CN114685113B - Surface maintenance method for high-strength fair-faced concrete - Google Patents
Surface maintenance method for high-strength fair-faced concrete Download PDFInfo
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- CN114685113B CN114685113B CN202011598628.8A CN202011598628A CN114685113B CN 114685113 B CN114685113 B CN 114685113B CN 202011598628 A CN202011598628 A CN 202011598628A CN 114685113 B CN114685113 B CN 114685113B
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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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to the technical field of concrete processing and maintenance, and particularly relates to a surface maintenance method of high-strength fair-faced concrete, which is characterized in that concrete characteristics are enhanced, tensile property of the concrete is enhanced, impermeability and durability of the concrete are improved, multi-level and multi-performance of the concrete are improved, the effect of the concrete is improved, the service life of the concrete is prolonged, and the surface maintenance method of the high-strength fair-faced concrete comprises the following raw materials in parts by weight: 150 to 180 parts of ordinary portland cement, 50 to 75 parts of mineral powder, 60 to 80 parts of fly ash, 100 to 150 parts of quartz stone, 120 to 130 parts of wollastonite powder, 50 to 70 parts of water reducing agent, 150 to 180 parts of polypropylene fiber, 100 to 130 parts of steel fiber, 200 to 300 parts of clear water and 55 to 70 parts of mortar reinforcing agent.
Description
The technical field is as follows:
the invention belongs to the technical field of concrete processing and maintenance, and particularly relates to a surface maintenance method of high-strength fair-faced concrete.
Background art:
the fair-faced concrete is the most widely used material for modern buildings, is also called as decorative concrete due to the extremely good decorative effect, does not use any material such as coating, tile sticking, stone sticking and the like after the concrete is poured, is the most basic guarantee for the modern buildings, but can be sprayed with a layer of waterproof protective film due to worry about the penetration or the degradation of the fair-faced concrete by rainwater, but cannot meet the long-term surface maintenance requirement of the concrete; chinese patent 201610258847.9 discloses a dam underwater concrete facing construction method, which comprises leveling a riprap face after underwater bank riprap is performed by a ship; sewing a geotextile bag, wherein the length of the geotextile bag is the sum of the length of the underwater facing of the earthen dam and the length of the above-water facing; sequentially laying geotextile bags along the construction direction of a shore line; filling concrete into the bottom of the geotextile bag, wherein the filling length is based on the designed slope length; filling cuffs at the tail ends of the geotextile bags positioned under water in the water direction in sequence; the concrete flows and fills in the geotextile bag to fill the whole geotextile bag, and after the concrete is solidified and hardened, an underwater concrete protective surface is formed at a preset design position to play a role in protecting the underwater part of the soil dam; after the concrete in the geotextile bag reaches the designed strength, carrying out capping or concrete filling of an anchoring ditch, carrying out slope toe riprap presser foot construction, being not limited by seasons, and being capable of being constructed in both dry season and rich water period; chinese patent 201810559139.8 discloses high-durability fair-faced concrete and a construction method thereof, wherein the high-durability fair-faced concrete comprises cement, a cementing material, water, aggregate and a mineral admixture, the mineral admixture mainly comprises fly ash, the water-cement ratio of the high-durability fair-faced concrete is 0.3-0.35, the water consumption for blending is less than or equal to 160kg/m < 3 >, the using amount of the cementing material is 400-500 kg/m < 3 >, and the using amount of the fly ash is 30-40% of the total amount of the cementing material; a construction method of high-durability fair-faced concrete comprises the following steps: identifying and determining factors influencing the high-durability concrete in the coastal environment, step two, redesigning the durability of the concrete structure, step three, preparing high-durability clear water concrete, step four, constructing the high-durability clear water concrete, and step five, dismantling a template and protecting a finished product; chinese patent 201910910265.8 discloses a high-strength concrete and a preparation process thereof, wherein the high-strength concrete is prepared from the following raw materials by weight: 451 to 473 portions of cement, 198 to 217 portions of mineral admixture, 545 to 570 portions of fine aggregate, 1110 to 1145 portions of coarse aggregate, 135 to 147 portions of mixing water and 26 to 29 portions of admixture; the method has the advantages of reasonably utilizing the sewage on the mixing plant, and maintaining or even improving the strength of the high-strength concrete; the preparation method comprises the following steps: (1) Putting cement, mineral admixture, fine aggregate and coarse aggregate into a concrete mixer according to a proportion, and uniformly stirring; (2) Adding the additive into mixing water, and uniformly stirring to obtain mixed water; (3) Adding the mixed water into a stirrer, and uniformly stirring to obtain high-strength concrete; the concrete in the prior art and the products of the patent is complex in processing and maintenance process, low in strength, incapable of meeting the maintenance requirement of the concrete and limited in service life; therefore, the invention discloses a surface maintenance method of high-strength fair-faced concrete, which enhances the characteristics of the concrete, enhances the tensile property of the concrete, improves the impermeability and the durability of the concrete by adding the mixed fiber into the concrete, improves the multilevel and multifunctionality of the concrete, improves the effect of the concrete, prolongs the service life of the concrete, and has good social value and economic benefit.
The invention content is as follows:
the invention aims to overcome the defects in the prior art and provide a method for maintaining the surface of high-strength fair-faced concrete with internal mixed fibers.
In order to realize the aim, the high-strength fair-faced concrete surface maintenance material comprises the following raw materials in parts by weight: 90-150 parts of portland cement, 30-50 parts of mineral powder, 15-25 parts of fly ash, 20-40 parts of sierozem powder, 70-100 parts of quartz sand, 10-40 parts of wollastonite powder, 15-20 parts of polypropylene fiber, 15-20 parts of steel fiber, 3-5 parts of wood fiber, 20-50 parts of mortar reinforcing agent and 100-200 parts of clear water.
The Portland cement related to the invention is Portland cement No. 62.5.
The mineral powder is prepared by mixing S105 mineral powder and S95 mineral powder according to a mass ratio of 1.
The fly ash related to the invention is I-grade fly ash.
The invention relates to a mortar reinforcing agent which comprises the following components in parts by weight: 5 to 11 portions of polycarboxylic acid water reducing agent, 8 to 12 portions of hydroxypropyl methylcellulose, 11 to 13 portions of diethylene glycol, 3 to 5 portions of triethanolamine, 3 to 4 portions of polyacrylamide, 3 to 4 portions of polyvinyl alcohol powder, 2 to 3 portions of sodium dodecyl sulfate and 7 to 10 portions of anhydrous sodium sulphate.
The invention relates to a surface maintenance method of high-strength fair-faced concrete, which comprises the following steps:
(1) Preparing a high-strength fair-faced concrete surface maintenance material: weighing portland cement, mineral powder, fly ash, sierozem powder, quartz sand and wollastonite powder in parts by weight, sending the materials into a high-speed double-shaft stirrer, stirring and mixing the materials for 5 to 7 minutes at the normal temperature by the high-speed double-shaft stirrer at the rotating speed of 20 to 30rpm, adding polypropylene fibers, steel fibers and wood fibers in parts by weight, reducing the rotating speed to 10 to 15rpm, mixing and stirring the materials for 5 to 10 minutes until the materials are uniformly mixed, continuing to add clear water and a mortar reinforcing agent in parts by weight, and continuing to stir the materials for 5 to 10 minutes to prepare the high-strength clear water concrete surface maintenance material;
(2) Spraying a high-strength fair-faced concrete surface maintenance material on the paved fair-faced concrete surface;
(3) The clear water is piled twice, and the flattening and the light collecting are carried out;
(4) And rolling and coating the high-strength fair-faced concrete surface maintenance material.
Compared with the prior art, the invention has scientific and reasonable formula, simple and convenient preparation process, stronger bonding force with the bottom layer concrete, compact structure after solidification, hard and flexible texture, good compression-fold ratio, enhanced tensile property of the concrete surface, improved impermeability and durability, improved multilevel and multi-performance of the concrete, high compressive strength, no blister and water seepage, improved concrete effect and prolonged concrete service life.
The specific implementation mode is as follows:
the invention is further described below by way of examples.
Example 1:
the embodiment relates to a surface maintenance method of high-strength fair-faced concrete, which comprises the following raw materials in parts by weight: 90 parts of Portland cement, 30 parts of mineral powder, 15 parts of fly ash, 20 parts of ash calcium powder, 70 parts of quartz sand, 10 parts of wollastonite powder, 15 parts of polypropylene fiber, 15 parts of steel fiber, 3 parts of wood fiber, 20 parts of mortar reinforcing agent and 100 parts of clear water.
The high-strength fair-faced concrete surface maintenance method related to the embodiment comprises the following steps:
(1) Preparing a high-strength fair-faced concrete surface maintenance material: weighing portland cement, mineral powder, fly ash, sierozem powder, quartz sand and wollastonite powder in parts by weight, sending the materials into a high-speed double-shaft stirrer, stirring and mixing the materials for 5 to 7 minutes at the normal temperature by the high-speed double-shaft stirrer at the rotating speed of 20 to 30rpm, adding polypropylene fibers, steel fibers and wood fibers in parts by weight, reducing the rotating speed to 10 to 15rpm, mixing and stirring the materials for 5 to 10 minutes until the materials are uniformly mixed, continuing to add clear water and a mortar reinforcing agent in parts by weight, and continuing to stir the materials for 5 to 10 minutes to prepare the high-strength clear water concrete surface maintenance material;
(2) Spraying a high-strength fair-faced concrete surface maintenance material on the paved fair-faced concrete surface;
(3) The clear water is piled twice, and the flattening and the light collecting are carried out;
(4) And rolling and coating the high-strength fair-faced concrete surface maintenance material.
The surface maintenance method of the high-strength fair-faced concrete has the advantages of good impermeability and durability of the concrete surface and strong bonding force.
Example 2:
the embodiment is the same as the embodiment 1 in maintenance method, except that: the maintenance material comprises the following raw materials in parts by weight: 150 parts of portland cement, 50 parts of mineral powder, 25 parts of fly ash, 40 parts of sierozem powder, 100 parts of quartz sand, 40 parts of wollastonite powder, 20 parts of polypropylene fiber, 20 parts of steel fiber, 5 parts of wood fiber, 50 parts of mortar reinforcing agent and 200 parts of clear water.
The surface maintenance method of the high-strength bare concrete related by the embodiment has the advantages of strong tensile property and high compressive strength of the concrete surface.
Claims (2)
1. The surface maintenance method of the high-strength fair-faced concrete is characterized in that the surface maintenance material of the high-strength fair-faced concrete comprises the following raw materials in parts by weight: 90-150 parts of portland cement, 30-50 parts of mineral powder, 15-25 parts of fly ash, 20-40 parts of sierozem powder, 70-100 parts of quartz sand, 10-40 parts of wollastonite powder, 15-20 parts of polypropylene fiber, 15-20 parts of steel fiber, 3-5 parts of wood fiber, 20-50 parts of mortar reinforcing agent and 100-200 parts of clear water, wherein the portland cement is No. 62.5 portland cement, the mineral powder is prepared by mixing S105 mineral powder and S95 mineral powder according to a mass ratio of 1: 5 to 11 portions of polycarboxylic acid water reducing agent, 8 to 12 portions of hydroxypropyl methylcellulose, 11 to 13 portions of diglycol, 3 to 5 portions of triethanolamine, 3 to 4 portions of polyacrylamide, 3 to 4 portions of polyvinyl alcohol powder, 2 to 3 portions of sodium dodecyl sulfate and 7 to 10 portions of anhydrous sodium sulphate.
2. The method of maintaining a high strength bare concrete surface according to claim 1 wherein the high strength bare concrete surface maintenance comprises the steps of:
(1) Preparing a high-strength fair-faced concrete surface maintenance material: weighing portland cement, mineral powder, fly ash, sierozem powder, quartz sand and wollastonite powder in parts by weight, sending the materials into a high-speed double-shaft stirrer, stirring and mixing the materials for 5 to 7 minutes at the normal temperature by the high-speed double-shaft stirrer at the rotating speed of 20 to 30rpm, adding polypropylene fibers, steel fibers and wood fibers in parts by weight, reducing the rotating speed to 10 to 15rpm, mixing and stirring the materials for 5 to 10 minutes until the materials are uniformly mixed, continuing to add clear water and a mortar reinforcing agent in parts by weight, and continuing to stir the materials for 5 to 10 minutes to prepare the high-strength clear water concrete surface maintenance material;
(2) Spraying a high-strength fair-faced concrete surface maintenance material on the paved fair-faced concrete surface;
(3) The clear water is piled twice, and the flattening and the light collecting are carried out;
(4) And rolling and coating the high-strength fair-faced concrete surface maintenance material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011598628.8A CN114685113B (en) | 2020-12-29 | 2020-12-29 | Surface maintenance method for high-strength fair-faced concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011598628.8A CN114685113B (en) | 2020-12-29 | 2020-12-29 | Surface maintenance method for high-strength fair-faced concrete |
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| CN114685113A CN114685113A (en) | 2022-07-01 |
| CN114685113B true CN114685113B (en) | 2023-01-03 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058591A (en) * | 2012-12-26 | 2013-04-24 | 上海天补建筑科技有限公司 | Protective coloring material used for concrete surfaces and preparation method thereof |
| WO2015085807A1 (en) * | 2013-12-13 | 2015-06-18 | 深圳大学 | Method for reinforcing and protecting concrete using fiber composite material |
| CN107117896A (en) * | 2017-04-27 | 2017-09-01 | 湖北武大珞珈工程结构检测咨询有限公司 | A kind of preparation method of imitative clear-water concrete facing mortar and concrete casing |
| CN108483981A (en) * | 2018-04-23 | 2018-09-04 | 青岛环秀涂料有限公司 | A kind of mortar reinforcing agent and preparation method thereof |
| CN110467403A (en) * | 2019-09-17 | 2019-11-19 | 江苏广宇建设集团有限公司 | It is a kind of to extend self-compaction clear-water concrete material and preparation method thereof greatly |
| CN110467387A (en) * | 2019-09-20 | 2019-11-19 | 江西蓝宝新材料有限公司 | Imitative clear-water concrete texture coating and preparation method thereof |
-
2020
- 2020-12-29 CN CN202011598628.8A patent/CN114685113B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058591A (en) * | 2012-12-26 | 2013-04-24 | 上海天补建筑科技有限公司 | Protective coloring material used for concrete surfaces and preparation method thereof |
| WO2015085807A1 (en) * | 2013-12-13 | 2015-06-18 | 深圳大学 | Method for reinforcing and protecting concrete using fiber composite material |
| CN107117896A (en) * | 2017-04-27 | 2017-09-01 | 湖北武大珞珈工程结构检测咨询有限公司 | A kind of preparation method of imitative clear-water concrete facing mortar and concrete casing |
| CN108483981A (en) * | 2018-04-23 | 2018-09-04 | 青岛环秀涂料有限公司 | A kind of mortar reinforcing agent and preparation method thereof |
| CN110467403A (en) * | 2019-09-17 | 2019-11-19 | 江苏广宇建设集团有限公司 | It is a kind of to extend self-compaction clear-water concrete material and preparation method thereof greatly |
| CN110467387A (en) * | 2019-09-20 | 2019-11-19 | 江西蓝宝新材料有限公司 | Imitative clear-water concrete texture coating and preparation method thereof |
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| CN114685113A (en) | 2022-07-01 |
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