CN115340317A - Concrete modified emulsion and construction process method thereof - Google Patents
Concrete modified emulsion and construction process method thereof Download PDFInfo
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- CN115340317A CN115340317A CN202211062050.3A CN202211062050A CN115340317A CN 115340317 A CN115340317 A CN 115340317A CN 202211062050 A CN202211062050 A CN 202211062050A CN 115340317 A CN115340317 A CN 115340317A
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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Abstract
The invention discloses a concrete modified emulsion and a construction process method thereof, which comprises 0.05-0.2% of methyl cellulose, 0.05-0.2% of defoaming agent, 0.08-0.4% of preservative, 0.05-0.2% of water reducing agent, 19-28% of first emulsion, 10-20% of second emulsion, 0.08-0.4% of thickening agent and 48-69% of water by weight. The invention is specially used for the design of a concrete modification system, does not influence the bonding property of cement and is not damaged by the cement; good water solubility, stable performance, good mechanical property, excellent erosion resistance, corrosion resistance and water resistance, and can effectively prevent surface layer from hollowing, cracking and crack explosion. The thickness of the surface layer can be 3-6 centimeters, the consumption of concrete is reduced, and the concrete is an energy-saving environment-friendly green product.
Description
Technical Field
The invention relates to the technical field of concrete chemical engineering, in particular to a concrete modified emulsion and a construction process method thereof.
Background
The cement concrete is one of the building materials with the largest application amount and the widest application range at present, is rarely used independently, and is usually modified by adding an organic polymer. Polymers useful for modifying cement concrete include water soluble polymers, polymer emulsions (or dispersions), redispersible polymer powders, and liquid polymers. The polymer modified cement-based composite material is characterized in that a polymer material which is dispersed in water or can be dispersed in water is added into cement paste, cement mortar and cement concrete, and then a plurality of properties of cement base, such as strength, deformability, bonding property, waterproof property, durability and the like, are improved.
The polymer emulsion in the current market generally has the defects of influencing the cement bonding property, being easily damaged by cement and the like, thereby greatly influencing the product property and being incapable of effectively achieving the aim of modifying cement concrete.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a concrete modified emulsion with good water solubility, stable performance and environmental protection, and the invention also aims to provide a construction process method of the concrete modified emulsion.
In order to achieve the purpose, the concrete modified emulsion comprises, by weight, 0.05% -0.2% of methyl cellulose, 0.05% -0.2% of a defoaming agent, 0.08% -0.4% of a preservative, 0.05% -0.2% of a water reducing agent, 19% -28% of a first emulsion, 10% -20% of a second emulsion, 0.08% -0.4% of a thickening agent and 48% -69% of water.
Further, the methylcellulose is Mecellose FMC 60150, the defoaming agent is Foamaster MO NXZ, the preservative is Acticide MV, the water reducing agent is Melflux 2651, the first emulsion is styrene-butadiene emulsion, the second emulsion is acrylic emulsion, and the type of the thickening agent is 1152.
Further, the methyl cellulose is dissolved by using hot water with the temperature of 70 ℃, and the content of the hot water is 20-29% by weight.
Further, the defoamer, the preservative and the water reducing agent are mutually stirred with 28-40% of water by weight to form a solution.
Further, the solid content of the first emulsion is 51%, the pH value is 7-9, and the viscosity is 50-300.
Furthermore, the solid content of the second emulsion is 50%, the pH value is 6.5-8.5, and the viscosity is 500-2000.
A construction process method using the concrete modified emulsion comprises the following specific steps:
1) Base layer treatment: performing chiseling treatment on the surface of a concrete base layer, wherein the chiseling rate is over 80 percent, and the chiseling depth is 2-4 mm;
2) And (3) washing treatment: washing the ground of the base layer to remove floating ash and oil stains;
3) Watering treatment: fully watering the base layer by using water to ensure that the internal wettability of the base layer concrete is consistent;
4) Emulsion slurry sweeping: after the surface of the base layer is dried, spraying the prepared concrete modified emulsion, and penetrating the concrete modified emulsion into the base layer concrete;
5) Pouring concrete: paving the concrete on the surface of the base layer when the concrete modified emulsion on the surface of the base layer is not dried;
6) Secondary emulsion spraying: after the concrete is paved for the first time, spraying the concrete modified emulsion for the second time, and fully vibrating by using a vibrating ruler to ensure that the emulsion fully permeates into the surface layer concrete (or the emulsion is directly added during the production of the concrete);
7) Anti-crack net sheet: and paving the reinforcing mesh, overlapping the meshes, and placing the meshes in the middle of the concrete to prevent cracks from forming.
Further, after the surface concrete is dried, the expansion joint is cut in an area with the area not larger than 20 square meters.
Furthermore, the depth of the gap of the expansion joint is 2-5 cm, and the interior of the expansion joint is filled with sealant.
Further, 1 kg of the concrete modified emulsion was sprayed over an area of 5 square meters.
The invention is specially used for the design of a concrete modification system, does not influence the bonding property of cement and is not damaged by the cement; good water solubility, stable performance, good mechanical property, excellent erosion resistance, corrosion resistance and water resistance, and can effectively prevent surface layer from hollowing, cracking and crack explosion. The thickness of the surface layer can be 3-6 centimeters, the consumption of concrete is reduced, and the concrete is an energy-saving environment-friendly green product.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships, and are used merely to facilitate description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following describes the embodiments of the present invention in detail. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are given by way of illustration and explanation only, not limitation.
The invention relates to a concrete modified emulsion, which comprises, by weight, 0.05% -0.2% of methyl cellulose, 0.05% -0.2% of a defoaming agent, 0.08% -0.4% of a preservative, 0.05% -0.2% of a water reducing agent, 19% -28% of a first emulsion, 10% -20% of a second emulsion, 0.08% -0.4% of a thickening agent and 48% -69% of water. The water-based paint comprises a base material, a water-soluble polymer, a methyl cellulose, a water-reducing agent, a thickener, a defoaming agent, a preservative, a water reducing agent and a water-soluble polymer, wherein the methyl cellulose is Mecelllose FMC 60150, the defoaming agent is Foamaster MO NXZ, the preservative is Acticide MV, the water reducing agent is Melflux 2651, the first emulsion is a butylbenzene emulsion, the second emulsion is an acrylic acid emulsion, the type of the thickener is 1152, and the water is tap water.
The styrene-butadiene emulsion has the solid content of 51 percent, the PH value of 7-9 and the viscosity of 50-300, and the acrylic emulsion has the solid content of 50 percent, the PH value of 6.5-8.5 and the viscosity of 500-2000.
Example 1
The invention relates to a concrete modified emulsion, which comprises, by weight, 0.05% of methyl cellulose, 0.05% of a defoaming agent, 0.08% of a preservative, 0.05% of a water reducing agent, 19% of a butylbenzene emulsion, 11.69% of an acrylic emulsion and 0.08% of a thickening agent.
The methyl cellulose was dissolved with 70 deg.c hot water to form a first solution, wherein the hot water content was 29% by weight. The defoaming agent, the preservative and the water reducing agent are stirred with 40 percent of water by weight before extraction, and are stirred with each other to form a second solution.
And (3) mutually stirring and mixing the first solution, the second solution, the butylbenzene emulsion and the acrylic emulsion, finally adding the thickening agent, and further stirring and mixing to form the concrete modified emulsion.
Example 2
The invention relates to a concrete modified emulsion, which comprises, by weight, 0.2% of methyl cellulose, 0.2% of defoaming agent, 0.4% of preservative, 0.2% of water reducing agent, 28% of butylbenzene emulsion, 20% of acrylic emulsion and 0.4% of thickening agent.
The methyl cellulose was dissolved with 70 deg.c hot water to form a first solution, wherein the hot water content was 22.6% by weight. The antifoaming agent, the preservative and the water reducing agent are stirred with 28% by weight of water before extraction, and are stirred with each other to form a second solution.
And (3) mutually stirring and mixing the first solution, the second solution, the butylbenzene emulsion and the acrylic emulsion, finally adding the thickening agent, and further stirring and mixing to form the concrete modified emulsion.
Example 3
The invention relates to a concrete modified emulsion, which comprises, by weight, 0.1% of methyl cellulose, 0.1% of defoaming agent, 0.3% of preservative, 0.1% of water reducing agent, 27% of butylbenzene emulsion, 14.1% of acrylic emulsion and 0.3% of thickening agent.
The methyl cellulose was dissolved with 70 deg.c hot water to form a first solution, wherein the hot water content was 20% by weight. The antifoaming agent, the preservative and the water reducing agent are stirred with 38% of water by weight before extraction, and are stirred with each other to form a second solution.
And (3) mutually stirring and mixing the first solution, the second solution, the butylbenzene emulsion and the acrylic emulsion, finally adding the thickening agent, and further stirring and mixing to form the concrete modified emulsion.
Example 4
The invention relates to a concrete modified emulsion, which comprises, by weight, 0.12% of methyl cellulose, 0.08% of defoaming agent, 0.25% of preservative, 0.17% of water reducing agent, 26% of butylbenzene emulsion, 10% of acrylic acid emulsion and 0.28% of thickening agent.
The methyl cellulose was dissolved with 70 deg.c hot water to form a first solution, wherein the hot water content was 26.1% by weight. The antifoaming agent, the preservative and the water reducing agent are stirred with water of 37 percent by weight before extraction, and are stirred with each other to form a second solution.
And (3) mutually stirring and mixing the first solution, the second solution, the butylbenzene emulsion and the acrylic emulsion, finally adding the thickening agent, and further stirring and mixing to form the concrete modified emulsion.
Example 5
The invention relates to a concrete modified emulsion, which comprises, by weight, 0.08% of methyl cellulose, 0.2% of defoaming agent, 0.36% of preservative, 0.18% of water reducing agent, 26% of butylbenzene emulsion, 12% of acrylic emulsion and 0.18% of thickening agent.
The methyl cellulose was dissolved with hot water at 70 degrees to form a first solution, wherein the hot water content was 25% by weight. The antifoaming agent, the preservative and the water reducing agent are stirred with 36% by weight of water before extraction, and are stirred with each other to form a second solution.
And (3) mutually stirring and mixing the first solution, the second solution, the butylbenzene emulsion and the acrylic emulsion, finally adding the thickening agent, and further stirring and mixing to form the concrete modified emulsion.
Example 6
According to the weight, the content of methyl cellulose is 0.1%, the content of a defoaming agent is 0.1%, the content of a preservative is 0.2%, the content of a water reducing agent is 0.1%, the content of a butylbenzene emulsion is 23.6%, the content of an acrylic emulsion is 14.6%, and the content of a thickening agent is 0.2%.
The methyl cellulose is dissolved by using hot water with the temperature of 70 ℃ to form a first solution, wherein the content of the hot water is 26.1 percent by weight. The antifoaming agent, the preservative and the water reducing agent are stirred with 35% by weight of water before extraction, and are stirred with each other to form a second solution.
And (3) mutually stirring and mixing the first solution, the second solution, the butylbenzene emulsion and the acrylic emulsion, finally adding the thickening agent, and further stirring and mixing to form the concrete modified emulsion.
Example 7
The invention relates to a construction process method of concrete modified emulsion, which comprises the following steps:
1. base layer treatment: the surface of the base layer is chiseled, the chiseling rate is 80%, the chiseling depth is 2-4 mm, the concrete is firmly grabbed, and the surface layer is prevented from hollowing.
2. And (3) washing treatment: the ground of the base layer needs to be washed clean without floating ash and oil stain, so that the base layer and the surface layer have no gap, and the surface layer is prevented from being empty and bulged; the firm foundation layer is ensured, the strength is 25MPa, no obvious crack is generated, and crack explosion of the surface layer is prevented.
3. Watering treatment: clean concrete base course will be watered fully with water and wet, ensures that the inside degree of wetness of base course concrete is unanimous.
4. Emulsion slurry sweeping: the base floor does not have open water, and after the surface is completely dried, the prepared concrete modified emulsion is sprayed, and the nano particles of the emulsion penetrate into the base concrete, so that the firmness of the base is increased, the base is sealed, the water loss rate of the surface layer is relieved, the emulsion has excellent adhesive property, the adhesive strength of the base and the surface layer can be enhanced, and the surface layer is effectively prevented from hollowing.
5. Pouring concrete: when the emulsion on the surface of the base layer is not dried, the concrete of the pavement layer is paved, the concrete modified emulsion has excellent compatibility with the concrete of the surface layer, and the emulsion is mixed in the concrete of the surface layer, so that the mechanical property of the mortar is obviously improved, the firm holding of the base layer is ensured, and the adhesion of the surface layer is realized.
Secondary emulsion spraying: after the concrete is paved for the first time, the concrete modified emulsion is sprayed for the second time, the vibration ruler is used for fully vibrating (or the emulsion is directly added during the production of the concrete, so that the concrete modified emulsion and the concrete raw materials are fully and uniformly mixed), the emulsion is fully permeated into the surface layer concrete, polymer particles are coalesced into a film along with the progress of hydration reaction, a three-dimensional space network structure is formed, the stability of the concrete performance is ensured, the carbonic acid corrosion resistance of the concrete is improved, the elasticity of the polymer can compensate the micro-cracks of the cement gel, the mechanical strength and the wear resistance are improved, the strength and the impermeability of the concrete are improved, and the hardened concrete has smaller shrinkage, better durability and longer service life; effectively prevent the crack and crack of the surface layer.
6. Anti-crack net sheet: after the emulsion is sprayed for the second time, phi 4@150 steel mesh sheets are paved, overlapped and overlapped, and placed in the middle of the concrete (or paved with steel fiber concrete). Can effectively overcome the shrinkage of concrete materials, absorb the energy of load action and prevent the formation and development of cracks.
7. And (3) surface layer light receiving: and (5) preparing a carborundum wear-resistant layer, manually scraping for multiple times, and performing machine polishing treatment. (or machine direct concrete surface finishing treatment), the vibration generated by machine finishing is compacted, and the slurry lifting function is realized to prevent cracks from forming.
8. Cutting the expansion joint: the expansion joint is cut according to the design of a drawing, the area of each expansion joint is not recommended to be larger than 20 square meters, the depth of the expansion joint is about 2-5 centimeters, the interior of the expansion joint is filled with sealant, and the expansion joint can be prevented from being burst by providing a space for the concrete to contract and expand.
The concrete prepared by the construction process method of the concrete modified emulsion has the advantages that the average thickness of a concrete surface layer is 3-6 centimeters, the minimum thickness is not less than 3 centimeters, the consumption of the concrete is reduced, and the concrete modified emulsion is the most economical, practical and environment-friendly product.
The concrete prepared by the construction process method of the concrete modified emulsion is continuously maintained for 28 days, the surface is kept moist, water is not accumulated for a long time, and cracks are avoided. Construction environment: the temperature is above 5 ℃ and below 35 ℃.1 kilogram of the concrete modified emulsion can be coated for about 5 square meters (one time).
The concrete modified emulsion is stored in a ventilated, lightproof and dry place with the room temperature of not less than 5 ℃ without extrusion, inclination and inversion. The precipitate appeared during storage and was stirred well before use. Under the high-temperature environment, the viscosity of the product is slightly reduced, the performance and the quality of the product are not influenced, and the product can be normally used. The product is prevented from being frozen in winter, and the shelf life of the product is 12 months. The concrete modified emulsion is non-toxic and non-inflammable, and is handled as non-hazardous articles during storage and transportation.
The invention relates to a concrete modified emulsion, which is a cement-based polymer emulsion, and can form a better bridging effect between a matrix and a surface material after a polymer is dehydrated into a film by depending on the fact that polymer molecules can permeate into capillary pores of the matrix, so that the adhesion between the matrix and the surface material is improved. The product has strong diffusion and permeation effects, so that materials can permeate into concrete gaps, a high-bonding-force film is formed by polymer dehydration, the internal structure of concrete is improved, a three-dimensional space network structure is formed by mutual interweaving, the flexibility and the wear resistance of concrete are improved, and the strength and the impermeability of the concrete are improved; the fluidity of the mortar is increased, the construction quality of the concrete is improved, and all technical requirements of the modified concrete are met.
The invention relates to a concrete modified emulsion, which is specially used for the design of a concrete modified system, does not influence the bonding property of cement, and is not damaged by the cement; good water solubility, stable performance, good mechanical property, excellent erosion resistance, corrosion resistance and water resistance, and can effectively prevent surface layer from hollowing, cracking and crack explosion. The thickness of the surface layer can be 3-6 cm, the consumption of concrete is reduced, and the concrete is an energy-saving environment-friendly green product.
Claims (10)
1. The concrete modified emulsion is characterized by comprising 0.05-0.2% of methyl cellulose, 0.05-0.2% of defoaming agent, 0.08-0.4% of preservative, 0.05-0.2% of water reducing agent, 19-28% of first emulsion, 10-20% of second emulsion, 0.08-0.4% of thickening agent and 48-69% of water by weight.
2. The concrete modified emulsion of claim 1, wherein the methylcellulose is Mecellose FMC 60150, the defoamer is Foamaster MO NXZ, the preservative is Acticide MV, the water reducer is Melflux 2651, the first emulsion is a butylbenzene emulsion, the second emulsion is an acrylic emulsion, and the thickener is 1152.
3. The concrete modified emulsion of claim 1, wherein the methylcellulose is dissolved in 70 ℃ hot water in an amount of from 20 to 29% by weight.
4. The concrete modified emulsion of claim 1, wherein the defoamer, the preservative, the water reducer and the 28-40% by weight of water are mixed with each other to form a solution.
5. The concrete modified emulsion of claim 1, wherein the first emulsion has a solids content of 51%, a PH of 7-9, and a viscosity of 50-300.
6. The concrete modified emulsion of claim 1, wherein the second emulsion has a solids content of 50%, a PH of 6.5 to 8.5, and a viscosity of 500 to 2000.
7. A construction process method of concrete modified emulsion is characterized by comprising the following steps:
1) Base layer treatment: roughening the surface of a concrete base layer, wherein the roughening rate is more than 80%, and the roughening depth is 2-4 mm;
2) And (3) washing treatment: washing the ground of the base layer to remove floating ash and oil stains;
3) Watering treatment: fully watering the base layer with water to ensure that the internal wettability of the base layer concrete is consistent;
4) Emulsion slurry sweeping: after the surface of the base layer is dried, spraying the prepared concrete modified emulsion, and enabling the concrete modified emulsion to penetrate into the base layer concrete;
5) Pouring concrete: paving the concrete on the surface of the base layer when the concrete modified emulsion on the surface of the base layer is not dried;
6) Secondary emulsion spraying: after the concrete is paved for the first time, spraying the concrete modified emulsion for the second time, and fully vibrating by using a vibrating ruler to ensure that the emulsion fully permeates into the surface layer concrete;
7) Anti-crack net sheet: and paving the reinforcing mesh, overlapping the meshes, and placing the meshes in the middle of the concrete to prevent cracks from forming.
8. The method for constructing concrete modified emulsion according to claim 7, wherein after the surface concrete is dried, the expansion joints are cut in an area with an area of not more than 20 square meters.
9. The method for constructing a concrete modified emulsion as claimed in claim 8, wherein the depth of the gap at the expansion joint is 2-5 cm, and the inside of the expansion joint is filled with a sealant.
10. The method of claim 7, wherein 1 kg of the concrete modified emulsion is sprayed over an area of 5 m.
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| CN202211062050.3A CN115340317A (en) | 2022-09-01 | 2022-09-01 | Concrete modified emulsion and construction process method thereof |
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| CN202211062050.3A CN115340317A (en) | 2022-09-01 | 2022-09-01 | Concrete modified emulsion and construction process method thereof |
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| US4746552A (en) * | 1986-06-25 | 1988-05-24 | National Starch And Chemical Corporation | Method of finishing a concrete structure |
| WO2008098475A1 (en) * | 2007-02-14 | 2008-08-21 | Zhijian Yi | Porous cement concrete pavement and method for construction thereof |
| CN108587354A (en) * | 2018-05-16 | 2018-09-28 | 苏州金螳螂建筑装饰股份有限公司 | Multifunctional containment hardens primary coat and its preparation method and application |
| CN111188492A (en) * | 2020-01-10 | 2020-05-22 | 中国华西企业股份有限公司 | Processing method for improving interface binding power of new and old concrete |
| CN111574940A (en) * | 2020-05-10 | 2020-08-25 | 国润新材料科技(广东)有限公司 | Interface treating agent |
| CN111608362A (en) * | 2020-05-22 | 2020-09-01 | 中山市巴固地坪科技有限公司 | Hollowing-proof and cracking-proof process for concrete terrace leveling layer |
-
2022
- 2022-09-01 CN CN202211062050.3A patent/CN115340317A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4746552A (en) * | 1986-06-25 | 1988-05-24 | National Starch And Chemical Corporation | Method of finishing a concrete structure |
| WO2008098475A1 (en) * | 2007-02-14 | 2008-08-21 | Zhijian Yi | Porous cement concrete pavement and method for construction thereof |
| CN108587354A (en) * | 2018-05-16 | 2018-09-28 | 苏州金螳螂建筑装饰股份有限公司 | Multifunctional containment hardens primary coat and its preparation method and application |
| CN111188492A (en) * | 2020-01-10 | 2020-05-22 | 中国华西企业股份有限公司 | Processing method for improving interface binding power of new and old concrete |
| CN111574940A (en) * | 2020-05-10 | 2020-08-25 | 国润新材料科技(广东)有限公司 | Interface treating agent |
| CN111608362A (en) * | 2020-05-22 | 2020-09-01 | 中山市巴固地坪科技有限公司 | Hollowing-proof and cracking-proof process for concrete terrace leveling layer |
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