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CN-122013964-A - Large-area crack-preventing grindstone structure without seams and construction method thereof

CN122013964ACN 122013964 ACN122013964 ACN 122013964ACN-122013964-A

Abstract

The invention discloses a large-area crack-preventing grindstone structure without a seam and a construction method thereof, and relates to the field of grindstones, comprising a base layer, a bottom coating and a base layer, wherein the base layer is arranged at the bottommost part and serves as a construction foundation; the invention relates to a large-area crack-preventing grindstone structure without seams and a construction method thereof, which is based on basic building and ground without pouring a secondary structure leveling layer, comprises the steps of bottoming by flexible resin, paving an anti-cracking net, effectively forming a flexible crack-resistant isolation layer, mixing and paving by using flexible resin and decorative aggregate with low crushing value, forming a high-strength integral grindstone frame crack-resistant layer, and integrally pouring by using inorganic grouting materials with high compression resistance and high fracture resistance, forming a grindstone structure integral with high compression resistance, thereby effectively avoiding the problem of empty drum crack of grindstone terrace and improving the quality and reliability of grindstone terrace.

Inventors

  • XIAO WEI
  • XU YAN

Assignees

  • 耐思福新材料科技(重庆)有限公司

Dates

Publication Date
20260512
Application Date
20260401

Claims (8)

  1. 1. A large area, crack-resistant, stone structure without seams, comprising: A base layer (1) provided at the bottommost portion as a construction basis; A base coat (2) disposed over the base layer (1); An anti-cracking net layer (3) arranged above the bottom coating (2); The anti-cracking structural layer (4) is arranged above the anti-cracking net layer (3); and the grouting reinforcement layer (5) is arranged inside the crack-resistant structural layer (4).
  2. 2. The large-area crack-resistant grindstone structure without seams according to claim 1, wherein the preparation materials of the base coat layer (2), the crack-resistant net layer (3) and the crack-resistant structure layer (4) comprise epoxy resin, polyurethane resin and polyurea resin.
  3. 3. The large-area no-seam anti-cracking grindstone structure according to claim 2, wherein a special grindstone anti-cracking net with the tensile strength larger than 2MPa is further arranged on the anti-cracking net layer (3), and the anti-cracking net layer (3) is adhered to the base coat layer (2) through the special anti-cracking net for grindstone.
  4. 4. The large-area crack-resistant grindstone structure without seams according to claim 2, characterized in that the tensile strength of epoxy resin, polyurethane resin and polyurea resin adopted by the crack-resistant net layer (3) is more than 15MPa, and the elongation at break is more than 15%.
  5. 5. The large-area crack-resistant grindstone structure without seams according to claim 2, characterized in that the tensile strength of epoxy resin, polyurethane resin and polyurea resin adopted by the crack-resistant structural layer (4) is more than 20MPa, and the elongation at break is more than 20%.
  6. 6. The large-area crack-resistant grindstone structure without seams according to claim 2, characterized in that the crack-resistant structural layer (4) is provided with water-washed and dried crushed stone with a mixing crushing value lower than 4%, and the thickness of the crack-resistant structural layer (4) is 20mm.
  7. 7. The large-area crack-resistant grindstone structure without seams according to claim 2, characterized in that the grouting reinforcement layer (5) adopts inorganic grouting material, the flexural strength of the inorganic grouting material is not lower than 8MPa, the compressive strength is not lower than 50MPa, and the grouting reinforcement layer (5) is used for grouting compaction of the crack-resistant structural layer (4).
  8. 8. The method for constructing a large-area crack-resistant grindstone structure without joint according to any one of claims 1 to 7, comprising the steps of: polishing the base layer (1) to ensure the surface of the base layer (1) to be smooth, wherein the flatness error is controlled within the range of less than 5mm of a two-meter guiding rule; Uniformly coating a base coat (2) on the surface of the base layer (1), wherein the coating thickness is controlled to be 0.2-0.5mm, so that the base coat fully permeates and bridges the base layer (1), and the bonding force between the base layer (1) and the upper structure is enhanced; Step three, bonding an anti-cracking net layer (3) on the surface of the bottom coating (2), wherein a special adhesive is used during bonding to ensure that the anti-cracking net layer (3) is smooth and firmly bonded with the bottom coating (2), and no phenomena of hollowing and tilting are caused; Step four, mixing the selected epoxy resin or polyurethane resin or polyurea resin with water-washed and dried broken stone with a crushing value lower than 4% according to a certain proportion, uniformly spreading the mixture on the upper part of the anti-cracking net layer (3) to form an anti-cracking structural layer (4) with the thickness of 20mm, and scraping the surface by using tools such as a scraper in the spreading process; Fifthly, the anti-cracking structural layer (4) is filled and compacted by adopting the inorganic grouting material with high fracture resistance and high compression resistance, and the grouting material is slowly and uniformly filled from one end of the anti-cracking structural layer (4) during filling, so that the grouting material is ensured to fill the internal gaps of the anti-cracking structural layer (4); Step six, using a heavy grinder to be matched with grinding sheets with different meshes, sequentially grinding from low meshes to high meshes, sequentially grinding to 150 meshes, and cleaning surface grinding scraps after each grinding; The hole repairing operation of the grinding stone is carried out twice, the first time uses the colored grinding stone resin to be matched with the special powder for hole repairing to carry out slurry kneading and hole repairing, the holes are filled and compacted when the holes are repaired, and the surface of the grinding stone is smooth with the surrounding grinding stone; step eight, a heavy grinder is used for matching with a 300-mesh grinding disc, so that the surface of the grinding stone is more uniform and flat; step nine, using a lithium-based curing agent to permeate the curing agent for more than two times, and keeping the surface moist for a certain time after each permeation; step ten, a heavy grinder is used again to be matched with grinding sheets with 500-6000 meshes, and the grinding sheets are vertically and horizontally ground, so that the ground surface of the grinding stone is ensured to emit light; Step eleven, polishing by using special polishing materials to further ensure the stain resistance and the smoothness of the ground; And twelve, after finishing all construction contents of the grinding stone, fully paving the grinding stone by using a special protection pad to protect a finished product, wherein the protection pad is required to be flatly and firmly covered on the surface of the grinding stone.

Description

Large-area crack-preventing grindstone structure without seams and construction method thereof Technical Field The invention relates to a grinding stone technology, in particular to a large-area crack-preventing grinding stone structure without a seam and a construction method thereof. Background The terrazzo terrace is a novel terrace imitating terrazzo terrace construction, has all excellent performances of an epoxy resin floor, and can be integrated with walls and floors. The grinding stone in the prior art has a plurality of attractive patterns, but still has some defects, the greatest risk and the greatest quality problem of the grinding stone are idle cracking, particularly, the four-generation building in recent years is in progress, but the grinding stone terrace enters a four-generation building garage and experiences a plurality of pain, the flatness of the floor surface of the original structure is difficult to pour to a two-meter guiding rule which is smaller than 10mm, the surface layer selection faces the dilemma that on one hand, if the epoxy grinding stone is selected, the epoxy resin is used for filling and then constructing the epoxy grinding stone surface layer, the cost is high, on the other hand, if the traditional terrazzo product is selected, the separation is smaller and the problem of idle cracking cannot be avoided, and if the secondary leveling layer is selected and then various grinding stone surface layers are selected, the risk of idle cracking cannot be avoided. Disclosure of Invention The invention aims to provide a large-area crack-preventing grindstone structure without seams and a construction method thereof, and aims to solve the problems that in the prior art, if epoxy grindstone is selected, epoxy resin is used for filling and then constructing an epoxy grindstone surface layer, so that the cost is abnormal, the traditional terrazzo product is selected, the separation is smaller, the problem of empty drum cracking cannot be avoided, and the risk of empty drum cracking still cannot be avoided by selecting a secondary leveling layer and then using various grindstone surface layers. In order to achieve the above purpose, the invention provides a large-area crack-preventing grindstone structure without seams and a construction method thereof, comprising the following steps: The base layer is arranged at the bottommost part and is used as a construction foundation, and the base layer is a bottom concrete layer and can be replaced by a building or a ground; A primer layer disposed over the base layer; The anti-cracking net layer is arranged above the bottom coating; The anti-cracking structural layer is arranged above the anti-cracking net layer; and the grouting reinforcement layer is arranged inside the crack-resistant structural layer. Further, the preparation materials of the bottom coating, the anti-cracking net layer and the anti-cracking structure layer comprise epoxy resin, polyurethane resin and polyurea resin. Further, the special anti-cracking net for the grinding stone is further arranged on the anti-cracking net layer, the anti-cracking net layer is adhered to the base coat through the special anti-cracking net for the grinding stone, the drawing strength and the fracture elongation rate range are selected, the anti-cracking net layer can be ensured to have enough strength and good ductility and can disperse stress when bearing a certain external force, cracking caused by stress concentration is avoided, the high adhesion tensile strength can ensure that the anti-cracking net is firmly adhered to the base coat, and the anti-cracking effect is prevented from being influenced due to separation of the anti-cracking net and the base coat. Further, the tensile strength of epoxy resin, polyurethane resin and polyurea resin adopted by the anti-cracking net layer is more than 15MPa, and the breaking elongation is more than 15%. Further, the drawing strength of epoxy resin, polyurethane resin and polyurea resin adopted by the anti-cracking structural layer is more than 20MPa, and the breaking elongation is more than 20%. Further, the water-washing and drying broken stone with the mixing crushing value lower than 4% is arranged on the anti-cracking structural layer, the thickness of the anti-cracking structural layer is 20mm, the drawing strength and the breaking elongation are set, so that the anti-cracking structural layer can still keep the structure intact when the anti-cracking structural layer faces a large external force, cracking can be effectively resisted, and the anti-cracking structural layer and the water-washing and drying broken stone with the low crushing value are mixed to form a porous and continuously-bonded high-strength integral grinding stone frame anti-cracking layer, so that the anti-cracking performance is further enhanced. Furthermore, the grouting reinforcement layer adopts inorganic grouting material, the flexural strength of the inorganic grout