CN116768580A - Aerated concrete repairing agent produced based on low-carbon gel material and preparation method thereof - Google Patents
Aerated concrete repairing agent produced based on low-carbon gel material and preparation method thereof Download PDFInfo
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- 239000004567 concrete Substances 0.000 title claims abstract description 80
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 57
- 239000000463 material Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 53
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000002699 waste material Substances 0.000 claims abstract description 27
- 239000004576 sand Substances 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 17
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 16
- 239000010440 gypsum Substances 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000003860 storage Methods 0.000 claims abstract description 4
- 238000005303 weighing Methods 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 15
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 11
- 239000011707 mineral Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 229920002522 Wood fibre Polymers 0.000 claims description 7
- 239000002025 wood fiber Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 6
- 229910052925 anhydrite Inorganic materials 0.000 claims description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 4
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 4
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical group COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 3
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 229920003086 cellulose ether Polymers 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000010459 dolomite Substances 0.000 claims description 3
- 229910000514 dolomite Inorganic materials 0.000 claims description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 3
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 3
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 3
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 3
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 3
- 229920000609 methyl cellulose Polymers 0.000 claims description 3
- 239000001923 methylcellulose Substances 0.000 claims description 3
- 235000010981 methylcellulose Nutrition 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 229910004298 SiO 2 Inorganic materials 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 11
- 239000004566 building material Substances 0.000 abstract description 2
- 230000000704 physical effect Effects 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 238000007873 sieving Methods 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 229910001653 ettringite Inorganic materials 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000003469 silicate cement Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an aerated concrete repairing agent based on low-carbon gel material production and a preparation method thereof, belongs to the technical field of building materials, and solves the problems of higher production cost, poor construction performance, low bonding strength with autoclaved aerated concrete slabs and poor attractiveness in the prior art. The aerated concrete repairing agent comprises the following raw materials in parts by weight: 20-30 parts of aerated concrete waste, 5-10 parts of low-carbon gel material, 5-10 parts of gypsum, 50-70 parts of sand, 0.2-0.7 part of water-retaining agent, 0.01-0.02 part of water reducer and 0.01-0.5 part of fiber. The preparation method of the invention comprises the steps of weighing the raw materials according to a proportion, discharging the raw materials from a storage tank, uniformly mixing, and adding water and stirring when in use. The aerated concrete repairing agent disclosed by the invention has the advantages of high strength, good compatibility with aerated concrete, low production cost, easiness in construction and high bonding strength with autoclaved aerated concrete slabs.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to an aerated concrete repairing agent produced based on a low-carbon gel material and a preparation method thereof.
Background
The aerated concrete is made from cement, lime, sand (fly ash, stone powder, etc.), aluminum paste, additives, etc. as raw materials through the procedures of ball milling, metering, stirring and pouring, gas expansion, static stopping, cutting, autoclaved curing, etc. With the wide application of autoclaved aerated concrete, the usage amount of the autoclaved aerated concrete increases year by year. In the production and transportation process of aerated concrete, the total amount of unqualified products is increasingly increased due to blank cutting, product handling damage and the like; in the transportation and construction processes, the defects of edge and corner missing, scratch, surface missing and the like are very easy to occur, and the qualification rate and the utilization rate of products are seriously affected. In addition, the damaged parts of the produced connecting piece, embedded piece hole and other materials need to be filled in the construction process.
In the prior art, common silicate repair mortar is generally adopted as an aerated concrete repair agent, and the aerated concrete repair agent has the advantages of high strength, good compatibility and the like, but has the problems of higher production cost, poor construction property, low bonding strength with autoclaved aerated concrete slabs, poor aesthetic property and the like, and has great trouble to the use of the aerated concrete and also causes pollution to the environment.
Therefore, the repairing agent for the aerated concrete is high in strength, good in compatibility, low in production cost, easy to construct and high in bonding strength with autoclaved aerated concrete slabs, and the repairing agent is a technical problem to be solved by the person skilled in the art.
Disclosure of Invention
The invention aims to provide an aerated concrete repairing agent based on low-carbon gel material production, which solves the problems of high production cost, poor construction performance, low bonding strength with autoclaved aerated concrete slabs and poor attractiveness of the aerated concrete repairing agent in the prior art.
The second object of the invention is to provide a preparation method of the aerated concrete repairing agent based on the low-carbon gel material.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the invention provides an aerated concrete repairing agent based on low-carbon gel material production, which comprises the following raw materials in parts by weight:
aerated concrete waste: 20 to 30 parts of the components in parts by weight,
low carbon gel material: 5 to 10 parts of the components in parts by weight,
gypsum: 5 to 10 parts of the components in parts by weight,
sand: 50 to 70 parts of the components in parts by weight,
and (3) a water-retaining agent: 0.2 to 0.7 part of the total weight of the composition,
water reducing agent: 0.01 to 0.02 part of a compound,
and (3) fibers: 0.01 to 0.5 part.
In some embodiments of the invention, the low carbon gelling material mineral composition is from 30 to 45wt.% f-CaO,4～8wt.％、C 2 S 40～50wt.％、CaSO 4 5～9wt.％、C 4 AF 2-5 wt%, specific surface area 300-400 m 2 /kg。
The low-carbon gel material comprises free calcium oxide (f-CaO) and C 2 S, a small amount of anhydrous calcium sulfoaluminate, wherein the content of free calcium oxide is higher. In the prior art, free calcium oxide is regarded as a harmful component in all cement varieties, and the f-CaO content is reduced as much as possible in the selection of raw materials and the preparation process of products. The invention creatively adopts the high-content f-CaO by utilizing the characteristic that the f-CaO reacts with water to generate calcium hydroxide and release a large amount of heat, so that when the aerated concrete repairing agent is prepared, the f-CaO can release a large amount of heat in the reaction process, thereby being beneficial to improving the temperature in repairing slurry and accelerating the hydration reaction of early-strength minerals in low-carbon gelling materials; the calcium hydroxide and hydration product aluminum gel, iron gel and the like are simultaneously generated and contain SO 4 2- The needle-shaped ettringite is more easily formed by reaction in the solution under the proper temperature and alkaline condition and is embedded into the aerated concrete product, so that the rapid setting and hardening of the repairing agent are promoted, and the repairing area has certain strength and adhesiveness.
The invention also contains a small amount of early strength mineral calcium sulfoaluminateWhich can promote the air-entrained concrete repairing agentFaster setting and hardening, meets the hardening requirement of products and is superior to setting and hardening of ordinary Portland cement.
The invention also contains dicalcium silicate, which is favorable for the stable increase of the later strength of the aerated concrete repairing agent; in the invention, a proper amount of calcined CaSO 4 The thickening process of the aerated concrete repairing agent can be regulated, and the quality of the product can be regulated.
In some embodiments of the invention, the aerated concrete waste is a mixed dry powder of green body cutting, product damage or disqualified shape in the process of producing the aerated concrete by taking a low-carbon gel material as a raw material. SiO in its mineral component 2 ：50～75wt％、Ca(OH) 2 :0～25wt％
The aerated concrete repairing agent is prepared from low-carbon gel materials, sand, aerated concrete waste, water-retaining agents, water reducers, fibers and the like. The low-carbon cementing material is prepared by replacing common silicate cement, lime and gypsum raw materials for production at present with raw materials which are integrated into a whole. The waste material formed by the low-carbon gel material for producing aerated concrete contains a large amount of calcium hydroxide, ettringite, calcium carbonate, a small amount of aluminum gel and iron gel, and ettringite is generated in sufficient gypsum and saturated calcium hydroxide solution, so that the mixed slurry has the advantages of quick setting time, high strength and white apparent color in the hardening process.
The invention combines the characteristics of the novel low-carbon gel material, and adds a proper amount of gypsum, water-retaining agent, water reducer, fine sand and the like into the waste material to prepare the aerated concrete repairing agent.
In some embodiments of the present invention, the fine sand comprises at least one of natural quartz sand, dolomite sand, natural river sand, and SiO in chemical composition 2 More than or equal to 80 percent, preferably, the specific surface area is 200 to 300m 2 /kg; preferably, the fine sand is white or off-white in color.
In some embodiments of the present invention, the gypsum is selected from any one or more of natural gypsum, anhydrite, phosphogypsum;
or/and the water reducing agent is selected from polycarboxylic acid high-efficiency water reducing agents;
or/and the water-retaining agent is selected from one or two of cellulose ether, methyl cellulose ether, hydroxypropyl methyl cellulose, polyacrylamide and hydroxyethyl methyl cellulose;
or/and the fiber is selected from one or two of polypropylene fiber, polyester fiber and wood fiber.
The invention provides a preparation method of an aerated concrete repairing agent based on low-carbon gel material production, which comprises the following steps:
s1, weighing the raw materials according to a proportion;
s2, discharging the raw materials from a storage tank and uniformly mixing;
s3, when in use, adding water and stirring, and then the product can be used.
In some embodiments of the present invention, the aerated concrete waste is crushed, ground, and sieved for reuse; preferably, the screening is a 60 mesh screen.
In some embodiments of the present invention, the water added in S3 may be used with a consistency of 90-110 mm.
Compared with the prior art, the invention has the following beneficial effects:
the invention has scientific design, ingenious conception, high strength, good compatibility with aerated concrete, low production cost, easy construction and high bonding strength with autoclaved aerated concrete slabs.
The invention has high utilization rate of waste materials, the ratio of the aerated concrete waste materials in the raw materials can reach 30 percent, and the problem of treatment of the excess waste materials of aerated concrete enterprises is effectively solved.
The invention effectively reduces the production cost, protects the environment and saves energy. The repairing agent sold in the market at present mainly comprises white ordinary silicate cement or white sulphoaluminate cement, and water-retaining agent, water reducer, fiber and the like. The invention mainly uses the aerated concrete waste material, the low-carbon gel material and the sand as raw materials, has low cost, and is beneficial to environmental protection and energy saving of aerated concrete enterprises.
According to the characteristics of the low-carbon gel material, a proper amount of gypsum and fine sand are added into the waste material, so that the color difference of the repaired product is small.
Detailed Description
The following description of the present invention will be further illustrated by way of specific examples, but it should not be construed that the scope of the present invention is limited to the following examples, and various technical features in the following examples may be appropriately combined, substituted, adjusted, modified, etc. according to the inventive concept and the entire contents of the present invention, which will be apparent to those skilled in the art, and still fall within the scope of the present invention.
The invention relates to an aerated concrete repairing agent based on low-carbon gel material production, which comprises the following raw materials in parts by weight:
aerated concrete waste: 20 to 30 parts of the components in parts by weight,
low carbon gel material: 5 to 10 parts of the components in parts by weight,
gypsum: 5 to 10 parts of the components in parts by weight,
sand: 50 to 70 parts of the components in parts by weight,
and (3) a water-retaining agent: 0.2 to 0.7 part of the total weight of the composition,
water reducing agent: 0.01 to 0.02 part of a compound,
and (3) fibers: 0.01 to 0.5 part.
The mineral composition of the low-carbon gel material is composed of 30-45 wt.% f-CaO,4～8wt.％、C 2 S 40～50wt.％、CaSO 4 5～9wt.％、C 4 AF 2-5 wt%, specific surface area 300-400 m 2 /kg。
The aerated concrete waste is powder mixed dry powder which takes low-carbon gel materials as raw materials and is obtained by cutting green bodies, damaging products or disqualified products in the production process of the aerated concrete. SiO in its mineral component 2 ：50～75wt％、Ca(OH) 2 :0～25wt％。
The fine sand comprises at least one of natural quartz sand, dolomite sand and natural river sand, and SiO in chemical components 2 More than or equal to 80 percent, preferably, the specific surface area is 200 to 300m 2 /kg; preferably, the fine sand is white or off-white in color.
The gypsum is selected from one or more of natural gypsum, anhydrite and phosphogypsum;
or/and the water reducing agent is selected from polycarboxylic acid high-efficiency water reducing agents.
Or/and the water-retaining agent is selected from one or two of cellulose ether, methyl cellulose ether, hydroxypropyl methyl cellulose, polyacrylamide and hydroxyethyl methyl cellulose;
or/and the fiber is selected from one or two of polypropylene fiber, polyester fiber and wood fiber.
The invention relates to a preparation method of an aerated concrete repairing agent based on low-carbon gel material production, which comprises the following steps:
s1, weighing the raw materials according to a proportion;
s2, discharging the raw materials from a storage tank and uniformly mixing;
s3, when in use, adding water and stirring, and then the product can be used.
The aerated concrete waste is crushed, ground and screened for reuse; preferably, the screening is a 60 mesh screen.
The water is added in the step S3 to stir the mixture, and the consistency of the mixture is 90-110 mm.
S4, uniformly smearing the paint on the positions with the depth of less than 5mm, such as surface deletion, scratch and the like, when the paint is used. The slurry preparation is completed within 3 hours.
The parts described in the examples of the present invention, unless otherwise specified, refer to parts by weight.
The specific surface area of the sand used in the embodiment of the invention is 200-300 m 2 /kg; the color is white or white-like.
Example 1
The embodiment discloses a preparation method for producing an aerated concrete repairing agent based on a low-carbon gel material, which specifically comprises the following steps:
crushing, grinding and sieving the autoclaved aerated concrete waste material with a 60-mesh sieve. The raw materials are as follows: 20 parts of aerated concrete waste; 5 parts of low-carbon gel material; 70 parts of sand; 4.8 parts of natural gypsum; 0.2 parts of water-retaining agent; 0.01 part of water reducer; wood fiber 0.05 parts by weight. During construction, water is added and stirred until the consistency is 100 mm.
The detailed physical properties of the dosage regimen are shown in Table 1 below.
TABLE 1 physical Properties of the example 1 repair agent
The aerated concrete in this example was prepared from a low carbon cementitious material. Wherein the mineral composition of the low carbon gelling material is f-CaO 42wt.%,6wt.％、C 2 S 42wt.％；CaSO 4 8 wt.％、C 4 AF 2wt.%, specific surface 300m 2 /kg。
Example 2
The embodiment discloses a preparation method for producing an aerated concrete repairing agent based on a low-carbon gel material, which specifically comprises the following steps:
crushing, grinding and sieving the autoclaved aerated concrete waste material with a 60-mesh sieve. The raw materials are as follows: 30 parts of aerated concrete waste; 5 parts of low-carbon gel material; 55 parts of sand; 9.6 parts of anhydrite; 0.4 parts of water-retaining agent; 0.01 part of water reducer; wood fiber 0.05 parts by weight. During construction, water is added and stirred until the consistency is 100 mm.
The detailed physical properties of the dosage regimen are shown in Table 2 below.
TABLE 2 physical Properties of the repair agent of example 2
The aerated concrete in this example was prepared from a low carbon cementitious material. Wherein the mineral composition of the low carbon gelling material is f-CaO 42wt.%,6wt.％、C 2 S 42wt.％；CaSO 4 8 wt.％、C 4 AF 2wt.%, specific surface 300m 2 /kg。
Example 3
The embodiment discloses a preparation method for producing an aerated concrete repairing agent based on a low-carbon gel material, which specifically comprises the following steps:
crushing, grinding and sieving the autoclaved aerated concrete waste material with a 60-mesh sieve. The raw materials are as follows: 20 parts of aerated concrete waste; 10 parts of low-carbon gel material; 65 parts of sand; 4.5 parts of phosphogypsum; 0.5 parts of water-retaining agent; 0.01 part of water reducer; wood fiber 0.05 parts by weight. During construction, water is added and stirred until the consistency is 100 mm.
The detailed physical properties of the dosage regimen are shown in Table 3 below.
TABLE 3 physical Properties of the repair agent of example 3
The aerated concrete in this example was prepared from a low carbon cementitious material. Wherein the mineral composition of the low carbon gelling material is f-CaO 42wt.%,6wt.％、C 2 S 42wt.％；CaSO 4 8 wt.％、C 4 AF 2wt.%, specific surface 300m 2 /kg。
Example 4
The embodiment discloses a preparation method for producing an aerated concrete repairing agent based on a low-carbon gel material, which specifically comprises the following steps:
crushing, grinding and sieving the autoclaved aerated concrete waste material with a 60-mesh sieve. The raw materials are as follows: 25 parts of aerated concrete waste; 10 parts of low-carbon gel material; 65 parts of sand; 4.7 parts of natural gypsum; 0.3 parts of water-retaining agent; 0.02 parts of water reducer; wood fiber 0.01 parts by weight. During construction, water is added and stirred until the consistency is 100 mm.
The detailed physical properties of the dosage regimen are shown in Table 4 below.
TABLE 4 physical Properties of the example 4 repair agent
The aerated concrete in this example was prepared from a low carbon cementitious material. Wherein the mineral composition of the low carbon gelling material is f-CaO 42wt.%,6wt.％、C 2 S 42wt.％；CaSO 4 8 wt.％、C 4 AF 2wt.%, specific surface 300m 2 /kg。
As can be seen from the above examples, the aerated concrete repairing agent of the present invention has the advantages of fast setting time, high tensile bonding strength, high compressive strength, small shrinkage and excellent performance.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Claims (9)
1. The aerated concrete repairing agent produced based on the low-carbon gelling material is characterized by comprising the following raw materials in parts by weight:
aerated concrete waste: 20 to 30 parts of the components in parts by weight,
low carbon gel material: 5 to 10 parts of the components in parts by weight,
gypsum: 5 to 10 parts of the components in parts by weight,
sand: 50 to 70 parts of the components in parts by weight,
and (3) a water-retaining agent: 0.2 to 0.7 part of the total weight of the composition,
water reducing agent: 0.01 to 0.02 part of a compound,
and (3) fibers: 0.01 to 0.5 part.
2. An aerated concrete repair agent produced on the basis of a low carbon gelling material according to claim 1, wherein the mineral composition of the low carbon gelling material is from 30 to 45wt.% f-CaO,C 2 S 40～50wt.％、CaSO 4 5～9wt.％、C 4 AF 2-5 wt%, specific surface area 300-400 m 2 /kg。
3. An aerated concrete repair agent based on the production of low carbon cementitious materials according to claim 1 or 2, wherein the aerated concrete waste is a green cut, product damage or form reject powder mix dry powder during the aerated concrete production process.
4. An aerated concrete repair agent produced on the basis of low carbon gelling materials as claimed in claim 3, wherein the aerated concrete waste material is produced from low carbon gelling materials.
5. The aerated concrete repair agent produced based on the low-carbon gel material according to claim 1 or 2, wherein the fine sand comprises at least one of natural quartz sand, dolomite sand and natural river sand, and the chemical component is SiO 2 More than or equal to 80 percent, preferably, the specific surface area is 200 to 300m 2 /kg; preferably, the fine sand is white or off-white in color.
6. An aerated concrete repair agent produced based on a low carbon gelling material according to claim 1 or 2, wherein the gypsum is selected from any one or more of natural gypsum, anhydrite, phosphogypsum;
or/and the water reducing agent is selected from polycarboxylic acid high-efficiency water reducing agents;
or/and the water-retaining agent is selected from one or two of cellulose ether, methyl cellulose ether, hydroxypropyl methyl cellulose, polyacrylamide and hydroxyethyl methyl cellulose;
or/and the fiber is selected from one or two of polypropylene fiber, polyester fiber and wood fiber.
7. A method for preparing an aerated concrete repair agent based on the production of low carbon gelling materials according to any of claims 1-5, comprising the steps of:
s1, weighing the raw materials according to a proportion;
s2, discharging the raw materials from a storage tank and uniformly mixing;
s3, when in use, adding water and stirring, and then the product can be used.
8. The method according to claim 6, wherein the aerated concrete waste is crushed, ground, sieved and then used; preferably, the screening is a 60 mesh screen.
9. The method according to claim 6, wherein the water is added to the S3 to stir the mixture to a consistency of 90-110 mm.
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| CN202210237924.8A CN116768580A (en) | 2022-03-10 | 2022-03-10 | Aerated concrete repairing agent produced based on low-carbon gel material and preparation method thereof |
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| CN202210237924.8A CN116768580A (en) | 2022-03-10 | 2022-03-10 | Aerated concrete repairing agent produced based on low-carbon gel material and preparation method thereof |
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