CN115536328A - Foam concrete with high stability performance and preparation method thereof - Google Patents
Foam concrete with high stability performance and preparation method thereof Download PDFInfo
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- CN115536328A CN115536328A CN202211029196.8A CN202211029196A CN115536328A CN 115536328 A CN115536328 A CN 115536328A CN 202211029196 A CN202211029196 A CN 202211029196A CN 115536328 A CN115536328 A CN 115536328A
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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
- 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
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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
- C04B2201/30—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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a foam concrete with high stability and a preparation method thereof, wherein each cubic meter of the foam concrete comprises the following raw materials by weight: 210-270kg of cement, 0.5-1.6kg of foaming agent, 10-20kg of fly ash, 100-140kg of water and 1-3kg of heat resistant agent, wherein the heat resistant agent consists of hectorite clay, acid silica sol, brucite fiber dispersion liquid and expanded graphite. The invention selects cement, foaming agent, fly ash, water and heat resisting agent in a certain proportion, combines the heat resisting agent consisting of hectorite clay, acid silica sol, brucite fiber dispersion liquid and expanded graphite in a specific proportion, effectively avoids the drying shrinkage phenomenon caused by internal factors, is beneficial to keeping the maximum deformation range of the foam concrete, improves the shock resistance and stability of the foam concrete, reduces the using amount of the cement, the foaming agent and the fly ash, is green and environment-friendly, and has controllable quality.
Description
Technical Field
The invention relates to the field of foam concrete, in particular to foam concrete with high stability and a preparation method thereof.
Background
The foam concrete, also called as bubble concrete, is a light filling concrete material containing a large number of closed air holes, which is formed by uniformly mixing a foaming agent and a cement slurry through a foaming system, performing cast-in-place construction or mold forming through a pumping system, and curing under certain conditions. In recent years, physical properties such as porosity, fluidity, and water absorption of foam concrete have been receiving attention from researchers, particularly energy absorption and cushioning properties. Therefore, the prior art has developed more researches on the static and dynamic mechanical properties and the energy absorption performance of the foam concrete.
Researches show that the brucite fiber can obviously improve the pavement performance of asphalt and asphalt mixtures, and researches show that hectorite can partially replace cellulose ethers, so that the workability and thixotropy of special mortar are improved, the anti-permeability of the mortar can be improved, and the hectorite fiber is an ideal and efficient mineral rheological aid. However, the prior art lacks the use of brucite fibers and hectorite for the preparation of foamed concrete.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a foam concrete with high stability performance and a preparation method thereof.
The technical scheme of the invention is realized as follows:
a high-stability foam concrete comprises the following raw materials in parts by weight per cubic meter: 210-270kg of cement, 0.5-1.6kg of foaming agent, 10-20kg of fly ash, 100-140kg of water and 1-3kg of heat resistant agent, wherein the heat resistant agent consists of water-based hectorite clay, acid silica sol, brucite fiber dispersion liquid and expanded graphite.
The further scheme is that each cubic meter comprises the following raw materials by weight: 240-270kg of cement, 0.8-1.2kg of foaming agent, 10kg of fly ash, 120kg of water and 2kg of heat-resisting agent, wherein the heat-resisting agent is prepared from the following components in percentage by mass of 1-2:1-3:1-3:0.5-1.5 of water-based hectorite clay, acid silica sol, brucite fiber dispersion and expanded graphite.
According to a further scheme, each cubic meter of the feed comprises the following raw materials by weight: 240-270kg of cement, 0.8-1.2kg of foaming agent, 10kg of fly ash, 120kg of water and 2kg of heat resistant agent, wherein the heat resistant agent is prepared from the following components in percentage by mass of 1-2:1-2:2:0.5 of an aqueous hectorite clay, an acidic silica sol, a brucite fiber dispersion and expanded graphite.
Further, the particle size of the hectorite clay particles is 5-10 μm.
The brucite fiber dispersion liquid is obtained by adding a polyurethane solution into preheated brucite fibers, and stirring, ultrasonically dispersing and homogenizing the mixture.
According to a further scheme, the mass ratio of the brucite fibers to the polyurethane solution is 1:5-6; the solid content of the polyurethane solution is 50-60%; preheating the brucite fibers to 110-130 ℃; the stirring time is 1-2h, the ultrasonic dispersion time is 1-5h, the homogenizing pressure is 900-1200bar, and the homogenizing time is 30-50min.
Further, the preparation method of the foam concrete comprises the following preparation steps:
s1, preparing slurry: weighing cement, a foaming agent, fly ash, water and a heat resisting agent according to the raw materials in parts by weight; adding water accounting for 35-40% of the total weight of the formula water into the cement and the fly ash, and stirring to obtain slurry;
s2, preparing a foaming liquid: mixing the rest water with a foaming agent to obtain a foaming liquid;
s3, preparing a mixture: mixing the slurry and the foaming liquid, preheating, adding a heat resistance agent, and stirring to obtain a mixture;
s4, foam concrete: and pouring and maintaining the mixture to obtain the foam concrete.
Compared with the prior art, the invention has the beneficial effects that:
the invention selects cement, foaming agent, fly ash, water and heat resisting agent in a certain proportion, combines the heat resisting agent consisting of hectorite clay, acid silica sol, brucite fiber dispersion liquid and expanded graphite in a specific proportion, effectively avoids the drying shrinkage phenomenon caused by internal factors, is beneficial to keeping the maximum deformation range of the foam concrete, improves the shock resistance and stability of the foam concrete, reduces the using amount of the cement, the foaming agent and the fly ash, is green and environment-friendly, and has controllable quality.
In addition, the hectorite clay with the particle size of 5-10 mu m has platelet-shaped particles, on one hand, the hectorite clay has better swelling property and rheological property, on the other hand, in the brucite fiber dispersion liquid, the hectorite clay also has partial hydration reaction in the cement hydration process, more hydration layers are formed among lamella, ions of the hectorite clay can stimulate the hydration reaction of the cement, the intensity of the hydration reaction can be weakened, and the release of hydration heat can be reduced; however, hectorite clay has poor water retention performance, and the bleeding rate of slurry can be reduced by introducing the acidic silica sol and the expanded graphite, and meanwhile, the acidic silica sol and the expanded graphite can also be used as the filler of slurry to improve the foam stability; the brucite fiber dispersion is introduced, so that when the release of hydration heat is reduced, the dispersibility of the components in the concrete is improved, the aggregation and agglomeration of the brucite fiber, hectorite clay and other components are avoided, the uneven forming of a test piece is avoided, and the stability and the shock resistance are reduced.
The heat-resisting agent consisting of the water-based hectorite clay, the acidic silica sol, the brucite fiber dispersion liquid and the expanded graphite is mutually cooperated and is doped with the cement slurry and the foaming liquid, so that the hydration reaction is slowed down, the maximum temperature rise time of hydration heat is delayed, the hydration heat is uniformly released, and the later strength of the test piece is improved.
Drawings
FIG. 1 is a stress-strain curve of a foam concrete test piece of example 3.
Detailed Description
In order to better understand the technical content of the invention, specific examples are provided below to further illustrate the invention.
The experimental methods used in the examples of the present invention are all conventional methods unless otherwise specified.
The materials, reagents and the like used in the examples of the present invention can be obtained commercially without specific description.
The cement of the invention is P.O 42.5 grade cement, and the fly ash is I grade fly ash.
Measuring the heat of hydration heat according to GB/T12959-2008 'method for measuring cement hydration heat'; the thermal conductivity was measured according to GB/T10294-2008 "method for measuring thermal insulation Material Stable State thermal resistance and related characteristics of guarded Hot plate". And curing the formed test piece at the temperature of 22 +/-2 ℃ and the relative humidity of 90% for 28 days, taking out the test piece to obtain a foam concrete test piece for measuring the performance, and taking the foam concrete without the heat resisting agent as a control group.
In the stress-strain experiment, the compression strength of a foam concrete test piece is tested by adopting an Shimadzu AGX-250 electronic universal tester, the set speed is 0.01mm/S, the compression strength of the test piece is F (MPa) = P/S, wherein P is the damage load (N) borne by the test piece when the test piece is finally damaged, and S is the stress area (mm) of the test piece 2 )。
Example 1
A high-stability foam concrete comprises the following raw materials in parts by weight per cubic meter: 210kg of cement, 0.5kg of foaming agent, 10kg of fly ash, 100kg of water and 1kg of heat resisting agent;
wherein the heat resisting agent is prepared from the following components in percentage by mass of 1:1:1:0.5 hectorite clay with a particle size of 5-10 μm, acidic silica sol, brucite fiber dispersion, and expanded graphite.
The preparation method of the brucite fiber dispersion comprises the following steps: according to the mass ratio of 1: and 5, adding a polyurethane solution with the solid content of 55% into brucite fibers preheated to 120 ℃, stirring for 1 hour, ultrasonically dispersing for 5 hours, and homogenizing for 40min at the homogenizing pressure of 1000bar to obtain the brucite fiber dispersion liquid.
Example 2
A high-stability foam concrete comprises the following raw materials in parts by weight per cubic meter: 270kg of cement, 1.6kg of foaming agent, 20kg of fly ash, 140kg of water and 3kg of heat resisting agent;
wherein the heat resisting agent is prepared from the following components in percentage by mass of 2:3:3:1.5 hectorite clay with a particle size of 5-10 μm, acidic silica sol, brucite fiber dispersion and expanded graphite.
The preparation method of the brucite fiber dispersion comprises the following steps: according to the mass ratio of 1:6, adding a polyurethane solution with the solid content of 55% into brucite fibers preheated to 120 ℃, stirring for 2 hours, ultrasonically dispersing for 2 hours, and homogenizing for 30min at the homogenizing pressure of 1200bar to obtain the brucite fiber dispersion liquid.
Example 3
A high-stability foam concrete comprises the following raw materials in parts by weight per cubic meter: 260kg of cement, 1kg of foaming agent, 10kg of fly ash, 120kg of water and 2kg of heat resisting agent;
wherein the heat resisting agent is prepared from the following components in percentage by mass of 2:2:2:1 of hectorite clay with a particle size of 5-10 μm, acidic silica sol, brucite fiber dispersion and expanded graphite.
The preparation method of the brucite fiber dispersion comprises the following steps: according to the mass ratio of 1:6, adding a polyurethane solution with the solid content of 55% into brucite fibers preheated to 120 ℃, stirring for 2 hours, ultrasonically dispersing for 2 hours, and homogenizing for 40min at the homogenizing pressure of 1000bar to obtain the brucite fiber dispersion liquid.
Example 4
A high-stability foam concrete comprises the following raw materials in parts by weight per cubic meter: 240kg of cement, 0.8kg of foaming agent, 10kg of fly ash, 120kg of water and 2kg of heat resisting agent;
wherein the heat resisting agent is prepared from the following components in percentage by mass of 2:1:2:0.5 hectorite clay with a particle size of 5-10 μm, acidic silica sol, brucite fiber dispersion, and expanded graphite.
The preparation method of the brucite fiber dispersion comprises the following steps: according to the mass ratio of 1:6, adding a polyurethane solution with the solid content of 55% into brucite fibers preheated to 120 ℃, stirring for 2 hours, ultrasonically dispersing for 2 hours, and homogenizing for 40min at the homogenizing pressure of 1000bar to obtain the brucite fiber dispersion liquid.
Comparative example 1
A high-stability foam concrete comprises the following raw materials in parts by weight per cubic meter: 240kg of cement, 0.8kg of foaming agent, 10kg of fly ash, 120kg of water and 2kg of heat resisting agent;
wherein the heat resisting agent is prepared from the following components in percentage by mass of 1:2:0.5 of acidic silica sol, brucite fiber dispersion and expanded graphite.
The preparation method of the brucite fiber dispersion comprises the following steps: according to the mass ratio of 1:6, adding a polyurethane solution with the solid content of 55% into brucite fibers preheated to 120 ℃, stirring for 2 hours, ultrasonically dispersing for 2 hours, and homogenizing for 40min at the homogenizing pressure of 1000bar to obtain the brucite fiber dispersion liquid.
Comparative example 2
A high-stability foam concrete comprises the following raw materials in parts by weight per cubic meter: 240kg of cement, 0.8kg of foaming agent, 10kg of fly ash, 120kg of water and 2kg of heat resisting agent;
wherein the heat resisting agent is prepared from the following components in percentage by mass of 2:1:0.5 particle size of hectorite clay of 5-10 μm, acidic silica sol and expanded graphite.
Comparative example 3
A high-stability foam concrete comprises the following raw materials in parts by weight per cubic meter: 240kg of cement, 0.8kg of foaming agent, 10kg of fly ash, 120kg of water and 2kg of heat resisting agent;
wherein the heat resisting agent is prepared from the following components in percentage by mass of 2:2 particle size of 5-10 μm and brucite fiber dispersion.
The preparation method of the brucite fiber dispersion liquid comprises the following steps: according to the mass ratio of 1:6, adding a polyurethane solution with the solid content of 55% into brucite fibers preheated to 120 ℃, stirring for 2 hours, performing ultrasonic dispersion for 2 hours, and homogenizing for 40min at the homogenizing pressure of 1000bar to obtain the brucite fiber dispersion liquid.
The preparation methods of the foam concrete test pieces of the above examples 1 to 4 and comparative examples 1 to 3 include the following preparation steps:
s1, preparing slurry: weighing cement, a foaming agent, fly ash, water and a heat resisting agent according to the raw materials in parts by weight; adding water accounting for 35-40% of the total weight of the formula water into the cement and the fly ash, and stirring to obtain slurry;
s2, preparing a foaming liquid: mixing the rest water with a foaming agent to obtain a foaming liquid;
s3, preparing a mixture: mixing the slurry and the foaming liquid, preheating, adding a heat resistance agent, and stirring to obtain a mixture;
s4 test piece: and pouring the mixture into a mold for molding, wherein the size of a test piece is 100mm multiplied by 100mm, and obtaining a test piece.
The test results of the above test pieces are shown in table 1 below.
TABLE 1 hydration heat quantity of test piece at different time
As can be seen from the above table, the heat of hydration for the test pieces in examples 1 to 4 was 18.6 to 22.7 J.g at 18 hours -1 Then the temperature rises to 42.3 to 45.2 J.g within 36h -1 The heat quantity of hydration heat of cement is increased rapidly within 0-20h from the beginning of hydration, the heat quantity of hydration heat is lower at 18h, and the heat quantity of hydration heat is increased slowly within 36h, which shows that the heat resisting agent consisting of the water-based hectorite clay, the acid silica sol, the brucite fiber dispersion liquid and the expanded graphite in a specific ratio is mutually cooperated and is mixed with the cement slurry and the foaming liquid, so that the hydration reaction is slowed down, the maximum temperature rise time of the heat quantity of hydration heat is delayed, the heat release of hydration heat is uniform, and the later strength of a test piece is improved.
The experimental results of the foam concrete test pieces obtained by maintaining the test pieces are shown in the following table 2.
TABLE 2 thermal conductivity and shrinkage of foam concrete test piece 28d
| Item | Thermal conductivity/W (m g) -1 ) | Shrinkage ratio/% |
| Example 3 | 0.082 | 0.32 |
| Example 4 | 0.087 | 0.36 |
| Control group | 0.077 | 0.51 |
From the above table, it can be seen that, compared with the control group, the thermal conductivity of examples 3-4 of the present invention is respectively improved by 6.5% and 13%, and the shrinkage rate is respectively reduced by 37% and 29%, which indicates that the thermal inhibitor comprising the aqueous hectorite clay, the acidic silica sol, the brucite fiber dispersion and the expanded graphite can reduce the shrinkage deformation rate of the foam concrete, thereby being helpful for improving the stability of the foam concrete and effectively avoiding the dry shrinkage phenomenon caused by internal factors.
As can be seen from fig. 1, in example 3, when the strain reaches the peak value, a relatively gentle descending curve is obtained, which indicates that the strain range also has relatively large residual stress, which is helpful for maintaining the maximum deformation range of the foam concrete and effectively improving the shock resistance and stability of the foam concrete.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The foam concrete with high stability performance is characterized by comprising the following raw materials by weight per cubic meter: 210-270kg of cement, 0.5-1.6kg of foaming agent, 10-20kg of fly ash, 100-140kg of water and 1-3kg of heat resistant agent, wherein the heat resistant agent consists of hectorite clay, acid silica sol, brucite fiber dispersion liquid and expanded graphite.
2. The foam concrete with high stability performance as claimed in claim 1, wherein each cubic meter of the foam concrete comprises the following raw materials by weight: 240-270kg of cement, 0.8-1.2kg of foaming agent, 10kg of fly ash, 120kg of water and 2kg of heat-resisting agent, wherein the heat-resisting agent is prepared from the following components in percentage by mass of 1-2:1-3:1-3:0.5-1.5 of hectorite clay, acid silica sol, brucite fiber dispersion and expanded graphite.
3. The foam concrete with high stability performance as claimed in claim 2, characterized by comprising the following raw materials per cubic meter: 240-270kg of cement, 0.8-1.2kg of foaming agent, 10kg of fly ash, 120kg of water and 2kg of heat resistant agent, wherein the heat resistant agent is prepared from the following components in percentage by mass of 1-2:1-2:2:0.5 hectorite clay, acidic silica sol, brucite fiber dispersion and expanded graphite.
4. The foam concrete with high stability performance as claimed in claim 3, wherein each cubic meter of the foam concrete comprises the following raw materials by weight: 260kg of cement, 1kg of foaming agent, 10kg of fly ash, 120kg of water and 2kg of heat resisting agent; the heat resisting agent is prepared from the following components in percentage by mass of 2:2:2:1 hectorite clay, acidic silica sol, brucite fiber dispersion and expanded graphite.
5. The foamed concrete of claim 1, wherein the hectorite clay particles have a particle size of 5-10 μm.
6. The foam concrete of claim 1, wherein the brucite fiber dispersion is prepared by adding a polyurethane solution to preheated brucite fibers, stirring, ultrasonically dispersing, and homogenizing.
7. The foam concrete with high stability and performance as claimed in claim 6, wherein the mass ratio of the brucite fibers to the polyurethane solution is 1:5-6; the solid content of the polyurethane solution is 50-60%; preheating the brucite fibers to 110-130 ℃; the stirring time is 1-2h, the ultrasonic dispersion time is 1-5h, the homogenizing pressure is 900-1200bar, and the homogenizing time is 30-50min.
8. The method for producing a foamed concrete according to any one of claims 1 to 7, characterized by comprising the production steps of:
s1, preparing slurry: weighing cement, a foaming agent, fly ash, water and a heat-resisting agent according to the weight parts of the raw materials; adding water accounting for 35-40% of the total weight of the formula water into the cement and the fly ash, and stirring to obtain slurry;
s2, preparing a foaming liquid: mixing the rest water with a foaming agent to obtain a foaming liquid;
s3, preparing a mixture: mixing the slurry and the foaming liquid, preheating, adding a heat resistance agent, and stirring to obtain a mixture;
s4, foam concrete: and pouring and maintaining the mixture to obtain the foam concrete.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811884A (en) * | 2010-04-02 | 2010-08-25 | 建研建材有限公司 | High-performance foam concrete and preparation method thereof |
| CN107009484A (en) * | 2017-04-25 | 2017-08-04 | 天津和兴源建筑工程有限公司 | A kind of preparation method of high performance concrete Self-heat-insulation composite building block |
| CN108793887A (en) * | 2018-07-26 | 2018-11-13 | 上海石化安东混凝土有限公司 | A kind of mass concrete and preparation method thereof |
| CN110041025A (en) * | 2019-04-04 | 2019-07-23 | 广西建工集团冶金建设有限公司 | A kind of ameliorative mass concrete and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101811884A (en) * | 2010-04-02 | 2010-08-25 | 建研建材有限公司 | High-performance foam concrete and preparation method thereof |
| CN107009484A (en) * | 2017-04-25 | 2017-08-04 | 天津和兴源建筑工程有限公司 | A kind of preparation method of high performance concrete Self-heat-insulation composite building block |
| CN108793887A (en) * | 2018-07-26 | 2018-11-13 | 上海石化安东混凝土有限公司 | A kind of mass concrete and preparation method thereof |
| CN110041025A (en) * | 2019-04-04 | 2019-07-23 | 广西建工集团冶金建设有限公司 | A kind of ameliorative mass concrete and preparation method thereof |
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