete of this example differs from example 1 only in that it comprises the following amounts of raw materials: 285g of cement, 15g of hollow glass beads, 130mL of water and 230mL of foam, the rest being the same as in example 1.
Example 3
The foamed concrete of this example differs from example 1 only in that it comprises the following amounts of raw materials: 255g of cement, 45g of hollow glass beads, 190mL of water and 230mL of foam, the rest being the same as in example 1.
Example 4
The foamed concrete of this example was different from example 1 only in the composition of the foaming agent composition, and was the same as example 1.
The foaming agent composition of the embodiment comprises the following raw materials in percentage by mass: 0.06% of silane coupling agent surface hydrophilic modified nano kaolin powder, 0.08% of sodium dodecyl sulfate, 0.016% of polyacrylamide, 0.016% of polyethyleneimine, 0.04% of polyvinylpyrrolidone, 0.18% of methylcellulose, 0.008% of triethanolamine and the balance of water.
Example 5
The foamed concrete of this example was different from example 1 only in the composition of the foaming agent composition, and was the same as example 1.
The foaming agent composition of the embodiment comprises the following raw materials in percentage by mass: 0.06% of silane coupling agent surface hydrophilic modified nano bentonite powder, 0.08% of AEO-9, 0.016% of polyacrylamide, 0.016% of polyethyleneimine, 0.04% of polyvinylpyrrolidone, 0.18% of methylcellulose, 0.008% of triethanolamine and the balance of water.
Comparative example 1
The foamed concrete of this example differs from example 1 only in that it comprises the following amounts of raw materials: 270g of cement, 160mL of water and 230mL of foam, the rest being the same as in example 1.
Comparative example 2
The foamed concrete of this example differs from example 1 only in that a commercially available HTW-1 type composite foaming agent (mainly animal and plant protein foaming agents) was used as the foaming agent in this example.
Comparative example 3
The foam concrete of this example is different from example 1 in that the foam concrete of this example includes the following raw materials in amounts: 270g cement, 160mL water and 230mL foam; the foam of this example was prepared by foaming using a commercially available HTW-1 type composite blowing agent.
The foam concrete prepared in the examples 1 to 5 and the comparative examples 1 to 3 is subjected to performance test, and is made into a standard test block with the specification of 40mm × 40mm × 40mm for testing performance, and the test results can be shown in table 1.
TABLE 1 test results of examples 1-5 and comparative example 1
From the above test results, it can be seen that the wet density of the foam concrete provided by the embodiment of the invention is 850kg/m3～950kg/m3Dry density of 550kg/m3～721kg/m3And has the advantage of low density. The compression strength of the nano foam prepared by foaming the foaming agent composition of the embodiment of the invention, the foam concrete prepared by mixing the nano foam with cement, hollow glass beads and the like is obviously improved compared with that of comparative example 1 without adding the hollow glass beads, and simultaneously, the nano foam is higher than that of a sample prepared by using a commercial foaming agent.
Scanning electron micrographs of the foamed concrete of example 1, example 2 and example 3 are shown in FIGS. 1, 2 and 3, respectively. As can be seen from FIGS. 1 to 3, the foam concrete of examples 1 to 3 had a uniform pore distribution.
In the foaming agent composition of the embodiment of the invention, the content of the nano particles is only 0.06%, the selling price is only 16 yuan/cubic meter, which is far lower than that of an imported product, so that the cost can be greatly reduced, and the foaming agent composition has considerable market competitiveness. In addition, the process of preparing the foam concrete only needs simple blending, the operation is simple and convenient, no pollutant is generated, and the method is very environment-friendly and is worthy of popularization and application.
In addition, the foam concrete prepared in the examples 1 to 5 has the thermal conductivity coefficient of 0.056W/mK to 0.103W/mK, has good heat insulation performance and is a heat insulation material with excellent performance.
The foam concrete provided by the invention has good performance, is a light heat-insulating material with higher compressive strength, can be applied to the fields of buildings, 3D printing, landfill, explosion prevention or ground blocking systems, and has wide market prospect.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. A foam concrete, characterized in that: comprises the following components: cementitious materials and foams;
the cementing material comprises cement, hollow glass beads and water;
the foam is prepared by foaming a foaming agent composition;
the blowing agent composition includes surface hydrophilically modified nanoparticles, a surfactant, a conditioning agent, and water.
2. A foamed concrete according to claim 1, wherein: the ratio of the cementitious material to the foam is 1 g: (0.4-0.6) mL.
3. A foamed concrete according to claim 1, wherein: in the foaming agent composition, the mass percentage of the surface hydrophilic modified nano particles is 0.04-0.07%.
4. A foamed concrete according to claim 1, wherein: in the foaming agent composition, the mass percent of the surfactant is 0.06% -0.1%; the mass percentage of the regulator is 0.15-0.3%.
5. A foamed concrete according to claim 1 or 3, characterized in that: in the surface hydrophilic modified nano-particles, the nano-particles comprise at least one of nano-silicon dioxide, nano-titanium dioxide, nano-aluminum oxide, nano-zinc oxide, nano-zirconium oxide, nano-cerium oxide, nano-iron oxide, nano-attapulgite, nano-kaolin, nano-montmorillonite and nano-bentonite.
6. A foamed concrete according to claim 1 or 4, characterized in that: the surfactant comprises at least one of sulfate surfactant, sulfonate surfactant and fatty alcohol-polyoxyethylene ether.
7. A foamed concrete according to claim 1 or 4, characterized in that: the regulator comprises a high polymer material, a foam stabilizer and a reinforcing agent; wherein the high polymer material comprises at least one of polyacrylamide, polyethyleneimine, polyvinyl alcohol and polyvinylpyrrolidone; the foam stabilizer comprises at least one of methyl cellulose, hydroxypropyl methyl cellulose and hydroxyethyl cellulose; the reinforcing agent comprises at least one of triethanolamine, sodium chloride, magnesium chloride, sodium silicate and calcium nitrate.
8. A foamed concrete according to claim 1, wherein: in the cementing material, the mass of the hollow glass beads is 3-20% of the total mass of the cement and the hollow glass beads.
9. A method of producing a foamed concrete according to any one of claims 1 to 8, characterized in that: the method comprises the following steps:
mixing cement, hollow glass beads and water to obtain a cementing material;
mixing the surface hydrophilic modified nano particles, a surfactant, a regulator and water to obtain a foaming agent composition;
and foaming the foaming agent composition to prepare foam, and mixing the foam with the cementing material to obtain the foam concrete.
10. Use of the foamed concrete according to any one of claims 1 to 8 in the field of construction, in the field of 3D printing, in the field of landfill, in the field of explosion protection or in the field of ground-blocking systems.
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Cited By (4)
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| CN114368947A (en) * | 2022-01-11 | 2022-04-19 | 澳门大学 | Nano foam glass bead concrete for door plate and preparation method thereof |
| CN114853416A (en) * | 2022-04-28 | 2022-08-05 | 澳门大学 | Cast-in-situ nano foam concrete and preparation method and application thereof |
| CN115108769A (en) * | 2022-07-29 | 2022-09-27 | 烟台大学 | High-performance mixed alkali-shock foam concrete and preparation method thereof |
| CN115321917A (en) * | 2022-08-26 | 2022-11-11 | 武汉理工大学 | Photocatalytic foam concrete and preparation method thereof |
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