High-toughness friction-resistant wear-resistant layer for pavement skid resistance and color change and preparation method of high-toughness friction-resistant wear-resistant layer

Abstract

The invention belongs to the technical field of road surface color changing, and particularly relates to a high-toughness friction-resistant wear-resistant layer for road surface skid resistance and color changing and a preparation method of the high-toughness friction-resistant wear-resistant wear-resistant layer. The mixture of the high-toughness friction-resistant layer comprises the following components in percentage by weight: 10 to 20 percent of binder, 15 to 20 percent of wear-resistant filler, 0 to 5 percent of viscosity modifier, 1 to 3 percent of pigment, 0.2 to 0.5 percent of defoaming agent, 0.05 to 0.2 percent of ultraviolet light absorber, 1 to 2 percent of extinction powder, 0.1 to 0.5 percent of fiber, 50 to 70 percent of wear-resistant aggregate and 5 to 8 percent of curing agent. Compared with the prior art, the high-toughness friction resistance layer prepared by the preparation method disclosed by the invention integrates color diversification, skid resistance and wear resistance of the pavement, and has the effect of long service life.

Description

Technical Field

[0001] The present invention belongs to the technical field of pavement color change, and in particular relates to a high-strength and tough friction-resistant layer for anti-skid and color change of a pavement and a preparation method thereof. Background Art

[0002] Currently, urban roads primarily utilize dark black asphalt or off-white cement-based pavement. This single-ply paving method has dual limitations in terms of visual presentation and functional performance. In terms of color expression, although colored asphalt can achieve a certain degree of color expression through dyeing, its comprehensive physical and chemical properties are significantly inferior to those of traditional asphalt, and its high cost severely restricts its large-scale application. While direct-coating pavement color change technology offers cost advantages, existing products generally suffer from insufficient durability, substandard anti-skid coefficients, and an imbalance in overall cost-performance, making it difficult to meet the needs of modern urban road construction.

[0003] At the same time, pavement anti-skid performance has become a core safety indicator for road engineering. In highway traffic scenarios, the anti-skid coefficient at key nodes such as turning radius sections, steep slopes, and intersections directly determines vehicle braking performance. Especially in rainy and snowy weather conditions, excellent anti-skid performance can effectively prevent safety hazards such as vehicle skidding and lateral movement, improve vehicle stability and control, and reduce the incidence of traffic accidents. Anti-skid performance is also crucial for slow-moving systems such as sidewalks and landscaped roads. When the sidewalk is wet, it becomes slippery, increasing the risk of pedestrians slipping.

[0004] Patent CN112831301B discloses a highly reflective, environmentally friendly, colored, non-slip pavement and its preparation method. The colored non-slip effect is achieved by spreading colored ceramic particles on the surface of the environmentally friendly, non-slip pavement adhesive and spraying an environmentally friendly, non-slip pavement surface protective agent. However, the wear resistance and chemical corrosion resistance of the colored non-slip pavement described in this invention are unknown.

[0005] Based on the above technical problems and safety needs, the research and development of new colored pavements has become an urgent need in the industry. In actual pavement applications, it is very necessary to ensure the anti-slip performance of colored pavements and take into account the anti-slip performance of the pavement and color diversity, high strength and high weather resistance. Summary of the Invention

[0006] (1) Technical issues to be resolved The purpose of the present invention is to solve at least one of the above problems and to provide a high-strength and tough friction resistance layer for anti-skid and color change of road surfaces and its preparation method, so as to solve the problems of poor anti-skid performance, easy delamination, fading, low strength and wear resistance of colored road surfaces in the existing technology, and achieve the effect of taking into account the color diversity of the road surface and anti-skid and wear resistance, and having a long service life.

[0007] (2) Technical solution The purpose of the present invention is achieved through the following technical solutions: The first aspect of the present invention discloses a high-strength and tough friction resistance layer for anti-skid and color-changing road surfaces. The mixture of the high-strength and tough friction resistance layer comprises the following components in parts by weight: Binder 10-20%, wear-resistant filler 15-20%, viscosity regulator 0-5%, colorant 1-3%, defoaming agent 0.2-0.5%, UV absorber 0.05-0.2%, matting powder 1-2%, fiber 0.1-0.5%, wear-resistant aggregate 50-70%, curing agent 5-8%.

[0008] Furthermore, the wear-resistant aggregate is one or more of quartz sand, corundum, copper ore sand and brown corundum with a mesh size of 5-80. The wear-resistant aggregate is made of hard and impurity-free quartz sand, corundum, copper ore sand and brown corundum. When the above materials are used as wear-resistant aggregates, due to their high hardness and high temperature resistance, they are used in high-strength and tough friction resistance layers to achieve the characteristics of uniform dispersion, high strength, high wear resistance, high polishing value, etc. in the anti-skid color change of the road surface, which can significantly increase the anti-skid performance of the road surface, especially the anti-skid performance in rainy days.

[0009] Furthermore, the binder includes one or more of polyurethane binder resin, modified epoxy binder resin, and acrylic binder resin. The binder uses epoxy resin or polyurethane as a base material, and combines the coating with the road surface through strong adhesion, while wrapping other components to prevent delamination.

[0010] Furthermore, the wear-resistant filler includes one or more of kaolin, wollastonite powder and mica powder. The wear-resistant filler can improve the surface hardness and scratch resistance of the high-strength and tough friction resistance layer.

[0011] Furthermore, the viscosity modifier is one or more of propylene glycol methyl ether acetate (PMA), butyl acetate, and trimethylbenzene. This ensures uniform dispersion of aggregate during construction, preventing uneven composition and localized performance degradation caused by sedimentation. The curing agent enhances the strength of the resin matrix through high crosslinking density, reducing material loss caused by embedded abrasive particles. It also promotes full crosslinking and curing of the binder, improving the coating's internal cohesion and interfacial adhesion. The curing agent utilizes a reactive hinge effect with the binder to enhance the curing effect.

[0012] Furthermore, the colorant includes one or more of colored metal oxides, quinacridone and azo pigments. Weather-resistant inorganic pigments, such as iron oxide, can be selected to avoid color changes caused by ultraviolet rays or chemical corrosion.

[0013] Furthermore, the fibers include one or more of polypropylene fibers, polyurethane fibers, and polyester fibers, and the fibers are 3-6 mm in length. The fibers can improve the toughness and bending resistance of the high-strength and toughness friction layer, inhibit crack propagation, reduce delamination caused by stress cracking, and indirectly extend the wear life of the high-strength and toughness friction layer by reducing brittle peeling through enhanced toughness. Furthermore, the fibers enhance the cohesion of the anti-skid layer, thereby achieving ideal road performance for the high-strength and toughness friction layer.

[0014] Furthermore, the defoamer includes any one of polysiloxane and polyether defoamers. The defoamer can be used to suppress bubbles generated during stirring, construction, and reaction, prevent the formation of pore defects within the coating, reduce localized shedding caused by weak points, and make the mixture denser and thus stronger.

[0015] Furthermore, the ultraviolet absorber uses ultraviolet absorbing powder. The addition of ultraviolet absorber can absorb and shield ultraviolet rays, prevent the resin molecular chain from breaking, and delay photooxidative aging. The addition of ultraviolet absorber makes the high-strength and tough friction layer have excellent weather resistance and yellowing resistance. At the same time, weather-resistant inorganic pigments (such as iron oxide) are selected to avoid color changes caused by ultraviolet rays or chemical corrosion.

[0016] Furthermore, the matting powder is silica powder, which can be prepared by a gel method or a precipitation method; adding silica powder as a matting powder can inhibit or eliminate the surface gloss of the high-toughness friction resistance layer, thereby improving the driving safety of roads with a high-toughness friction resistance layer surface.

[0017] The second technical solution of the present invention is to provide a method for preparing the above-mentioned high-strength and tough friction resistance layer for anti-skid and color change of road surface, comprising the following steps: (1) Add the binder into a mixing tank, then add the wear-resistant filler, colorant, defoamer, ultraviolet absorber and matting powder in sequence and stir, add the viscosity modifier and disperse and stir at high speed to obtain a mixture A; (2) adding wear-resistant aggregate and fiber to mixture A and stirring, adding curing agent and mixing evenly to obtain a mixture of the high-strength and tough friction resistance layer; (3) Spraying the mixture prepared in step (2) onto the surface of the road surface to obtain the high-strength and tough friction-resistant layer.

[0018] Furthermore, the viscosity regulator is added and stirred for 15-30 minutes; the wear-resistant aggregate and fiber are added and stirred for 5-10 minutes.

[0019] Furthermore, the mixture of the high-strength and tough friction resistance layer is sprayed onto the surface of the road surface by a mortar sprayer or a real stone paint sprayer.

[0020] Furthermore, the method for preparing the high-strength and tough friction-resistant layer for anti-skid and color-changing road surfaces specifically comprises the following steps: (1) Preparation of the high-strength and tough friction-resistant layer component A for the anti-skid and color-changing road surface: First, 10-20% of the binder is added into a mixing tank, and the mixing tank is placed on a high-speed disperser for stirring. Then, 15-20% of a wear-resistant filler, 1-3% of a colorant, 0.2-0.5% of a defoaming agent, 0.05-0.2% of a UV absorber, and 1-2% of a matting powder are added to the mixing tank in sequence. 0-5% of a viscosity regulator is added depending on the viscosity, and the mixture is dispersed and stirred at high speed on a high-speed disperser for 15-30 minutes to obtain a mixture A. (2) Prefabrication of mixed materials: Before construction, the mixture A is stirred with 50-70% wear-resistant aggregate and 0.1-0.5% fiber by a machine for 5-10 minutes, and then 5-8% curing agent is added and stirred to make the product fully mixed to obtain the mixture of the high-strength and tough friction resistance layer; (3) High strength and toughness friction layer spraying: Use a machine to spray the mixture on the surface of the road surface. Use a mortar sprayer or a real stone paint sprayer according to the road surface requirements. If the spraying viscosity is too high, you can choose to add a small amount of organic solvent or viscosity regulator to dilute it. After spraying, you will get the high-strength and tough friction resistance layer.

[0021] (3) Beneficial effects Compared with the prior art, the present invention has the following advantages: (1) Good anti-skid property: The present invention adds wear-resistant aggregate to the high-strength and tough friction resistance layer. The wear-resistant aggregate has high hardness. Combined with other added components including viscosity regulator, fiber, and wear-resistant filler, the high-strength and tough friction resistance layer of the present invention can achieve the characteristics of uniform dispersion, high strength, high wear resistance, and high polishing value in the anti-skid color change of the road surface, which can significantly improve the anti-skid performance of the road surface, especially the anti-skid performance on rainy days. The anti-skid index of the road surface sprayed with the high-strength and tough ultra-thin wear layer can be increased by more than 10BPN compared with the previous road surface; at the same time, since the wear-resistant filler is added in the present invention, it is also beneficial to enhance the anti-skid performance of the present invention and improve the safety factor of the present invention when it is used after being sprayed on the road surface.

[0022] (2) High strength: The high-toughness friction layer of the present invention significantly improves the bonding strength between the coating and the road surface through the strong adhesion of the binder, the toughening effect of the fiber, the high cross-linking density of the curing agent, and the elimination of pores by the defoaming agent, effectively resisting delamination and cracking; the ultraviolet absorber shields light degradation, and the high-hardness aggregate reduces surface wear, which together extend the service life of the coating in outdoor environments; the high-hardness wear-resistant filler and wear-resistant aggregate directly resist mechanical wear, and its Mohs hardness reaches 6 or above. The curing agent enhances the strength of the binder, and the fiber toughening reduces brittle peeling, comprehensively improving the ability to resist wheel rolling, friction and impact, and can effectively resist road disasters such as resonance and thermal expansion and contraction of the road surface; the multi-component combination method is used to achieve durability, and it can effectively resist pollution and damage to chemicals on the road surface, such as automobile oil and alcohol.

[0023] (3) Color and improved road safety: The high-strength and tough friction layer of the present invention has bright colors and is resistant to UV degradation due to the addition of colorants and UV absorbers. The dense coating of the high-strength and tough friction layer blocks the penetration of pollutants. The double protection ensures that the color is bright for a long time and avoids fading or yellowing. The bright and diverse road surface colors can enhance the visual effect, the beauty of the road surface and increase the color of the city. The road surface after color change has higher recognition at night or in bad weather conditions, which can significantly improve the driver's vision clarity, notice the functional road sections in advance and reduce the occurrence of traffic accidents.

[0024] (4) Thin layer, light weight, low cost: The high-strength and tough friction resistance layer of the present invention is a dense high molecular polymer mixed layer, and the thickness of its anti-skid layer is approximately 2-6 mm. The added weight of the road surface is extremely limited, and will not increase the load-bearing burden of the bridge and road foundation. In addition, the high-strength and tough friction resistance layer of the present invention is easy to spray and does not require any additional operation, so the construction is convenient and fast. The cost of the high-strength and tough friction resistance layer pavement process is significantly lower than that of colored asphalt, cold mix asphalt, ceramic particle bonded anti-skid pavement, etc. It can reduce engineering costs and cost expenditures, which is conducive to expanding production and use. DETAILED DESCRIPTION

[0025] The present invention is described in detail below with reference to specific embodiments.

[0026] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the features in the following embodiments and embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of this application.

[0027] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on this application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement an apparatus and / or practice a method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this apparatus and / or practice this method.

[0028] Additionally, in the following description, specific details are provided to provide a thorough understanding of the examples, however, one skilled in the art will appreciate that the examples can be practiced without these specific details.

[0029] Unless otherwise specified, the raw materials or devices used in the following examples are commercially available raw materials or conventional experimental devices.

[0030] The technical solutions provided by the embodiments of this application are described below with reference to the embodiments.

[0031] The present invention provides a high-strength and tough friction resistance layer for anti-skid and color change of road surfaces and a preparation method thereof. The mixture of the high-strength and tough friction resistance layer comprises the following components in parts by weight: Binder 10-20%, wear-resistant filler 15-20%, viscosity regulator 0-5%, colorant 1-3%, defoaming agent 0.2-0.5%, UV absorber 0.05-0.2%, matting powder 1-2%, fiber 0.1-0.5%, wear-resistant aggregate 50-70%, curing agent 5-8%.

[0032] The wear-resistant aggregate is one or more of 5-80 mesh quartz sand, corundum, copper ore sand and brown corundum; the binder includes one or more of polyurethane binder resin, modified epoxy binder resin and acrylic resin binder resin; the wear-resistant filler includes one or more of kaolin, wollastonite powder and mica powder; the viscosity modifier is one or more of propylene glycol methyl ether acetate (PMA), butyl acetate and trimethylbenzene; the fiber includes one or more of polypropylene fiber, polyurethane fiber and polyester fiber, and the length of the fiber is 3-6 mm; the defoamer includes any one of polysiloxane and polyether defoamer; the ultraviolet absorber uses ultraviolet absorbing powder; the matting powder is silicon dioxide powder; the above chemical reagents are all commercially available chemical reagents.

[0033] The method for preparing the high-strength and tough friction-resistant layer for anti-skid and color-changing road surfaces specifically comprises the following steps: (1) Preparation of the high-strength and tough friction-resistant layer component A for the anti-skid and color-changing road surface: First, 10-20% of the binder is added into a mixing tank, and the mixing tank is placed on a high-speed disperser for stirring. Then, 15-20% of a wear-resistant filler, 1-3% of a colorant, 0.2-0.5% of a defoaming agent, 0.05-0.2% of a UV absorber, and 1-2% of a matting powder are added to the mixing tank in sequence. 0-5% of a viscosity regulator is added depending on the viscosity, and the mixture is dispersed and stirred at high speed on a high-speed disperser for 15-30 minutes to obtain a mixture A. (2) Prefabrication of mixed materials: Before construction, the mixture A is stirred with 50-70% wear-resistant aggregate and 0.1-0.5% fiber by a machine for 5-10 minutes, and then 5-8% curing agent is added and stirred to make the product fully mixed to obtain the mixture of the high-strength and tough friction resistance layer; (3) High strength and toughness friction layer spraying: Use a machine to spray the mixture on the surface of the road surface. Use a mortar sprayer or a real stone paint sprayer according to the road surface requirements. If the spraying viscosity is too high, you can choose to add a small amount of organic solvent or viscosity regulator to dilute it. After spraying, you will get the high-strength and tough friction resistance layer. Example 1

[0034] This embodiment provides a high-strength and tough friction resistance layer for anti-skid and color change of road surfaces and a preparation method thereof. In terms of weight percentage, the mixture of the high-strength and tough friction resistance layer comprises the following components: Binder 10%, wear-resistant filler 15%, viscosity regulator 3%, colorant 1%, defoamer 0.2%, UV absorber 0.1%, matting powder 1%, fiber 0.2%, wear-resistant aggregate 64.5%, curing agent 5%, wherein the binder is polyurethane resin.

[0035] The specific steps of the method for preparing the high-strength and tough friction-resistant layer for anti-skid and color-changing road surfaces are as follows: (1) Preparation of the high-strength and tough friction-resistant layer component A for the anti-skid and color-changing road surface: First, a polyurethane binder resin is placed in a mixing tank, and the mixing tank is placed on a high-speed disperser for stirring. Then, a wear-resistant filler, a colorant, a defoaming agent, an ultraviolet absorber, and a matting powder are added to the mixing tank in sequence. A viscosity modifier is added according to the viscosity, and the mixture is dispersed and stirred at high speed on a high-speed disperser for 30 minutes to obtain a mixture A. (2) Prefabrication of mixed materials: Before construction, the mixture A is mixed with the wear-resistant aggregate and the fiber by a machine for 10 minutes, and then 5% of a curing agent is added and stirred to make the product fully mixed to obtain the mixture of the high-strength and tough friction resistance layer; (3) High strength and toughness friction layer spraying: According to the requirements of the road surface, a mortar sprayer is used to spray the mixture on the surface of the road surface, and the high-strength and tough friction resistance layer is obtained after spraying.

[0036] The anti-slip performance results of the high-strength and tough friction-resistant layer prepared in Example 1 are shown in Table 1: Table 1 Anti-slip performance results of the high-strength and tough friction-resistant layer prepared in Example 1 Road surface comparison Ordinary asphalt pavement Ordinary permeable pavement High-strength and tough friction layer pavement Anti-slip value (swing type) ≥60 (BPN) ≥65 (BPN) ≥75 (BPN) As can be seen from Table 1, the high-strength and tough friction layer prepared by the present invention has better anti-skid performance than the existing road surface. Example 2

[0037] This embodiment provides a high-strength and tough friction resistance layer for anti-skid and color change of road surfaces and a preparation method thereof. In terms of weight percentage, the mixture of the high-strength and tough friction resistance layer comprises the following components: Binder 15%, wear-resistant filler 20%, viscosity regulator 3%, colorant 2.5%, defoamer 0.2%, UV absorber 0.3%, matting powder 1.5%, fiber 0.5%, wear-resistant aggregate 50%, curing agent 7%, wherein the binder is modified epoxy resin.

[0038] The preparation method of the high-toughness friction resistance layer in Example 2 is the same as that in Example 1.

[0039] The raw materials and percentages used in Example 1 and Example 2 are shown in Table 2: Table 2 Raw materials and percentages used in Example 1 and Example 2 Raw material name Example 1 (%) Example 2 (%) adhesive Polyurethane resin 10 Modified epoxy resin 15 Wear-resistant filler 15 20 Viscosity regulator 3 3 Pigments 1 2.5 defoaming agent 0.2 0.2 UV absorbers 0.1 0.3 matting powder 1 1.5 fiber 0.2 0.5 Wear-resistant aggregate 64.5 50 curing agent 5 7 The high-strength and tough friction-resistant layers prepared in Example 1 and Example 2 were subjected to technical testing, and the results are shown in Table 3: Table 3 Technical test results of high-strength and tough friction-resistant layer of Example 1 and Example 2 Detection items Example 1 test results Example 2 test results Testing basis Appearance After drying and forming, the color and aggregate particle distribution should be uniform, without cracks or aggregate particle falling off. After drying and forming, the color and aggregate particle distribution should be uniform, without cracks or aggregate particle falling off. — Bond strength 2.5MPa 3.2 MPa DL / T5793-2021 Slip resistance 85BPN 72BPN JGJ / T331-2014 structural depth 1.0mm 0.7mm JTG D50-2006 wear resistance 28mm 25mm GB / T 12988-2009 Chemical corrosion resistance (no cracking, wrinkling, blistering, softening, peeling, etc.) ≥168h ≥168h GB / T 2567 flame retardancy Does not burn in air Does not burn in air GB / T 2408 As can be seen from Table 2, the high-strength and tough friction resistance layer prepared by the present invention has a uniform appearance, flame retardant effect, high bonding strength, strong anti-skid properties, a thin coating, strong wear resistance, good weather resistance and strength, and can be used for anti-skid and color change of road surfaces.

[0040] Comparative Example 1 This comparative example provides a colored pavement coating and a preparation method thereof. The mixture of the high-strength and tough friction-resistant layer comprises the following components, calculated in parts by weight: Binder 10%, wear-resistant filler 79.5%, viscosity regulator 3%, colorant 1%, defoaming agent 0.2%, UV absorber 0.1%, matting powder 1%, fiber 0.2%, curing agent 5%, wherein the binder is polyurethane resin.

[0041] The method for preparing the colored pavement coating of Comparative Example 1 is the same as that of Example 1, except that no wear-resistant aggregate is added. The high-strength and tough friction-resistant layer prepared in Comparative Example 1 was subjected to technical testing, and the results are shown in Table 4: Table 4 Technical test results of the colored pavement coating of Comparative Example 1 Detection items Comparative Example 1 Test Results Testing basis Appearance The surface effect is flat and smooth - Bond strength 2.8 MPa DL / T5793-2021 Slip resistance 35BPN JGJ / T331-2014 structural depth 0.1mm JTG D50-2006 wear resistance 35mm GB / T 12988-2009 Chemical corrosion resistance (no cracking, wrinkling, blistering, softening, peeling, etc.) ≥168h GB / T 2567 flame retardancy Does not burn in air GB / T 2408 It can be seen from Table 4 that compared with the high-strength and tough friction resistance layers of Examples 1 and 2, the lack of wear-resistant aggregate results in poor skid resistance of the colored pavement coating of Comparative Example 1, indicating that the addition of wear-resistant aggregate in the high-strength and tough friction resistance layer of the present invention makes the skid resistance strong, and can be used for anti-skid and color change of pavement.

[0042] Comparative Example 2 This comparative example provides a colored pavement coating and a preparation method thereof. The mixture of the high-strength and tough friction-resistant layer comprises the following components, calculated in parts by weight: Binder 10%, wear-resistant filler 15%, viscosity regulator 3%, colorant 1%, defoamer 0.2%, UV absorber 0.1%, matting powder 1%, wear-resistant aggregate 64.7%, curing agent 5%, wherein the binder is polyurethane resin.

[0043] Except for not adding fibers, the preparation method of the colored pavement coating of Comparative Example 1 is the same as that of Example 1. The high-strength and tough friction-resistance layer prepared in Comparative Example 1 was subjected to technical testing, and the results are shown in Table 5: Table 5 Technical test results of the colored pavement coating of Comparative Example 2 Detection items Comparative Example 2 test results Testing basis Appearance After drying and forming, the color and aggregate particle distribution should be uniform, without cracks or aggregate particle falling off. Visual inspection Bond strength 2.3MPa DL / T5793-2021 Slip resistance 85BPN JGJ / T331-2014 structural depth 1.0mm JTG D50-2006 wear resistance 28mm GB / T 12988-2009 Chemical corrosion resistance (no cracking, wrinkling, blistering, softening, peeling, etc.) ≤168h GB / T 2567 flame retardancy Does not burn in air GB / T 2408 It can be seen from Table 5 that compared with the high-strength and tough friction resistance layers of Examples 1 and 2, the lack of added fibers results in poor chemical corrosion resistance of the colored pavement coating of Comparative Example 2, indicating that the addition of fibers to the high-strength and tough friction resistance layer of the present invention makes it resistant to chemical corrosion, and the addition of fibers reduces brittle peeling of the high-strength and tough friction resistance layer of the present invention, comprehensively improving its ability to resist wheel crushing, friction and impact, and can be used for anti-skid and color change of pavement.

[0044] Comparative Example 3 This comparative example provides a colored pavement coating and a preparation method thereof. The mixture of the high-strength and tough friction-resistant layer comprises the following components, calculated in parts by weight: The composition comprises 10% binder, 15% wear-resistant filler, 3% viscosity modifier, 1% colorant, 0.2% defoamer, 0.1% UV absorber, 1% matting agent, 0.2% fiber, 64.5% wear-resistant aggregate, and 5% curing agent. The binder is a common binder other than polyurethane binder resin, modified epoxy binder resin, or acrylic resin binder resin. The high-strength and tough friction layer prepared in Comparative Example 1 was subjected to technical testing, and the results are shown in Table 6. The preparation method of the colored pavement coating in Comparative Example 3 is consistent with that in Example 1.

[0045] Table 6 Technical test results of the colored pavement coating of Comparative Example 3 Detection items Comparative Example 3 test results Testing basis Appearance After drying and forming, the color and aggregate particle distribution should be uniform, without cracks or aggregate particle falling off. Visual inspection Bond strength 1.2MPa DL / T5793-2021 Slip resistance 85BPN JGJ / T331-2014 structural depth 1.0mm JTG D50-2006 wear resistance 31mm GB / T 12988-2009 Chemical corrosion resistance (no cracking, wrinkling, blistering, softening, peeling, etc.) ≤168h GB / T 2567 flame retardancy Does not burn in air GB / T 2408 As can be seen from Table 6, compared with the high-strength and tough friction resistance layers of Examples 1 and 2, the use of only ordinary binders results in low bonding strength and poor chemical corrosion resistance of the colored pavement coating of Comparative Example 3. This shows that the high-strength and tough friction resistance layer of the present invention uses polyurethane bonding resin, modified epoxy bonding resin, and acrylic resin bonding resin as binders to make it resistant to chemical corrosion. The binder enables the high-strength and tough friction resistance layer of the present invention to combine the coating with the pavement through strong adhesion, while wrapping other components to prevent stratification, and can be used for anti-skid and color change of pavement.

[0046] In summary, the high-strength and tough friction-resistant layer of the present invention has the effects of anti-slip, wear resistance, corrosion resistance and long service life under the action of multiple components.

[0047] The same or similar parts between the various embodiments in this specification can be referred to each other, and each embodiment focuses on the differences from other embodiments.

[0048] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A high-strength and tough friction layer for anti-skid and color-changing road surfaces, characterized in that: The mixture of the high-toughness friction resistance layer comprises the following components in parts by weight: Binder 10-20%, wear-resistant filler 15-20%, viscosity regulator 0-5%, colorant 1-3%, defoaming agent 0.2-0.5%, UV absorber 0.05-0.2%, matting powder 1-2%, fiber 0.1-0.5%, wear-resistant aggregate 50-70%, curing agent 5-8%.

2. The high-strength and tough friction layer for anti-skid and color-changing road surface according to claim 1, characterized in that: The wear-resistant aggregate is one or more of 5-80 mesh quartz sand, corundum, copper ore sand and brown corundum.

3. The high-strength and tough friction-resistant layer for anti-skid and color-changing road surfaces according to claim 1, characterized in that: The adhesive includes one or more of polyurethane adhesive resin, modified epoxy adhesive resin, and acrylic resin adhesive resin.

4. The high-strength and tough friction layer for anti-skid and color-changing road surface according to claim 1, characterized in that: The wear-resistant filler includes one or more of kaolin, wollastonite powder and mica powder.

5. The high-strength and tough friction layer for anti-skid and color-changing road surface according to claim 1, characterized in that: The viscosity modifier is one or more of propylene glycol methyl ether acetate, butyl acetate, and trimethylbenzene.

6. The high-strength and tough friction-resistant layer for anti-skid and color-changing road surfaces according to claim 1, characterized in that: The fibers include one or more of polypropylene fibers, polyurethane fibers, and polyester fibers, and the length of the fibers is 3-6 mm.

7. The high-strength and tough friction layer for anti-skid and color-changing road surface according to claim 1, characterized in that: The defoaming agent includes any one of polysiloxane and polyether defoaming agents.

8. A method for preparing a high-strength and tough friction resistance layer according to claim 1, characterized in that: The steps include: (1) Add the binder into a mixing tank, then add the wear-resistant filler, colorant, defoamer, ultraviolet absorber and matting powder in sequence and stir, add the viscosity modifier and disperse and stir at high speed to obtain a mixture A; (2) adding wear-resistant aggregate and fiber to mixture A and stirring, adding curing agent and mixing evenly to obtain a mixture of the high-strength and tough friction resistance layer; (3) Spraying the mixture prepared in step (2) onto the surface of the road surface to obtain the high-strength and tough friction-resistant layer.

9. The method for preparing a high-toughness friction layer according to claim 8, characterized in that: After the viscosity regulator is added, stirring is continued for 15-30 minutes; after the wear-resistant aggregate and fiber are added, stirring is continued for 5-10 minutes.

10. The method for preparing a high-strength and tough friction resistance layer according to claim 8, characterized in that: The mixture of the high-strength and tough friction resistance layer is sprayed onto the surface of the road surface through a mortar sprayer or a real stone paint sprayer.