Super wear-resistant colored polyurethane floor and construction method thereof

Abstract

The invention discloses a super-wear-resistant colored polyurethane floor and a construction method thereof, and belongs to the technical field of constructional engineering, the super-wear-resistant colored polyurethane floor comprises a super-wear-resistant polyurethane overlay, a surface coating, a middle coating, a permeable bottom layer and a colored steel sand tempered floor from top to bottom; the super wear-resistant polyurethane finishing coat adopts a colored polyurethane sealing agent; the surface coating is a self-leveling coating; the middle coating is a mortar middle coating; the permeation bottom layer adopts a multifunctional interface agent; the colored steel sand tempered floor structure is characterized in that a layer I is made of concrete with the thickness of 120-180 mm, cement and sand aggregate mixtures are scattered on the surface of the layer I, the layer I is trowelled while being beaten, and two-way steel bars with the diameter of 6-10 are arranged in the layer I; the layer II is prepared from graded broken stone, the compaction coefficient is larger than or equal to 0.95, and the foundation bearing capacity characteristic value Fak is larger than or equal to 100 kPa; and in the layer III, plain soil is tamped, the bearing capacity of the foundation is larger than or equal to 100 kpa, and when the bearing capacity of the foundation does not meet the requirement, the material A and the material B are adopted for replacement filling and tamping. The coating has the advantages of high wear resistance, impermeability, crack resistance, high construction efficiency, improved adhesive force, attractive appearance, practicability, wide application range and the like.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, specifically to an ultra-wear-resistant colored polyurethane floor and its construction method. Background Technology

[0002] Currently, industrial flooring commonly employs a construction process of applying a concrete base with a coating of ordinary epoxy resin or polyurethane. For example, traditional methods include directly applying an epoxy topcoat after concrete pouring, or using ordinary polyurethane mortar as the surface layer. However, existing technologies have the following problems: ① Insufficient wear resistance: Conventional polyurethane or epoxy coatings are prone to wear under long-term heavy loads and high-frequency friction, resulting in surface peeling and sanding.

[0003] ② Poor impermeability: If the concrete base surface is not treated with impermeability, it is easily eroded by water vapor, which can cause the coating to blister and peel off.

[0004] ③ Complex construction: The connection between multiple processes is not tight, the bonding force between the interface agent and the substrate is insufficient, and delamination is likely to occur.

[0005] ④ Poor aesthetics: Traditional techniques have limited color options and cannot meet the demand for customized patterns.

[0006] Based on this, the present invention designs an ultra-wear-resistant colored polyurethane floor and its construction method to solve the above problems. Summary of the Invention

[0007] To address the aforementioned shortcomings of existing technologies, this invention provides an ultra-wear-resistant colored polyurethane flooring and its construction method, aiming to solve the following problems: First, how to improve the wear resistance and impermeability of industrial floors to adapt to long-term heavy-load environments. Second, how to optimize the flooring construction process, enhance the adhesion between the coating and the substrate, and avoid delamination. Third, how to meet the needs for customized flooring colors and diverse patterns.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: A super wear-resistant colored polyurethane flooring, comprising, from top to bottom, a super wear-resistant polyurethane topcoat, a top coating, a middle coating, a penetrating undercoat, and a colored rigid sand tempered flooring. The ultra-wear-resistant polyurethane cover layer uses a colored polyurethane sealant; The topcoat is a self-flowing flat coating. The intermediate coating is a mortar intermediate coating; A multifunctional interface agent is used to penetrate the underlying layer; Colored steel sand tempered concrete flooring adopts a three-layer structure from top to bottom: I, II, and III. Layer 1: 120~180mm thick concrete, with cement and sand aggregate mixture sprinkled on the surface, smoothed as it is poured, and reinforced with Φ6~Φ10 bidirectional steel bars inside; Layer II: Graded crushed stone, compaction coefficient ≥ 0.95, characteristic value of foundation bearing capacity F ak ≥100kPa; Layer III: Compacted subgrade soil with a bearing capacity ≥100kPa. If the bearing capacity of the foundation does not meet the requirements, AB material shall be used for replacement and compaction to ensure that the bearing capacity of the foundation is ≥100kPa.

[0009] Furthermore, in layer I, a 3mm thick layer of cement and sand aggregate with a mass ratio of 1:1 is sprinkled on the concrete surface. The sand aggregate has a particle size of 2-5mm and is reinforced with bidirectional steel bars @200X200. The sand aggregate is colored steel grit, corundum, or quartz sand.

[0010] Furthermore, in layer II, 280mm thick graded crushed stone is used.

[0011] Furthermore, in layer III, when the foundation bearing capacity does not meet the requirements, 150mm thick AB material is used for replacement and compaction.

[0012] To better achieve the objectives of this invention, this invention also provides a method for constructing ultra-wear-resistant colored polyurethane flooring, comprising the following steps: Step 1: Compact the subgrade soil. After construction, ensure the foundation bearing capacity is ≥100kPa before proceeding to the next step. Step 2: Graded crushed stone construction. After construction, ensure a compaction coefficient ≥ 0.95 and a foundation bearing capacity characteristic value F. ak ≥100kPa; Step 3: Reinforcement binding and concrete pouring construction; Step 4: Sprinkle colored steel grit and finish: Before the concrete initially sets, promptly and evenly sprinkle the cement and colored steel grit mixture onto the concrete surface, and use a single-disc finisher to clean and finish the surface repeatedly in an "S" shape. Step 5, Maintenance: Colored steel sand tempered concrete flooring requires repeated watering for maintenance; Step 6: Grind and cut the joints of the colored steel sand tempered concrete floor. Step 7, Primer Coating Construction: First, clean the surface of the colored steel sand tempered concrete floor; then, use a roller to apply the bonding primer back and forth. The bonding primer uses a multi-functional interface agent, which forms a penetrating underlayer on the surface of the colored steel sand tempered concrete floor after construction. Step 8: Apply the intermediate coating. After application, an intermediate coating will be formed on the upper surface of the penetrating substrate. Step 9, Topcoat Application: Apply the topcoat using an application tool. The topcoat is an epoxy self-leveling topcoat. After application, the topcoat is formed on the surface of the intermediate coating. Step 10: Construction of the ultra-wear-resistant polyurethane topcoat: (1) Polishing treatment; (2) First, use a construction tool to scrape or spray a layer of ultra-wear-resistant polyurethane paint, and then use a roller to apply another layer of ultra-wear-resistant polyurethane paint. The ultra-wear-resistant polyurethane paint uses a colored polyurethane sealant. After the construction is completed, an ultra-wear-resistant polyurethane topcoat is formed on the surface of the topcoat. The ultra-wear-resistant polyurethane topcoat is then inspected.

[0013] Furthermore, in step 1, the subgrade soil is compacted. The specific steps are as follows: the subgrade soil is backfilled by horizontal layering, with each layer not exceeding 300mm in thickness. During backfilling, a bulldozer is used to spread the soil in parallel, followed by leveling with a small excavator, and then a vibratory roller is used to compact the soil in layers multiple times until the design elevation is met. Then, the bearing capacity is tested. If the foundation bearing capacity does not meet the requirement of ≥100kPa, 150mm thick AB material is used for replacement and compaction until the foundation bearing capacity is ≥100kPa before proceeding to the next step.

[0014] Furthermore, in step 2, the graded crushed stone construction is carried out as follows: The graded crushed stone is laid horizontally from one end of the ground to the other using dump trucks and bulldozers. The paving thickness is controlled at 280mm. A 5t vibratory roller is used to compact the stones according to the operating requirements of "compacting the edges first, then the middle; starting slowly and then speeding up; starting with static compaction and then vibratory compaction." The compaction speed does not exceed 4km / h, and 3-4 compaction passes are performed to ensure uniform compaction and guarantee a compaction coefficient ≥0.95 and a foundation bearing capacity characteristic value F. ak ≥100kPa.

[0015] Furthermore, in step 3, rebar tying and concrete pouring: before tying the rebar, the grid is marked, then the rebar is tied, and after the rebar is tied, the rebar protective layer spacers are installed; then the concrete is poured, and the concrete is vibrated with a vibrator while pouring, and then leveled with a leveling machine.

[0016] Furthermore, step 6 involves grinding and grooving the colored steel-sand tempered concrete flooring, specifically including the following steps: (1) Cut a 6m*6m slit at the column base and the side wall of the track, with a slit depth of 20mm; cut a continuous slit every 30m along the track direction to ensure that the reinforcing steel is cut; (2) Grind the colored steel sand tempered floor; (3) Fill the cut joint with sealant.

[0017] Furthermore, step (1) of step 10 specifically involves: after the surface coating has fully cured, polishing is performed using a resin grinding disc.

[0018] Compared with the prior art, the beneficial effects of this invention are as follows: High wear resistance: This invention adopts a multi-layer composite structure of "colored polyurethane sealant + self-flowing surface coating + mortar intermediate coating + multi-functional interface agent", which significantly improves the wear resistance and impermeability of the surface layer, with wear resistance increased by more than 50%.

[0019] Impermeability and crack resistance: Φ8 bidirectional steel bars are embedded in the concrete base surface at 200×200 mm, and C30P6 impermeable concrete is used. Combined with graded crushed stone layer and plain soil compaction process, the bearing capacity of the foundation is enhanced, crack generation is inhibited and the impermeability of the ground is increased, and the graded crushed stone layer enhances the drainage performance.

[0020] Highly efficient construction: The use of kerfing and grinding techniques to optimize the surface roughness can shorten the construction period by 20%.

[0021] Improved adhesion: By adjusting the construction sequence of the 3mm thick colored steel grit to be applied simultaneously with the concrete layer, the adhesion of the colored steel grit is greatly improved, preventing the ground from peeling off and saving about 40% of labor.

[0022] Aesthetically pleasing and practical: Supports multi-color customization and pattern design to meet the aesthetic needs of industrial scenarios.

[0023] Wide range of applications: This invention is applicable to ground construction in scenarios such as rail transit vehicle depots and logistics warehouses. Attached Figure Description

[0024] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0025] Figure 1 This is a structural diagram of an ultra-wear-resistant colored polyurethane flooring according to the present invention; Figure 2 This is a flowchart illustrating a construction method for an ultra-wear-resistant colored polyurethane flooring according to the present invention. Figure 3 This is a schematic diagram of an ultra-wear-resistant colored polyurethane floor constructed using the method of this invention. Detailed Implementation

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0027] Example 1: In some embodiments, an ultra-wear-resistant colored polyurethane floor includes, from top to bottom, an ultra-wear-resistant polyurethane topcoat, a topcoat, a middle coating, a penetrating undercoat, and a colored steel sand tempered floor. The ultra-wear-resistant polyurethane cover layer uses a colored polyurethane sealant; The topcoat is a self-flowing flat coating. The intermediate coating is a mortar intermediate coating; Two layers of multifunctional interface agent are used to penetrate the bottom layer; Colored steel sand tempered concrete flooring adopts a three-layer structure from top to bottom: I, II, and III. Layer 1: 150mm thick C30P6 concrete, with a 3mm thick layer of cement and colored steel grit (3mm particle size) mixture in a 1:1 mass ratio spread on the surface. The mixture is smoothed as it is poured, and reinforced with φ8 bidirectional steel bars @200X200. Layer II: 280mm thick graded crushed stone, compaction coefficient ≥0.95, characteristic value of foundation bearing capacity F ak ≥100kPa; Layer III: Compacted subgrade soil with a bearing capacity ≥100kPa. If the bearing capacity of the foundation does not meet the requirements, 150mm thick AB material shall be used for replacement and compaction to ensure that the bearing capacity of the foundation is ≥100kPa. In AB material, A material refers to coarse aggregate, such as crushed stone and gravel, with a larger particle size; B material refers to fine aggregate, such as sand, stone chips and soil, with a relatively smaller particle size.

[0028] Example 2: In some embodiments, a method for constructing an ultra-wear-resistant colored polyurethane floor includes the following steps: Step 1, Construction Preparation: Construction management personnel and workers should arrive on time, with clear division of labor. Labor safety protection measures should be implemented. Construction tools and testing tools should be prepared. Construction machinery and equipment should be configured according to plan. Surveying and setting out, as well as water and electricity supply, should be prepared.

[0029] Step 2, Compacting the Subgrade: The subgrade backfilling method adopts horizontal layering, with each layer not exceeding 300mm in thickness. During filling, first use a bulldozer to spread the subgrade in parallel, then use a small excavator to level it, and then use a vibratory roller to compact it in layers multiple times until the design elevation requirement is met. Then, conduct a bearing capacity test (foundation bearing capacity ≥ 100kPa). If the foundation bearing capacity does not meet the requirements, use 150mm thick AB material for replacement and compaction to ensure that the bearing capacity requirements are met. Only after the test is qualified can the next step be carried out.

[0030] Step 3, Graded Crushed Stone Construction: Graded crushed stone is laid horizontally from one end of the ground to the other using dump trucks and bulldozers. The paving thickness is controlled at approximately 280mm. A 5t vibratory roller is used, following the operating requirements of "compacting the edges first, then the middle; starting slowly and then speeding up; static compaction first, then vibratory compaction." The compaction speed should not exceed 4km / h, and 3-4 compaction passes are performed to ensure uniform compaction and guarantee a compaction coefficient ≥0.95 and a foundation bearing capacity characteristic value F. ak ≥100kPa.

[0031] Step 4, Reinforcement Binding and Concrete Pouring: Before binding the reinforcement, mark the grid lines to ensure accurate reinforcement placement. After binding, promptly install reinforcement protective layer spacers to ensure the reinforcement protective thickness meets specifications. Reinforce the perimeter and corners with wooden formwork to prevent concrete leakage. Concrete pouring can only proceed after the supervisor has approved the work. During pouring, first moisten the crushed stone base layer, then vibrate it simultaneously with the pouring process, and finally level it with a leveling machine. Use φ8 bidirectional reinforcement bars @200X200.

[0032] Step 5: Spreading colored steel grit and finishing: Before the concrete initially sets, promptly and evenly spread a 3mm thick mixture of cement and colored steel grit in a 1:1 mass ratio on the 150mm thick C30P6 concrete surface. Use a single-disc finishing machine to clean and finish the surface repeatedly in an "S" shape. Use manual finishing for columns and wall edges to ensure the overall flatness. If conditions permit, a finishing robot can also be used for finishing.

[0033] The construction of the colored steel sand tempered concrete flooring was completed at this point; Step 6, Maintenance: Colored steel sand tempered concrete flooring needs to be repeatedly watered for 28 days for maintenance.

[0034] Step 7: Grinding and cutting the joints of the colored steel sand tempered concrete flooring: (1) Cut a 6m*6m slit at the column base and the side wall of the track, with a slit depth of 20mm; cut a continuous slit every 30m along the track direction to ensure that the reinforcing steel is cut; (2) Deeply grind the colored steel sand hardened floor to increase the contact area between the base coating and the colored steel sand layer, so that the base coating can penetrate deeper into the ground and increase the adhesion. (3) Fill the cut joint with sealant (such as asphalt sealant) to compensate for the influence of ground structural forces; Step 8, Primer Coating Construction: First, clean the surface of the colored steel sand tempered concrete floor. The cleaned surface should be clean, dry, and flat. Then, use a roller to apply the bonding primer back and forth, allowing it to fully penetrate the surface of the colored steel sand tempered concrete floor until a film is formed. Ensure that the coating is even and without any omissions. Apply two coats of the bonding primer using a multi-functional interface agent (such as F701 multi-functional floor interface agent). After construction, a penetrating underlayer will be formed on the surface of the colored steel sand tempered concrete floor. Step 9, intermediate coating construction: Mix cement, quartz sand, fly ash, water-reducing agent and water evenly, and apply with a scraper. After construction, an intermediate coating is formed on the upper surface of the penetrating substrate. Step 10, Topcoat Application: Apply the topcoat using the application tools. After application, a topcoat will form on the surface of the intermediate coating. The topcoat should be smooth, even, and uniform in color. The topcoat is an epoxy self-leveling topcoat; Step 11: Construction of the ultra-wear-resistant polyurethane topcoat: (1) After the topcoat is fully cured, polish it with a resin grinding disc; (2) First, apply a layer of ultra-wear-resistant polyurethane paint with a scraper using a construction tool, and then apply another layer of ultra-wear-resistant polyurethane paint with a roller; the ultra-wear-resistant polyurethane paint uses a colored polyurethane sealant (e.g., Weber two-component waterborne polyurethane sealant 4900). After construction, an ultra-wear-resistant polyurethane overlay is formed on the surface of the topcoat. The ultra-wear-resistant polyurethane overlay is inspected, and the inspection standards are: uniform film formation, no bubbling, uniform color, and good scratch resistance, wear resistance, and acid and alkali resistance.

[0035] Step 12, Inspection and Acceptance: Strictly implement the "three-inspection system" until the acceptance is qualified.

[0036] Example 3: Unlike Example 1, the first layer is 120mm thick C30P6 concrete, with a 3mm thick cement and colored steel grit mixture of 1:1 mass ratio sprinkled on the surface. It is smoothed as it is poured, and reinforced with Φ6 bidirectional steel bars @200X200 inside.

[0037] Example 4: Unlike Example 1, the first layer is 180mm thick C30P6 concrete, with a 3mm thick cement and colored steel grit mixture of 1:1 mass ratio sprinkled on the surface. It is smoothed as it is poured, and reinforced with Φ10 bidirectional steel bars @200X200.

[0038] Example 5: Unlike Example 1, the colored steel grit in layer I is replaced with corundum with a particle size of 5mm.

[0039] Example 6: Unlike Example 1, the colored steel grit in layer I is replaced with quartz sand with a particle size of 2mm.

[0040] Example 7: Unlike Example 2, in step (2) of step 11, the scraping process is replaced by the spraying process to adapt to different construction environments.

[0041] The present invention has the following significant technical effects: High wear resistance: This invention adopts a multi-layer composite structure of "colored polyurethane sealant + self-flowing surface coating + mortar intermediate coating + multi-functional interface agent", which significantly improves the wear resistance and impermeability of the surface layer, with wear resistance increased by more than 50%.

[0042] Impermeability and crack resistance: Φ8 bidirectional steel bars are embedded in the concrete base surface at 200×200 mm, and C30P6 impermeable concrete is used. Combined with graded crushed stone layer and plain soil compaction process, the bearing capacity of the foundation is enhanced, crack generation is inhibited and the impermeability of the ground is increased, and the graded crushed stone layer enhances the drainage performance.

[0043] Highly efficient construction: The use of kerfing and grinding techniques to optimize the surface roughness can shorten the construction period by 20%.

[0044] Improved adhesion: By adjusting the construction sequence of the 3mm thick colored steel grit to be applied simultaneously with the concrete layer, the adhesion of the colored steel grit is greatly improved, preventing the ground from peeling off and saving about 40% of labor.

[0045] Aesthetically pleasing and practical: Supports multi-color customization and pattern design to meet the aesthetic needs of industrial scenarios.

[0046] Wide range of applications: This invention is applicable to ground construction in scenarios such as rail transit vehicle depots and logistics warehouses.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A super wear-resistant colored polyurethane flooring, characterized in that, It includes, from top to bottom, an ultra-wear-resistant polyurethane topcoat, a top coating, a middle coating, a penetrating undercoat, and a colored steel sand tempered floor; The ultra-wear-resistant polyurethane cover layer uses a colored polyurethane sealant; The topcoat is a self-flowing flat coating. The intermediate coating is a mortar intermediate coating; A multifunctional interface agent is used to penetrate the underlying layer; Colored steel sand tempered concrete flooring adopts a three-layer structure from top to bottom: I, II, and III. Layer 1: 120~180mm thick concrete, with cement and sand aggregate mixture sprinkled on the surface, smoothed as it is poured, and reinforced with Φ6~Φ10 bidirectional steel bars inside; Layer II: Graded crushed stone, compaction coefficient ≥ 0.95, characteristic value of foundation bearing capacity F ak ≥100kPa; Layer III: Compacted subgrade soil with a bearing capacity ≥100kPa. If the bearing capacity of the foundation does not meet the requirements, AB material shall be used for replacement and compaction to ensure that the bearing capacity of the foundation is ≥100kPa.

2. The ultra-wear-resistant colored polyurethane flooring according to claim 1, characterized in that, In layer I, a 3mm thick layer of cement and sand aggregate with a mass ratio of 1:1 is spread on the concrete surface. The sand aggregate has a particle size of 2~5mm and is reinforced with bidirectional steel bars @200X200. The sand aggregate is colored steel grit, corundum, or quartz sand.

3. The ultra-wear-resistant colored polyurethane flooring according to claim 2, characterized in that, In layer II, 280mm thick graded crushed stone is used.

4. The ultra-wear-resistant colored polyurethane flooring according to claim 3, characterized in that, In layer III, when the bearing capacity of the foundation does not meet the requirements, 150mm thick AB material is used for replacement and compaction.

5. A construction method for ultra-wear-resistant colored polyurethane flooring according to any one of claims 1 to 4, characterized in that, Includes the following steps: Step 1: Compact the subgrade soil. After construction, ensure the foundation bearing capacity is ≥100kPa before proceeding to the next step. Step 2: Graded crushed stone construction. After construction, ensure a compaction coefficient ≥ 0.95 and a foundation bearing capacity characteristic value F. ak ≥100kPa; Step 3: Reinforcement binding and concrete pouring construction; Step 4: Sprinkle colored steel grit and finish: Before the concrete sets, promptly and evenly sprinkle the cement and colored steel grit mixture onto the concrete surface, and use a single-disc finisher to clean and finish the surface repeatedly in an "S" shape. Step 5, Maintenance: Colored steel sand tempered concrete flooring requires repeated watering for maintenance; Step 6: Grind and cut the joints of the colored steel sand tempered concrete floor. Step 7, Primer Coating Construction: First, clean the surface of the colored steel sand tempered concrete floor; then, use a roller to apply the bonding primer back and forth. The bonding primer uses a multi-functional interface agent, which forms a penetrating underlayer on the surface of the colored steel sand tempered concrete floor after construction. Step 8: Apply the intermediate coating. After application, an intermediate coating will be formed on the upper surface of the penetrating substrate. Step 9, Topcoat Application: Apply the topcoat using an application tool. The topcoat is an epoxy self-leveling topcoat. After application, the topcoat is formed on the surface of the intermediate coating. Step 10: Construction of the ultra-wear-resistant polyurethane topcoat: (1) Polishing treatment; (2) First, use a construction tool to scrape or spray a layer of ultra-wear-resistant polyurethane paint, and then use a roller to apply another layer of ultra-wear-resistant polyurethane paint. The ultra-wear-resistant polyurethane paint uses a colored polyurethane sealant. After the construction is completed, an ultra-wear-resistant polyurethane topcoat is formed on the surface of the topcoat. The ultra-wear-resistant polyurethane topcoat is then inspected.

6. The construction method of the ultra-wear-resistant colored polyurethane flooring according to claim 5, characterized in that, Step 1: Compacting the subgrade. The specific steps are as follows: The subgrade backfilling method adopts horizontal layering, with each layer not exceeding 300mm in thickness. During filling, first use a bulldozer to spread the subgrade in parallel, then use a small excavator to level it, and then use a vibratory roller to compact it in layers multiple times until the design elevation requirement is met. Then, the bearing capacity is tested. If the foundation bearing capacity does not meet the requirement of ≥100kPa, use AB material for replacement and compaction until the foundation bearing capacity is ≥100kPa before proceeding to the next step.

7. The construction method of the ultra-wear-resistant colored polyurethane flooring according to claim 5, characterized in that, Step 2: Graded crushed stone construction. The specific steps are as follows: Graded crushed stone is laid horizontally from one end of the ground to the other using dump trucks and bulldozers. The paving thickness is controlled at 280mm. A 5t vibratory roller is used, following the operating requirements of "compacting the edges first, then the middle; starting slowly, then speeding up; starting with static compaction, then vibratory compaction." The compaction speed should not exceed 4km / h, and 3-4 compaction passes are performed to ensure uniform compaction and guarantee a compaction coefficient ≥0.95 and a foundation bearing capacity characteristic value F. ak ≥100kPa.

8. The construction method of the ultra-wear-resistant colored polyurethane flooring according to claim 5, characterized in that, Step 3, Reinforcement binding and concrete pouring: Before binding the reinforcement, mark the grid lines, then bind the reinforcement, and install reinforcement protective layer spacers after binding; then pour the concrete, vibrating it with a vibrator while pouring, and then leveling it with a leveling machine.

9. The construction method of the ultra-wear-resistant colored polyurethane flooring according to claim 5, characterized in that, Step 6 involves grinding and cutting the joints of the colored steel sand tempered concrete flooring, specifically including the following steps: (1) Cut a 6m*6m slit at the column base and the side wall of the track, with a slit depth of 20mm; cut a continuous slit every 30m along the track direction to ensure that the reinforcing steel is cut; (2) Grind the colored steel sand tempered floor; (3) Fill the cut joint with sealant.

10. The construction method of the ultra-wear-resistant colored polyurethane flooring according to claim 5, characterized in that, Step 10, step (1) specifically involves polishing the surface coating with a resin grinding disc after it has fully cured.

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