Printing decorative high-quality concrete and construction method thereof

Abstract

The invention discloses printing decorative high-quality concrete and a construction method thereof, and relates to the technical field of municipal and building materials, the printing decorative high-quality concrete comprises the following materials: cement, a reinforcing agent, defoaming powder, a water reducing agent, a retarder, water, superfine sand, coarse sand, pebbles and an additive, and the printing decorative high-quality concrete is prepared by the following steps: 1, weighing the cement, the reinforcing agent, the defoaming powder, the water reducing agent, the retarder, the water, the sand, the pebbles and the additive; placing and proportioning in sequence; 2, adding the cement and the reinforcing agent into a stirrer, adding the defoaming powder and the additive, finally mixing the water, the retarder and the water reducing agent, and stirring; 3, adding the superfine sand and the coarse sand, and stirring; 4, adding pebbles and stirring; 5, pouring the concrete into the mold, vibrating and compacting, and leveling; and 6, covering a printing mold after pouring, and sealing with wet cloth and a thin film. A printing mold is covered after pouring, printing patterns are formed on the surface of concrete, construction time and labor cost are saved, construction efficiency is improved, raised dust is reduced, and the construction process is more efficient and environmentally friendly.

Description

Technical Field

[0001] The invention relates to the technical field of municipal and building materials, and in particular to printed decorative high-quality concrete and a construction method thereof. Background Art

[0002] At present, the surface colors of decorative concrete are divided into primary colors and colored colors, and the surface tissue structures include texture finishes, exposed stone finishes, and mechanical finishes. Decorative concrete can also achieve simulated stone decorative effects. In addition, decorative concrete has also made significant progress in construction technology and application scenarios. Through the improvement of modern technology, concrete can not only achieve a variety of color options by adding different pigments and admixtures, but also achieve a variety of texture finishes through different molds.

[0003] However, in the construction of traditional printed facing concrete, textured facing often requires cumbersome processes such as pickling. Such methods not only require a lot of manual operations, but also require multiple surface treatments, which not only increases the construction time, but also produces a large amount of acid, affecting the environmental friendliness of the construction environment. Due to the need for additional operations, the entire process is time-consuming and costly, and errors are prone to occur during the construction process, affecting the final decorative effect.

[0004] Secondly, the surface of traditional printed concrete is easy to accumulate dust and difficult to clean: due to the removal of the demoulding powder of the protruding parts, the surface treatment of traditional printed concrete is uneven, forming an uneven surface structure, which is easy to accumulate dust, stains and water stains during use, especially in the inner corners. This surface structure is difficult to keep clean. In outdoor environments, daily cleaning work requires a lot of manpower and time, and the cleaning effect is not good. Due to the complexity of surface maintenance, it is difficult for traditional printed concrete to maintain its original appearance during use, and long-term exposure will lead to a decline in decorative effect;

[0005] Finally, traditional concrete has low strength and poor durability, and needs to be coated with protective coatings later: Although the existing printed concrete can form a certain texture finish in terms of surface decoration effect, after spreading the reinforcing material (dry powder), when the surface begins to solidify but has not yet hardened, the release powder is evenly sprinkled to allow the release powder to penetrate the entire concrete surface. After the surface is treated, the structure of the concrete is relatively loose and has poor density, resulting in low bonding strength. In order to avoid wear and weathering of the concrete surface, traditional processes often require the application of transparent protective coatings on the concrete surface, which increases the complexity and cost of subsequent maintenance. Moreover, even if coatings are used for protection, due to the poor durability of the concrete itself, cracks and shedding are prone to occur after long-term use, affecting the service life and economic benefits of sidewalks and other application scenarios. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides printed decorative high-quality concrete and a construction method thereof, which solves the problems that the traditional construction method is time-consuming and lacks environmental protection.

[0007] In order to solve the above technical problems, the technical solution provided by the present invention is printed decorative high-quality concrete and its construction method:

[0008] Printed decorative high-quality concrete includes the following materials and their weight portions: 400 to 500 parts of cement, 20 to 25 parts of reinforcing agent, 0.4 to 0.5 parts of defoaming powder, 12 to 21 parts of water reducing agent, 115 to 154 parts of water, 0.4 to 0.5 parts of retarder, 209 to 263 parts of extra fine sand, 371 to 465 parts of coarse sand, 866 to 1083 parts of gravel, and 0.3 to 0.5 parts of admixture.

[0009] Preferably, the water reducer is a polycarboxylic acid-based water reducer, which is specifically copolymerized from polyether monomers, acrylic acid, ammonium persulfate, thioglycolic acid, maleic anhydride, phosphate ester, and the like.

[0010] Preferably, the admixture is a shrinkage reducing agent, which is specifically composed of polypropylene glycol, ethylene oxide methanol additives, ethylene oxide propylene oxide block polymers, ethylene oxide propylene oxide random polymers, ethylene oxide cycloalkyl additives, ethylene oxide methyl additives, ethylene oxide phenyl additives, ethylene oxide propylene oxide block polymer methylphenyl additives, ethylene oxide methanol added at both ends, and ethylene oxide dimethylamino additives.

[0011] Preferably, the diameter of the ultra-fine sand ranges from 0.075 mm to 0.3 mm, the diameter of the coarse sand ranges from 0.8 mm to 5.0 mm, the diameter of the gravel ranges from 3 mm to 31.5 mm, and the retarder is a sugar retarder.

[0012] The construction method of printed decorative high-quality concrete includes the following steps:

[0013] S1. Material preparation: During the material preparation stage, the following materials must be accurately weighed in proportion: cement, reinforcing agent, defoaming powder, water reducing agent, water, retarder, extra fine sand, coarse sand, gravel and admixture. After all materials are prepared, they should be placed in the designated area in order to ensure that the proportions are correct before construction.

[0014] S2. Mixing cement slurry: First, corresponding amounts of cement and reinforcing agent are mixed as predetermined, added into a mixer at a suitable temperature, then defoaming powder and admixture are added, and finally, water and retarder are pre-mixed, and then mixed with water reducing agent to obtain composite solution A, and then the composite solution A is slowly poured into the mixer and stirred to obtain uniform cement slurry with good fluidity without segregation;

[0015] S3, mixing cement mortar: after the mixing in step S2 is completed, the temperature of the mixer is maintained, and then extra-fine sand is first added and then coarse sand is added to make cement mortar;

[0016] S4, mixing to concrete: maintaining the mixer speed in step S3, adding gravel to the cement mortar and mixing to form slightly slurry concrete;

[0017] S5. Concrete pouring: Pour the mixed concrete evenly into the mold, use high-frequency vibrating equipment to compact the concrete, and quickly level it after compaction to ensure that the concrete surface is aligned with the predetermined elevation;

[0018] S6. Printing and curing concrete: After pouring the concrete, cover it with printing molds, wet cotton cloth, and plastic film for moisturizing and curing. Keep it airtight and the wet cotton cloth moist. Curing for 7 to 14 days (after the concrete strength meets the requirements, the printing mold can be removed first, and then moisturizing and curing can be continued).

[0019] Preferably, in the step S2, the mixed water, retarder and water reducing agent are added to a mixer, the speed of stirring is 30 r / min to 50 r / min, and the stirring time is 3 min to 5 min.

[0020] Preferably, in the step S3, when adding the extra fine sand and the coarse sand, the rotation speed of the mixer is 40 r / min to 60 r / min, and the stirring time is 5 min to 8 min.

[0021] Preferably, in the step S5, the vibration frequency of the high-frequency vibration equipment is 3000 times / min to 5000 times / min, and each position needs to be vibrated for 5S to 10S.

[0022] Preferably, in the step S6, the wet cotton cloth needs to be replenished with water in time to keep it moist, and the curing temperature needs to be maintained above 8°C.

[0023] The advantages of the present invention compared with the prior art are:

[0024] 1. The present invention achieves excellent decorative effects by naturally forming a textured surface after pouring concrete, without the need for additional secondary surface treatment operations such as pickling, thereby saving construction time and labor costs, improving construction efficiency, and reducing environmentally unfriendly factors such as pickling, making the construction process more efficient and environmentally friendly.

[0025] 2. The present invention forms a naturally transitioned texture finish through reasonable material ratios and optimized construction technology. The surface has no obvious edges and corners and is easy to clean. During use, dust and stains are not easy to accumulate and can maintain their original appearance for a long time. Frequent cleaning and maintenance are not required, and maintenance costs are greatly reduced. It is suitable for long-term use in outdoor environments.

[0026] 3. The present invention makes the concrete structure more compact, has higher compressive strength and durability, and has no bubbles or cracks on the surface through the scientific ratio of the reinforcing agent, defoaming powder and water reducing agent. The shrinkage reducing agent can achieve the purpose of improving the quality of concrete and extending the service life through the different chemical components. At the same time, due to the dense structure, no additional transparent protective coating is required during use. The cast-in-place concrete has good integrity with the base layer, which can significantly improve the compression resistance and wear resistance of the sidewalk pavement, extend its service life, and give the sidewalk better durability and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The figure is a flow chart of the method steps of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1, in combination with Figure 1 , printed decorative high-quality concrete and its construction method:

[0030] Stamped decorative high-quality concrete, including the following materials and weight parts: 400 parts of cement, 20 parts of reinforcing agent, 0.4 parts of defoaming powder, 16 parts of water reducing agent, 0.4 parts of retarder, 123 parts of water, 209 parts of extra fine sand, 371 parts of coarse sand, 866 parts of gravel, and 0.3 parts of admixture;

[0031] The water reducer adopts a polycarboxylic acid water reducer, which is specifically copolymerized by polyether monomer, acrylic acid, ammonium persulfate, thioglycolic acid, maleic anhydride, phosphate ester, etc.;

[0032] The admixture is a shrinkage reducing agent, which is specifically composed of polypropylene glycol, ethylene oxide methanol additives, ethylene oxide propylene oxide block polymers, ethylene oxide propylene oxide random polymers, ethylene oxide cycloalkyl additives, ethylene oxide methyl additives, ethylene oxide phenyl additives, ethylene oxide propylene oxide block polymer methyl phenyl additives, ethylene oxide methanol added at both ends, and ethylene oxide dimethylamine additives;

[0033] The diameter of the extra-fine sand ranges from 0.075 to 0.15 mm, the diameter of the coarse sand ranges from 1.4 to 2.36 mm, the diameter of the gravel ranges from 16 to 25 mm, and the retarder is white sugar;

[0034] The construction method of printed decorative high-quality concrete includes the following steps:

[0035] S1. Material preparation: During the material preparation stage, the following materials must be accurately weighed in proportion: cement, reinforcing agent, defoaming powder, water reducing agent, water, retarder, sand, gravel and admixture. After all materials are prepared, they should be placed in the designated area in order to ensure that the proportions are correct before construction.

[0036] S2. Mixing cement slurry: First, corresponding amounts of cement and reinforcing agent are mixed as predetermined, added into a mixer at a suitable temperature, then defoaming powder and admixture are added, and finally, water and retarder are pre-mixed, and then mixed with water reducing agent to obtain composite solution A, and then the composite solution A is slowly poured into the mixer and stirred to obtain uniform cement slurry with good fluidity without segregation;

[0037] S3, mixing cement mortar: after the mixing in step S2 is completed, the temperature of the mixer is maintained, and then extra-fine sand is first added and then coarse sand is added to make cement mortar;

[0038] S4, mixing to concrete: maintaining the mixer speed in step S3, adding gravel to the cement mortar and mixing to form slightly slurry concrete;

[0039] S5. Concrete pouring: Pour the mixed concrete evenly into the mold, use high-frequency vibrating equipment to compact the concrete, and quickly level it after compaction to ensure that the concrete surface is aligned with the predetermined elevation;

[0040] S6, printing and curing concrete: After the concrete is poured, cover the printing mold, wet cotton cloth, and plastic film for moisturizing and curing, keep it airtight and the wet cotton cloth moist, and cure for 7 days, during which a release agent is pre-coated when covering the printing mold;

[0041] In step S2, the mixed water, retarder and water reducer are added into the mixer, and the stirring speed is 30r / min, and the stirring time is 3min; in step S3, when adding extra fine sand and coarse sand, the mixer speed is 40r / min, and the stirring time is 5min; in step S5, the vibration frequency of the high-frequency vibration equipment is 3000 times / min, and each position needs to be vibrated for 5S; in step S6, the wet cotton cloth needs to be replenished with water in time to keep it moist, and the curing temperature needs to be maintained above 8°C.

[0042] Embodiment 2, in combination with Figure 1 , printed decorative high-quality concrete and its construction method:

[0043] Stamped decorative high-quality concrete, including the following materials and weight parts: 450 parts of cement, 23 parts of reinforcing agent, 0.45 parts of defoaming powder, 19 parts of water reducing agent, 142 parts of water, 0.45 parts of retarder, 236 parts of extra fine sand, 414 parts of coarse sand, 975 parts of gravel, and 0.4 parts of admixture;

[0044] The water reducer adopts a polycarboxylic acid water reducer, which is specifically copolymerized by polyether monomer, acrylic acid, ammonium persulfate, thioglycolic acid, maleic anhydride, phosphate ester, etc.;

[0045] The admixture is a shrinkage reducing agent, which is specifically composed of polypropylene glycol, ethylene oxide methanol additives, ethylene oxide propylene oxide block polymers, ethylene oxide propylene oxide random polymers, ethylene oxide cycloalkyl additives, ethylene oxide methyl additives, ethylene oxide phenyl additives, ethylene oxide propylene oxide block polymer methyl phenyl additives, ethylene oxide methanol added at both ends, and ethylene oxide dimethylamine additives;

[0046] The diameter of the extra-fine sand ranges from 0.1 to 0.3 mm, the diameter of the coarse sand ranges from 2.36 to 4 mm, the diameter of the gravel ranges from 10 to 20 mm, and the retarder is white sugar;

[0047] The construction method of printed decorative high-quality concrete includes the following steps:

[0048] S1. Material preparation: During the material preparation stage, the following materials must be accurately weighed in proportion: cement, reinforcing agent, defoaming powder, water reducing agent, water, retarder, sand, gravel and admixture. After all materials are prepared, they should be placed in the designated area in order to ensure that the proportions are correct before construction.

[0049] S2. Mixing cement slurry: First, corresponding amounts of cement and reinforcing agent are mixed as predetermined, added into a mixer at a suitable temperature, then defoaming powder and admixture are added, and finally, water and retarder are pre-mixed, and then mixed with water reducing agent to obtain composite solution A, and then the composite solution A is slowly poured into the mixer and stirred to obtain uniform cement slurry with good fluidity without segregation;

[0050] S3, mixing cement mortar: after the mixing in step S2 is completed, the temperature of the mixer is maintained, and then extra-fine sand is first added and then coarse sand is added to make cement mortar;

[0051] S4, mixing to concrete: maintaining the mixer speed in step S3, adding gravel to the cement mortar and mixing to form slightly slurry concrete;

[0052] S5. Concrete pouring: Pour the mixed concrete evenly into the mold, use high-frequency vibrating equipment to compact the concrete, and quickly level it after compaction to ensure that the concrete surface is aligned with the predetermined elevation;

[0053] S6, printing and curing concrete: After the concrete is poured, cover the printing mold, wet cotton cloth, and plastic film for moisturizing and curing, keep it airtight and the wet cotton cloth moist, and cure for 11 days, during which a release agent is pre-coated when covering the printing mold;

[0054] In step S2, the mixed water, retarder and water reducer are added into the mixer, and the stirring speed is 40r / min, and the stirring time is 4min; in step S3, when adding extra fine sand and coarse sand, the mixer speed is 50r / min, and the stirring time is 7min; in step S5, the vibration frequency of the high-frequency vibration equipment is 4000 times / min, and each position needs to be vibrated for 8S; in step S6, the wet cotton cloth needs to be replenished with water in time to keep it moist, and the curing temperature needs to be maintained above 8°C.

[0055] Embodiment 3, in combination with Figure 1 , printed decorative high-quality concrete and its construction method:

[0056] Printed decorative high-quality concrete, including the following materials and weight parts: 500 parts of cement, 25 parts of reinforcing agent, 0.5 parts of defoaming powder, 20 parts of water reducing agent, 153 parts of water, 0.5 parts of retarder, 263 parts of extra fine sand, 464 parts of coarse sand, 1083 parts of gravel, and 0.5 parts of admixture;

[0057] The water reducer adopts a polycarboxylic acid water reducer, which is specifically copolymerized by polyether monomer, acrylic acid, ammonium persulfate, thioglycolic acid, maleic anhydride, phosphate ester, etc.;

[0058] The admixture is a shrinkage reducing agent, which is specifically composed of polypropylene glycol, ethylene oxide methanol additives, ethylene oxide propylene oxide block polymers, ethylene oxide propylene oxide random polymers, ethylene oxide cycloalkyl additives, ethylene oxide methyl additives, ethylene oxide phenyl additives, ethylene oxide propylene oxide block polymer methyl phenyl additives, ethylene oxide methanol added at both ends, and ethylene oxide dimethylamine additives;

[0059] The diameter of super fine sand ranges from 0.075 to 0.15 mm, 0.1 to 0.3 mm, each accounting for half, the diameter of coarse sand is 4 to 5 mm, and the diameter of gravel is 16 to 31.5 mm;

[0060] The construction method of printed decorative high-quality concrete includes the following steps:

[0061] S1. Material preparation: During the material preparation stage, the following materials must be accurately weighed in proportion: cement, reinforcing agent, defoaming powder, water reducing agent, water, retarder, sand, gravel and admixture. After all materials are prepared, they should be placed in the designated area in order to ensure that the proportions are correct before construction.

[0062] S2. Mixing cement slurry: First, corresponding amounts of cement and reinforcing agent are mixed as predetermined, added into a mixer at a suitable temperature, then defoaming powder and admixture are added, and finally, water and retarder are pre-mixed, and then mixed with water reducing agent to obtain composite solution A, and then the composite solution A is slowly poured into the mixer and stirred to obtain uniform cement slurry with good fluidity without segregation;

[0063] S3, mixing cement mortar: after the mixing in step S2 is completed, the temperature of the mixer is maintained, and then extra-fine sand is first added and then coarse sand is added to make cement mortar;

[0064] S4, mixing to concrete: maintaining the mixer speed in step S3, adding gravel to the cement mortar and mixing to form slightly slurry concrete;

[0065] S5. Concrete pouring: Pour the mixed concrete evenly into the mold, use high-frequency vibrating equipment to compact the concrete, and quickly level it after compaction to ensure that the concrete surface is aligned with the predetermined elevation;

[0066] S6, printing and curing concrete: After the concrete is poured, cover the printing mold, wet cotton cloth, and plastic film for moisturizing and curing, keep it airtight and the wet cotton cloth moist, and cure for 14 days, during which a release agent is pre-coated when covering the printing mold;

[0067] In step S2, the mixed water, retarder and water reducer are added into the mixer, and the stirring speed is 50r / min, and the stirring time is 5min; in step S3, when adding extra fine sand and coarse sand, the mixer speed is 60r / min, and the stirring time is 8min; in step S5, the vibration frequency of the high-frequency vibration equipment is 5000 times / min, and each position needs to be vibrated for 10S; in step S6, the wet cotton cloth needs to be replenished with water in time to keep it moist, and the curing temperature needs to be maintained above 8°C.

[0068] The present invention adopts scientific and reasonable material ratios and construction steps, and the coordinated use of reinforcing agent, defoaming powder, retarder and water reducing agent, so that the consistency, fluidity, uniformity and durability of concrete are significantly improved, and the vibration frequency and time are optimized to ensure that the surface is smooth and free of bubbles. The overall operation is simple, the maintenance period is short, and the construction efficiency is high.

[0069] The present invention and its implementation methods are described above. Such description is not restrictive. If a person skilled in the art is inspired by it and creatively designs implementation methods and embodiments similar to the technical solution without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. Printed decorative high-quality concrete, characterized by: It includes the following materials and their weight portions: 400 to 500 parts of cement, 20 to 25 parts of reinforcing agent, 0.4 to 0.5 parts of defoaming powder, 12 to 21 parts of water reducing agent, 115 to 154 parts of water, 0.4 to 0.5 parts of retarder, 209 to 263 parts of extra fine sand, 371 to 465 parts of coarse sand, 866 to 1083 parts of gravel, and 0.3 to 0.5 parts of admixture.

2. The printed decorative high-quality concrete according to claim 1, characterized in that: The water reducing agent is a polycarboxylic acid water reducing agent.

3. The printed decorative high-quality concrete according to claim 1, characterized in that: The additive is a shrinkage reducing agent, which is specifically composed of polypropylene glycol, ethylene oxide methanol additives, ethylene oxide propylene oxide block polymers, ethylene oxide propylene oxide random polymers, ethylene oxide cycloalkyl additives, ethylene oxide methyl additives, ethylene oxide phenyl additives, ethylene oxide propylene oxide block polymer methyl phenyl additives, ethylene oxide methanol added at both ends, and ethylene oxide dimethylamine additives.

4. The printed decorative high-quality concrete according to claim 1, characterized in that: The diameter of the ultra-fine sand ranges from 0.075 mm to 0.3 mm, the diameter of the coarse sand ranges from 0.8 mm to 5.0 mm, the diameter of the gravel ranges from 3 mm to 31.5 mm, and the retarder is a sugar retarder.

5. A method for constructing printed decorative high-quality concrete, according to the printed decorative high-quality concrete according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Material preparation: During the material preparation stage, the following materials must be accurately weighed in proportion: cement, reinforcing agent, defoaming powder, water reducing agent, water, retarder, extra fine sand, coarse sand, gravel and admixture. After all materials are prepared, they should be placed in the designated area in order to ensure that the proportions are correct before construction. S2. Mixing cement slurry: First, corresponding amounts of cement and reinforcing agent are mixed as predetermined, added into a mixer at a suitable temperature, then defoaming powder and admixture are added, and finally, water and retarder are pre-mixed, and then mixed with water reducing agent to obtain composite solution A, and then the composite solution A is slowly poured into the mixer and stirred to obtain uniform cement slurry with good fluidity without segregation; S3, mixing cement mortar: after the mixing in step S2 is completed, the temperature of the mixer is maintained, and then extra-fine sand is first added and then coarse sand is added to make cement mortar; S4, mixing to concrete: maintaining the mixer speed in step S3, adding gravel to the cement mortar and mixing to form a multi-slurry concrete; S5. Concrete pouring: Pour the mixed concrete evenly into the mold, use high-frequency vibrating equipment to compact the concrete, and quickly level it after compaction to ensure that the concrete surface is aligned with the predetermined elevation; S6. Printing and curing concrete: After pouring the concrete, cover it with printing molds, wet cotton cloth and plastic film for moisturizing and curing. Keep it airtight and the wet cotton cloth moist for 7 to 14 days.

6. The method for constructing printed decorative high-quality concrete according to claim 5, characterized in that: In the step S2, the mixed water, retarder and water reducing agent are added into a mixer, and the speed of stirring is 30 r / min to 50 r / min, and the stirring time is 3 min to 5 min.

7. The method for constructing printed decorative high-quality concrete according to claim 5, characterized in that: In the step S3, when adding the extra fine sand and the coarse sand, the rotation speed of the mixer is 40 r / min to 60 r / min, and the stirring time is 5 min to 8 min.

8. The method for constructing printed decorative high-quality concrete according to claim 5, characterized in that: In the step S5, the vibration frequency of the high-frequency vibration equipment is 3000 times / min to 5000 times / min, and each position needs to be vibrated for 5S to 10S.

9. The method for constructing printed decorative high-quality concrete according to claim 5, characterized in that: In the step S6, the wet cotton cloth needs to be replenished with water in time to keep it moist, and the curing temperature needs to be maintained above 8°C.

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