Epoxy resin concrete deceleration strip and construction method thereof

Abstract

The invention relates to the technical field of road signs, and particularly discloses an epoxy resin concrete deceleration strip and a construction method thereof.The construction method comprises the following steps that 1, marking is conducted, specifically, the construction face of the deceleration strip is polished and cleaned up, and the contour line of the deceleration strip is marked out; step 2, primer coating: preparing an epoxy resin glue solution as the primer coating, and coating the interior of the contour line of the deceleration strip with the primer coating; and step 3, speed bump construction: firstly preparing an epoxy resin glue solution as a cementing material, then mixing the cementing material with mineral aggregate to obtain a mixture, and then paving the mixture to obtain the epoxy resin concrete speed bump. By the adoption of the technical scheme, the technical problems that in the prior art, a common concrete deceleration strip is long in construction period, and road passing efficiency is affected can be solved.

Description

Technical Field

[0001] This invention relates to the field of road sign technology, specifically to an epoxy resin concrete speed bump and its construction method. Background Technology

[0002] At highway tollbooth areas, vehicles need to smoothly transition from high-speed driving to low-speed or even stationary states to complete toll payment or ETC (Electronic Toll Collection) transactions. To ensure traffic safety, regulate traffic order, and reduce accident rates, mandatory speed bumps are typically installed at a certain distance from the tollbooth. These speed bumps, as important traffic control facilities, physically force vehicles to slow down, thereby improving traffic safety and management efficiency.

[0003] Currently, the most common speed bumps are rubber speed bumps. Rubber speed bumps are widely used in urban roads, parking lots and other places due to their convenient installation and low cost. Their structure is mostly prefabricated blocks, which are fixed to the road surface by bolts. The height is generally 5~10cm and the width is about 30~50cm. Rubber speed bumps have the following disadvantages: (1) Poor durability. They are prone to aging and cracking when exposed to sunlight, rain and repeated vehicle rolling for a long time, resulting in a short service life; (2) Limited load-bearing capacity. They are difficult to withstand the frequent rolling of large trucks and are prone to deformation or damage; (3) High maintenance frequency. Due to loose connecting parts or damage to the body, they need to be replaced regularly, resulting in high maintenance costs; (4) Poor adhesion to asphalt pavement. They are prone to edge lifting, affecting driving comfort and even causing safety hazards; (5) Poor environmental adaptability. They soften at high temperatures and crack at low temperatures, and their performance is unstable under extreme climatic conditions. Therefore, in scenarios such as highway toll stations with high traffic volume, many heavy vehicles and complex operating environment, the application of rubber speed bumps has obvious limitations.

[0004] To overcome the shortcomings of rubber speed bumps, some projects have attempted to use ordinary concrete speed bumps cast on-site, taking advantage of their high strength and wear resistance to improve durability. However, ordinary concrete speed bumps still have the following problems during use: (1) Long construction period, long curing time for on-site casting, affecting road traffic efficiency; (2) Poor flexibility, large impact, and excessive rigidity, resulting in a strong bumpy feeling when vehicles pass through, affecting driving comfort; (3) Poor adhesion to the original road surface, insufficient adhesion between traditional cement-based materials and asphalt or cement concrete pavement, easily causing problems such as hollowing and falling off; (4) Insufficient surface anti-slip performance, the surface of ordinary concrete speed bumps is smooth, making it easy to slip in rainy weather, posing a safety hazard; (5) Monochromatic color and lack of guidance function, unable to achieve functions such as visual guidance and nighttime reflection. Therefore, although ordinary concrete speed bumps are superior to rubber speed bumps in terms of strength, they still have problems such as long construction period, poor functionality, and insufficient safety. Summary of the Invention

[0005] The present invention aims to provide an epoxy resin concrete speed bump and its construction method to solve the technical problem that the construction period of ordinary concrete speed bumps in the prior art is long and affects the efficiency of road traffic.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A construction method for epoxy resin concrete speed bumps includes the following steps: Step 1, Marking: Grind and clean the surface of the speed bump, and mark the outline of the speed bump. Step 2, Apply primer: Prepare epoxy resin liquid as primer, and apply primer to the outline of the speed bump; Step 3, Speed ​​Bump Construction: First, prepare epoxy resin liquid as a binder, then mix the binder with the aggregate to obtain a mixture, and then pave the mixture to obtain an epoxy resin concrete speed bump.

[0007] The principles and advantages of this scheme are: In practical applications, a new type of speed bump structure is formed by applying a high-performance epoxy resin primer to the base surface and using epoxy resin adhesive as a binder to mix with the aggregate. This results in a structure that combines high strength, high adhesion, good anti-skid performance, and rapid construction. It is suitable for the construction of mandatory speed bumps in high-traffic areas such as highway toll stations where high durability, anti-skid properties, and construction efficiency are required.

[0008] 1. This solution enhances interfacial adhesion using an epoxy resin primer, addressing the issue of traditional speed bumps easily detaching. Epoxy resin possesses excellent penetration and adhesion properties. Applying an epoxy resin primer to a clean road surface after marking effectively seals the micropores of the base layer and forms a strong transition layer, improving the bond strength between epoxy resin concrete and asphalt or cement concrete pavement. This prevents structural failures such as hollowing, peeling, and edge curling caused by repeated vehicle traffic, thus avoiding the problem of poor adhesion between ordinary concrete or rubber speed bumps and the original road surface.

[0009] 2. This solution uses epoxy resin as a binder, replacing traditional cement or asphalt, which improves the overall mechanical properties. Epoxy resin is a two-component reactive polymer material that forms a three-dimensional cross-linked network structure after curing, possessing excellent mechanical strength, chemical corrosion resistance, and dimensional stability. Therefore, speed bumps paved with epoxy resin concrete have higher compressive, flexural, and impact resistance, and can withstand frequent rolling by large trucks without cracking or breaking. This solves the problems of excessive rigidity and brittleness of ordinary concrete speed bumps, as well as the poor load-bearing capacity of rubber speed bumps, while avoiding the disadvantages of asphalt materials such as high-temperature softening and low-temperature brittleness.

[0010] 3. This solution improves the surface anti-skid performance of the speed bump by using mineral aggregates, ensuring safe passage in rainy weather. By mixing mineral aggregates with a high coefficient of friction in a specific ratio with epoxy resin, a composite structure with a rough surface and high friction can be formed. This allows the BPN value of the speed bump surface to reach over 55, meeting the high standards of anti-skid performance required by highways in wet conditions. This solves the problem of ordinary concrete speed bumps having a smooth surface and low coefficient of friction, effectively reducing the risk of vehicles slipping when passing over speed bumps and improving driving safety.

[0011] 4. This solution allows for room temperature construction and rapid curing, shortening the construction period and reducing traffic disruption. Epoxy resin materials can cure rapidly at room temperature without the need for heating equipment, and the curing process is minimally affected by temperature changes. Therefore, the epoxy resin adhesive and aggregate can be laid immediately after mixing and compaction, and traffic can be opened shortly afterward (usually 2-12 hours). Compared to the 7-day curing period required for ordinary concrete, this solution significantly shortens the construction period and is particularly suitable for scenarios with high traffic volume and stringent traffic management requirements, such as highway toll stations.

[0012] 5. The speed bumps prepared using this solution are highly durable, have low maintenance costs, and align with the trend of green and low-carbon development. Epoxy resin materials possess excellent weather resistance, aging resistance, and chemical corrosion resistance, and are not easily deteriorated over long-term use. Therefore, the speed bumps prepared using epoxy resin materials in this solution have a long service life, significantly reducing the frequency of replacement. Furthermore, the epoxy resin concrete speed bumps prepared using this solution are not easily affected by environmental factors such as ultraviolet radiation, rainwater, and oil stains, requiring minimal maintenance and offering high overall economic efficiency.

[0013] 6. This solution allows for the colorization of speed bumps, enhancing the road landscape and visual guidance function. Epoxy resin adhesive can be mixed with pigments to create various colors, and when combined with colored aggregates for paving, speed bumps in red, yellow, blue, and other colors can be achieved, enhancing road visibility and providing effective warning and guidance in special road sections (such as near schools, hospitals, and toll plazas), thus improving the aesthetics of urban roads.

[0014] Preferably, as an improvement, step 3 includes the following specific steps: Step 3-1: Preparation of the mixture: Prepare an epoxy resin solution as a binder. Add iron black pigment and light calcium carbonate filler to the epoxy resin solution while stirring, and continue stirring for 2-3 minutes to obtain the mixture. Step 3-2: Preparation of the mixture: Prepare stone and quartz sand filler with a particle size of 3-5mm as aggregates. Pour the mixture into the aggregates and mix evenly to obtain the mixture. Step 3-3: Laying the speed bump: Transport the mixed material to the construction surface of the speed bump, and use tools to lay the mixed material onto the primer to obtain the epoxy resin concrete speed bump of the target size.

[0015] Beneficial Effects: In step 3-1, the epoxy resin adhesive, as the main binder, possesses excellent adhesion, weather resistance, and mechanical properties. Iron black pigment is used for coloring, giving the speed bump a black appearance, enhancing visual warning effects, and also providing some UV shielding, thus improving the material's aging resistance. Lightweight calcium carbonate filler adjusts the adhesive viscosity, improving workability, reducing costs, and contributing to improved dimensional stability and wear resistance. Subsequent mixing time is controlled at 2-3 minutes to ensure sufficient dispersion of pigments and fillers, preventing agglomeration that could affect the final performance. This solution achieves the preparation of a functional adhesive with controllable color and good workability, improving the weather resistance, wear resistance, and economy of epoxy resin concrete, and laying a solid foundation for the uniformity of subsequent mixing materials.

[0016] In step 3-2, 3-5mm diameter aggregate provides skeletal support and forms a rough surface, which is a key component to ensure the anti-skid performance of the speed bump (BPN≥55). Quartz sand filler fills the voids, optimizes the gradation structure, and improves density and strength. The mixture prepared in step 3-1 is poured into the aggregate and mixed evenly, so that each particle is fully coated with epoxy resin, forming a dense and highly adhesive composite material. This solution can form a uniformly structured and rough-surfaced mixture with excellent load-bearing capacity and anti-skid performance. The epoxy resin fully coats the aggregate, enhances internal adhesion, and prevents loosening and falling off during use. The aggregate + resin system combines high strength with moderate flexibility to adapt to expansion and contraction caused by temperature changes.

[0017] In step 3-3, the mixture is directly spread on the bonding layer formed by the primer, utilizing the rapid curing characteristics of epoxy resin to achieve integrated molding of the interface and the main structure. Tools such as scrapers and compaction rollers can be used to control the thickness and flatness, ensuring consistent geometric dimensions and an aesthetically pleasing appearance of the speed bump. Construction can be completed at room temperature without the need for heating equipment, conforming to the concept of green construction. This solution produces high-quality speed bumps with neat edges and moderate surface roughness, meeting both anti-slip and aesthetic requirements. It bonds firmly to the base pavement, resisting warping, cracking, or detachment. Construction is convenient, and traffic can be opened quickly, effectively solving the problem of long curing times required for traditional cement concrete. It is suitable for applications requiring high construction efficiency, such as highway toll stations.

[0018] In summary, this solution not only solves the problems of easy aging of traditional rubber speed bumps and poor adhesion and insufficient anti-skid performance of ordinary concrete speed bumps, but also shows significant advantages in terms of material performance, construction efficiency, environmental adaptability and service life, and has broad prospects for promotion and application.

[0019] Preferably, as an improvement, the method further includes the following steps: Step 4: Apply yellow paint: After the epoxy resin concrete speed bump has hardened, prepare epoxy resin solution. Add iron yellow pigment and light calcium carbonate filler to the epoxy resin solution while stirring, and continue stirring for 2-3 minutes to obtain yellow paint. Apply the yellow paint to the resin concrete speed bump at intervals.

[0020] Beneficial effects: This solution uses epoxy resin as the coating matrix. Epoxy resin has excellent adhesion, weather resistance and chemical stability. After curing, it forms a dense coating that can effectively seal surface micropores and prevent moisture and oil from penetrating. At the same time, it has good wear resistance and is not easy to peel off after long-term use.

[0021] This solution adds iron oxide yellow pigment to achieve color identification. Iron oxide yellow pigment is an inorganic oxide pigment with excellent lightfastness, heat resistance and weather resistance. Therefore, the coating color is stable and does not easily fade. It can maintain its bright color for a long time in complex outdoor environments. In addition, yellow is a commonly used warning color in traffic engineering, which has high visibility and can effectively remind drivers of the presence of speed bumps ahead, ensuring driving safety.

[0022] This solution incorporates lightweight calcium carbonate filler to improve workability. Lightweight calcium carbonate has low density and good dispersibility, which can adjust the viscosity of the coating, improve the brushing workability, and enhance the hiding power and thixotropy of the coating without significantly affecting the coating strength, thus helping to reduce costs and improve economic efficiency.

[0023] This solution uses an intermittent brushing method to optimize the visual effect. Yellow paint is applied in strips at intervals on black (or other dark-colored) epoxy resin concrete speed bumps to create a sharp contrast and enhance visual impact. It can simulate traffic markings such as zebra crossings and speed bumps, improving the consistency of road signs.

[0024] Preferably, as an improvement, the epoxy resin solution in steps 2, 3 and 4 is obtained by mixing epoxy resin A and curing agent B, and the ratio of epoxy resin A to curing agent B is 100:23 to 100:38; the epoxy resin A includes flexible epoxy resin and E-51 epoxy resin, and the curing agent B includes polyether amine curing agent and aliphatic amine curing agent.

[0025] Beneficial effects: By adjusting the ratio of epoxy resin A to curing agent B, precise matching of the material's mechanical and adhesive properties can be achieved in different functional layers, meeting the comprehensive requirements of speed bump structures for high strength, high anti-slip properties, good interfacial adhesion, and moderate flexibility. During the chemical reaction, epoxy resin A and curing agent B form a three-dimensional network cross-linked structure, the cross-linking density of which is directly controlled by the A:B ratio. With changes in the A:B ratio, the cured epoxy resin adhesive exhibits different physical and mechanical behaviors, as detailed below: 1. When the mass ratio of epoxy resin A to curing agent B is greater than 100:23, epoxy resin A is in excess and curing agent B is insufficient. The excess epoxy groups in epoxy resin A cannot fully participate in the reaction, resulting in incomplete curing, low crosslinking density, and a large number of unreacted functional groups and free volumes inside the cured product. This leads to low cohesion of the cured product, resulting in low tensile strength and difficulty in forming a good interfacial bond with cement concrete, which manifests as poor bonding strength and is not conducive to engineering applications.

[0026] 2. When the mass ratio of epoxy resin A to curing agent B is within the range of 100:23 to 100:38, the ratio is close to the theoretical stoichiometry, allowing for sufficient reaction between the epoxy groups and amine groups to form a high-density three-dimensional cross-linked network structure. Within this ratio range, the cross-linking density is significantly increased, imparting higher hardness and mechanical strength to the cured product. Simultaneously, because the flexible epoxy resin and polyetheramine curing agent contain long flexible segments, they can effectively alleviate the internal stress caused by curing shrinkage on the basis of high cross-linking density, avoiding increased material brittleness. Therefore, the cured product within this ratio range exhibits excellent tensile properties, namely high tensile strength and elongation at break, and possesses good elasticity and deformation adaptability. Furthermore, the coating structure formed by the epoxy resin adhesive is dense and possesses a certain degree of flexibility, forming a strong interfacial bond with the cement concrete surface, achieving optimal bonding strength and meeting the requirements for durability and peel resistance in practical engineering.

[0027] 3. When the mass ratio of epoxy resin A to curing agent B is less than 100:38, epoxy resin A is insufficient and curing agent B is excessive. The epoxy groups of epoxy resin A almost completely participate in the reaction, cross-linking and curing with the amine groups of curing agent B, while the excess amine curing agent remains in the cured system. In this case, the excess curing agent molecules act like a plasticizer, reducing the intermolecular interaction forces and inhibiting further increases in cross-linking density. Simultaneously, nitrogen atoms in aliphatic amine curing agents readily form hydrogen bonds with hydrogen atoms in adjacent molecular chains, enhancing intermolecular physical interactions and causing the cured epoxy resin adhesive to exhibit certain thermoplastic characteristics. In this state, the tensile strength of the cured product decreases, but the elongation at break increases significantly, and the material's flexibility is greatly improved. However, excessive curing agent may cause phase separation in localized areas, disrupting the coating uniformity and affecting its adhesion to the cement concrete interface, leading to a decrease in bond strength.

[0028] In summary, this solution constructs an epoxy resin adhesive system with controllable performance and strong process adaptability by compounding flexible epoxy resin with E-51 epoxy resin and combining it with polyether amine and aliphatic amine composite curing agents. By adjusting the mass ratio of epoxy resin A to curing agent B (100:23~100:38), the tensile strength, elongation at break, and adhesion performance to cement concrete of the cured product can be effectively controlled.

[0029] Preferably, as an improvement, in step 3, the binder is 8 to 16 parts per 100 parts of mineral material.

[0030] Beneficial effects: The binder is an epoxy resin liquid with excellent adhesion, mechanical properties, and weather resistance. In the mixture, the binder can include mineral particles, enhancing interfacial adhesion, filling voids, increasing density, and simultaneously constructing a three-dimensional cross-linked network structure, thus improving overall mechanical properties. The minerals include iron black pigment, lightweight calcium carbonate filler, quartz sand filler, and 3-5mm aggregate. In the mixture, the aggregate provides a load-bearing skeleton, determining the wear resistance, anti-skid properties (BPN value), and surface roughness of the speed bump, while also affecting the mixture's flowability, compaction, and other construction properties.

[0031] This solution adds 8-16 parts by weight of epoxy resin as a binder for every 100 parts by weight of mineral aggregate, achieving an optimal balance between material properties and construction techniques. Specifically, when the binder content is 8-12 parts per 100 parts of mineral aggregate, the ratio of binder to mineral aggregate is moderate, forming a dense structure that results in strong adhesion, high strength, and excellent anti-slip properties in the mixture, representing a preferred range that balances functionality and economy. When the binder content is 12-16 parts per 100 parts of mineral aggregate, the binder content is higher, resulting in a denser and stronger mixture, but the cost increases, and the increased flexibility may reduce crack resistance, making it suitable for scenarios with special requirements for compressive and impact resistance.

[0032] If the amount of binder per 100 parts of aggregate is less than 8 parts, the binder is insufficient, the aggregate is not adequately coated, resulting in weak adhesion, loose structure, low compressive and flexural strength, and a tendency for particles to fall off. If the amount of binder per 100 parts of aggregate is greater than 16 parts, the cost increases significantly, the material becomes more plastic, construction becomes more difficult, and problems such as sagging and surface whitening may occur.

[0033] This solution achieves the following technological breakthroughs compared to existing technologies by limiting the amount of epoxy resin binder to 8~16 parts / 100 parts of mineral material: (1) Transformation from "rigid bonding" to "flexible bonding": The epoxy resin system gives the mixture appropriate flexibility and improves crack resistance; (2) Upgrade from "single function" to "multi-functional composite": It has the characteristics of high strength, high anti-slip, good bonding and rapid construction; (3) Evolution from "high maintenance" to "low maintenance": The material has strong durability, is not easily damaged in long-term use, and has low maintenance costs; (4) Leap from "general formula" to "precise proportion": By controlling the amount of binder, the material performance can be precisely controlled.

[0034] Preferably, as an improvement, in step 3, the proportions of each component of the mineral material are as follows, based on 100 parts of mineral material: 1-10 parts of iron black pigment, 5-15 parts of light calcium carbonate filler, 50-80 parts of stone with a particle size of 3-5mm, and 10-40 parts of quartz sand filler.

[0035] Beneficial effects: This scheme uses a multi-component synergistic approach to construct the aggregate system, enabling the mixture to meet mechanical performance requirements while also possessing good functionality and construction adaptability, as detailed below: (1) 50-80 parts of aggregate with a particle size of 3-5mm provide the main load-bearing skeleton of the mixture, forming surface roughness, which is a key factor in achieving a high coefficient of friction (BPN≥55) and enhancing wear resistance and compressive strength. On the one hand, the moderate particle size of the aggregate (3-5mm) ensures effective interlocking between particles without affecting the flowability of the mixture; on the other hand, the rough surface of the aggregate with certain edges and corners can enhance the interfacial adhesion between the aggregate and the epoxy resin. Therefore, 3-5mm aggregate can ensure that the speed bump has sufficient load-bearing capacity and excellent anti-slip performance in wet conditions.

[0036] (2) 10-40 parts of quartz sand filler can fill the gaps between large stone particles, improve the density of the mixture, adjust the overall gradation, improve the workability and compaction effect, enhance the surface smoothness of the material, and prevent local loosening and falling off. Quartz sand particles are fine and uniform, which can effectively improve the rheological properties of the mixture. Its high hardness and chemical stability make it less prone to wear or weathering during long-term use. After being combined with epoxy resin, it forms a dense transition layer, which enhances the internal bonding force. Therefore, quartz sand filler can improve the density and workability of the mixture, while maintaining good wear resistance and crack resistance.

[0037] (3) 5-15 parts of lightweight calcium carbonate filler can improve the rheological properties of epoxy resin, prevent dripping or spillage during construction, increase the volume of the mixture, reduce unit cost, and enhance the hiding power and thixotropy of the material without affecting its main properties. Lightweight calcium carbonate has a low density and a high specific surface area, which can effectively absorb the free-flowing components in the resin. As a functional filler, it can improve the workability and coating uniformity of the mixture to a certain extent, and also has a certain buffering effect, which helps to alleviate the internal stress concentration caused by temperature changes. Therefore, lightweight calcium carbonate filler can optimize the workability, control costs, and maintain the overall stability and mechanical properties of the mixture.

[0038] (4) 1-10 parts of iron black pigment can achieve black or dark coloring of the mixture, enhance the visual recognition of speed bumps, improve the contrast of nighttime reflective marking systems, strengthen traffic guidance functions, and also have ultraviolet shielding effects, delaying material aging. Iron black pigment is an inorganic oxide pigment with excellent weather resistance, heat resistance, and chemical stability. Dispersed in epoxy resin, it can be evenly distributed on the surface of the mixture. The dark background color can form a strong contrast with the subsequently applied yellow paint, enhancing the warning effect. Therefore, iron black pigment can realize the color design of speed bumps, improving traffic safety and the aesthetic value of urban roads.

[0039] In summary, this solution achieves the following technical effects: First, structural strength: the multi-grade mineral aggregate combination creates a reasonable gradation, forming a dense structure that significantly improves compressive, flexural, and impact resistance. Second, surface functionality: the surface roughness is suitable, with a high coefficient of friction (BPN≥55), maintaining good anti-slip performance even in wet conditions. Third, bonding performance: the epoxy resin fully coats the mineral aggregate, working synergistically with the primer to ensure strong interfacial bonding, preventing delamination and blistering. Fourth, strong construction adaptability: the addition of lightweight calcium carbonate and quartz sand optimizes the fluidity and compaction of the mixture, facilitating rapid paving and molding at room temperature. Fifth, functional integration: iron black pigment gives the mixture a black appearance, enhancing visual warning and nighttime reflectivity, improving traffic safety. Sixth, reasonable economic efficiency: the scientifically configured mineral aggregate ratio controls material costs while ensuring performance, making it suitable for large-scale promotion and application.

[0040] Preferably, as an improvement, in step 4, based on 100 parts of yellow paint, the proportions of each component of the yellow paint are: 30-60 parts of epoxy resin adhesive, 5-25 parts of iron yellow pigment, and 20-50 parts of light calcium carbonate filler.

[0041] Beneficial effects: This solution uses epoxy resin as the matrix, combined with iron oxide yellow pigment for coloring, and supplemented with light calcium carbonate to adjust the application performance and cost, thus creating a functional topcoat with high visibility, strong adhesion, and good weather resistance, as detailed below: (1) 30-60 parts of epoxy resin adhesive constitute the main film-forming substance of the coating, which determines the basic physicochemical properties of the coating and provides excellent adhesion, ensuring that the coating is firmly bonded to the epoxy resin concrete substrate. At the same time, it gives the coating good water resistance, oil resistance and UV aging resistance. After curing, epoxy resin forms a dense cross-linked network structure with excellent sealing and weather resistance. It can be cured quickly at room temperature, which is suitable for engineering scenarios that are sensitive to construction period, such as highway toll stations. It can enhance the adhesion to speed bumps and prevent the coating from falling off. Therefore, epoxy resin adhesive can ensure that the yellow coating has excellent adhesion, durability and environmental adaptability.

[0042] (2) 5-25 parts of iron yellow pigment can achieve yellow coloring of the coating, improve the visibility of speed bumps, enhance the contrast of nighttime reflective marking systems, strengthen traffic guidance functions, and have excellent weather resistance and UV resistance, making it resistant to fading over long-term use. Iron yellow pigment is an inorganic oxide pigment, with iron oxide (Fe2O3·H2O) as its main component. It is chemically stable, resistant to acids and alkalis, high temperatures, and strong UV resistance. It disperses evenly in epoxy resin, effectively improving the hiding power and color stability of the coating. Therefore, iron yellow pigment can achieve the color design of speed bumps, enhancing traffic safety and the aesthetic value of urban roads.

[0043] (3) 20-50 parts of light calcium carbonate filler can adjust the viscosity of the coating, improve workability, prevent dripping and spillage, increase the volume of the coating, reduce unit cost, and at the same time improve the hiding power and thixotropy of the coating, enhancing the uniformity of construction. Light calcium carbonate has a low density and a high specific surface area, which can effectively absorb the free-flowing components in the adhesive. Without affecting the main performance, it optimizes the rheological properties of the coating, helps to alleviate the internal stress concentration caused by temperature changes, and reduces the risk of cracking. Therefore, light calcium carbonate can significantly improve construction efficiency and economy while ensuring the performance of the coating.

[0044] In summary, this solution achieves the following technical effects: First, visual warning: the yellow coating has high visibility, especially at night or in rainy / foggy weather, effectively improving driving safety. Second, signage guidance: the yellow coating provides a clear contrast to the black epoxy resin concrete speed bumps, enhancing drivers' ability to anticipate the speed bump's location. Third, color stability: the iron oxide yellow pigment + epoxy resin system has excellent resistance to UV aging and is not prone to fading over long-term use. Fourth, surface protection: the yellow coating, as a functional top layer, further seals the speed bump surface, improving its waterproof, oil-proof, and pollution-resistant capabilities. Fifth, strong construction adaptability: the addition of lightweight calcium carbonate improves the coating's rheological properties, facilitating room temperature spraying or roller application and improving construction efficiency. Sixth, cost control: reasonable control of epoxy resin usage and filler ratio reduces overall material costs without sacrificing performance.

[0045] Preferably, as an improvement, in step 1, tape is applied to the outer edge of the outline.

[0046] Beneficial effects: After the marking is completed, this method involves affixing tape (such as masking tape, PVC tape, etc.) to the outer edge of the speed bump outline as a temporary boundary control measure during construction. This ensures the accuracy and consistency of the subsequent epoxy resin concrete mix laying area. Specifically, the tape has a certain degree of adhesion and structural stability, which can act as physical isolation and boundary restriction during the epoxy resin concrete mix laying process. It is also easy to remove later and will not cause contamination or damage to the cured surface.

[0047] Preferably, as an improvement, for asphalt pavement, construction can be carried out directly on its surface; for new cement pavement, it needs to be cured for 7 days, and then the laitance on the cement surface should be removed by mechanical grinding; for old cement pavement, mechanical grinding is used to roughen and enlarge the surface; damaged or cracked pavement needs to be repaired and leveled before construction can proceed.

[0048] Beneficial Effects: Since speed bumps are typically installed on asphalt or cement concrete pavements, and different types of pavements have different surface structures, porosity, moisture content, and strength characteristics, targeted pretreatment must be carried out according to the base layer type before epoxy resin concrete paving to ensure good adhesion and structural stability between the subsequent materials and the base layer. This solution adopts differentiated pretreatment measures based on the physical state and surface characteristics of different types of pavements, which can optimize the interfacial bonding quality between epoxy resin concrete and the base layer. Details are as follows: (1) Asphalt pavement: The surface of asphalt pavement has a certain roughness (texture depth), and there is no laitance or free water on the surface. Epoxy resin can penetrate well and form an anchoring effect. Moreover, epoxy resin and asphalt materials have a certain compatibility, which is conducive to interfacial bonding. Therefore, complex pretreatment procedures can be eliminated, the construction period can be shortened, and the surface friction coefficient is moderate, which facilitates the penetration and bonding of the primer. It is suitable for the rapid construction needs of busy road sections.

[0049] (2) New cement pavement: Newly poured cement concrete will initially form a layer of weakly bonded laitance, mainly composed of incompletely hydrated cement particles and free water. The laitance layer is loose and porous. If it is not removed, it will significantly reduce the bond strength between the epoxy resin concrete and the base layer. Curing for 7 days helps the cement to fully hydrate, improve the base layer strength, and reduce shrinkage deformation. Therefore, it is necessary to remove the laitance to expose the dense cement aggregate, so as to enhance the interfacial bonding force, reduce delamination, hollowing and other defects caused by the instability of the base layer in the later stage, improve the permeability and adhesion of the epoxy resin primer, and ensure the overall structural durability.

[0050] (3) Old cement pavement: After long-term use, the surface of old cement pavement tends to be smooth, and there may even be problems such as oil stains, carbonization, and powdering. Mechanical grinding can remove surface contaminants and increase surface roughness. Roughening and roughening treatment can form a micro-anchoring structure, providing a "mechanical interlocking" foundation for epoxy resin. This solution can significantly improve the bonding strength between epoxy resin concrete and the old base layer, enhance the mechanical properties of the interface transition zone, prevent peeling and falling off, improve the applicability and economy of old road reconstruction projects, and extend the service life of the road.

[0051] (4) Damaged and cracked pavement: Cracks or damaged areas on the pavement have structural defects, reducing its load-bearing capacity. If no repair is carried out before construction, the epoxy resin concrete is prone to cracking due to deformation of the base layer. The repair material must have good adhesion and crack resistance to form an integrated structure with the original base layer. This solution can avoid structural failure caused by unstable base layer, improve the overall flatness and load-bearing capacity of epoxy resin concrete, and ensure the durability and safety of speed bumps during use.

[0052] An epoxy resin concrete speed bump is manufactured using the aforementioned construction method. It has a bottom width of 400mm, a height of 25~30mm, and a circular arc shape in cross-section.

[0053] The principles and advantages of this scheme are: 1. This solution sets the bottom width of the speed bump at 400mm, optimizing lateral load-bearing capacity and coverage. The speed bump width is slightly larger than the tire spacing of a typical passenger car (usually 180-250mm) to ensure all wheels can make contact. A width that is too small can cause one tire to overshoot the obstacle, affecting deceleration; a width that is too large will increase vehicle bumps and reduce driving comfort. Therefore, a width of 400mm covers the tire tracks of most vehicle types, ensuring effective deceleration while avoiding the strong vibrations caused by excessive width, thus improving driving comfort.

[0054] 2. This solution sets the height of the speed bumps at 25-30mm, balancing deceleration effectiveness with smooth traffic flow. The height of the speed bump determines its disturbance to vehicles; if it's too low (<20mm), it won't attract the driver's attention and won't decelerate effectively, while if it's too high (>30mm), it may damage the vehicle chassis or cause a risk of vehicle bouncing. Therefore, a height of 25-30mm achieves effective deceleration without significantly affecting comfort, meets the design speed limit control target, accommodates the traffic needs of both small and large vehicles, and has a wide range of applications.

[0055] 3. This solution uses a circular arc shape for the cross-section of the speed bump, which improves the smoothness of the transition and the shock absorption effect. Compared with the trapezoidal or rectangular cross-sections of existing technologies, the circular arc cross-section has a gentler slope change, which reduces the impact force at the moment of contact between the tire and the speed bump, conforming to the natural rolling trajectory of the tire when in contact with the ground during vehicle movement. Therefore, the circular arc cross-section can significantly reduce vibration and noise when vehicles pass over it, extend the service life of the speed bump, reduce damage caused by repeated impacts, improve the overall road traffic quality, and conform to the human-centered design concept of modern urban traffic.

[0056] 4. The epoxy resin concrete speed bump in this scheme is prepared by the above-mentioned epoxy resin concrete speed bump construction method and has the following key performance advantages, forming a good synergy with the geometric structure of the speed bump: (1) High bonding strength: firmly bonded to asphalt or cement base layer, preventing edge lifting or falling off; (2) High compressive and bending strength: able to withstand frequent rolling under a width of 400mm without easily breaking or collapsing; (3) Good wear resistance: still maintains structural integrity when subjected to repeated tire friction on the arc surface; (4) Excellent weather resistance: does not deform or age when exposed to the outdoor environment for a long time, ensuring the continuous effectiveness of the deceleration function. Attached Figure Description

[0057] Figure 1 This is a table showing the components and dosages of the primer, mixing agent, and yellow paint in Example 1 of the present invention.

[0058] Figure 2 This table shows the effect of different ratios of epoxy resin A and curing agent B on the properties of epoxy resin adhesive in Example 1 of the present invention.

[0059] Figure 3 This is a table showing the effect of different ratios of epoxy resin A and curing agent B on the performance of the mixture in Example 1 of the present invention.

[0060] Figure 4 This is a table showing the effect of different proportions of mineral components on the performance of the mixture in Example 1 of the present invention.

[0061] Figure 5 This is a schematic diagram of the cross-sectional structure of the epoxy resin concrete speed bump in Embodiment 1 of the present invention. Detailed Implementation

[0062] The following detailed description illustrates the specific implementation method: Example 1 This invention provides a construction method for epoxy resin concrete speed bumps, which involves first closing traffic as required, and then constructing the speed bumps according to the following steps: Step 1, Marking: Grind and clean the surface of the speed bump, mark the outline of the speed bump, and stick tape along the outer edge of the outline.

[0063] Step 2, Apply primer: Prepare epoxy resin liquid as primer and apply primer to the outline of the speed bump.

[0064] The epoxy resin adhesive is obtained by mixing epoxy resin A and curing agent B in a ratio of 100:23 to 100:38. Epoxy resin A includes flexible epoxy resin and E-51 epoxy resin; specifically, the flexible epoxy resin is a polyurethane-modified epoxy resin. Curing agent B includes polyetheramine curing agents and aliphatic amine curing agents; specifically, polyetheramine curing agents can be D-230 curing agent, D-400 curing agent, etc., and aliphatic amine curing agents can be diethylenetriamine or triethylenetetramine curing agents.

[0065] The specific operation in this embodiment is as follows: 18 kg of epoxy resin A and 6 kg of curing agent B are poured into a 50 L plastic bucket, that is, the ratio of epoxy resin A to curing agent B is 3:1. The mixture is stirred for 1 minute with a hand-held electric mixer to obtain a primer. The primer is then applied to the speed bump construction area, that is, within the outline of the speed bump, using a brush roller.

[0066] In this embodiment, epoxy resin A in the primer is selected as polyurethane-modified epoxy resin, and curing agent B is selected as D-230 curing agent. In other embodiments, epoxy resin A in the primer can be selected as E-51 epoxy resin, and curing agent B can be selected as D-400 curing agent, diethylenetriamine, or triethylenetetramine curing agent.

[0067] Each set of primer can cover a speed bump with a base width of 400mm and a base length of 120-200mm. It is not necessary to wait for the primer to be surface dry before proceeding to the next step of applying the epoxy resin concrete speed bump.

[0068] Step 3, Speed ​​Bump Construction: First, prepare epoxy resin liquid as a binder, then mix the binder with the aggregate to obtain a mixture, and then pave the mixture to obtain an epoxy resin concrete speed bump.

[0069] The epoxy resin adhesive is obtained by mixing epoxy resin A and curing agent B, with a ratio of 100:23 to 100:38. Epoxy resin A includes flexible epoxy resin and E-51 epoxy resin; specifically, the flexible epoxy resin is a polyurethane-modified epoxy resin. Curing agent B includes polyetheramine curing agents and aliphatic amine curing agents; specifically, polyetheramine curing agents can be D-230 or D-400, and aliphatic amine curing agents can be diethylenetriamine or triethylenetetramine. The binder consists of 8 to 16 parts per 100 parts of mineral aggregate. The proportions of the mineral aggregate components per 100 parts are: 1 to 10 parts iron black pigment, 5 to 15 parts light calcium carbonate filler, 50 to 80 parts stone with a particle size of 3 to 5 mm, and 10 to 40 parts quartz sand filler.

[0070] Step 3 includes the following specific steps: Step 3-1: Preparation of the mixture: Prepare an epoxy resin solution as a binder. Add iron black pigment and light calcium carbonate filler to the epoxy resin solution while stirring, and continue stirring for 2-3 minutes to obtain the mixture.

[0071] The specific operation in this embodiment is as follows: 18 kg of epoxy resin A and 6 kg of curing agent B are poured into a 50 L plastic bucket, i.e., the ratio of epoxy resin A to curing agent B is 3:1. The mixture is stirred for 1 minute with a hand-held electric mixer to obtain a binder. Then, while stirring, 2 kg of iron black pigment and 12.5 kg of light calcium carbonate filler are added to the binder, and stirring is continued for 3 minutes to obtain a mixture.

[0072] In this embodiment, epoxy resin A in the binder is selected as polyurethane-modified epoxy resin, and curing agent B is selected as D-230 curing agent. In other embodiments, epoxy resin A in the binder may be selected as E-51 epoxy resin, and curing agent B may be selected as D-400 curing agent, diethylenetriamine, or triethylenetetramine curing agent.

[0073] Step 3-2: Prepare the mixture: Prepare stone and quartz sand filler with a particle size of 3-5mm as aggregate. Pour the mixture into the aggregate and mix evenly to obtain the mixture.

[0074] The specific operation of this embodiment is as follows: prepare stone and quartz sand filler with a particle size of 3~5mm as aggregate, lay a hard board on the road surface, specifically a wooden board or iron plate, pour 100Kg of stone with a particle size of 3~5mm and 25Kg of quartz sand on the hard board, dig a round pit in the middle, pour the mixture prepared in step 3-1 into the round pit, and then repeatedly mix the aggregate around the mixture with the mixture until it is mixed into a uniform mixture.

[0075] Step 3-3: Laying the speed bump: Transport the mixed material to the construction surface of the speed bump, and use tools to lay the mixed material onto the primer to obtain the epoxy resin concrete speed bump of the target size.

[0076] The specific operation of this embodiment is as follows: the mixture prepared in step 3-2 is loaded into a hand-pushed material cart, transported to the speed bump working surface, and laid on the primer with tools such as shovels and trowels to obtain an epoxy resin concrete speed bump of the target size.

[0077] Each batch of mix can be used to pave approximately 10m of epoxy resin concrete speed bumps with a bottom width of 400mm, a height of 25~30mm, and a circular arc cross-section.

[0078] Depending on the temperature, the epoxy resin concrete speed bump can harden and be opened to traffic in 2-12 hours.

[0079] Depending on the design requirements, the following steps may also be included: Step 4: Apply yellow paint: After the epoxy resin concrete speed bump has hardened, prepare epoxy resin solution. Add iron yellow pigment and light calcium carbonate filler to the epoxy resin solution while stirring, and continue stirring for 2-3 minutes to obtain yellow paint. Apply the yellow paint to the resin concrete speed bump at intervals.

[0080] The epoxy resin adhesive is obtained by mixing epoxy resin A and curing agent B, with a ratio of 100:23 to 100:38. Epoxy resin A includes flexible epoxy resin and E-51 epoxy resin; specifically, the flexible epoxy resin is a polyurethane-modified epoxy resin. Curing agent B includes polyetheramine curing agents and aliphatic amine curing agents; specifically, polyetheramine curing agents can be D-230 curing agent, D-400 curing agent, etc., and aliphatic amine curing agents can be diethylenetriamine or triethylenetetramine curing agents. For 100 parts of yellow paint, the proportions of each component are: epoxy resin adhesive 30-60 parts, iron oxide yellow pigment 5-25 parts, and light calcium carbonate filler 20-50 parts.

[0081] The specific operation of this embodiment is as follows: After the epoxy resin concrete speed bump has hardened, 18 kg of epoxy resin A and 6 kg of curing agent B are poured into a 50 L plastic bucket, i.e., the ratio of epoxy resin A to curing agent B is 3:1. The mixture is stirred for 1 minute with a hand-held electric mixer to obtain an epoxy resin adhesive. Then, while stirring, 2 kg of iron oxide yellow pigment and 12.5 kg of light calcium carbonate filler are added to the epoxy resin adhesive, and stirring is continued for 3 minutes to obtain a yellow paint. The yellow paint is then applied intermittently to the surface of the epoxy resin concrete speed bump using a brush roller. The brush width and spacing are adjusted according to design requirements.

[0082] In this embodiment, epoxy resin A in the yellow coating is selected as polyurethane-modified epoxy resin, and curing agent B is selected as D-230 curing agent. In other embodiments, epoxy resin A in the yellow coating can be selected as E-51 epoxy resin, and curing agent B can be selected as D-400 curing agent, diethylenetriamine, or triethylenetetramine curing agent.

[0083] Each set of yellow paint can cover an epoxy resin concrete speed bump of 50-100m in length.

[0084] Depending on the temperature, the yellow paint should be left to cure for 2-12 hours before traffic can resume.

[0085] It should be noted that the construction method of epoxy resin concrete speed bump provided by this invention has the following requirements for the road surface: for asphalt pavement, it can be directly constructed on its surface; for new cement pavement, it needs to be cured for 7 days, and then the laitance on the cement surface should be removed by mechanical grinding; for old cement pavement, mechanical grinding is used to roughen and enlarge the surface; damaged or cracked pavement needs to be repaired and leveled before construction can proceed.

[0086] The construction temperature is 5℃~40℃, and the construction surface must be clean and dry, free of loose layers, oil stains and other contaminants.

[0087] For ease of application, the components and quantities of the primer prepared in step 2, the mixing material prepared in step 3, and the yellow paint prepared in step 4 of Example 1 are summarized in the attached table. Figure 1 The table is shown below.

[0088] Experiment 1: Testing the properties of epoxy resin adhesive Under otherwise unchanged conditions, the effect of the ratio of epoxy resin A to curing agent B on the properties of the epoxy resin adhesive was tested. The test results are attached. Figure 2 The table is shown below.

[0089] Experiment 2: Testing the performance of the mixture 1. Under the condition that the ratio of binder to aggregate is the same, the effect of the ratio of epoxy resin A to curing agent B on the performance of the mixture was tested. The test results are attached. Figure 3 The table is shown below.

[0090] 2. Under the condition that the ratio of epoxy resin A to curing agent B is the same, and the ratio of binder to aggregate is the same, the effect of the aggregate component ratio on the performance of the mixture is tested. The test results are attached. Figure 4 The table is shown below.

[0091] This invention also provides an epoxy resin concrete speed bump, which is manufactured using the above-mentioned construction method for an epoxy resin concrete speed bump, as shown in the attached figure. Figure 5 As shown, the bottom width of the speed bump is 400mm and the height is 25~30mm. Specifically, the height can be 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, etc., and the cross-section is an arc shape.

[0092] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A construction method for epoxy resin concrete speed bumps, characterized in that: Includes the following steps: Step 1, Marking: Grind and clean the surface of the speed bump, and mark the outline of the speed bump. Step 2, Apply primer: Prepare epoxy resin liquid as primer, and apply primer to the outline of the speed bump; Step 3, Speed ​​Bump Construction: First, prepare epoxy resin liquid as a binder, then mix the binder with the aggregate to obtain a mixture, and then pave the mixture to obtain an epoxy resin concrete speed bump.

2. The construction method of an epoxy resin concrete speed bump according to claim 1, characterized in that: Step 3 includes the following specific steps: Step 3-1: Preparation of the mixture: Prepare epoxy resin solution as a binder. Add iron black pigment and light calcium carbonate filler to the epoxy resin solution while stirring, and continue stirring for 2-3 minutes to obtain the mixture. Step 3-2: Preparation of the mixture: Prepare stone and quartz sand filler with a particle size of 3-5mm as aggregates. Pour the mixture into the aggregates and mix evenly to obtain the mixture. Step 3-3, Laying the speed bump: Transport the mixed material to the construction surface of the speed bump, and use tools to lay the mixed material onto the primer to obtain the epoxy resin concrete speed bump of the target size.

3. The construction method of an epoxy resin concrete speed bump according to claim 2, characterized in that: It also includes the following steps: Step 4: Apply yellow paint: After the epoxy resin concrete speed bump has hardened, prepare epoxy resin solution. Add iron yellow pigment and light calcium carbonate filler to the epoxy resin solution while stirring, and continue stirring for 2-3 minutes to obtain yellow paint. Apply the yellow paint to the resin concrete speed bump at intervals.

4. The construction method of an epoxy resin concrete speed bump according to claim 3, characterized in that: The epoxy resin solution in steps 2, 3 and 4 is obtained by mixing epoxy resin A and curing agent B, with a ratio of epoxy resin A to curing agent B of 100:23 to 100:38; epoxy resin A includes flexible epoxy resin and E-51 epoxy resin, and curing agent B includes polyether amine curing agent and aliphatic amine curing agent.

5. The construction method of an epoxy resin concrete speed bump according to claim 4, characterized in that: In step 3, the binder is 8 to 16 parts per 100 parts of mineral material.

6. The construction method of an epoxy resin concrete quick-setting belt according to claim 5, characterized in that: In step 3, based on 100 parts of mineral material, the proportions of each component of the mineral material are as follows: 1-10 parts of iron black pigment, 5-15 parts of light calcium carbonate filler, 50-80 parts of stone with a particle size of 3-5mm, and 10-40 parts of quartz sand filler.

7. The construction method of an epoxy resin concrete speed bump according to claim 6, characterized in that: In step 4, based on 100 parts of yellow paint, the proportions of each component of the yellow paint are as follows: 30-60 parts of epoxy resin adhesive, 5-25 parts of iron yellow pigment, and 20-50 parts of light calcium carbonate filler.

8. The construction method of an epoxy resin concrete speed bump according to claim 7, characterized in that: In step 1, tape is applied to the outer edge of the outline.

9. A construction method for an epoxy resin concrete speed bump according to claim 8, characterized in that: For asphalt pavement, construction can be carried out directly on its surface; for new cement pavement, it needs to be cured for 7 days, and then the laitance on the cement surface should be removed by mechanical grinding; for old cement pavement, mechanical grinding is used to roughen and polish the surface; damaged or cracked pavement must be repaired and leveled before construction can proceed.

10. An epoxy resin concrete speed bump, characterized in that: The epoxy resin concrete speed bump is manufactured using the construction method described in any one of claims 1-9. The bottom width is 400mm, the height is 25~30mm, and the cross-section is arc-shaped.

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