Colored concrete ground construction method and system and construction machinery

Abstract

The invention relates to the field of road construction and maintenance, and discloses a colored concrete floor construction method, system and machine.The colored concrete floor construction method comprises the steps that S1, a coloring agent is prepared, specifically, waterborne polyurethane and nano titanium dioxide are mixed; s2, in a field preparation stage, a construction machine is adopted to comprehensively clean the to-be-constructed area; s3, a coloring agent solution is sprayed, specifically, the coloring agent solution is evenly sprayed to the construction area through a construction machine; s4, concrete paving is conducted, specifically, concrete is paved in the construction area through a construction machine; and S5, concrete curing and surface treatment are conducted, specifically, laitance on the surface of the road surface is cleaned through a high-pressure water cleaning machine. The ground color of the nano titanium dioxide and the nano composite colorant powder in the nano composite colorant powder is brighter, diversified color requirements can be met, the attractiveness of the ground is improved, the nano particles are uniformly dispersed in a system due to the small-size effect of the nano particles, the phenomenon of uneven color is avoided, and the color consistency of the road surface is ensured.

Description

Technical Field

[0001] The invention relates to the field of road construction and maintenance, and in particular to a colored concrete floor construction method, system and construction machinery. Background Art

[0002] The construction method of colored concrete floor usually includes the following steps: foundation treatment: clean the ground to ensure it is flat and solid; mix design: prepare the raw materials of colored concrete according to demand; pouring: pour the colored concrete evenly onto the base surface; vibration and leveling: use vibrators and paving machinery to level the concrete surface; troweling: use a trowel to further level the surface; maintenance: ensure that the concrete is fully cured and kept moist, which usually takes more than 7 days.

[0003] While pursuing road strength and durability, traditional pavement construction technology often ignores the need for color diversity. Common colored concrete pavement construction is usually achieved by adding dyes or paint to cover the surface before the concrete hardens. This method causes the color to fade easily and cannot meet the need to maintain the beauty of the road in the long term. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a colored concrete floor construction method, system and construction machinery to solve the problem that the color of traditional road construction technology is easy to fade and cannot meet the demand of maintaining the beauty of the road surface for a long time.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a colored concrete floor construction method, system and construction machinery, including: S1, colorant preparation, mixing waterborne polyurethane and nano titanium dioxide; S2. During the site preparation phase, use construction machinery to conduct a comprehensive cleanup of the construction area; S3, spraying the colorant solution, using a construction machine to evenly spray the colorant solution on the construction area; S4, concrete paving, paving concrete in the construction area by construction machinery; S5. Concrete curing and surface treatment: Use a high-pressure water cleaner to clean the slurry on the road surface.

[0006] Preferably, the preparation of the colorant in S1 comprises the following steps: S1. Raw material preparation: nano titanium dioxide with a particle size of 20-50 nanometers, water-based polyurethane as a binder with a solid content of 30%-40%, sodium polyacrylate as a dispersant with an amount of 0.5%-1% of the mass of the nanoparticles, γ-aminopropyl triethoxysilane and anhydrous ethanol, and a defoaming agent; S2. Surface modification of nanoparticles: γ-aminopropyltriethoxysilane and anhydrous ethanol are prepared into a silane coupling agent solution with a mass fraction of 2%-3%, and nano-titanium dioxide is added to the silane coupling agent solution. The mass ratio of nanoparticles to silane coupling agent is 10:1-15:1. The mixture is stirred at a temperature of 50-60°C and a speed of 200-300 rpm for 3-4 hours. After the reaction is completed, the mixture is centrifuged and washed with anhydrous ethanol for multiple times to remove unreacted silane coupling agent, and then dried in a vacuum drying oven at 60-70°C for 12-16 hours to obtain surface-modified nanoparticles. S3, composite emulsion preparation, the surface modified nanoparticles and aqueous polyurethane emulsion according to the ratio of 1: 5-1: 8 are added to a high-speed stirrer, and a sodium polyacrylate dispersant solution is added at the same time, and the stirring speed is set to 1200-1500 rpm, and the stirring time is 45-60 minutes, so that the nanoparticles are uniformly dispersed in the aqueous polyurethane emulsion, and during the stirring process, an appropriate amount of defoamer is slowly added in an amount of 0.1%-0.3% of the total volume of the emulsion to eliminate bubbles generated by stirring, ensure the uniformity and stability of the composite emulsion, and finally form a nano composite emulsion; S4, post-treatment, the prepared nano-composite emulsion is transported to a spray dryer through a peristaltic pump, the inlet temperature of the spray dryer is controlled at 130-150°C, and the outlet temperature is controlled at 70-80°C. The emulsion is atomized into tiny droplets through a nozzle, and is quickly dried under the action of hot air to form a nano-composite colorant powder. The dried nano-composite colorant powder is collected through a cyclone separator and a bag dust collector, and the collected powder is put into a sealed bag or a sealed container.

[0007] Preferably, the colored concrete floor construction system includes a construction machinery, which includes a chassis, a rotating wheel is arranged inside the chassis, a cleaning module is fixedly connected to the right upper surface of the chassis, a colorant spraying module is fixedly connected to the middle of the chassis, and a concrete hopper, a spiral distributor and a scraper conveyor are fixedly connected to the left upper surface of the chassis.

[0008] Preferably, the cleaning module includes a fixed block 1, which is fixedly connected to the right upper surface of the chassis, a fixed block 2 is fixedly connected to the right outer wall of the fixed block 1, an electric push rod is fixedly connected to the lower surface of the fixed block 2, the output end of the electric push rod is connected to a connecting plate, the lower surface of the connecting plate is fixedly connected to a motor 1, and the output end of the motor 1 is connected to a cleaning brush head.

[0009] Preferably, the colorant spraying module includes a liquid storage tank, which is fixedly connected to the upper surface of the chassis, the liquid storage tank and the pump body are connected by a hose, the interior of the pump body is fixedly connected to a delivery pipe, the left outer wall of the delivery pipe is fixedly connected to a rotating box, and the outer wall of the rotating box is fixedly connected to a spray head.

[0010] Preferably, the colorant spraying module also includes a base plate, which is fixedly connected to the upper surface of the chassis, and the upper surface of the base plate is fixedly connected with a fixing plate and a fixing seat, and the upper surface of the fixing plate is fixedly connected with motor 2, and the output end of motor 2 is connected with gear 1, and the tooth end of gear 1 is meshingly connected with gear 2, and the interior of gear 2 is fixedly connected with a rotating column, and the lower outer wall of the rotating column is rotatably connected to the interior of the base plate, and the top of the rotating column is fixedly connected with a turntable, and the outer wall of the turntable is rotatably connected to the interior of the fixing seat, and the upper surface of the turntable is provided with robot arm 1, and the outer wall of the robot arm 1 is provided with robot arm 2, and the outer wall of the rotating box is provided inside the robot arm 2.

[0011] Preferably, the spiral feeder includes a fixed groove, the lower surface of the fixed groove is fixedly connected to the middle upper surface of the chassis, the right upper surface of the fixed groove is fixedly connected to motor three, the output end of motor three is connected to an auger, and the outer wall of the auger is rotatably connected to the inside of the fixed groove.

[0012] Preferably, the scraper conveyor comprises a conveyor belt, the conveyor belt is fixedly connected to the left upper surface of the chassis, and the scraper body is fixedly connected inside the conveyor belt.

[0013] Preferably, a control module is provided inside the chassis, and the control module is used to realize the connection between power transmission and control signals.

[0014] Preferably, dust collecting devices are provided inside both sides of the connecting plate.

[0015] Working principle: Pour the spray solution into the liquid storage tank, start the electric push rod, the electric push rod will drive the connecting plate to move up and down, the up and down movement of the connecting plate will drive motor 1 and the cleaning brush head to move up and down, while moving, start motor 1, motor 1 will drive the cleaning brush head to rotate, the cleaning brush head will clean the floor, start the pump body, the pump body will extract the liquid inside the liquid storage tank, and then spray the liquid through the cooperation of the rotating box and the nozzle, start motor 2, the rotation of motor 2 will drive gear 1 to rotate, the rotation of gear 1 will drive gear 2 to rotate, the rotation of gear 2 will drive the rotating column The turntable rotates, thereby driving the robot arm 1 and the robot arm 2 to rotate. Motors are arranged outside the robot arm 2 and the robot arm 1. The motors are used to adjust the angles of the robot arm 1 and the robot arm 2. Finally, the robot arm 2 drives the rotating box and the nozzle to adjust the angle to spray the spray solution on the ground. After pouring cement into the concrete hopper, the cement will flow into the fixed groove through the concrete hopper, and then the motor 3 will be started. The motor 3 will drive the auger to rotate, and the auger will transfer the cement to the upper surface of the scraper conveyor. The cement will fall naturally due to gravity to achieve the effect of uniform paving.

[0016] The present invention provides a colored concrete floor construction method, system and construction machinery, which have the following beneficial effects: 1. The nano titanium dioxide in the nano composite colorant powder of the present invention makes the ground color brighter, can meet the diverse color requirements, and improve the aesthetics of the ground. Moreover, the small size effect of the nanoparticles makes it evenly dispersed in the system, avoiding the phenomenon of uneven color and ensuring the color consistency of the road surface.

[0017] 2. The present invention significantly improves construction efficiency and reduces labor costs through the collaborative operation of the automated construction management system and construction machinery, and is suitable for large-scale rapid deployment.

[0018] 3. The overall solution of the present invention takes into account both aesthetic value and practicality, and promotes the development of urban construction in a more eco-friendly and visually pleasing direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the construction machinery of the present invention; Figure 2 It is a partial structural schematic diagram of the second fixing block of the present invention; Figure 3 It is a schematic diagram of the local structure of the delivery pipeline of the present invention; Figure 4 It is a schematic diagram of the local structure of the rotating column of the present invention; Figure 5 It is a schematic diagram of the local structure of the rotating box of the present invention; Figure 6It is a partial structural schematic diagram of the scraper conveyor of the present invention; Figure 7 It is a schematic diagram of the partial structure of the scraper body of the present invention; Figure 8 It is a schematic diagram of the construction method of the present invention; Fig. 9 The figure is a schematic diagram of the preparation process of the colorant of the present invention.

[0020] Among them, 1. chassis; 2. rotating wheel; 3. cleaning module; 301. fixed block one; 302. fixed block two; 303. electric push rod; 304. connecting plate; 305. motor one; 306. cleaning brush head; 4. colorant spraying module; 401. liquid storage tank; 402. pump body; 403. conveying pipeline; 404. rotating box; 405. nozzle; 406. bottom plate; 407. fixed plate; 408. motor two; 409. gear one; 410. gear two; 411. rotating column; 412. turntable; 413. fixed seat; 414. mechanical arm one; 415. mechanical arm two; 5. concrete hopper; 6. spiral distributor; 601. fixed trough; 602. motor three; 603. auger; 7. scraper conveyor; 701. conveyor belt; 702. scraper body. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only 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.

[0022] Please see attached Figure 8 The embodiment of the present invention provides a colored concrete floor construction method, comprising: S1, colorant preparation, mixing waterborne polyurethane and nano titanium dioxide; S2. During the site preparation phase, use construction machinery to conduct a comprehensive cleanup of the construction area; S3, spraying the colorant solution, using a construction machine to evenly spray the colorant solution on the construction area; S4, concrete paving, paving concrete in the construction area by construction machinery; S5. Concrete curing and surface treatment: Use a high-pressure water cleaner to clean the slurry on the road surface.

[0023] Specifically, S1, colorant preparation, select nano titanium dioxide with a particle size in the range of 20-50 nanometers. Nano titanium dioxide in this size range has good photocatalytic activity and dispersibility. Aqueous polyurethane with a solid content of 30%-40% is used as a key binder to uniformly disperse the nanoparticles in the system. Sodium polyacrylate is selected as a dispersant, and its amount is precisely controlled at 0.5%-1% of the mass of the nanoparticles. In addition, γ-aminopropyltriethoxysilane, anhydrous ethanol and a defoaming agent are also required. In actual operation, γ-aminopropyltriethoxysilane and anhydrous ethanol are first prepared into a silane coupling agent solution with a mass fraction of 2%-3%, and nano titanium dioxide is added thereto. The mass ratio of nanoparticles to silane coupling agent is maintained at 10:1-15:1. The reaction is stirred at 200-300 rpm at 50-60°C for 3-4 hours to modify the surface of the nano titanium dioxide to enhance its compatibility with aqueous polyurethane. The reaction is completed. After that, the unreacted silane coupling agent is removed by centrifugal separation and repeated washing with anhydrous ethanol, and then dried in a vacuum drying oven at 60-70°C for 12-16 hours to obtain surface-modified nanoparticles. After that, the surface-modified nanoparticles and the aqueous polyurethane emulsion are added to a high-speed mixer at a ratio of 1:5-1:8, and a sodium polyacrylate dispersant solution is added at the same time. The stirring speed is set to 1200-1500 rpm, and the stirring is continued for 45-60 minutes to uniformly disperse the nanoparticles in the aqueous polyurethane emulsion. During the stirring process, 0.1%-0.3% of the total volume of the emulsion is slowly added with a defoamer to eliminate bubbles, and finally a uniform and stable nano-composite emulsion is formed. Finally, the nano-composite emulsion is transported to a spray dryer through a peristaltic pump, and the inlet temperature is controlled at 130-150°C and the outlet temperature is controlled at 70-80°C. The emulsion is atomized and dried by a nozzle to form a nano-composite colorant powder, which is collected by a cyclone separator and a bag dust collector and put into a sealed bag or a sealed container for standby use.

[0024] Please see attached Fig. 9The preparation of the colorant in S1 includes the following steps: S1, raw material preparation, selecting nano titanium dioxide with a particle size of 20-50 nanometers, using water-based polyurethane as a binder with a solid content of 30%-40%, using sodium polyacrylate as a dispersant with an amount of 0.5%-1% of the mass of the nanoparticles, γ-aminopropyltriethoxysilane and anhydrous ethanol, and a defoaming agent; S2, nanoparticle surface modification, preparing γ-aminopropyltriethoxysilane and anhydrous ethanol into a silane couple with a mass fraction of 2%-3%. The nano-titanium dioxide is added to the silane coupling agent solution, the mass ratio of the nano-particles to the silane coupling agent is 10:1-15:1, and the reaction is stirred at a temperature of 50-60°C and a speed of 200-300 rpm for 3-4 hours. After the reaction is completed, the unreacted silane coupling agent is removed by centrifugation, and then the unreacted silane coupling agent is removed by washing with anhydrous ethanol for multiple times, and then dried in a vacuum drying oven at 60-70°C for 12-16 hours to obtain surface-modified nano-particles; S3, preparation of composite emulsion, adding the surface The surface-modified nanoparticles and the aqueous polyurethane emulsion are added to a high-speed mixer in a ratio of 1:5-1:8, and a sodium polyacrylate dispersant solution is added at the same time. The stirring speed is set to 1200-1500 rpm for 45-60 minutes to uniformly disperse the nanoparticles in the aqueous polyurethane emulsion. During the stirring process, an appropriate amount of defoamer is slowly added in an amount of 0.1%-0.3% of the total volume of the emulsion to eliminate bubbles generated by stirring, ensure the uniformity and stability of the composite emulsion, and finally form a nano-composite emulsion; S4, post-treatment, the prepared nano-composite emulsion is transported to a spray dryer through a peristaltic pump, the inlet temperature of the spray dryer is controlled at 130-150° C., and the outlet temperature is controlled at 70-80° C. The emulsion is atomized into tiny droplets through a nozzle, and is rapidly dried under the action of hot air to form a nano-composite colorant powder. The dried nano-composite colorant powder is collected by a cyclone separator and a bag dust collector, and the collected powder is put into a sealed bag or a sealed container.

[0025] Specifically, in the raw material preparation stage of the colorant in S1, nano titanium dioxide with a particle size of 20-50 nanometers is selected because it can exert unique performance advantages within this particle size range. Waterborne polyurethane is used as a binder, and its 30%-40% solid content can effectively ensure the dispersion and bonding effect of the nanoparticles. Sodium polyacrylate is used as a dispersant, and its content is precisely controlled at 0.5%-1% of the mass of the nanoparticles to ensure uniform dispersion of the nanoparticles. At the same time, γ-aminopropyltriethoxysilane and anhydrous ethanol are formulated into a silane coupling agent solution with a specific mass fraction, and nano titanium dioxide is added to react under suitable temperature, stirring speed and time conditions to enhance the compatibility of the nanoparticles with the waterborne polyurethane. When preparing the composite emulsion, the surface-modified nanoparticles are mixed with the aqueous polyurethane emulsion in strict proportion, stirred at high speed and dispersants and defoamers are added to obtain a uniform and stable nano-composite emulsion. In the final post-processing step, a peristaltic pump is used to transport the emulsion to a spray dryer, and the inlet and outlet temperatures are controlled to atomize and dry the emulsion into powder. The powder is collected and properly stored through a cyclone separator and a bag dust collector to provide high-quality colorants for subsequent colored concrete floor construction.

[0026] Please see attached Figure 1 The colored concrete floor construction system includes a construction machine, which includes a chassis 1. A rotating wheel 2 is arranged inside the chassis 1. A cleaning module 3 is fixedly connected to the upper right surface of the chassis 1. A colorant spraying module 4 is fixedly connected to the middle of the chassis 1. A concrete hopper 5, a spiral distributor 6 and a scraper conveyor 7 are fixedly connected to the upper left surface of the chassis 1.

[0027] Specifically, the cleaning module 3 can use high-precision measuring instruments and leveling equipment, such as levels, graders, etc., to accurately measure and level the construction area to ensure that the ground flatness error is controlled within a very small range, laying a good foundation for subsequent construction, and setting obvious warning signs and fences around the construction area to prevent irrelevant personnel and vehicles from entering the construction area, ensuring the safety and smooth progress of the construction. In the colorant spraying module 4, before pouring concrete, the colorant solution is evenly sprayed on the construction area according to the pre-set spraying path and speed to ensure comprehensive coverage and uniform thickness. A special person is arranged to monitor the spraying process in real time to promptly discover and solve possible problems such as uneven spraying and missed spraying. The concrete hopper 5, spiral distributor 6 and scraper conveyor 7 cooperate with each other to evenly distribute the concrete inside the construction area.

[0028] Please see attached Figure 2The cleaning module 3 includes a fixed block 301, which is fixedly connected to the upper right surface of the chassis 1, and a fixed block 2 302 is fixedly connected to the right outer wall of the fixed block 301, and an electric push rod 303 is fixedly connected to the lower surface of the fixed block 2 302, and the output end of the electric push rod 303 is connected to a connecting plate 304, and the lower surface of the connecting plate 304 is fixedly connected to a motor 1 305, and the output end of the motor 1 305 is connected to a cleaning brush head 306.

[0029] Specifically, by starting the electric push rod 303, the electric push rod 303 will drive the connecting plate 304 to move up and down, and the up and down movement of the connecting plate 304 will drive the motor 1 305 and the cleaning brush head 306 to move up and down. While moving, start the motor 1 305, the motor 1 305 will drive the cleaning brush head 306 to rotate, and the cleaning brush head 306 will clean the floor.

[0030] Please see attached Figure 3 -Attached Figure 5 The colorant spraying module 4 includes a liquid storage tank 401, which is fixedly connected to the upper surface of the chassis 1, and the liquid storage tank 401 and the pump body 402 are connected by a hose. The interior of the pump body 402 is fixedly connected with a delivery pipeline 403, and the left outer wall of the delivery pipeline 403 is fixedly connected with a rotating box 404, and the outer wall of the rotating box 404 is fixedly connected with a nozzle 405; the colorant spraying module 4 also includes a bottom plate 406, which is fixedly connected to the upper surface of the chassis 1, and the upper surface of the bottom plate 406 is fixedly connected with a fixing plate 407 and a fixing seat 413, and the upper surface of the fixing plate 407 is fixedly connected with an electric Machine 2 408, the output end of motor 2 408 is connected to gear 1 409, the tooth end of gear 1 409 is meshingly connected to gear 2 410, the interior of gear 2 410 is fixedly connected to a rotating column 411, the lower outer wall of the rotating column 411 is rotatably connected to the interior of the bottom plate 406, the top of the rotating column 411 is fixedly connected to a turntable 412, the outer wall of the turntable 412 is rotatably connected to the interior of the fixed seat 413, the upper surface of the turntable 412 is provided with a robot arm 1 414, the outer wall of the robot arm 1 414 is provided with a robot arm 2 415, and the outer wall of the rotating box 404 is provided inside the robot arm 2 415.

[0031] Specifically, first, the interior of the liquid storage tank 401 is filled with the spray solution, and the pump body 402 is started. The pump body 402 will draw the liquid inside the liquid storage tank 401, and then the liquid will be sprayed out through the cooperation of the rotating box 404 and the nozzle 405, and the motor 2 408 is started. The rotation of the motor 2 408 will drive the gear 1 409 to rotate, and the rotation of the gear 1 409 will drive the gear 2 410 to rotate. The rotation of the gear 2 410 will drive the rotating column 411 and the turntable 412 to rotate, and then drive the robot arm 1 414 and the robot arm 2 415 to rotate. The outside of the robot arm 2 415 and the robot arm 1 414 is provided with a motor, and the motor is used to drive the robot arm 1 414 and the robot arm 2 415 to adjust the angle. Finally, the robot arm 2 415 drives the rotating box 404 and the nozzle 405 to adjust the angle.

[0032] Please see attached Figure 6 and attached Figure 7 The spiral distributor 6 includes a fixed groove 601, the lower surface of the fixed groove 601 is fixedly connected to the middle upper surface of the chassis 1, the right upper surface of the fixed groove 601 is fixedly connected to a motor three 602, the output end of the motor three 602 is connected to an auger 603, and the outer wall of the auger 603 is rotatably connected to the inside of the fixed groove 601.

[0033] Specifically, cement will flow into the interior of the fixed groove 601 through the concrete hopper 5. The lower surface of the concrete hopper 5 is provided with holes. Then, by starting the motor 3 602, the motor 3 602 will drive the auger 603 to rotate, and the auger 603 will transfer the cement to the upper surface of the scraper conveyor 7.

[0034] Please see attached Figure 7 The scraper conveyor 7 includes a conveyor belt 701 , which is fixedly connected to the left upper surface of the chassis 1 , and a scraper body 702 is fixedly connected inside the conveyor belt 701 .

[0035] Specifically, by starting the scraper conveyor 7, the conveyor belt 701 will rotate accordingly, and the rotation of the conveyor belt 701 will drive the scraper body 702 to rotate. The rotation of the scraper body 702 will evenly distribute the cement. When the cement reaches the edge of the conveyor belt 701, it will naturally fall due to gravity, achieving a uniform paving effect.

[0036] Please see attached Figure 1 and attached Figure 2 A control module is arranged inside the chassis 1, and the control module is used to realize the connection between power transmission and control signal; dust collection devices are arranged inside both sides of the connecting plate 304.

[0037] Specifically, the dust suction device is used to clean the dust on the ground, and the control module is used for quick connection to realize power transmission and control signal docking.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A colored concrete floor construction method, characterized in that: include: S1, colorant preparation, mixing waterborne polyurethane and nano titanium dioxide; S2. During the site preparation phase, use construction machinery to conduct a comprehensive cleanup of the construction area; S3, spraying the colorant solution, using a construction machine to evenly spray the colorant solution on the construction area; S4, concrete paving, paving concrete in the construction area by construction machinery; S5. Concrete curing and surface treatment: Use a high-pressure water cleaner to clean the slurry on the road surface.

2. The colored concrete floor construction method according to claim 1, characterized in that: The colorant preparation in S1 comprises the following steps: S1. Raw material preparation: nano titanium dioxide with a particle size of 20-50 nanometers, water-based polyurethane as a binder with a solid content of 30%-40%, sodium polyacrylate as a dispersant with an amount of 0.5%-1% of the mass of the nanoparticles, γ-aminopropyl triethoxysilane and anhydrous ethanol, and a defoaming agent; S2. Surface modification of nanoparticles: γ-aminopropyltriethoxysilane and anhydrous ethanol are prepared into a silane coupling agent solution with a mass fraction of 2%-3%, and nano-titanium dioxide is added to the silane coupling agent solution. The mass ratio of nanoparticles to silane coupling agent is 10:1-15:

1. The mixture is stirred at a temperature of 50-60°C and a speed of 200-300 rpm for 3-4 hours. After the reaction is completed, the mixture is centrifuged and washed with anhydrous ethanol for multiple times to remove unreacted silane coupling agent, and then dried in a vacuum drying oven at 60-70°C for 12-16 hours to obtain surface-modified nanoparticles. S3, composite emulsion preparation, the surface modified nanoparticles and aqueous polyurethane emulsion according to the ratio of 1: 5-1: 8 are added to a high-speed stirrer, and a sodium polyacrylate dispersant solution is added at the same time, and the stirring speed is set to 1200-1500 rpm, and the stirring time is 45-60 minutes, so that the nanoparticles are uniformly dispersed in the aqueous polyurethane emulsion, and during the stirring process, an appropriate amount of defoamer is slowly added in an amount of 0.1%-0.3% of the total volume of the emulsion to eliminate bubbles generated by stirring, ensure the uniformity and stability of the composite emulsion, and finally form a nano composite emulsion; S4, post-treatment, the prepared nano-composite emulsion is transported to a spray dryer through a peristaltic pump, the inlet temperature of the spray dryer is controlled at 130-150°C, and the outlet temperature is controlled at 70-80°C. The emulsion is atomized into tiny droplets through a nozzle, and is quickly dried under the action of hot air to form a nano-composite colorant powder. The dried nano-composite colorant powder is collected through a cyclone separator and a bag dust collector, and the collected powder is put into a sealed bag or a sealed container.

3. Colored concrete floor construction system, characterized by: The colored concrete floor construction method as described in claim 1 comprises a construction machine, wherein the construction machine comprises a chassis (1), a rotating wheel (2) is arranged inside the chassis (1), a cleaning module (3) is fixedly connected to the right upper surface of the chassis (1), a colorant spraying module (4) is fixedly connected to the middle of the chassis (1), and a concrete hopper (5), a spiral distributor (6) and a scraper conveyor (7) are fixedly connected to the left upper surface of the chassis (1).

4. The colored concrete floor construction system according to claim 3, characterized in that: The cleaning module (3) comprises a fixing block 1 (301), wherein the fixing block 1 (301) is fixedly connected to the upper right surface of the chassis (1), a fixing block 2 (302) is fixedly connected to the outer wall of the right side of the fixing block 1 (301), an electric push rod (303) is fixedly connected to the lower surface of the fixing block 2 (302), an output end of the electric push rod (303) is connected to a connecting plate (304), a motor 1 (305) is fixedly connected to the lower surface of the connecting plate (304), and an output end of the motor 1 (305) is connected to a cleaning brush head (306).

5. The colored concrete floor construction system according to claim 3, characterized in that: The colorant spraying module (4) comprises a liquid storage tank (401), the liquid storage tank (401) is fixedly connected to the upper surface of the chassis (1), the liquid storage tank (401) and the pump body (402) are connected via a hose, a delivery pipe (403) is fixedly connected to the interior of the pump body (402), a rotating box (404) is fixedly connected to the left outer wall of the delivery pipe (403), and a spray head (405) is fixedly connected to the outer wall of the rotating box (404).

6. The colored concrete floor construction system according to claim 5, characterized in that: The colorant spraying module (4) further comprises a bottom plate (406), wherein the bottom plate (406) is fixedly connected to the upper surface of the chassis (1), wherein the upper surface of the bottom plate (406) is fixedly connected to a fixing plate (407) and a fixing seat (413), wherein the upper surface of the fixing plate (407) is fixedly connected to a second motor (408), wherein the output end of the second motor (408) is connected to a first gear (409), wherein the tooth end of the first gear (409) is meshingly connected to a second gear (410), wherein the internal fixing member of the second gear (410) is fixedly connected to the second gear (410). A rotating column (411) is connected, the lower outer wall of the rotating column (411) is rotatably connected to the inside of the bottom plate (406), the top of the rotating column (411) is fixedly connected to a turntable (412), the outer wall of the turntable (412) is rotatably connected to the inside of a fixed seat (413), a mechanical arm 1 (414) is arranged on the upper surface of the turntable (412), a mechanical arm 2 (415) is arranged on the outer wall of the mechanical arm 1 (414), and the outer wall of the rotating box (404) is arranged inside the mechanical arm 2 (415).

7. The colored concrete floor construction system according to claim 3, characterized in that: The spiral distributor (6) comprises a fixed groove (601), the lower surface of the fixed groove (601) is fixedly connected to the middle upper surface of the chassis (1), a motor three (602) is fixedly connected to the right upper surface of the fixed groove (601), an output end of the motor three (602) is connected to an auger (603), and the outer wall of the auger (603) is rotatably connected to the interior of the fixed groove (601).

8. The colored concrete floor construction system according to claim 3, characterized in that: The scraper conveyor (7) comprises a conveyor belt (701), wherein the conveyor belt (701) is fixedly connected to the left upper surface of the chassis (1), and a scraper body (702) is fixedly connected inside the conveyor belt (701).

9. The colored concrete floor construction system according to claim 3, characterized in that: A control module is arranged inside the chassis (1), and the control module is used to achieve power transmission and control signal connection.

10. The colored concrete floor construction system according to claim 4, characterized in that: Dust collecting devices are provided inside the two sides of the connecting plate (304).

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