Epoxy terrazzo floor containing 3D resin grid anti-crack layer and construction method of epoxy terrazzo floor

Abstract

The invention relates to the field of building terraces, and discloses an epoxy grindstone terrace containing a 3D resin grid anti-crack layer, the epoxy grindstone terrace comprises a concrete base layer, a middle anti-crack layer and an epoxy grindstone layer, the middle anti-crack layer is located between the concrete base layer and the epoxy grindstone layer, the middle anti-crack layer is formed by combining 3D grid cloth and epoxy resin filler, and the epoxy grindstone layer is located between the middle anti-crack layer and the epoxy grindstone layer. The 3D gridding cloth has elasticity, a plurality of connecting strips are arranged between the upper surface and the lower surface of the 3D gridding cloth, the epoxy resin filler wraps the 3D gridding cloth and completely fills gaps in the 3D gridding cloth, and the epoxy resin filler and the 3D gridding cloth are the same in thickness and integrated. The 3D gridding cloth with a certain three-dimensional structure is used as a framework of the middle anti-cracking layer, the liquid epoxy resin is added into the 3D gridding cloth to serve as filler, the cured epoxy resin and the 3D gridding cloth are combined to form the middle anti-cracking layer with excellent mechanical performance, the cracking problem of the epoxy terrazzo floor can be thoroughly solved with the small thickness, and the service life of the epoxy terrazzo floor is prolonged. And the method has excellent economical efficiency and high construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of building flooring, and more particularly to an epoxy terrazzo flooring comprising a 3D resin mesh crack-resistant layer and a construction method thereof. Background Technology

[0002] Epoxy terrazzo flooring is widely used in modern architectural decoration due to its seamless appearance, rich colors, varied patterns, and ease of cleaning and maintenance. However, a critical problem arises with long-term use: cracking. This phenomenon stems from volume fluctuations in the concrete substrate caused by changes in external conditions such as temperature and humidity. These fluctuations eventually lead to cracks in the concrete itself, which then spread to the epoxy terrazzo surface, causing it to lose its original integrity and functionality.

[0003] Surface cracking not only affects aesthetics but, more importantly, it compromises the integrity of the floor, impacting functionality and potentially posing safety hazards. This is especially true in critical facilities such as airports and hospitals, where any imperfections in the floor can directly affect operational safety and service quality. To effectively address the negative impact of concrete cracking on epoxy terrazzo flooring, the industry typically employs a strategy of adding an intermediate crack-resistant layer between the epoxy terrazzo layer and the concrete substrate. This layer aims to buffer and inhibit the propagation of cracks from the concrete substrate to the epoxy terrazzo layer. Traditional intermediate crack-resistant layers mainly include, as shown in the attached... Figure 1 The polymer mortar crack-resistant layer shown is attached Figure 2 The two types of steel fiber reinforced concrete crack-resistant layers are shown.

[0004] When using polymer mortar layer, concrete, sand, polymer and water must be mixed evenly according to the ratio, laid flat and cured for 7 days to form an intermediate crack-resistant layer with a thickness of not less than 50mm. When using steel fiber concrete layer, steel fibers must be added to conventional commercial concrete according to the ratio, and a separation joint (the separation joint has a crack-resistant effect) should be set at a certain interval after laying to form an intermediate crack-resistant layer with a thickness of not less than 50mm.

[0005] Both of the aforementioned solutions utilize a rigid intermediate crack-resistant layer, relying on its structural rigidity to achieve crack resistance. Therefore, the thicker the intermediate layer, the higher its compressive strength and the better its crack resistance. However, increasing the thickness of the intermediate crack-resistant layer increases the overall weight and reduces usable building volume, thus lowering space utilization. For example, with steel fiber reinforced concrete layers, every 50mm increase in thickness adds 125kg to the weight per square meter. Due to cost and weight considerations, existing crack-resistant layers are typically 50-80mm thick. Based on feedback from actual use, this type of layer still cannot fundamentally eliminate the cracking problem of epoxy terrazzo layers. Therefore, it is necessary to develop a thinner intermediate crack-resistant layer with excellent crack resistance to completely solve the cracking problem of epoxy terrazzo flooring. Summary of the Invention

[0006] To address the problems existing in current technologies, such as the high thickness and weight of polymer mortar anti-cracking layers or steel fiber reinforced concrete layers used in epoxy terrazzo flooring, which cannot completely solve the cracking problem of epoxy terrazzo flooring, this invention aims to provide a construction method for epoxy terrazzo flooring that includes a 3D resin mesh anti-cracking layer. This method utilizes a 3D mesh fabric with a certain three-dimensional structure as the skeleton of the intermediate anti-cracking layer, and adds liquid epoxy resin as a filler to the 3D mesh fabric. The cured epoxy resin and the 3D mesh fabric combine to form an intermediate anti-cracking layer with excellent mechanical properties. This method can completely solve the cracking problem of epoxy terrazzo flooring with a relatively small thickness, possessing excellent economic efficiency and high construction efficiency, and facilitating large-scale application.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows:

[0008] A construction method for epoxy terrazzo flooring including a 3D resin mesh crack-resistant layer includes the following steps:

[0009] S1. Repair and clean the protrusions and pits on the upper surface of the concrete base to make the upper surface of the concrete base level and clean.

[0010] S2. Install partition strips along the edge of the upper surface of the concrete base layer, and bond and fix the two partition strips that are in contact with each other to seal the annular space enclosed by all the partition strips.

[0011] S3. Apply a layer of liquid epoxy resin to the upper surface of the concrete base layer within the annular space enclosed by the separator strip to form a base coating.

[0012] S4. Before the liquid epoxy resin of the base layer dries, lay the 3D mesh cloth flat on the liquid epoxy resin layer and press it flat so that the 3D mesh cloth is in full contact with the base layer and the 3D mesh cloth fills the annular space enclosed by the separator strip.

[0013] S5. After the liquid epoxy resin of the base coating has dried, fill the 3D mesh with liquid epoxy resin until the liquid surface of the epoxy resin is level with the upper surface of the 3D mesh.

[0014] S6. After the liquid epoxy resin in the 3D mesh has cured, lay an epoxy terrazzo layer on top of the intermediate crack-resistant layer formed by the 3D mesh and epoxy resin filler.

[0015] The present invention is further configured such that, in step S2, the bottom of the separator strip is fixed to the concrete base layer with adhesive.

[0016] The present invention is further configured such that: the 3D mesh fabric is elastic and there are multiple connecting strips between the upper and lower surfaces of the 3D mesh fabric.

[0017] The present invention is further configured such that the 3D mesh fabric is made of modified polyester fiber material.

[0018] The present invention is further configured such that the thickness of the 3D mesh fabric is 3-5mm.

[0019] The present invention also provides an epoxy terrazzo flooring comprising a 3D resin mesh anti-crack layer, including a concrete base layer, an intermediate anti-crack layer and an epoxy terrazzo layer. The intermediate anti-crack layer is located between the concrete base layer and the epoxy terrazzo layer. The intermediate anti-crack layer is formed by combining a 3D mesh fabric and an epoxy resin filler. The upper and lower surfaces of the 3D mesh fabric have multiple connecting strips and the 3D mesh fabric is elastic. The epoxy resin filler wraps around the 3D mesh fabric and completely fills the gaps inside the 3D mesh fabric. The epoxy resin filler and the 3D mesh fabric have the same thickness and are integrated into one piece.

[0020] The present invention is further configured to include a base coating layer located between the concrete base layer and the intermediate crack-resistant layer, wherein the base coating layer is epoxy resin.

[0021] The present invention is further configured such that the 3D mesh fabric is made of modified polyester fiber material.

[0022] The present invention is further configured such that the thickness of the 3D mesh fabric is 3-5mm.

[0023] The invention is further configured such that the connecting strips within the 3D mesh fabric are spaced apart, and the connecting strips are arranged in an oblique, staggered or regular pattern.

[0024] In summary, the beneficial effects achieved by this invention are as follows:

[0025] (1) An intermediate crack-resistant layer is formed by combining 3D mesh fabric and epoxy resin filler. The 3D mesh fabric serves as the skeleton, and the cured epoxy resin has excellent structural strength. Furthermore, because the filler fills the gaps within the 3D mesh fabric, the overall structure formed by the two has higher structural strength and mechanical properties. When subjected to lateral tensile or compressive forces, the 3D mesh fabric generates lateral contractile or tensile forces due to its inherent elasticity, which assists the cured epoxy resin in counteracting the forces. When the intermediate crack-resistant layer is subjected to longitudinal forces, the 3D mesh fabric can also generate corresponding tensile forces, thereby significantly improving the crack resistance of the intermediate crack-resistant layer.

[0026] (2) Compared with the 50mm thick intermediate crack-resistant layer formed by polymer mortar or steel fiber concrete in the prior art, the thickness of the intermediate crack-resistant layer formed by the combination of 3D mesh cloth and epoxy resin filler is greatly reduced while achieving the same crack resistance effect. This not only greatly reduces the usable volume of the building and improves the space utilization rate, but also greatly reduces the weight of the intermediate crack-resistant layer and reduces the load on the building.

[0027] (3) When constructing the intermediate crack-resistant layer formed by the combination of 3D mesh cloth and epoxy resin filler, the liquid epoxy resin can quickly and without dead angles fill the 3D mesh cloth, and the upper surface can be cured into a horizontal plane by itself. Therefore, it does not require multiple people to work together, the construction steps are few, and the construction difficulty is low. In addition, the liquid epoxy resin does not require curing after filling, and its curing time is short, thereby improving the construction efficiency and shortening the construction period.

[0028] (4) Epoxy resin and modified polyester fiber are both widely used materials with low prices; and 3D mesh fabric made of modified polyester fiber has a wide range of procurement channels on the market, which can greatly reduce procurement costs and ensure a stable supply of materials during construction. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0030] Figure 1 This is a schematic diagram of an epoxy terrazzo flooring structure that includes a polymer mortar crack-resistant layer, as shown in the background art of this invention.

[0031] Figure 2 This is a schematic diagram of an epoxy terrazzo flooring structure that includes a steel fiber reinforced concrete crack-resistant layer, as shown in the background of this invention.

[0032] Figure 3 This is a schematic diagram of the structure of the epoxy terrazzo flooring containing a 3D resin mesh crack-resistant layer according to the present invention.

[0033] Figure 4 This is a top view of the 3D mesh fabric in the 3D resin mesh crack-resistant layer of the present invention during the laying process;

[0034] Figure 5 This is a side view of the 3D mesh fabric in the 3D resin mesh crack-resistant layer of the present invention during the laying process.

[0035] In the diagram: 1. Concrete base layer; 2. Intermediate crack-resistant layer; 21. 3D mesh fabric; 211. Connecting strip; 3. Epoxy terrazzo layer; 4. Separator strip; 5. Expansion joint; 6. Separation joint; 7. Primer coating. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. For ease of explanation, the terms "vertical," "horizontal," "left," "right," "upper," "lower," "inner," "outer," "bottom," etc., used in this specification to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0037] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention.

[0038] As attached Figure 3 As shown, an epoxy terrazzo flooring with a 3D resin mesh anti-crack layer includes a concrete base layer 1, an intermediate anti-crack layer 2, and an epoxy terrazzo layer 3.

[0039] The structure and construction methods of both the concrete base layer 1 and the epoxy terrazzo layer 3 are existing technologies. For example, during the construction of the epoxy terrazzo layer 3, dividing strips 4 are often arranged on the upper surface of the intermediate crack-resistant layer 2 or the concrete base layer 1 (for floors without an intermediate crack-resistant layer 2) according to the design pattern and shape requirements. Expansion joints 5 can be set between two opposing dividing strips 4. The design of the dividing strips 4 and the expansion joints 5 are existing technologies, and this invention will not elaborate on the relevant structure and construction process of the concrete base layer 1 and the epoxy terrazzo layer 3.

[0040] The concrete base layer 1 is the building base and is located at the bottom. The intermediate crack-resistant layer 2 is located between the concrete base layer 1 and the epoxy terrazzo layer 3, and plays a role in preventing the cracks in the concrete base layer 1 from spreading to the epoxy terrazzo layer 3.

[0041] In this invention, the intermediate crack-resistant layer 2 is formed by combining 3D mesh fabric 21 and epoxy resin filler.

[0042] Epoxy resin is a widely used polymer, especially in the coatings industry, that cures from a liquid to a solid state at room temperature. Epoxy resin exhibits strong adhesive properties and high adhesion to various substances. Its low shrinkage during curing (less than 2%) results in minimal internal stress, further enhancing adhesion strength. Furthermore, cured epoxy resin possesses excellent mechanical properties, ensuring superior load-bearing capacity when subjected to various structural materials. Its good elastic modulus also allows it to effectively withstand external forces.

[0043] 3D mesh fabric 21 is also a material that can be directly obtained in existing technologies. It should be clarified that 3D mesh fabric is a three-dimensional structure with a certain thickness. When subjected to pressure or tension, it will deform to a certain extent, and will rebound and recover after the pressure is removed. 3D mesh fabric 21 is available in various thicknesses on the market, and the appropriate thickness can be selected according to actual design requirements. This embodiment uses 3-5mm thick 3D mesh fabric 21 for illustration.

[0044] The function of 3D mesh fabric 21 is to provide skeletal support for epoxy resin fillers, as shown in the attached image. Figure 4-5 As shown, after the 3D mesh fabric 21 is laid out, there are numerous spaced connecting strips 211 between its upper and lower surfaces.

[0045] The connecting strip 211 can be a single straight strip or an arc-shaped strip, or it can be a strip extending horizontally inside the 3D mesh fabric 21. Furthermore, the connecting strips 211 can be arranged according to certain geometric rules, or they can be arranged at an angle and interlaced.

[0046] The 3D mesh fabric 21 is elastic, allowing it to rebound and fully recover after being stretched to a certain extent. To ultimately improve the crack resistance of the intermediate crack-resistant layer 2, the 3D mesh fabric 21 also possesses high-strength impact resistance; furthermore, the 3D mesh fabric 21 has excellent heat resistance and chemical resistance, making it compatible with epoxy resin and its curing process.

[0047] This invention selects 3D mesh fabric made of modified polyester fiber (polyester) material available on the market. This type of 3D mesh fabric 21 has abundant procurement channels, which can reduce procurement costs and ensure a stable supply of 3D mesh fabric 21 during construction.

[0048] As attached Figure 3-5 As shown, during the actual construction of the intermediate crack-resistant layer 2, when filling the 3D mesh fabric 21 with liquid epoxy resin, in order to prevent the epoxy resin from overflowing and flowing, a dividing strip 4 is pre-set around the laying area of ​​the intermediate crack-resistant layer 2.

[0049] The separator 4 is a commonly used component in this field, and its height is not less than the thickness of the 3D mesh fabric 21. The bottom of the separator 4 is fixed to the upper surface of the concrete base 1 by adhesive bonding, and the two separators 4 that are in contact with each other are bonded and fixed together, thereby forming a ring-shaped area on the upper surface of the concrete base 1.

[0050] After the 3D mesh fabric 21 is laid to cover the annular area enclosed by the separator strips 4, liquid epoxy resin can be injected into the 3D mesh fabric 21. Once the liquid epoxy resin cures, it becomes the epoxy resin filler described in this invention. Because the liquid epoxy resin is bounded by the separator strips 4, the epoxy resin filler not only completely fills the voids inside the 3D mesh fabric 21, but also wraps around the 3D mesh fabric 21 at its boundaries, thus fusing the epoxy resin filler and the 3D mesh fabric 21 into a single unit. At this point, the epoxy resin filler is in full contact with each connecting strip 211 in the 3D mesh fabric 21, as well as the upper and lower surfaces and four sides, significantly improving stress resistance.

[0051] To avoid wasting raw materials, when injecting liquid epoxy resin into the 3D mesh fabric 21, the liquid level of the epoxy resin should be flush with the upper surface of the 3D mesh fabric 21. Therefore, the cured epoxy resin filler has the same thickness as the 3D mesh fabric 21.

[0052] Specifically, in the construction process of the flooring in this invention, a primer is first applied to the concrete base layer 1 before the intermediate crack-resistant layer 2 is laid. That is, a primer layer 7 is also provided between the concrete base layer 1 and the intermediate crack-resistant layer 2. The primer layer 7 in this invention is epoxy resin, which has the function of enhancing the integrity between the concrete base layer and the intermediate crack-resistant layer 2.

[0053] The specific construction method for the above-mentioned epoxy terrazzo flooring includes the following steps:

[0054] S1. Repair and clean any protrusions and pits on the upper surface of the concrete base layer 1 to ensure that the upper surface of the concrete base layer 1 is level and clean. For larger local protrusions or depressions, they can be chiseled flat or filled. After cleaning the surface debris and dust, a floor grinder can be used to grind the upper surface of the concrete base layer 1 until it is smooth.

[0055] S2. Divider strips 4 are laid along the edge of the upper surface of the concrete base layer 1. The bottom of the divider strips 4 is fixed to the concrete base layer 1 with adhesive, and the two divider strips 4 that are in contact with each other on the sides are also bonded and fixed to each other, so that the annular space enclosed by all the divider strips 4 is sealed. The shape of this annular space is adapted to the site conditions or design requirements, such as being rectangular, square, or circular.

[0056] S3. A layer of liquid epoxy resin is applied to the upper surface of the concrete base layer 1 within the annular space enclosed by the separator strip 4 to form a base coating 7.

[0057] S4. Before the liquid epoxy resin of the base layer 7 dries, lay the 3D mesh fabric 21 flat on the liquid epoxy resin layer and press it down. During this process, a certain amount of pressure can be applied manually to the 3D mesh fabric 21 to ensure that the 3D mesh fabric 21 is completely unfolded and flattened, and that the 3D mesh fabric 21 is in full contact with the base layer 7. It should be noted that the 3D mesh fabric 21 must completely cover the annular space enclosed by the separator strip 4.

[0058] S5. After the liquid epoxy resin of the base coating 7 dries, fill the 3D mesh cloth 21 with liquid epoxy resin until the liquid surface of the epoxy resin is level with the upper surface of the 3D mesh cloth 21.

[0059] Liquid epoxy resin typically dries completely within 24 hours. During the filling process, the liquid epoxy resin, bounded by the separator strip 4, can quickly and completely fill the internal space and six surfaces of the 3D mesh fabric 21, thus requiring fewer people to work together, reducing the number of construction steps, and simplifying the construction process.

[0060] S6. After the liquid epoxy resin in the 3D mesh 21 has cured, lay the epoxy terrazzo layer 3 on top of the intermediate crack-resistant layer 2 formed by the 3D mesh 21 and the epoxy resin filler. Typically, the curing time of the liquid epoxy resin is 24 hours, and no additional curing is required during or after curing. Compared to existing technologies, this significantly improves construction efficiency and shortens the construction period.

[0061] Under its own weight, the upper surface of the liquid epoxy resin can remain horizontal. After curing, the upper surface of the epoxy resin filler is also horizontal. Therefore, no leveling operation is required before starting the construction of the epoxy terrazzo layer 3. The epoxy terrazzo layer 3 and its construction method are existing technologies, and will not be described in detail here.

[0062] The intermediate crack-resistant layer 2 in this invention, formed by the fusion of 3D mesh fabric 21 and epoxy resin filler, possesses excellent structural strength and mechanical properties. Therefore, compared to the 50mm thick intermediate crack-resistant layer 2 formed by polymer mortar or steel fiber reinforced concrete in existing technologies, its thickness can be significantly reduced while achieving the same crack resistance, thereby significantly reducing the building volume occupied and greatly improving space utilization.

[0063] In reality, the intermediate crack-resistant layer 2 of the floor may be subjected to forces from both the horizontal and vertical directions. The horizontal forces can be further subdivided into transverse tensile stress and transverse compressive stress.

[0064] When subjected to horizontal forces, traditional polymer mortar or steel fiber reinforced concrete pads will break through their own limits to release stress as the stress increases. Especially when subjected to transverse compressive stress, the cracked pads cannot move horizontally, but can only move vertically to create a height difference, which can easily lead to cracking of the upper epoxy terrazzo layer 3.

[0065] In this invention, the 3D resin mesh anti-crack layer formed by the 3D mesh fabric 21 and epoxy resin filler, when subjected to horizontal forces, not only can the mechanical properties of the epoxy resin filler itself resist stress, but the elastic 3D mesh fabric 21 can also generate a transverse contraction or compression force originating from within the anti-crack layer in the horizontal direction. This can offset part of the transverse stress, thereby reducing the transverse stress on the anti-crack layer itself. Furthermore, even if the transverse stress exceeds the bearing capacity limit of the epoxy resin filler and the epoxy resin filler cracks, while the cracked epoxy resin filler releases stress, the 3D mesh fabric 21 also has the function of gathering and wrapping the broken epoxy resin filler, firmly fixing the cracked epoxy resin filler to the anti-crack layer, preventing it from shifting, and minimizing its impact on the upper epoxy terrazzo layer 3.

[0066] Similarly, when subjected to a vertical force, the 3D mesh fabric 21 can also generate longitudinal contraction or compression forces in the vertical direction, reducing the longitudinal stress on the crack-resistant layer itself. Furthermore, when the longitudinal stress exceeds the bearing capacity limit of the epoxy resin filler and the epoxy resin filler cracks, the 3D mesh fabric 21 can also gather and wrap the broken epoxy resin filler to prevent it from shifting.

[0067] The present invention verifies the actual crack resistance effect of the 3D resin mesh crack-resistant layer formed by 3D mesh fabric 21 and epoxy resin filler through the following experimental steps (the experimental method refers to GB / T 50081-2019, standard for test methods of physical and mechanical properties of concrete).

[0068] 1. Make three types of templates, each 150mm long and wide, with a thickness of 50mm for polymer mortar, 50mm for steel fiber concrete, and 5mm for 3D resin mesh. Make 5 templates of each type.

[0069] It should be noted that the 3D resin mesh template can be obtained by following the construction method described in this application; while the methods for making polymer mortar templates and steel fiber concrete templates are existing technologies.

[0070] 2. After the three types of samples were prepared, they were cured for 7 days. Before the start of the experiment, the samples were placed in a sample room with a temperature of 20℃±2℃ and a relative humidity of 50% for two days.

[0071] 3. Place the sample horizontally and use an electronic tensile and compression testing machine to perform tensile and compression tests on the sample.

[0072] 4. Place the sample vertically and increase the pressure at a rate of 0.5 MPa / second until the sample breaks visibly.

[0073] 5. Record the tensile strength value of each sample at the time of fracture and the tensile value of each sample during the tensile process. All data are taken as the average value of 5 samples.

[0074] The data recorded during the compression test of the horizontally placed sample are shown in the table below:

[0075]

[0076] The data recorded during the compression test of the vertically placed sample are shown in the table below:

[0077]

[0078] Therefore, regardless of the horizontal or vertical direction, the 3D resin mesh template formed by 3D mesh cloth and epoxy resin filler in this invention still has a much higher actual compressive strength than traditional polymer mortar templates and steel fiber concrete templates, even with a significantly reduced template thickness.

[0079] The data recorded during the tensile test of the horizontally placed sample are shown in the table below:

[0080]

[0081] Since the polymer mortar sample fractured under 4.17 MPa, a tensile force of 4 MPa was used as the benchmark for easy comparison. Under the same force, the polymer mortar sample produced a tensile value of 0.15 mm, the steel fiber reinforced concrete sample produced only 0.01 mm, and the 3D resin mesh sample produced no tensile value at all under tensile forces below 10 MPa.

[0082] Therefore, it can be seen that the 3D resin mesh template formed by 3D mesh cloth and epoxy resin filler in this invention can still withstand a much higher tensile force than traditional polymer mortar templates and steel fiber concrete templates, even with a significantly reduced template thickness, and the resulting tensile value is much smaller than that of traditional polymer mortar templates and steel fiber concrete templates.

[0083] Therefore, the crack resistance of the intermediate crack-resistant layer formed by 3D mesh and epoxy resin filler is far superior to that of traditional polymer mortar crack-resistant layers and steel fiber reinforced concrete crack-resistant layers.

[0084] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention. Clearly, those skilled in the art can make various alterations and modifications to the invention without departing from its spirit and scope. Thus, if these modifications and modifications of the invention fall within the scope of the claims and their equivalents, the invention is also intended to include these modifications and modifications.

Claims

1. A construction method for an epoxy terrazzo floor including a 3D resin mesh crack-resistant layer, characterized in that, Includes the following steps: S1. Repair and clean the protrusions and pits on the upper surface of the concrete base to make the upper surface of the concrete base level and clean. S2. Install partition strips along the edge of the upper surface of the concrete base layer, and bond and fix the two partition strips that are in contact with each other to seal the annular space enclosed by all the partition strips. S3. Apply a layer of liquid epoxy resin to the upper surface of the concrete base layer within the annular space enclosed by the separator strip to form a base coating. S4. Before the liquid epoxy resin of the base layer dries, lay the 3D mesh cloth flat on the liquid epoxy resin layer and press it flat so that the 3D mesh cloth is in full contact with the base layer and the 3D mesh cloth fills the annular space enclosed by the separator strip. S5. After the liquid epoxy resin of the base coating has dried, fill the 3D mesh with liquid epoxy resin until the liquid surface of the epoxy resin is level with the upper surface of the 3D mesh. S6. After the liquid epoxy resin in the 3D mesh has cured, lay an epoxy terrazzo layer on top of the intermediate crack-resistant layer formed by the 3D mesh and epoxy resin filler.

2. The construction method of the epoxy terrazzo flooring including the 3D resin mesh crack-resistant layer according to claim 1, characterized in that, In step S2, the bottom of the separator strip is fixed to the concrete base layer with adhesive.

3. The construction method of the epoxy terrazzo flooring including the 3D resin mesh crack-resistant layer according to claim 1, characterized in that, The 3D mesh fabric is elastic and has multiple connecting strips between its upper and lower surfaces.

4. The construction method of the epoxy terrazzo flooring including the 3D resin mesh crack-resistant layer according to claim 1 or 3, characterized in that, The 3D mesh fabric is made of modified polyester fiber material.

5. The construction method of the epoxy terrazzo flooring including the 3D resin mesh crack-resistant layer according to claim 1, characterized in that, The thickness of the 3D mesh fabric is 3-5mm.

6. An epoxy terrazzo flooring comprising a 3D resin mesh crack-resistant layer, comprising a concrete base layer, an intermediate crack-resistant layer, and an epoxy terrazzo layer, wherein the intermediate crack-resistant layer is located between the concrete base layer and the epoxy terrazzo layer, characterized in that, The intermediate crack-resistant layer is formed by a combination of 3D mesh fabric and epoxy resin filler. The upper and lower surfaces of the 3D mesh fabric have multiple connecting strips and the 3D mesh fabric is elastic. The epoxy resin filler wraps around the 3D mesh fabric and completely fills the gaps inside the 3D mesh fabric. The epoxy resin filler and the 3D mesh fabric have the same thickness and are integrated into one.

7. The epoxy terrazzo flooring comprising a 3D resin mesh crack-resistant layer according to claim 6, characterized in that, It also includes a base coat layer located between the concrete base layer and the intermediate crack-resistant layer, which is made of epoxy resin.

8. The epoxy terrazzo flooring comprising a 3D resin mesh crack-resistant layer according to claim 6, characterized in that, The 3D mesh fabric is made of modified polyester fiber material.

9. The epoxy terrazzo flooring comprising a 3D resin mesh crack-resistant layer according to claim 6, characterized in that, The thickness of the 3D mesh fabric is 3-5mm.

10. The epoxy terrazzo flooring comprising a 3D resin mesh crack-resistant layer according to claim 6, characterized in that, The connecting strips within the 3D mesh fabric are spaced apart, and the connecting strips are arranged in an oblique, staggered, or regular pattern.

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