CN111116133A - Concrete interface agent and surface treatment method of laminated member - Google Patents
Concrete interface agent and surface treatment method of laminated member Download PDFInfo
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- CN111116133A CN111116133A CN201911358743.5A CN201911358743A CN111116133A CN 111116133 A CN111116133 A CN 111116133A CN 201911358743 A CN201911358743 A CN 201911358743A CN 111116133 A CN111116133 A CN 111116133A
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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
- 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
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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
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00293—Materials impermeable to liquids
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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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The present disclosure provides a concrete interface agent, comprising: by weight, 30-50 parts of cement, 50-60 parts of aggregate, 0-10 parts of expanding agent, 1-3 parts of nano silicon dioxide, 1-2 parts of dispersing agent, 5-10 parts of organic silicon, 1-5 parts of polymer rubber powder, 0.5-1 part of water reducing agent, 0.2-0.5 part of water retaining agent and 0.2-0.5 part of defoaming agent. The interfacial agent disclosed by the invention can greatly improve the bonding strength between cast-in-place concrete and a prefabricated part and is environment-friendly.
Description
Technical Field
The disclosure relates to the field of buildings, in particular to a surface treatment method for a concrete interface agent and a superposed member.
Background
The prefabricated building can effectively relieve the pressure that present tradition construction mode caused the environment, and most components pass through the assembly line operation completion in mill moreover, save artifical and raise the efficiency greatly. The superposed cavity shear wall structure system is one of prefabricated assembled structures, adopts a mesh reinforcement, a lattice reinforcement or other reinforcing reinforcements to connect prefabricated plates on two sides to form a prefabricated structure with a cavity, has the advantage of high-efficiency production of a factory assembly line, and has the advantage of strong integrity of a cast-in-place structure by a cast-in-place layer of the cavity, so that the superposed cavity shear wall structure system is more and more widely applied in the fields of buildings and municipal administration at present.
For the superimposed cavity shear wall, a superimposed surface exists between the prefabricated part and the cast-in-place part, and due to the fact that the drying shrinkage performance and the elastic modulus of the prefabricated wall board and the cast-in-place concrete are different, in addition, the roughness of the inner surface of the prefabricated wall board in the production process cannot meet the design requirements easily, a layer of laitance often exists on the surface of the prefabricated wall board, the prefabricated wall board is smooth, when the superimposed cavity shear wall is subjected to the combined action of vertical load and horizontal earthquake, the cast-in-place concrete part inside the cavity shear wall is damaged before the prefabricated wall board part outside. In addition, the concrete is a heterogeneous porous brittle material, a large number of pores and microcracks exist in the prefabricated wall panel, the shrinkage cracks are generated due to rapid evaporation of surface moisture of the concrete in a plasticity stage, temperature cracks are generated in a hardening stage, the pores and the microcracks cannot be fully wetted before the cast-in-place concrete construction, the moisture of the cast-in-place concrete is easily absorbed, the pouring quality of the cast-in-place concrete is influenced, and adverse effects are caused on the bonding of the cast-in-place concrete and the prefabricated wall panel, so that the key for ensuring the overall workability of the cavity shear wall is to improve the bonding performance of the superimposed surface. The interface agent for the inner surface of the superposed cavity shear wall and the operation method thereof provided by the invention have the advantages that the roughness of about 4mm is formed on the inner surface of the prefabricated wall plate of the superposed cavity shear wall, the operation method is simple, the environment pollution caused by a large amount of concrete waste and waste slurry due to the flushing of a high-pressure water gun can be avoided, the problems of high cavity operation difficulty, high labor intensity, low efficiency and the like caused by manual roughening can be reduced, and the combination of cast-in-place concrete and the prefabricated wall plate can be effectively ensured.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present disclosure provides a concrete interface agent comprising: based on the weight portion, the weight ratio of the components,
30-50 parts of cement, 50-60 parts of aggregate, 0-10 parts of expanding agent, 1-3 parts of nano silicon dioxide, 1-2 parts of dispersing agent, 5-10 parts of organic silicon, 1-5 parts of polymer rubber powder, 0.5-1 part of water reducing agent, 0.2-0.5 part of water retaining agent and 0.2-0.5 part of defoaming agent.
According to at least one embodiment of the present disclosure, the amount of the organic solvent is, in parts by weight,
30-40 parts of cement, 50-55 parts of aggregate, 5-10 parts of expanding agent, 1-2 parts of nano silicon dioxide, 1-1.5 parts of dispersing agent, 5-7 parts of organic silicon, 2-4 parts of polymer rubber powder, 0.5-0.8 part of water reducing agent, 0.2-0.3 part of water retaining agent and 0.3-0.4 part of defoaming agent.
According to at least one embodiment of the present disclosure, the cement includes one of ordinary portland cement, white portland cement, or low alkalinity sulphoaluminate cement. The specific choice can be made by a person skilled in the art depending on the actual situation.
According to at least one embodiment of the present disclosure, the aggregate has a fineness modulus of 2.3-3.0, and the aggregate includes one of natural river sand, machine sand, or mixed sand. The specific choice can be made by a person skilled in the art depending on the actual situation.
According to at least one embodiment of the present disclosure, the swelling agent includes one of calcium sulfoaluminate, calcium oxide, calcium sulfoaluminate-calcium oxide, or a metal-based swelling agent. The specific choice can be made by a person skilled in the art depending on the actual situation.
According to at least one embodiment of the present disclosure, the nanosilica is a porous silica material having an average particle size of 30 ± 5 nm.
According to at least one embodiment of the present disclosure, the dispersant comprises one of sodium polyacrylate, sodium hexametaphosphate. The specific choice can be made by a person skilled in the art depending on the actual situation.
According to at least one embodiment of the present disclosure, the silicone is a silane-based silicone or a siloxane-based silicone. The specific choice can be made by a person skilled in the art depending on the actual situation.
According to at least one embodiment of the present disclosure, the polymer rubber powder includes one or more of vinyl acetate-ethylene copolymer rubber powder, acrylic acid rubber powder, ethylene-vinyl chloride-vinyl laurate-vinyl ester terpolymer rubber powder, vinyl acetate-ethylene and higher fatty acid-vinyl ester terpolymer rubber powder, and vinyl acetate-higher fatty acid-vinyl ester copolymer rubber powder. The specific choice can be made by a person skilled in the art depending on the actual situation.
According to at least one embodiment of the present disclosure, the water reducing agent is a polycarboxylic acid powder water reducing agent, and the water reducing rate is not lower than 25%.
According to at least one embodiment of the present disclosure, the water retaining agent is one or more of starch ether, hydroxypropyl methyl cellulose ether and hydroxyethyl methyl cellulose ether. The specific choice can be made by a person skilled in the art depending on the actual situation.
According to at least one embodiment of the present disclosure, the defoaming agent is one or more of dimethyl silicone oil, benzyl silicone oil, and polyether-modified silicone oil. The defoaming agent is an existing product, and the specific selection can be made by a person skilled in the art according to actual conditions.
According to another aspect of the present disclosure, there is provided a surface treatment method of a laminated member,
the concrete interface agent is stirred with water with the weight ratio of 20-25 percent to form a liquid interface agent;
cleaning the surface of the superposed component;
coating the liquid interface agent on the surface of the superposed member until a concave-convex surface with the thickness of 3-5mm is formed on the surface;
naturally hardening for 6-8 h.
Detailed Description
The present disclosure will be described in further detail with reference to the following embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail with reference to embodiments.
In the prior art, the liquid concrete interface agent taking silica sol as a main raw material is brittle after film forming, a coating film is easy to shrink and crack, the coating film is too fast to dry and easy to crack, the liquid concrete interface agent is mixed with other organic base materials such as ethylene-vinyl acetate copolymer emulsion, styrene-acrylic emulsion, polyacrylate and the like for use, the film forming performance is improved, the liquid concrete interface agent is mainly used for projects with large operation space and short construction time requirements such as repairing, protection and the like, and is compounded with cement, sand and the like for the inner surface treatment of a prefabricated wallboard of a superposed cavity shear wall structure system, the problems of narrow space, difficult operation, short interface agent setting time, low strength and the like exist, a weak interface is added, cracks are easy to appear between cast-in-place concrete and the prefabricated wallboard, the transportation is not changed, and layered precipitation is. Meanwhile, in the prior art, the liquid concrete interface agent taking organic matters as main raw materials has high viscosity, is beneficial to improving the bonding strength, but has poor permeability and peeling problem, and if the surface of concrete is seriously exposed, the bonding between cast-in-place concrete and the prefabricated wallboard can be seriously influenced if the surface of the concrete is not well treated.
The concrete interfacial agent that this disclosure provided can improve the cohesive strength of cast in situ concrete and prefabricated wallboard greatly, can replace the environmental protection problem that traditional concrete surface's chisel hair process and high-pressure squirt washed and brought, is the indispensable supporting material of coincide cavity shear force wall component production.
The powder interface agent for surface treatment of the superposed prefabricated part, provided by the disclosure, can improve the bonding property of cast-in-place concrete and a prefabricated wallboard, ensures the overall workability of a superposed cavity shear wall, has the functions of micro-expansion, impermeability, water resistance, crack repair and the like, and can obviously improve the durability of a concrete structure. Meanwhile, the powder interface agent is convenient to transport, simple in field operation and greatly improved in construction efficiency, and the using mode is not limited to roll coating, brush coating, spray coating and the like. In the places with anti-permeability and waterproof requirements, such as toilets, elevator shafts and the like, a screen can be used for dry spreading and bottoming, so that the passive waterproof effect is achieved.
According to a first embodiment of the present disclosure, there is provided a concrete interface agent, comprising, by weight: 30-50 parts of cement, 50-60 parts of aggregate, 0-10 parts of expanding agent, 1-3 parts of nano silicon dioxide, 1-2 parts of dispersing agent, 5-10 parts of organic silicon, 1-5 parts of polymer rubber powder, 0.5-1 part of water reducing agent, 0.2-0.5 part of water retaining agent and 0.2-0.5 part of defoaming agent.
Preferably, the concrete interface agent comprises the following components in parts by weight: 30-40 parts of cement, 50-55 parts of aggregate, 5-10 parts of expanding agent, 1-2 parts of nano silicon dioxide, 1-1.5 parts of dispersing agent, 5-7 parts of organic silicon, 2-4 parts of polymer rubber powder, 0.5-0.8 part of water reducing agent, 0.2-0.3 part of water retaining agent and 0.3-0.4 part of defoaming agent.
Optionally, the concrete interface agent comprises, by weight: 35-40 parts of cement, 45-55 parts of aggregate, 5-8 parts of expanding agent, 1.5-2 parts of nano silicon dioxide, 1.25-1.5 parts of dispersing agent, 6-7 parts of organic silicon, 3-4 parts of polymer rubber powder, 0.7-0.8 part of water reducing agent, 0.25-0.3 part of water retaining agent and 0.3-0.4 part of defoaming agent.
Optionally, the concrete interface agent comprises, by weight: 37-40 parts of cement, 50-55 parts of aggregate, 6-8 parts of expanding agent, 1.75-2 parts of nano silicon dioxide, 1.25-1.35 parts of dispersing agent, 6-6.5 parts of organic silicon, 3-3.5 parts of polymer rubber powder, 0.7-0.75 part of water reducing agent, 0.25-0.3 part of water retaining agent and 0.3-0.35 part of defoaming agent.
Optionally, the concrete interface agent is prepared by uniformly mixing the materials into powder by using a professional dry mixing device, and is transported to a construction site or a prefabrication factory in a bulk or bag form.
Alternatively, the silicone is a powdered solid, all kinds of silicone adjuvants are suitable for use in the present disclosure, preferably, silanes or siloxanes. The specific choice can be made by a person skilled in the art depending on the actual situation.
The invention also provides a surface treatment method of the superposed member, and specifically comprises an operation method of the powder type interface agent for surface treatment in the superposed cavity shear wall, wherein the dry powder type interface agent finished product is firstly put into a barrel, water accounting for 20-25% of the weight ratio of the interface agent to the concrete interface agent is added, a manual stirrer is used for stirring for 2min and then standing for 1min, and then the mixture is stirred for 1min to be used, and the use mode is not limited to roll coating, brush coating and spraying. The inner surface of the superposed cavity shear wall is cleaned before construction, loose concrete particles are ensured to be absent as far as possible, the superposed cavity shear wall is sufficiently wetted, in order to ensure the bonding effect, construction can be carried out once or twice according to conditions preferably, a concave-convex surface with the thickness of 3-5mm is formed on the surface as the best, and the cast-in-place concrete operation can be started after natural hardening for 6-8 hours. In the places with anti-permeability and waterproof requirements, such as toilets, elevator shafts and the like, a screen can be used for dry spreading and bottoming, so that the passive waterproof effect is achieved.
The concrete interface agent and the surface treatment method of the laminated member will be described in detail with reference to the following specific examples.
Concrete interface agent and water after mixing concrete embodiment as follows:
examples 1-5, as shown in table 1,
TABLE 1
The concrete interface agent of the above embodiments 1 to 5 is prepared by mixing cement, aggregate, expanding agent, nano silica, dispersant, silicone, polymer rubber powder, water reducing agent, water retaining agent, and defoaming agent, adding corresponding water in a weight percentage, stirring with a stirrer for 2min, standing for 1min, and stirring for 1 min. The inner surface of the superposed cavity shear wall is cleaned up before construction, loose concrete particles are guaranteed to be free as much as possible, the superposed cavity shear wall is sufficiently wetted, in order to guarantee the bonding effect, construction can be preferably carried out for one time or three times according to conditions until a concave-convex surface with the thickness of 3-5mm is formed on the surface, cast-in-place concrete operation can be started after natural hardening is carried out for 6-8h, and corresponding performance detection is carried out on technical indexes after maintenance is carried out for 7 days, 14 days, 21 days and 28 days after the casting is finished, as shown in table 2. According to the regulations of relevant national standards, corresponding technical index standards are listed in table 2, and the detection results show that the examples 1 to 5 all conform to the regulations of the relevant national standards.
Wherein the content of the first and second substances,
1. and (3) cooling: the maximum time interval of tensile bonding strength not less than 0.5MPa is expressed by min (refer to JC/T907-2018 concrete interface treating agent).
2. And (3) cooling time test: uniformly coating a layer of mixed interface agent on mortar test pieces of 70mm multiplied by 20mm and 40mm multiplied by 10mm respectively, placing for 20min under standard test conditions, then placing the two in opposition, lightly pressing, horizontally placing the bonded test pieces, adding a specified pressing block on the mortar test pieces of 40mm multiplied by 10mm and keeping for 30s, taking down the pressing block, and scraping off the redundant interface agent on the edges. The test pieces were cured for 14 days under standard test conditions and the draw head was bonded to a 40mm x 10mm mortar test piece with a suitable high strength adhesive 24 hours before the specified curing age. After 24h the tensile bond strength was determined according to the relevant specifications. (refer to JC/T907-
3. Anti-permeability performance: refers to the property of a material to resist permeation under the pressure of water, oil, etc.
4. And (3) testing the impermeability: (1) preparing a standard mortar anti-permeability test piece, forming according to related regulations in JC 474-. And (2) preparing a mortar anti-permeability test piece with a coating, selecting a group of waterproof coatings (the dosage is 1.5kg/m2) from the test piece in the step (1), and brushing the waterproof coatings twice. (3) And (3) removing the coating mortar impervious test piece, selecting a group of test pieces from the step (1), covering the back water surface of the test piece with mesh cloth, and brushing the waterproof paint twice. (4) And in the mortar impermeability test, stopping the test when the third water seepage occurs in the six test pieces, and recording the mortar impermeability pressure by subtracting 0.1MPa from the pressure when the water seepage occurs in the test pieces. (5) The seepage resistance pressure of the reference mortar should be 0.4 (+ 0.0, -0.1) MPa, if the standard mortar does not meet the requirement, the three groups of mortar in the batch have no seepage resistance test effect, and the test piece should be remolded for test. (6) The impervious pressure ratio is the ratio of the impervious pressure of the mortar test piece with the coating and the removed coating in the same age to the impervious pressure of the standard mortar test piece. (refer to GB18445-2012 cement-based permeable crystalline waterproof material)
Comparative example 1:
the mass percentage of the components of the interface agent is as follows: 25% of acrylic acid or derivative emulsion, 17% of vinyl acetate-ethylene emulsion, 40% of thickening agent, 0.4% of defoaming agent, 0.20% of mildew preventive and 13% of water. The prepared liquid concrete interface agent is used for No. 42.5 common cement, and the liquid interface agent: PO42.5 cement ═ 1: 2.
The test results of the tested comparative examples are shown in table 2: shear bond strength index: 7d is 0.8MPa, 14d is 1.4MPa, tensile bond strength index: the untreated 7d was 0.6MPa, and the untreated 14d was 0.9 MPa. Standing for 15 min. The expansion ratio was limited to-0.008 for 7d in water and-0.014 for 21d in air.
TABLE 2
The experimental results show that the concrete interface agent can improve the bonding property of cast-in-place concrete and the prefabricated wall panel through proper proportion combination of the components, ensure the overall workability of the superimposed cavity shear wall, have the functions of micro-expansion, impermeability, water resistance, crack repair and the like, and can obviously improve the durability of a concrete structure.
The concrete interface agent of the present disclosure has better shear bond strength, tensile bond strength, longer cool down time, and better micro-expansion performance than comparative example 1. For example, in example 1, compared with comparative example 1, the 14d shear bond strength is improved by 21%, the 14d untreated tensile bond strength is improved by 33%, the cooling time is improved by 100%, and the 21d limiting expansion value in the air shows that the micro-expansion performance is outstanding.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (10)
1. A concrete interface agent, comprising: based on the weight portion, the weight ratio of the components,
30-50 parts of cement, 50-60 parts of aggregate, 0-10 parts of expanding agent, 1-3 parts of nano silicon dioxide, 1-2 parts of dispersing agent, 5-10 parts of organic silicon, 1-5 parts of polymer rubber powder, 0.5-1 part of water reducing agent, 0.2-0.5 part of water retaining agent and 0.2-0.5 part of defoaming agent.
2. The concrete interface agent of claim 1, wherein the surfactant, in parts by weight,
30-40 parts of cement, 50-55 parts of aggregate, 5-10 parts of expanding agent, 1-2 parts of nano silicon dioxide, 1-1.5 parts of dispersing agent, 5-7 parts of organic silicon, 2-4 parts of polymer rubber powder, 0.5-0.8 part of water reducing agent, 0.2-0.3 part of water retaining agent and 0.3-0.4 part of defoaming agent.
3. The concrete interface agent of claim 1 or 2, wherein the cement comprises one of ordinary portland cement, white portland cement, or low-alkalinity sulphoaluminate cement.
4. The concrete interface agent according to claim 1 or 2, wherein the aggregate has a fineness modulus of 2.3-3.0, and the aggregate includes one of natural river sand, machine-made sand, or mixed sand.
5. The concrete interface agent of claim 1 or 2, wherein the expanding agent comprises one of calcium sulfoaluminate, calcium oxide, calcium sulfoaluminate-calcium oxide, or a metal-based expanding agent.
6. The concrete interface agent according to claim 1 or 2, wherein the nano silica is a porous silica material having an average particle diameter of 30 ± 5 nm.
7. The concrete interface agent of claim 1 or 2, wherein the dispersant comprises one of sodium polyacrylate and sodium hexametaphosphate.
8. The concrete interface agent as claimed in claim 1 or 2, wherein the polymer rubber powder comprises one or more of vinyl acetate-ethylene copolymer rubber powder, acrylic rubber powder, ethylene-vinyl chloride-vinyl laurate terpolymer rubber powder, vinyl acetate-ethylene-higher fatty acid vinyl ester terpolymer rubber powder and vinyl acetate-higher fatty acid vinyl ester copolymer rubber powder.
9. The concrete interface agent as claimed in claim 1 or 2, wherein the water reducing agent is a polycarboxylic acid powder type water reducing agent, and the water reducing rate is not less than 25%.
10. A surface treatment method of a laminated member is characterized in that,
the concrete interface agent as claimed in claim 1 or 2, which is stirred with 20-25 wt% of water to form a liquid interface agent;
cleaning the surface of the superposed component;
coating the liquid interface agent on the surface of the superposed member until a concave-convex surface with the thickness of 3-5mm is formed on the surface;
naturally hardening for 6-8 h.
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| CN112876199A (en) * | 2021-02-03 | 2021-06-01 | 中铁西南科学研究院有限公司 | Novel adhesive for sound-absorbing spraying material |
| CN113880511A (en) * | 2020-07-03 | 2022-01-04 | 江苏东曌建筑产业创新发展研究院有限公司 | Waterproof protection material for assembled prefabricated outer wall surface layer and manufacturing method |
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| 夏寿荣等: "《最新混凝土外加剂生产配方精选400例》", 31 January 2014 * |
| 孟龙飞等: "自密实混凝土与预制混凝土构件粘结平面抗剪性能研究", 《建筑结构》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113880511A (en) * | 2020-07-03 | 2022-01-04 | 江苏东曌建筑产业创新发展研究院有限公司 | Waterproof protection material for assembled prefabricated outer wall surface layer and manufacturing method |
| CN112876199A (en) * | 2021-02-03 | 2021-06-01 | 中铁西南科学研究院有限公司 | Novel adhesive for sound-absorbing spraying material |
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