Construction method of epoxy terrazzo floor

Abstract

The invention discloses a construction method of an epoxy terrazzo floor, which comprises the following steps: 1) repairing a base layer; (2) brushing a moisture-proof film on the base layer and laying a PE isolating film; (3) an anti-crack mortar leveling layer is constructed; (4) a rigid anti-crack plate is laid on the leveling layer, expansion joints extending along boundaries between block areas are reserved according to the block areas of the design pattern of the epoxy terrazzo floor, and the expansion joints are filled; (5) the rigid anti-crack plate is coated with a base coat, an anti-crack fiber layer is laid, and the anti-crack fiber layer is coated with an anti-crack inhibition film in a blade coating mode; the epoxy millstone floor construction method has the advantages that the epoxy millstone floor construction method is high in construction efficiency, the service life of the floor is long, and the maintenance cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure roof panel construction, and in particular to a construction method of an epoxy terrazzo floor. Background Art

[0002] NCF epoxy terrazzo floor system is made of green and environmentally friendly recycled transparent glass, quartz stone, shells, sea sand, river sand, Aggregates selected from construction waste particles, recycled harmless hard plastic particles, metal particles, hard wood particles or other natural stone waste particles, etc., are combined with green high-molecular binders without VOC emissions (such as green and environmentally friendly epoxy resins, polyurethanes, etc.), and are mixed in strict proportions, spread on site, and undergo more than 30 grinding processes, hole filling, and polishing to form a maintenance-free overall seamless floor system. It fully meets the three-star green building requirements and perfectly realizes the designer's spatial aesthetic expression.

[0003] However, during the construction of current epoxy terrazzo floors, the dividing strips are generally bonded to the ground by glue or cement, etc., with poor fixing effect and low construction efficiency. At the same time, the dividing strips, as the dividing lines of the epoxy terrazzo floor patterns, need to have a certain gloss, so brass plates or aluminum plates are generally used, and plastic materials with certain colors are also used. The dividing strips have large rigidity. When the epoxy terrazzos of different colors on both sides of the dividing strips are deformed, the dividing strips are difficult to provide buffering. At the same time, the expansion joints of the rigid anti-cracking layer are not set reasonably, and the synergistic effect with the epoxy terrazzo is crossed, which can easily lead to cracking, breaking, bulging, etc. of the epoxy terrazzo floor, seriously affecting the service life and maintenance cost of the epoxy terrazzo floor. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a construction method for epoxy terrazzo floors to solve the problems of inconvenient construction of existing epoxy terrazzo floors, unreasonable expansion joint settings, and high rigidity of dividing strips, which lead to easy cracking, breakage, and bulging of the floors during use.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a construction method of epoxy terrazzo floor, comprising the following steps: 1) Base repair: Treat and repair the surface of the base and existing cracks; 2) Apply moisture-proof film on the base layer and lay PE isolation film; 3) Construction of anti-cracking mortar leveling layer; 4) Lay a rigid anti-crack board on the leveling layer, reserve expansion joints along the dividing line between the block areas according to the block areas of the epoxy terrazzo floor design pattern, and fill the joints; 5) Apply a primer on the rigid crack-resistant board and lay a crack-resistant fiber layer, and scrape and apply a crack-resistant inhibition film on the crack-resistant fiber layer; 6) Install multiple fixed supports along the direction of the expansion joint, and install a partition strip on the fixed supports; 7) Pour epoxy terrazzo of corresponding colors in the corresponding divided areas, and perform rough grinding after curing; 8) After cleaning and patching holes, perform fine grinding to complete the construction of the epoxy terrazzo floor.

[0006] As an optimization, in step 1, grind and clean the base layer to fully expose the cracks, open a V-shaped groove for the cracks. For cracks with a width exceeding the preset value, implant steel bars perpendicular to the cracks at a preset interval, then clean the dust, brush NCF epoxy primer in the V-shaped groove, fill the V-shaped groove with repair mortar, then roll and apply NCF solvent epoxy primer along the cracks, and lay a bidirectional carbon fiber cloth with a preset width along the extension direction of the cracks.

[0007] As an optimization, the depth of the V-shaped groove is greater than 20 mm, the width at the opening on both sides exceeds the crack edge by 30 mm respectively. The steel bars used for implanting are threaded steel bars with a diameter of 10 mm and a length greater than 200 mm. The repair mortar is made by mixing standard graded sand and NCF solvent-free epoxy resin in a ratio of 4:1. The NCF solvent epoxy primer applied by rolling takes the V-shaped groove as the center, and the width on both sides is greater than 10 cm. When laying the bidirectional carbon fiber cloth, it takes the V-shaped groove as the center, and its laying width is not less than 20 cm.

[0008] As an optimization, in step 4, the rigid crack-resistant board uses PC quartz bricks. Among them, the PC quartz bricks are PC quartz bricks without surface treatment. If PC quartz bricks with surface treatment are used, the glaze of the PC quartz bricks is removed by grinding.

[0009] As an optimization, in step 6, the fixed support includes a horizontally arranged bottom plate, and a support rod is vertically arranged on the bottom plate. The support rod is rotatably connected to the bottom plate so that it can rotate around its own axis; a limiting rod is arranged on the support rod. The limiting rod is horizontally arranged, one end of which is fixedly connected to the support rod, and the other end is provided with a limiting baffle perpendicular to its axis; correspondingly, the partition strip is vertically arranged, and a card slot extending along its height direction is opened at the bottom side of the partition strip. The card slot can be sleeved on the limiting rod, and when the card slot is sleeved on the limiting rod, both sides of the partition strip in the thickness direction are respectively attached to the limiting plate and the support rod.

[0010] As an optimization, the depth of the card slot does not exceed half of the height of the partition strip. After the partition strip is connected to the fixed support, the limiting rod is located at the bottom of the card slot.

[0011] As an optimization, the bottom plate is rectangular, one side of the support rod is close to the bottom plate, and the bottom plate is fixed by bonding.

[0012] As an optimization, the partition strip is of a sandwich structure, and a rigid structure layer and a flexible structure layer are arranged along its width direction.

[0013] As an optimization, the rigid structure layer is a copper plate or an aluminum plate, and the flexible structure layer is rubber. Among them, the rigid structure layer is in an n shape, which includes a top plate and two side plates, and the flexible structure layer is arranged between the two side plates.

[0014] As an optimization, the lower side surface of the top plate is a downwardly convex curved surface structure, so that its bending resistance stiffness when bending upward is greater than that when bending downward.

[0015] Compared with the prior art, the present invention has the following advantages: By setting expansion joints reserved according to the design pattern of the epoxy grinding stone floor, the anti-cracking layer of each divided area and the epoxy grinding stone surface layer cooperate better and deform together, thereby reducing the internal stress of the floor, preventing cracking and bulging, and extending the service life of the floor. At the same time, by fixing the partition strip with a fixed support, the construction efficiency and the fixing effect of the partition strip are improved, thereby improving the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the fixed installation of the partition strip in the present invention; Figure 2 is Figure 1 the top view of; Figure 3 is a schematic front view structure diagram of the partition strip in the present invention; Figure 4 is a schematic cross-sectional structure diagram of the partition strip in the present invention; In the figure: 1 partition strip, 101 rigid structure layer, 102 flexible structure layer, 2 bottom plate, 3 support rod, 4 limiting rod, 5 limiting baffle, 6 clamping groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present invention will be further described below in conjunction with the drawings and embodiments.

[0018] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part rather than all of the embodiments of the present invention. Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0019] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance. In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined. In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Example: Refer to Figures 1-4 , a construction method for an epoxy grindstone floor, comprising the following steps, 1) Subbase repair; treating and repairing the surface and existing cracks of the subbase; Specifically, grind and clean the base layer to fully expose the cracks. Open a V-shaped groove for the cracks. For cracks wider than the preset value, implant steel bars perpendicular to the cracks at a preset interval. Then clean the dust, brush NCF epoxy primer in the V-shaped groove, and fill the V-shaped groove with repair mortar. Then roll-coat NCF solvent epoxy primer along the cracks and lay a two-way carbon fiber cloth with a preset width along the extension direction of the cracks.

[0021] The depth of the V-shaped groove is greater than 20 mm, and the width at the opening exceeds the crack edge by 30 mm on both sides. The steel bars used for implanting are threaded steel bars with a diameter of 10 mm and a length greater than 200 mm. The repair mortar is made by mixing standard graded sand and NCF solvent-free epoxy resin in a ratio of 4:1. The NCF solvent epoxy primer for roll-coating is centered on the V-shaped groove, and the width on both sides is greater than 10 cm. When laying the two-way carbon fiber cloth, it is centered on the V-shaped groove, and its laying width is not less than 20 cm.

[0022] For the joint seams, post-cast strips, cold joints, etc., cut them straight with a cutting machine, and the cutting depth is greater than 3 cm. Knock off the concrete less than 4 cm away from the center of the joint, and the depth is not less than 3 cm. Vacuum the dust, brush NCF solvent-free epoxy primer, and mix special repair mortar (standard graded sand) with NCF solvent-free epoxy resin (stir in a ratio of graded sand to resin of 4:1). Directly level and tamp the mixed repair sand.

[0023] Then use a 3-meter-long spirit level to mark the ground, and control the flatness within 3 mm for every 2 meters. Grind the high places, and for the low places, vacuum the dust, brush NCF solvent-free epoxy primer, and mix special repair mortar (standard graded sand) with NCF solvent-free epoxy resin (stir in a ratio of graded sand to resin of 4:1). Directly level and tamp the mixed repair sand.

[0024] Require Party A to strictly fix the fire pipes, electric wires, and water pipes. Vacuum the dust on the ground, brush NCF solvent-free epoxy primer, and mix special repair mortar (standard graded sand) with NCF solvent-free epoxy resin (stir in a ratio of graded sand to resin of 4:1). Wrap them at intervals of 20 cm with a length of not less than 5 cm.

[0025] 2) Apply a moisture-proof membrane on the base layer and lay a PE isolation membrane; after the moisture-proof membrane dries, use tape to stick the joints when laying the isolation membrane, and use a sealing strip to isolate all the places where it intersects with the anti-crack mortar leveling layer.

[0026] 3) Construct an anti-crack mortar leveling layer; 4) Lay a rigid anti-crack board on the leveling layer. According to the divided areas of the epoxy terrazzo floor design pattern, reserve expansion joints extending along the dividing lines between the divided areas, and fill the joints with joint-filling resin and graded sand.

[0027] The rigid crack-resistant plate is made of PC quartz bricks. Among them, the PC quartz bricks are untreated PC quartz bricks. If surface-treated PC quartz bricks are used, the glaze of the PC quartz bricks should be removed by grinding to improve the interfacial adhesion.

[0028] 5) Apply primer on the rigid crack-resistant plate and lay a crack-resistant fiber layer, and scrape a crack-resistant inhibition film on the crack-resistant fiber layer; Specifically, for priming: evenly roll the primer on the ground at a ratio of 2:1 with a roller or evenly scrape the primer on the ground with a knife board. After drying, pre-treat the expansion joints of the base layer. (This process does not allow people to step on it and needs to be cured for 12 hours) Lay the fiber crack-resistant layer: Use fiber resin to stick the fiber crack-resistant layer material on the ground that has been primed. The joints of the fiber layer need to be overlapped by about 10 cm. (This process does not allow people to step on it) Scrape the crack-resistant inhibition film: Evenly scrape the prepared 2:1 crack-resistant inhibition film on the laid crack-resistant fiber layer. (This process does not allow people to step on it and needs to be cured for 12 hours) 6) Install fixed supports and install the partition strip 1. Among them, connect the partition strip 1 with the fixed supports, and there are multiple fixed supports distributed along the extension direction of the partition strip 1, so that the partition strip 1 extends along the extension direction of the expansion joint. Traditionally, the installation of the partition strip 1 mainly uses a glue gun and glue stick or fixes it on the ground where the crack-resistant inhibition film has been scraped with clean river sand and 502 glue. In this embodiment, the fixed supports are used to fix the partition strip 1. The fixed support includes a horizontally arranged bottom plate 2, and a support rod 3 is vertically arranged on the bottom plate 2. The support rod 3 is rotatably connected to the bottom plate 2 so that it can rotate around its own axis; a limiting rod 4 is arranged on the support rod 3. The limiting rod 4 is horizontally arranged, one end of which is fixedly connected to the support rod 3, and the other end is provided with a limiting baffle 5 perpendicular to its axis; correspondingly, the partition strip 1 is vertically arranged, and a card slot 6 extending along its height direction is opened at the bottom side thereof. The card slot 6 can be sleeved on the limiting rod 4, and when the card slot 6 is sleeved on the limiting rod 4, both sides of the partition strip 1 in the thickness direction are respectively attached to the limiting plate and the support rod 3. The depth of the card slot 6 does not exceed half of the height of the partition strip 1. After the partition strip 1 is connected to the fixed support, the limiting rod 4 is located at the bottom of the card slot 6. The bottom plate 2 is rectangular, the support rod 3 is close to one side of the bottom plate 2, and the bottom plate 2 is fixed on the crack-resistant layer by bonding.

[0029] During construction, first fix the fixed support on the ground along the direction of the partition strip 1, and then install the partition strip 1. The partition strip 1 is clamped on the limit rod 4 from top to bottom, which makes the installation more convenient. At the same time, the clamping of the support rod 3 and the limit baffle 5 on the partition strip 1 can effectively ensure the position of the partition strip 1 and prevent it from moving. Moreover, the support rod 3 is rotatably installed on the bottom plate 2, so that the partition strip 1 can rotate by a certain angle, thus facilitating the adjustment of the bending degree of the partition strip 1 and enabling better adaptation to the fixed installation of the partition strip 1 for complex floor patterns and the curvature adjustment during the installation process.

[0030] In order to have a certain elasticity between the floors of each divided area to buffer the deformation of the epoxy terrazzo floor, in this embodiment, the partition strip 1 is of a sandwich structure, and a rigid structure layer 101 and a flexible structure layer 102 are arranged along its width direction. The rigid structure layer 101 is a copper plate or an aluminum plate, and the flexible structure layer 102 is rubber. Among them, the rigid structure layer 101 is in an n shape, which includes a top plate and two side plates, and the flexible structure layer 102 is arranged between the two side plates. The lower side surface of the top plate is a downward convex curved surface structure, so that its bending stiffness when bending upward is greater than that when bending downward. In this way, when the epoxy terrazzo floor expands and contracts due to heat and cold, the expansion joint itself corresponds to the boundary line of the floor pattern, enabling each divided area of the floor to deform independently. Therefore, during deformation, especially when the floors on both sides of the partition strip 1 squeeze the partition strip 1, the sandwich structure of the partition strip 1 gives it a certain elasticity to prevent the floor from cracking, bulging, etc. due to internal stress. Moreover, the n-shaped rigid structure can ensure the metallic luster of the exposed part of the partition strip 1, without affecting the beauty of the boundary line between each divided area when grinding the floor. And by setting a convex curved surface structure on the lower side surface of the top plate, it bends downward under a large compressive stress and will not bend upward, thus causing the dividing table to be pushed out under reciprocating loads. Thereby extending the service life of the floor.

[0031] 7) Pour epoxy terrazzo of the corresponding color in the corresponding segmented area, and perform rough grinding after curing; mix the special epoxy terrazzo resin component A and component B in a ratio of 4:1, and use a stirrer to fully stir and mix them, then pour them into a special stirrer containing various graded aggregates and stir well. Spread, level, and compact the materials (people are not allowed to step on it during this process. People can step on it 24 hours after spreading is completed. Rolling by machinery and equipment is prohibited. Machinery and equipment can pass through only after 48 hours of complete curing). The prepared epoxy terrazzo should be promptly placed on the anti-cracking layer. The spreading thickness should be preferably 10 mm - 12 mm after compaction. Since the local flatness of the original base layer may reach about 12 mm during laying, a 2-meter leveling bar should be used for leveling to ensure that the flatness is within 2m / 3mm. Then, use a troweling machine for compaction or manual compaction to make the surface of the epoxy terrazzo flat, dense, without sand holes or rough surfaces. After 48 hours of curing, use a dust-free grinding machine equipped with hexagonal grinding heads for trial grinding. If the dust ground out does not adhere to the grinding heads and there is no blackening phenomenon, it indicates that the curing period has reached and grinding and leveling can be carried out. When grinding and leveling, it should be carried out in the order of first horizontal and then vertical. The grinding rows should intersect with each other by one-third. The grinding machine should swing left and right, and the grinding speed of the grinding machine should be evenly controlled according to the grinding situation of the surface. It is not allowed to stop arbitrarily or change the grinding speed to avoid phenomena such as local depression, unevenness, and missed grinding.

[0032] 8) After cleaning and patching holes, perform fine grinding to complete the construction of the epoxy terrazzo floor.

[0033] The present invention sets expansion joints according to the design pattern of the epoxy terrazzo floor, enabling better synergistic action between the anti-cracking layer and the epoxy terrazzo surface layer in each segmented area to deform together, thereby reducing the internal stress of the floor, preventing cracking and bulging, and extending the service life of the floor. At the same time, by fixing the partition strips with fixed supports, the construction efficiency and the fixing effect of the partition strips are improved, thus improving the construction quality.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit the technical solutions. Those of ordinary skill in the art should understand that any modifications or equivalent replacements made to the technical solutions of the present invention without departing from the purpose and scope of the present technical solution should be covered within the scope of the claims of the present invention.

Claims

1. A construction method of an epoxy grinding stone floor, characterized in that: It includes the following steps: 1) Subgrade repair: Treat and repair the surface and existing cracks of the subgrade. 2) Apply a moisture-proof film and lay a PE isolation film on the subgrade. 3) Construct a crack-resistant mortar leveling layer. 4) Lay a rigid crack-resistant board on the leveling layer. According to the divided areas of the epoxy terrazzo floor design pattern, reserve expansion joints extending along the dividing lines between the divided areas and fill the joints. 5) Apply a primer on the rigid crack-resistant board and lay a crack-resistant fiber layer, and scrape a crack-resistant inhibition film on the crack-resistant fiber layer. 6) Install multiple fixed supports along the direction of the expansion joint, and install partition strips on the fixed supports. 7) Pour epoxy terrazzo of corresponding colors in the corresponding divided areas, and perform rough grinding after curing. 8) After cleaning and patching holes, perform fine grinding to complete the construction of the epoxy terrazzo floor.

2. The construction method of an epoxy grinding stone floor according to claim 1, characterized in that: In step 1, grind and clean the subgrade to fully expose the cracks, open V-shaped grooves for the cracks. For cracks with a width exceeding the preset value, implant steel bars perpendicular to the cracks at preset intervals, then clean the dust, brush NCF epoxy primer in the V-shaped grooves, fill the V-shaped grooves with repair mortar, then roll NCF solvent epoxy primer along the cracks, and lay a two-way carbon fiber cloth with a preset width along the extension direction of the cracks.

3. The construction method of an epoxy grindstone floor according to claim 2, characterized in that: The depth of the V-shaped groove is greater than 20 mm, and the width at the opening on both sides exceeds the crack edge by 30 mm respectively. The steel bars for implanting are threaded steel bars with a diameter of 10 mm and a length greater than 200 mm. The repair mortar is made by mixing standard graded sand and NCF solvent-free epoxy resin in a ratio of 4:

1. The rolled NCF solvent epoxy primer is centered on the V-shaped groove, and the width on both sides is greater than 10 cm. When laying the two-way carbon fiber cloth, it is centered on the V-shaped groove, and its laying width is not less than 20 cm.

4. The construction method of an epoxy grindstone floor according to claim 1, characterized in that: In step 4, the rigid crack-resistant board uses PC quartz bricks. Among them, the PC quartz bricks are PC quartz bricks without surface treatment. If PC quartz bricks with surface treatment are used, the glaze of the PC quartz bricks is removed by grinding.

5. The construction method of an epoxy grindstone floor according to claim 2, characterized in that: In step 6, the fixed support includes a horizontally arranged bottom plate, and a support rod is vertically arranged on the bottom plate. The support rod is rotatably connected to the bottom plate so that it can rotate around its own axis; a limiting rod is arranged on the support rod. The limiting rod is horizontally arranged, one end of which is fixedly connected to the support rod, and the other end is provided with a limiting baffle perpendicular to its axis; correspondingly, the partition strip is vertically arranged, and a slot extending along its height direction is opened at the bottom side of the partition strip. The slot can be sleeved on the limiting rod, and when the slot is sleeved on the limiting rod, both sides of the partition strip in the thickness direction are respectively attached to the limiting plate and the support rod.

6. The construction method of an epoxy grindstone floor according to claim 5, characterized in that: The depth of the slot does not exceed half of the height of the partition strip. After the partition strip is connected to the fixed support, the limiting rod is located at the bottom of the slot.

7. A construction method of an epoxy grindstone floor according to claim 5, characterized in that: The bottom plate is rectangular, and the support rod is close to one side of the bottom plate. The bottom plate is fixed by bonding.

8. A construction method of an epoxy grindstone floor according to claim 5, characterized in that: The partition strip is of a sandwich structure, and a rigid structure layer and a flexible structure layer are arranged along its width direction.

9. The construction method of an epoxy grindstone floor according to claim 8, characterized in that: The rigid structure layer is a copper plate or an aluminum plate, and the flexible structure layer is rubber. Among them, the rigid structure layer is in an n shape, which includes a top plate and two side plates, and the flexible structure layer is arranged between the two side plates.

10. The construction method of an epoxy grindstone floor according to claim 9, characterized in that: The lower side surface of the top plate is a downwardly convex curved surface structure, so that its flexural rigidity when bent upward is greater than that when bent downward.

Images