Prefabricated epoxy millstone system construction method and application

Abstract

The invention belongs to the technical field of building decoration, and particularly relates to a construction method and application of a prefabricated epoxy millstone system. The invention provides a prefabricated epoxy millstone system construction method which comprises the following steps: (1) modeling a construction area by using a BIM technology to determine construction parameters and parameters of a prefabricated epoxy millstone plate, and preparing the prefabricated epoxy millstone plate; (2) laying a cushion layer on the base layer of the construction area; the flatness error of the cushion layer is less than or equal to 3mm; (3) paving a prefabricated epoxy millstone plate on the cushion layer by adopting a thin pasting method to form an epoxy millstone surface layer; the flatness error of the epoxy millstone surface layer is smaller than or equal to 2 mm, and the straight deviation of a joint is smaller than or equal to 2 mm. According to the construction method of the prefabricated epoxy millstone system, the prefabricated construction condition is met, inconvenience and pollution caused by site construction are reduced, the construction time and cost are saved, and the working procedure is simple.

Description

Technical Field

[0001] The invention belongs to the technical field of building decoration, and in particular relates to a construction method and application of a prefabricated epoxy terrazzo system. Background Art

[0002] Epoxy terrazzo is an environmentally friendly material that is made by mixing aggregate and high-molecular epoxy resin and then processing it through more than ten processes such as on-site laying, leveling, coarse grinding, medium grinding, fine grinding, and polishing. Common aggregates include recycled glass, quartz stone, ceramics, pebbles, etc. The resulting epoxy terrazzo has the characteristics of light weight, high strength, wear resistance, corrosion resistance and seamlessness; specifically, the wear resistance and corrosion resistance of epoxy terrazzo make it suitable for various public places with large traffic flow and frequent cleaning and washing; its seamless performance makes epoxy terrazzo not easy to breed bacteria and easy for daily maintenance; its light weight and high strength reduce the load-bearing requirements of floor paving and facilitate paving.

[0003] At present, common epoxy terrazzo floors are cast-in-place epoxy terrazzo. During the construction process, after the aggregate and high molecular epoxy resin are mixed according to the ratio, paving, compaction and vibration construction are carried out. There are many types of aggregates required, and there are problems such as complex procedures, long construction period, large area occupied, frequent grinding causing noise pollution and water pollution. It is time-consuming and labor-intensive and is not conducive to green construction and assembly construction. Therefore, it is necessary to provide a prefabricated epoxy terrazzo system construction method and application that can reduce the number of grinding times to reduce pollution, simplify the process, save costs, shorten the construction period and improve the performance of epoxy terrazzo. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art such as complex process, long construction period, large floor space, noise and water pollution caused by frequent grinding, and high cost of cast-in-place epoxy terrazzo, thereby providing a prefabricated epoxy terrazzo system construction method and application.

[0005] To this end, the present invention provides the following technical solutions.

[0006] The present invention provides a prefabricated epoxy terrazzo system construction method, comprising the following steps:

[0007] (1) Use BIM technology to model the construction area, determine the construction parameters and parameters of prefabricated epoxy terrazzo slabs, and prepare prefabricated epoxy terrazzo slabs;

[0008] The construction parameters include the flatness of the underlying structure, the thickness of the cushion layer, the outline of the construction site, the size of the construction site, the azimuth of the construction site, and other parameters, i.e., the parameters commonly used in daily construction that need to be limited, including but not limited to those mentioned in the preceding item.

[0009] (2) Laying a cushion layer on the base of the construction area; the flatness error of the cushion layer shall be ≤3mm;

[0010] (3) a prefabricated epoxy terrazzo plate is laid on the cushion layer by a thin-lamination method to form an epoxy terrazzo surface layer; the flatness error of the epoxy terrazzo surface layer is ≤2 mm, and the straightness deviation of the joint is ≤2 mm; wherein at least one surface of the prefabricated epoxy terrazzo plate is provided with a fiber layer; the prefabricated epoxy terrazzo plate is provided with a protective layer, and the protective layer is provided on at least one surface of the prefabricated epoxy terrazzo plate;

[0011] Preferably, the protective layer is arranged on at least one surface of the prefabricated epoxy terrazzo plate; the prefabricated epoxy terrazzo plate is preferably protected on six sides, that is, the six surfaces of the prefabricated epoxy terrazzo plate are all provided with a protective layer, and the protective layer is arranged between the fiber layer and the surface of the epoxy terrazzo plate.

[0012] Preferably, the fixing method of the prefabricated epoxy terrazzo plate and the fiber layer includes gluing;

[0013] Preferably, the adhesive agent includes a special interface agent for artificial boards;

[0014] The raw materials of the prefabricated epoxy grindstone plate include glass particles, natural sand, polymer resin, natural powder and pigment.

[0015] In an optional embodiment, the mass ratio of the glass particles, natural sand, polymer resin, natural powder and pigment is (15-35): (35-60): (5-25): (3-30): (0.5-0.7);

[0016] The purpose of adding natural powder is to mix it with polymer resin as a powder filler to play a filling and curing role.

[0017] In an optional embodiment, the natural powder includes at least one of quartz stone powder and white silicate cement; the quartz stone powder and white silicate cement are crushed into powder;

[0018] In an optional embodiment, the average particle size of the glass particles is 5-10 mm;

[0019] In an optional embodiment, the average particle size of the natural sand is 2-4 mm;

[0020] In an optional embodiment, the polymer resin includes bisphenol A epoxy resin;

[0021] In an optional embodiment, the pigment is a pigment that colors well at 180-400° C.; the pigment comprises a synthetic iron oxide pigment.

[0022] The step (1), before using BIM technology to model the construction area and determine the construction parameters, also includes: scanning the construction area to obtain three-dimensional data;

[0023] The prefabricated epoxy terrazzo plate includes any shape such as standard plate, non-standard plate, special-shaped plate, etc.

[0024] In an optional embodiment, the flatness error of the cushion layer is monitored by at least one method selected from the group consisting of dot punching, level monitoring during construction, and level control during finishing.

[0025] Preferably, the light collecting step includes collecting light by vibrating a leveling ruler;

[0026] Preferably, the vibrating ruler comprises a 2m fuel-powered vibrating ruler;

[0027] Preferably, the cushion layer is formed by vibration; specifically, the specific steps of laying the cushion layer include: pouring the cushion layer, cutting the seams, and vibrating to form the cushion layer; the cushion layer is a concrete layer; preferably, the concrete layer includes concrete and steel mesh; the thickness of the cushion layer is 70-75mm; the strength of the concrete is not less than C25, preferably at least one of C25 fine stone concrete and C30 fine stone concrete, which can not only ensure the strength of the concrete, but also avoid uneven heat dissipation during the pouring process, resulting in dark lines and cracks in the concrete cushion layer. The steel mesh includes a 4-6mm diameter bidirectional @200-300mm steel mesh;

[0028] Preferably, the frequency of the vibration is 120-150 Hz, and the residence time of the vibration is 5-8 s;

[0029] Preferably, the cushion layer is provided with an expansion joint;

[0030] Preferably, the position of the expansion joint satisfies at least one of the following AD items:

[0031] A. Expansion joints are set at the deformation joints of the original building structure;

[0032] B. When the construction site is a walkway, expansion joints are set every 8-12m in the walkway area;

[0033] C. When the construction site is a large-span room, expansion joints are set every 8-10m square in the large-span room;

[0034] D. The expansion joint cannot be set on the door and / or ground evacuation indicator light.

[0035] Preferably, the depth of the expansion joint is ≥50 mm;

[0036] Preferably, after laying the cushion layer, a curing step of 7-10 days is also included. Preferably, the curing includes at least one of using a full-coverage moisture blanket and sprinkling water.

[0037] In an optional embodiment, the step (3) is to form the epoxy terrazzo surface layer by a full-length paving method;

[0038] The full-length paving means: paving a reference line along the long direction of the construction direction, and then paving in sequence along the square long lines in the long direction.

[0039] In an optional embodiment, the specific steps of laying the epoxy terrazzo surface layer include: first laying standard boards, and then laying non-standard boards and special-shaped boards by a dedicated person; the purpose is to complete large-area construction to form a construction surface layer, thereby reducing the construction site occupation time;

[0040] Preferably, at least one of a level meter, setting elevation fixed points in different areas, a vibrator and spot check control is used to monitor the flatness error and joint straightness deviation of the epoxy terrazzo surface layer;

[0041] The said setting of elevation fixed points in different regions means: setting one or more elevation reference points in a certain area and pulling a line to control the elevation;

[0042] The level meter refers to: setting elevation fixed points in different areas and using the level meter to monitor the elevation;

[0043] Preferably, the point spot check control includes at least one of a ruler spot check and a feeler gauge spot check;

[0044] Preferably, the surface of the fiber layer is fully coated with adhesive to form an adhesive layer, and the prefabricated epoxy terrazzo plate is bonded to the cushion layer to form an epoxy terrazzo surface layer;

[0045] Preferably, the thickness of the adhesive on the surface of the fiber layer is 5-10 mm;

[0046] Preferably, the amount of the adhesive is 6-12 kg / m 2 .

[0047] In an optional embodiment, the step (3) further comprises a step of curing for no less than 7 days after the paving is completed;

[0048] Preferably, the curing is carried out at room temperature;

[0049] Preferably, the curing shall not cover any material;

[0050] Preferably, the epoxy terrazzo surface layer is provided with expansion joints;

[0051] Preferably, the filling material of the expansion joint is stainless steel.

[0052] In an optional embodiment, the material of the fiber layer includes a reinforced fiber mesh;

[0053] The parameters of the reinforced fiber mesh include: unit weight of 160-170g / m 2 , the mesh size is 5×5mm, the width is ≤2000mm, and the length is 50-300m; the alkali-resistant tensile breaking strength in the warp and weft directions is ≥1250N / 50mm; the alkali-resistant tensile strength retention rate is ≥90%;

[0054] In an optional embodiment, the material of the protective layer includes organic silicon oligomer;

[0055] In an optional embodiment, the step (3) further includes a step of polishing no more than 3 times;

[0056] Preferably, the step (3) includes a first grinding and a second grinding;

[0057] Preferably, the first polishing is performed by 200-300 mesh resin polishing;

[0058] Preferably, the second polishing adopts 800-1000 mesh resin polishing.

[0059] The purpose of the first grinding is to grind and level the cuts, unevenness and scratches caused by deformation, paving and other reasons on the epoxy terrazzo surface layer during construction;

[0060] The purpose of the second grinding is to eliminate the scratches left by the first grinding and further improve the flatness of the epoxy terrazzo surface.

[0061] Preferably, at least one of (1)-(2) is also included:

[0062] (1) The polishing process includes the steps of cutting and caulking;

[0063] (2) The polishing step includes a crystallization step.

[0064] Preferably, the specific steps of cutting the seams include: using a marble machine with a slicer to cut seams between prefabricated epoxy grindstone plates and cleaning dust; applying a protective agent to the seams and performing a fourth curing; the fourth curing time is 24-36 hours; the width of the seams is 2-3mm, and the depth of the seams is 20-25mm.

[0065] The purpose of the slit is to clean the residual adhesive, dust and garbage between the prefabricated epoxy terrazzo plates to facilitate subsequent construction. The slit will damage the protective layer of the epoxy terrazzo plate, and a protective agent needs to be applied. The protective agent includes an organic silicon protective agent, and the number of times the protective agent is applied is at least twice; the time interval between two adjacent applications of the protective agent is not less than 30 minutes.

[0066] Preferably, the specific steps of caulking include: preparing a glue sample with the same color as the prefabricated epoxy terrazzo plate, adding filler until the glue sample stops flowing, scraping left and right at the same time and pressing the glue sample downward into the joint, stopping scraping after the glue sample is 1-2mm higher than the prefabricated epoxy terrazzo plate, scraping off the glue sample remaining in other areas of the prefabricated epoxy terrazzo plate except the joint; and performing the fifth curing.

[0067] Preferably, the glue sample comprises a polymer epoxy resin;

[0068] Preferably, the filler comprises stone powder;

[0069] The filler material is consistent with the color of the prefabricated epoxy terrazzo plate.

[0070] In an optional embodiment, the specific steps of the crystallization construction include: pouring the crystallization liquid on the epoxy terrazzo surface layer, grinding with a grinding disc, cleaning the epoxy terrazzo surface layer after grinding, and polishing;

[0071] The crystallization liquid is a mixture of crystal powder and water;

[0072] Preferably, the crystallized powder includes crystal hardening powder, acidifying agent, high gloss resin and polishing powder;

[0073] During the crystallization process, when the crystallization liquid effect becomes worse, an appropriate amount of crystallization powder should be added in time to ensure the grinding effect;

[0074] The invention also provides an application of the system construction method in the ground, steps, threshold stones or water stop sills.

[0075] The technical solution of the present invention has the following advantages:

[0076] 1. The prefabricated epoxy terrazzo system construction method provided by the present invention comprises: (1) using BIM technology to model the construction area to determine the construction parameters, and preparing prefabricated epoxy terrazzo plates; (2) laying a cushion layer on the base of the construction area; the flatness error of the cushion layer is ≤3mm; (3) using a thin pasting method to lay the prefabricated epoxy terrazzo plate on the cushion layer to form an epoxy terrazzo surface layer; the flatness error of the epoxy terrazzo surface layer is ≤2mm, and the straight deviation of the joint is ≤2mm; wherein at least one surface of the epoxy terrazzo plate is provided with a fiber layer; the epoxy terrazzo plate is provided with a protective layer, and the protective layer is provided on at least one surface of the epoxy terrazzo plate; the raw materials of the prefabricated epoxy terrazzo plate include glass particles, natural sand, polymer resin, natural powder and pigment. The prefabricated epoxy terrazzo system construction method provided by the present invention meets the conditions of assembly construction, reduces the inconvenience and pollution caused by on-site construction, saves construction time and construction costs, and has simple procedures.

[0077] The invention has the following advantages in preparing prefabricated epoxy terrazzo slabs: (1) cost saving. Unlike cast-in-place epoxy terrazzo, which must occupy a site to mix dry hard cement mortar, when prefabricating epoxy terrazzo slabs, the construction site can simultaneously carry out cushion construction, effectively shortening the construction period and reducing the cost by about 10.33%; (2) pollution reduction. The invention uses BIM modeling, prefabricated epoxy terrazzo slabs, and control of the flatness error of the cushion layer ≤3mm, the flatness error of the epoxy terrazzo surface layer ≤2mm, and the straightness deviation of the joint ≤2mm. In the end, only the construction site needs to be cast. The flatness requirement can be achieved by grinding twice, which effectively reduces the dust, noise pollution and water pollution caused by grinding 5-6 times in the prior art; it also avoids the dust, noise and water pollution caused by mixing dry hard cement mortar on site; (3) The performance is better. Compared with the traditional cast-in-place epoxy terrazzo, the prefabricated epoxy terrazzo board prepared by the present invention has higher wear resistance and Shore hardness, and its volume density is lower than the volume density of marble, which can effectively reduce the floor load; (4) Different patterns, colors, sizes and shapes can also be customized according to needs, which is beautiful and generous.

[0078] 2. The prefabricated epoxy terrazzo system construction method provided by the present invention scans the construction area to not only determine the relevant parameters of the prefabricated epoxy terrazzo plate, but also determine the requirements of the relevant structural flatness, cushion construction thickness, etc. For example, if the cushion construction thickness determined after scanning is thin, high-strength, high-grade concrete can be used for construction to ensure strength; if the cushion construction thickness determined after scanning is thick, it can be poured in layers and batches, vibrated and compacted, and thickened with internal steel mesh to prevent cracking of the concrete cushion; by scanning the construction area to select different construction methods, the construction efficiency and construction quality can be effectively improved;

[0079] At least one surface of the prefabricated epoxy terrazzo plate is provided with a fiber layer; the prefabricated epoxy terrazzo plate is provided with a protective layer, and the protective layer is provided on at least one surface of the prefabricated epoxy terrazzo plate; the problems of whitening, water spots, rust spots, alkali efflorescence and hollowing of the prepared prefabricated epoxy terrazzo plate during the paving process can be prevented, thereby reducing quality risks and reducing the repair and replacement rate of the plate; the prefabricated epoxy terrazzo plate is paved with an adhesive, and the setting time of the adhesive is shorter than that of the traditional dry hard cement mortar, thereby effectively shortening the construction period;

[0080] The present invention controls the overall flatness error of the cushion layer to be no more than 3 mm. Specifically, (1) when monitoring with a spirit level, the vibration frequency and vibration residence time of the inserted concrete vibrator should be controlled to prevent excessive vibration of the concrete from causing sand and shelling of the cushion layer, thereby ensuring the flatness and density of the cushion layer and reducing the risk of settlement and cracks in the cushion layer. (2) When monitoring through the finishing process, the air in the cushion layer can be further squeezed and removed to enhance the density of the cushion layer. Spot checks can also be carried out, and methods such as local grinding and patching can be used to further control the overall balance error.

[0081] The surface flatness deviation and joint straightness deviation of the epoxy terrazzo surface layer are controlled by a vibrator. The rapid vibration of the vibrator makes the adhesive on the prefabricated epoxy terrazzo plate evenly distributed, improves the paving flatness, and reduces the hollowing rate. The full-length paving is conducive to controlling the joint straightness deviation and square angle. The type of concrete includes at least one of C25 fine stone concrete and C30 fine stone concrete. The concrete strength is too high, and uneven heat dissipation during construction is prone to cause dark lines, cracks and other safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0082] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0083] Figure 1 It is a node diagram of the prefabricated epoxy terrazzo assembled floor prepared in Example 1 of the present invention;

[0084] Figure 2 is a node diagram of the prefabricated epoxy terrazzo assembled step prepared in Example 2 of the present invention;

[0085] Figure 3 It is a node diagram of the prefabricated epoxy terrazzo assembled water stop prepared in Example 3 of the present invention;

[0086] Reference numerals:

[0087] 1- Prefabricated epoxy terrazzo surface layer; 2- Adhesive layer; 3- Pad layer; 4- Steel mesh; 5- Anti-slip groove; 6- Prefabricated epoxy terrazzo threshold stone; 7- Fine stone concrete waterstop. DETAILED DESCRIPTION

[0088] The following examples are provided for a better understanding of the present invention, but are not intended to limit the best mode of implementation, nor to limit the content and protection scope of the present invention. Any product identical or similar to the present invention obtained by anyone under the inspiration of the present invention or by combining the features of the present invention with other prior arts shall fall within the protection scope of the present invention.

[0089] If no specific experimental steps or conditions are specified in the examples, the conventional experimental steps or conditions described in the literature in the field can be used. If no manufacturer is specified for the reagents or instruments used, they are all conventional reagent products that can be obtained commercially.

[0090] The prior art method of pouring epoxy terrazzo floor has many time-consuming and labor-intensive problems such as long cycle, complicated process, multiple grinding times, etc. In order to solve the problems of the prior art, the present invention provides the following technical solutions.

[0091] The present invention provides a prefabricated epoxy terrazzo system construction method, comprising the following steps:

[0092] (1) Scan the construction area, model the construction area using BIM technology to determine the construction parameters and the parameters of the prefabricated epoxy terrazzo plate, and prepare the prefabricated epoxy terrazzo plate. The construction parameters include common parameters in daily construction, such as the flatness of the underlying structure, the thickness of the cushion construction, the site contour, the site size, the site azimuth, etc.; this step does not require on-site measurement, and the production of the prefabricated epoxy terrazzo plate construction link is started in advance, and the plate production and construction are completely isolated, overcoming the defect of traditional construction that the construction needs to be carried out first and then the measurement and order production of the plate, resulting in a long construction period. The preparation method of the prefabricated epoxy terrazzo plate comprises: mixing glass particles, natural sand, polymer resin, natural powder and pigment according to a mass ratio of (15-35): (35-60): (5-25): (3-30): (0.5-0.7), and the subsequent steps are carried out according to the conventional process in the field, and the present invention does not make any limitation.

[0093] (2) Clean the base of the construction area. The base should be free of oil stains, floating slurry and other residues. Then sprinkle plain cement slurry to moisten it. Then lay a cushion layer on the base of the construction area. Use at least one of the following methods: dot punching, level monitoring during construction, or finishing process elevation control to monitor the flatness error of the cushion layer. The flatness error of the cushion layer is ≤3mm. Plain cement slurry is pure cement slurry without any other mixed materials. The cushion layer includes concrete and a 4-6mm diameter bidirectional @200-300mm steel mesh. The steel mesh is fixed to the structural surface with a mixed cement pad. The height of the steel mesh is about 2 / 3 of the cushion layer thickness. Adjacent steel meshes overlap 200-300mm and are tied firmly with iron wire. Pour C25 fine stone concrete with a thickness of 70-75mm to form a cushion layer, and then use a polisher to finish it. The cushion layer is provided with expansion joints. The depth of the expansion joints is ≥50mm. After laying the cushion layer, it is fully covered with a moisture-retaining blanket and cured for 7-10 days.

[0094] (3) Apply silicone protective agent on the six surfaces of the prefabricated epoxy terrazzo board to set a protective layer; apply a special interface agent for artificial boards on one of the surfaces to fix the reinforcing fiber mesh to form a fiber layer; clean the cushion layer in the construction area, and the cushion layer should be free of visible water, oil stains, floating dust and other residues; apply a full batch of adhesive on the surface of the fiber layer and lay it throughout the length to form an epoxy terrazzo surface layer. The adhesive thickness is 5-10mm and the amount is 6-12kg / m 2 ; Use a spirit level, set fixed elevation points in different areas, a vibrator or spot checks to control and monitor the flatness error and joint straightness deviation of the epoxy terrazzo surface layer. The flatness error of the epoxy terrazzo surface layer is ≤2mm, and the joint straightness deviation is ≤2mm; 2mm stainless steel joints are set between prefabricated epoxy terrazzo slabs, and they are cured at room temperature without being covered with any materials for not less than 7 days.

[0095] (4) After the adhesive is completely solidified and the internal moisture is fully evaporated, use a marble machine with a slicer to cut the seams between the prefabricated epoxy terrazzo plates and clean the dust; the width of the seam is 2-3mm and the depth of the seam is 20-25mm; apply silicone protective agent to the seam at least twice, with the interval between each application not less than 30 minutes, and maintain for 24-36 hours; use high molecular epoxy resin to prepare a glue sample with the same color as the prefabricated epoxy terrazzo plate, add stone powder with the same color as the prefabricated epoxy terrazzo plate until the glue sample does not flow, scrape left and right at the same time and press the glue sample downward into the joint, and the glue sample is 1-2mm higher than the prefabricated epoxy terrazzo plate. Stop scraping, scrape off the residual glue samples in other areas of the prefabricated epoxy terrazzo plate except the joints, and cure for 24 hours; add moderate water amount, polish with 200-300 mesh resin, and use a water absorber in time during polishing to prevent moisture from penetrating into the joints; add a small amount of water, polish with 800-1000 mesh resin, and let it stand for 6 hours after polishing; mix crystallization powder and water in a mass ratio of 1:1 to obtain crystallization liquid, pour the crystallization liquid on the surface layer, grind with a scouring pad, clean the surface layer of the plate after grinding, and polish with a white polishing pad; the surface layer includes prefabricated epoxy terrazzo plate and caulking; when the effect of the crystallization liquid deteriorates, add an appropriate amount of crystallization powder in time to ensure the grinding effect.

[0096] Example 1

[0097] This embodiment provides a construction method for a prefabricated epoxy terrazzo floor system, comprising the following steps:

[0098] (1) Use a 3D scanning robot to scan the construction area to obtain three-dimensional data; use BIM technology to model the construction area to determine the construction parameters and the parameters of the prefabricated epoxy terrazzo slabs, and prepare the prefabricated epoxy terrazzo slabs according to the parameters of the prefabricated epoxy terrazzo slabs. The construction parameters include the flatness of the underlying structure, the thickness of the cushion layer, the site contour, the site size, the site azimuth, etc.; apply a protective agent (the protective agent is a silicone oligomer protective agent) on the six surfaces of the prepared prefabricated epoxy terrazzo slabs, and use a special interface agent for artificial boards to stick a fiber mesh (material: glass fiber mesh cloth) on one of the surfaces to form a fiber layer; use a total station to set the grid seams in the modeling as construction control lines;

[0099] The preparation method of the prefabricated epoxy terrazzo plate comprises: mixing glass particles (average size is 7 mm), natural sand (average size is 3 mm), bisphenol A epoxy resin, natural powder and synthetic iron oxide pigment in a mass ratio of 30:57.5:9:3:0.5, and vacuuming for 2 hours to 10 minutes. -2 Pa, 220MPa molding at 180℃, water jet cutting and grinding according to the parameters of prefabricated epoxy terrazzo slabs to obtain prefabricated epoxy terrazzo slabs. Natural powder includes quartz stone powder and powdered white silicate cement.

[0100] (2) Clean the base of the construction area. The base should be free of oil stains, floating slurry and other residues. Then sprinkle cement slurry to moisten it. Use wire to tie and fix the 4mm diameter bidirectional @200mm steel mesh 4 to 2 / 3 of the cushion thickness. Pour C25 fine stone concrete. Use an inserted concrete vibrator to vibrate at 135Hz for 6s to form a cushion 3 with a thickness of 70mm. Use a 2m fuel-powered vibrating ruler to control the elevation of the finishing process. The overall flatness error of the cushion is controlled to be ≤3mm. The cushion is designed Expansion joints are set; the depth of the expansion joints is ≥50mm, and the position of the expansion joints meets the following AD items: A. Expansion joints are set at the deformation joints of the original building structure; B. When the construction site is a walkway, expansion joints are set every 8-12m in the walkway area; C. When the construction site is a large-span room, expansion joints are set every 8-10m in the large-span room; D. The expansion joint position cannot be set on the door and the ground evacuation indicator light; After laying the cushion layer, fully cover with a moisturizing blanket and sprinkle water for maintenance for 7 days;

[0101] (3) Clean the cushion layer in the construction area. There should be no visible water, oil stains, floating dust and other residues on the cushion layer. Apply adhesive to the surface of the fiber layer to form an adhesive layer 2. Bond the prefabricated epoxy terrazzo plate to the cushion layer and lay the prefabricated epoxy terrazzo plate along the entire length according to the construction control line to form an epoxy terrazzo surface layer 1. The thickness of the adhesive on the surface of the fiber layer is 10 mm, and the amount of the adhesive is 12 kg / m 2 ; During the full-length paving, set elevation fixed points in different areas, use a level to monitor the elevation, and control the surface flatness deviation of the prefabricated epoxy terrazzo surface layer to ≤2mm; the joint straightness deviation of the prefabricated epoxy terrazzo surface layer to ≤2mm. Set a 2mm stainless steel expansion joint between the prefabricated epoxy terrazzo slabs, clean up the slurry overflowing from the expansion joint, and maintain it at room temperature for 7 days without covering it with any material.

[0102] (4) Use a marble machine with a slicer to cut seams between prefabricated epoxy terrazzo plates. The width of the seams is 2 mm and the depth is 20 mm. Use a vacuum cleaner to clean the dust in the seams. Apply silicone protective agent to the seams twice, with an interval of 30 minutes, and maintain for 24 hours. Use a polymer epoxy resin (bisphenol A epoxy resin) to prepare a glue sample with the same color as the prefabricated epoxy terrazzo plate, add stone powder with the same color as the prefabricated epoxy terrazzo plate (the volume ratio of polymer epoxy resin to stone powder is 4.5:5.5), scrape it from left to right at the same time and press the glue sample downward into the joint to ensure that the glue sample is fully bonded to the plate. Bonding, stop scraping after the glue sample is 1-2mm higher than the prefabricated epoxy grindstone plate, and maintain for 24 hours; use 200 mesh rubber-based ceramic resin grinding disc for the first grinding, and add moderate water. Use 800 mesh rubber-based ceramic resin grinding disc for the second grinding, add a small amount of water, and let it stand for 6 hours; mix crystal powder and water in a mass ratio of 1:1 to make crystal liquid, pour it on the epoxy grindstone surface, and grind it with a scouring pad. The mass ratio of hard powder, acidifier, high-gloss resin, and polishing powder in the crystal powder is 2:2:5:1; after grinding, clean the ground sewage and crystal liquid on the epoxy grindstone surface, and polish it with a white polishing pad. The time ratio of the first grinding, the second grinding, and the grinding is 6:7:7.

[0103] The node diagram of the prefabricated epoxy terrazzo assembled floor prepared in this embodiment is as follows: Figure 1 shown.

[0104] Example 2

[0105] This embodiment provides a construction method for a prefabricated epoxy terrazzo stepping system, comprising the following steps:

[0106] (1) Use a 3D scanning robot to scan the construction area to obtain three-dimensional data; use BIM technology to determine the construction parameters and parameters of the prefabricated epoxy terrazzo plate for the construction area, and prepare the prefabricated epoxy terrazzo plate according to the parameters of the prefabricated epoxy terrazzo plate and the preparation method of the epoxy terrazzo plate in Example 1. The construction parameters include the flatness of the underlying structure, the thickness of the cushion layer, the site contour, the site size, the site azimuth, etc.; apply a protective agent (the protective agent is a silicone oligomer protective agent) on the six surfaces of the obtained prefabricated epoxy terrazzo plate, and at the same time, use a special interface agent for artificial boards to stick a fiber mesh (material: glass fiber mesh cloth) on one of the surfaces to form a fiber layer; the surface of the stepping board is Figure 2 As shown, four 3×5mm anti-slip grooves 5 are processed, and the positive corner radius is 5mm rounded;

[0107] (2) Clean the base of the construction area. The base should be free of oil stains, floating slurry and other residues. Then sprinkle cement slurry to moisten it. Use wire to tie and fix the 4mm diameter bidirectional @200mm steel mesh 4 to 2 / 3 of the cushion thickness. Pour C25 fine stone concrete. Use an inserted concrete vibrator to vibrate at 140Hz for 5s to form a cushion 3 with a thickness of 70mm. Use a 2m fuel-powered vibrating ruler to control the elevation of the finishing process. The finishing elevation controls the overall flatness error of the cushion to ≤3mm. Expansion joints are provided; the depth of the expansion joints is ≥50mm, and the position of the expansion joints meets the following AD items: A. Expansion joints are provided at the deformation joints of the original building structure; B. When the construction site is a walkway, expansion joints are provided every 8-12m in the walkway area; C. When the construction site is a large-span room, expansion joints are provided every 8-10m in the large-span room; D. The expansion joints cannot be provided on the door and the ground evacuation indicator light; After laying the cushion layer, the whole layer is covered with a moisture-retaining blanket and watered for 8 days;

[0108] (3) Clean the cushion layer in the construction area. There should be no visible water, oil stains, floating dust and other residues on the cushion layer. Apply adhesive to the surface of the fiber layer to form an adhesive layer 2. Bond the prefabricated epoxy terrazzo plate to the cushion layer and lay the prefabricated epoxy terrazzo plate along the entire length according to the construction control line to form an epoxy terrazzo surface layer 1. The thickness of the adhesive on the surface of the fiber layer is 10 mm, and the amount of the adhesive is 12 kg / m 2 During the full-length paving, the elevation is monitored by using a special stone paving vibration machine to control the surface flatness deviation of the prefabricated epoxy terrazzo surface layer to be ≤2mm; the joint straightness deviation of the prefabricated epoxy terrazzo surface layer is ≤2mm. A 2mm stainless steel expansion joint is laid between the prefabricated epoxy terrazzo slabs, the slurry overflowing from the expansion joint is cleaned, and it is cured at room temperature for 7 days without covering with any material.

[0109] (4) Use a marble machine with a slicer to cut seams between prefabricated epoxy terrazzo plates. The width of the seams is 2 mm and the depth is 20 mm. Use a vacuum cleaner to clean the dust in the seams. Apply silicone protective agent to the seams twice, with an interval of 40 minutes, and maintain for 24 hours. Use a polymer epoxy resin (bisphenol A epoxy resin) to prepare a glue sample with the same color as the prefabricated epoxy terrazzo plate, add stone powder and mix (the volume ratio of polymer epoxy resin and stone powder is 4.5:5.5), scrape left and right at the same time and press the glue sample downward into the joint to make the glue sample fully bonded to the plate. The glue sample is higher than the prefabricated epoxy Stop scraping after the grinding stone plate is 1-2mm, and cure for 24 hours; use a handheld angle grinder for the first grinding, install a 200-mesh rubber-based ceramic resin grinding disc, and add moderate water. Install an 800-mesh rubber-based ceramic resin grinding disc for the second grinding, add a small amount of water, and let it stand for 6 hours; mix the crystal powder and water in a mass ratio of 1:1 to make a crystal liquid, pour it on the epoxy grinding stone surface, and grind it with a scouring pad. The mass ratio of hard powder, acidifier, high-gloss resin, and polishing powder in the crystal powder is 2:2:5:1; after grinding, clean the ground sewage and crystal liquid on the epoxy grinding stone surface, and polish it with a white polishing pad. The time ratio of the first grinding, the second grinding, and the grinding is 6:7:7.

[0110] The node diagram of the prefabricated epoxy terrazzo assembled step prepared in this embodiment is as follows: Figure 2 shown.

[0111] Example 3

[0112] This embodiment provides a construction method for a prefabricated epoxy terrazzo waterstop system, comprising the following steps:

[0113] (1) Use a 3D scanning robot to scan the construction area to obtain three-dimensional data; use BIM technology to model the construction area to determine the construction parameters and the parameters of the prefabricated epoxy terrazzo plate, and prepare the prefabricated epoxy terrazzo plate according to the parameters of the prefabricated epoxy terrazzo plate and the preparation method of the epoxy terrazzo plate in Example 1. The construction parameters include the flatness of the underlying structure, the thickness of the cushion layer, the site contour, the site size, the site azimuth, etc.; apply a protective agent (the protective agent is a silicone oligomer protective agent) on the 6 surfaces of the prepared prefabricated epoxy terrazzo plate, and at the same time, use a special interface agent for artificial boards to stick a fiber mesh (material: glass fiber mesh cloth) on one of the surfaces to form a fiber layer; the surface of the prefabricated epoxy terrazzo threshold stone 6 is as shown in FIG. Figure 3 The slope surface is processed as shown, and the positive corner radius is 5mm;

[0114] (2) Clean the base of the construction area. The base should be free of oil stains, floating slurry and other residues. Then sprinkle cement slurry to moisten it. Use an inserted concrete vibrator to vibrate at 120 Hz for 8 seconds to cast a 20 mm thick C25 fine stone concrete cushion layer 3 and a 20 mm thick fine stone concrete water stop 7. According to the construction parameters obtained by scanning, reserve a 20 mm construction thickness of prefabricated epoxy terrazzo threshold stone. Cut the seams according to the layout diagram, fully cover with a moisture-retaining blanket, and sprinkle water for curing for 10 days.

[0115] (3) Clean the cushion layer in the construction area. There should be no visible water, oil stains, floating dust and other residues on the cushion layer. Apply adhesive to the surface of the fiber layer to form an adhesive layer 2. Bond the prefabricated epoxy terrazzo plate to the cushion layer and lay the prefabricated epoxy terrazzo plate along the entire length according to the construction control line to form an epoxy terrazzo surface layer 1. The thickness of the adhesive on the surface of the fiber layer is 10 mm, and the amount of the adhesive is 12 kg / m 2 ; In the full-length paving, one or more elevation reference points are set in a certain area, and the elevation is controlled by drawing a line. At the same time, spot checks are carried out to control the surface flatness deviation of the prefabricated epoxy terrazzo surface layer to be ≤2mm; the joint straightness deviation of the prefabricated epoxy terrazzo surface layer is ≤2mm. 2mm stainless steel expansion joints are laid between prefabricated epoxy terrazzo slabs, and the slurry overflowing from the expansion joints is cleaned up. The expansion joints are cured at room temperature for 7 days and shall not be covered with any material.

[0116] (4) Use a marble machine with a slicer to cut seams between prefabricated epoxy terrazzo plates. The width of the seams is 2 mm and the depth is 20 mm. Use a vacuum cleaner to clean the dust in the seams. Apply silicone protective agent to the seams twice, with an interval of 30 minutes, and maintain for 24 hours. Use a polymer epoxy resin (bisphenol A epoxy resin) to prepare a glue sample with the same color as the prefabricated epoxy terrazzo plate, add stone powder (the volume ratio of polymer epoxy resin to stone powder is 4.5:5.5) and mix. Scrape the glue sample from left to right at the same time and press it downward into the joint to make the glue sample fully bonded to the plate. The glue sample is high Stop scraping after the prefabricated epoxy grindstone plate is 1-2mm thick, and cure for 24 hours; use 200-mesh rubber-based ceramic resin grinding disc for the first grinding, with moderate water supply, and use 800-mesh rubber-based ceramic resin grinding disc for the second grinding, with a small amount of water, and let it stand for 6 hours; mix crystal powder and water in a mass ratio of 1:1 to make crystal liquid, pour it on the epoxy grindstone surface, and grind it with a scouring pad. The mass ratio of hard powder, acidifier, high-gloss resin, and polishing powder in the crystal powder is 2:2:5:1; after grinding, clean the ground sewage and crystal liquid on the epoxy grindstone surface, and polish it with a white polishing pad. The time ratio of the first grinding, the second grinding, and the grinding is 6:7:7.

[0117] The node diagram of the prefabricated epoxy terrazzo assembled water stop prepared in this embodiment is as follows: Figure 3 shown.

[0118] Comparative Example 1

[0119] This comparative example provides a construction method for a prefabricated epoxy terrazzo waterstop system. Compared with Example 1, the only difference is that the overall flatness error of the cushion layer is greater than 3 mm instead of the overall flatness error of the cushion layer in Example 1 being less than 3 mm.

[0120] Comparative Example 2

[0121] This comparative example provides a construction method for a prefabricated epoxy terrazzo waterstop system. Compared with Example 1, the only difference is that the surface flatness error of the epoxy terrazzo surface layer is greater than 2mm, and the joint straightness deviation is greater than 2mm, instead of the surface flatness error of the epoxy terrazzo surface layer of Example 1 being less than 2mm, and the joint straightness deviation being less than 2mm.

[0122] Test example

[0123] The performance test of the prefabricated epoxy terrazzo plate used in the above embodiment is as follows:

[0124] (1) Bulk density test method: According to GB / T35160.1-2017 Test Method for Synthetic Stone, Part 1: Determination of Density and Water Absorption; the results are shown in Table 1;

[0125] (2) Water absorption test method: Test according to GB / T35160.1-2017 Test methods for synthetic stone, Part 1: Determination of density and water absorption; the results are shown in Table 1;

[0126] (3) Compression strength test method: According to GB / T35160.3-2017 Test Method for Synthetic Stone, Part 3: Determination of Compression Strength; the results are shown in Table 1;

[0127] (4) Bending strength test method: According to GB / T35160.2-2017 Test Method for Synthetic Stone, Part 2: Determination of Bending Strength; the results are shown in Table 1;

[0128] (5) Abrasion resistance test method: The test was conducted according to GB / T35160.4-2017 Test Methods for Synthetic Stone, Part 4: Determination of Abrasion Resistance; the results are shown in Table 1;

[0129] (6) Shore hardness test method: Test according to 6.4.1.5 of GB / T35157-2017 resin-based synthetic stone board; the results are shown in Table 1.

[0130] Table 1

[0131]

[0132] (2) The construction method of the prefabricated epoxy terrazzo floor system provided in Example 1 is compared with that of Comparative Examples 1 and 2. The construction effect is shown in Table 2.

[0133] Table 2

[0134]

[0135] It can be seen that the prefabricated epoxy terrazzo floor system construction method provided by the present invention is smaller in surface flatness, straightness of the upper edge of the skirting, straightness of the seam grid and height difference of the seam than that of Comparative Examples 1 and 2, which proves that the deviation is controlled within a smaller range by using the prefabricated epoxy terrazzo system construction method of the present invention.

[0136] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention.

Claims

1. A prefabricated epoxy terrazzo system construction method, characterized in that: The steps include: (1) Use BIM technology to model the construction area, determine the construction parameters and parameters of prefabricated epoxy terrazzo slabs, and prepare prefabricated epoxy terrazzo slabs; (2) Laying a cushion layer on the base of the construction area; the flatness error of the cushion layer shall be ≤3mm; (3) a prefabricated epoxy terrazzo plate is laid on the cushion layer by a thin-lamination method to form an epoxy terrazzo surface layer; the flatness error of the epoxy terrazzo surface layer is ≤2 mm, and the straightness deviation of the joint is ≤2 mm; wherein at least one surface of the prefabricated epoxy terrazzo plate is provided with a fiber layer; the prefabricated epoxy terrazzo plate is provided with a protective layer, and the protective layer is provided on at least one surface of the prefabricated epoxy terrazzo plate; The raw materials of the prefabricated epoxy grindstone plate include glass particles, natural sand, polymer resin, natural powder and pigment.

2. The construction method of the prefabricated epoxy terrazzo system according to claim 1, characterized in that: The mass ratio of the glass particles, natural sand, polymer resin, natural powder and pigment is (15-35): (35-60): (5-25): (3-30): (0.5-0.7); Preferably, the natural powder includes at least one of quartz stone powder and white silicate cement; Preferably, the average particle size of the glass particles is 5-10 mm; Preferably, the average particle size of the natural sand is 2-4 mm; Preferably, the polymer resin includes bisphenol A epoxy resin; Preferably, the pigment comprises a synthetic iron oxide pigment.

3. The construction method of the prefabricated epoxy terrazzo system according to claim 1 or 2, characterized in that: The flatness error of the cushion layer is monitored by at least one of the following methods: dot punching, level monitoring during construction, and finishing process level control; Preferably, the cushion layer is formed by a vibration method; Preferably, the cushion layer is provided with expansion joints.

4. The construction method of the prefabricated epoxy terrazzo system according to claim 3, characterized in that: The thickness of the cushion layer is 70-75 mm; Preferably, the cushion layer is a concrete layer; Preferably, the concrete layer comprises concrete and steel mesh.

5. The construction method of the prefabricated epoxy terrazzo system according to claim 1, characterized in that: The step (3) is to form the epoxy terrazzo surface layer by a full-length paving method; Preferably, at least one of a level meter, setting elevation fixed points in different areas, a vibrator and spot check control is used to monitor the flatness error and joint straightness deviation of the epoxy terrazzo surface layer; Preferably, the surface of the fiber layer is fully coated with adhesive to adhere the prefabricated epoxy terrazzo plate to the cushion layer to form an epoxy terrazzo surface layer; Preferably, the thickness of the adhesive on the surface of the fiber layer is 5-10 mm; Preferably, the amount of the adhesive is 6-12 kg / m 2 .

6. The construction method of the prefabricated epoxy terrazzo system according to claim 5, characterized in that: The step (3) further comprises a step of curing for no less than 7 days after the paving is completed; Preferably, the epoxy terrazzo surface layer is provided with expansion joints; Preferably, the filling material of the expansion joint is stainless steel.

7. The construction method of prefabricated epoxy terrazzo system according to claim 1, characterized in that: The material of the fiber layer includes a reinforced fiber mesh; and / or, The material of the protective layer includes organic silicon oligomer.

8. The construction method of prefabricated epoxy terrazzo system according to claim 1, characterized in that: After step (3), the step of polishing for no more than 3 times is also included; Preferably, the step (3) includes a first grinding and a second grinding; Preferably, the first polishing is performed by resin polishing; Preferably, the second polishing is performed by resin polishing.

9. The construction method of the prefabricated epoxy terrazzo system according to claim 8, characterized in that: Also includes at least one of (1)-(2): (1) The polishing process includes the steps of cutting and caulking; (2) The polishing step includes a crystallization step.

10. Application of the system construction method according to any one of claims 1 to 9 in the ground, steps, threshold stones or water stop sills.

Images