Anti-cracking and hollowing design structure of terrazzo floor

Abstract

The application discloses a kind of anti-cracking and hollowing terrazzo ground design structures.The structure includes: ground base layer, interface agent layer is arranged on its surface;Leveling layer is arranged on the interface agent layer;Composite expansion layer is positioned on the ground base layer and embedded in the leveling layer, including mesh pipeline and injection structure extended upward from the mesh pipeline, during the construction, filling material is pumped into the inner cavity of the mesh pipeline from the injection structure during the arrangement and shrinkage forming of the leveling layer, the composite expansion layer expands and extrudes, fits the leveling layer, and performs shrinkage compensation;A plurality of terrazzo surface layers are paved on the leveling layer through adhesive layer.The application effectively prevents the cracking and hollowing of terrazzo ground through the active shrinkage compensation of composite expansion layer, and has the advantages of reasonable structure, convenient construction, significant anti-cracking effect, etc.

Description

Technical Field

[0001] This invention relates to the field of building decoration technology, specifically to a terrazzo floor design structure that prevents cracking and hollowing. Background Technology

[0002] Traditional terrazzo flooring, due to its smooth surface and durability, was once widely used in public places such as hospitals, schools, and train stations. However, it was gradually phased out due to its cumbersome construction, poor decorative effect, and low-end appearance. In recent years, with the technological advancements in the building decoration industry, significant innovations have been made in terrazzo surface materials and surface treatment processes. The new generation of seamless cast-in-place inorganic terrazzo flooring features strong integrity, high decorative effect, and convenient maintenance, and is widely used in high-end commercial, public buildings, and residential spaces.

[0003] However, due to the combined effects of various factors such as materials, substrate, process and environment, large-area on-site poured inorganic terrazzo flooring currently suffers from problems such as hollowing and cracking, which shortens its service life and seriously affects its appearance, becoming a thorny problem in the decoration industry.

[0004] The main raw material of cast-in-place inorganic terrazzo flooring is cement-based, and its properties are similar to concrete. During curing, maintenance, and use, it is inevitable that volume shrinkage due to factors such as drying shrinkage, temperature stress, and load will cause cracks. Large-area, seamless cast-in-place inorganic terrazzo is more prone to this problem. Furthermore, the leveling layer of terrazzo flooring is usually cement mortar or concrete, which differs significantly from the high-performance cement-based terrazzo surface layer in terms of thermal expansion coefficient, shrinkage, water absorption, and strength. These two materials with significantly different physicochemical properties are difficult to bond firmly and stably, and are prone to delamination and hollowing under stress and load during subsequent use.

[0005] Currently, using interface agents is a common technique to enhance the adhesion between the leveling layer and the surface layer. However, existing interface treatment methods are not well-matched to both, necessitating the research of specialized interface technologies tailored to the specific characteristics of the materials to achieve stable adhesion and prevent hollow areas. Furthermore, current technologies lack effective means to actively compensate for the shrinkage of the leveling layer, making it difficult to fundamentally solve the cracking and hollow area problems of terrazzo floors from a structural perspective. Summary of the Invention

[0006] The purpose of this invention is to address the technical problems of cracking and hollowing in large-area cast-in-place inorganic terrazzo flooring in the prior art, and to provide a terrazzo flooring design structure that prevents cracking and hollowing. Through the active shrinkage compensation of the composite expansion layer and the synergistic effect of the multi-layer structure, cracking and hollowing of terrazzo flooring can be effectively prevented.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a terrazzo floor design structure to prevent cracking and hollowing, comprising:

[0008] The ground base layer has an interface agent layer on its surface;

[0009] A leveling layer is laid on the interface agent layer;

[0010] The composite expansion layer is positioned on the ground base and embedded in the leveling layer. It includes a mesh pipeline and an injection structure extending upward from the mesh pipeline. During construction, when the leveling layer is laid out and shrinks, the filler is pumped into the inner cavity of the mesh pipeline through the injection structure. The composite expansion layer expands and squeezes and adheres to the leveling layer to compensate for shrinkage.

[0011] Several terrazzo surface layers are laid on the leveling layer through an adhesive layer.

[0012] As a further description of the above technical solution:

[0013] The leveling layer is also embedded with a reinforcing mesh, which is located above the mesh pipeline and fitted onto the injection structure.

[0014] As a further description of the above technical solution:

[0015] The composite expansion layer also includes several anchor bars, one end of which is fixedly connected to the mesh pipeline, and the other end is anchored into the ground base layer.

[0016] As a further description of the above technical solution:

[0017] The surface of the mesh pipe is provided with a plurality of first expansion sections. The filler is injected and squeezes the inner wall of the first expansion section, causing the first expansion section to deform and expand outward.

[0018] As a further description of the above technical solution:

[0019] A second expansion section is provided at the structural corner of the mesh pipeline and the injection structure. The second expansion section has a V-shaped structure. The filler is injected and squeezes the inner wall of the second expansion section, causing the second expansion section to deform and expand outward.

[0020] As a further description of the above technical solution:

[0021] The injection structure includes a guide cylinder, a conical cylinder, and an injection port that are connected in sequence. The guide cylinder is connected to the mesh pipeline and its inner cavity is connected. The injection port extends to the joint of the adjacent terrazzo surface layer.

[0022] As a further description of the above technical solution:

[0023] A plug is provided at the opening of the injection port.

[0024] As a further description of the above technical solution:

[0025] A joint filler layer is provided at the joints between adjacent terrazzo surfaces.

[0026] As a further description of the above technical solution:

[0027] The sealant layer is an elastic and flexible structure that wraps around the injection port.

[0028] As a further description of the above technical solution:

[0029] The filler is a micro-expansion grouting resin or a micro-expansion cement-based grout.

[0030] In summary, due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0031] 1. This invention embeds a composite expansion layer into the leveling layer. During the leveling layer's installation and shrinkage molding, filler is pumped into the inner cavity of the mesh pipe, causing the composite expansion layer to expand and compress against the leveling layer, thus actively compensating for the leveling layer's shrinkage. Compared to passive crack prevention and anti-cavitation methods that add expansion components to the material, this invention, through active intervention at the structural level, can more accurately and effectively offset the shrinkage stress of the leveling layer, preventing defects such as cavitation and cracking in terrazzo surfaces from the root. Specifically, a first expansion section is set on the surface of the mesh pipe, and a V-shaped second expansion section is set at the structural corner. After the filler is injected, the inner wall of the expansion section is compressed to deform and expand outward, achieving directional and controllable expansion compensation. In particular, stress concentration areas such as structural corners are reinforced, further improving the anti-cavitation and cracking effect.

[0032] 2. This invention enhances the adhesion between the ground base layer and the leveling layer through the interface agent layer, makes the leveling layer more compact through the expansion and compression of the composite expansion layer, and achieves a firm bond between the leveling layer and the terrazzo surface layer through the adhesive layer. The synergistic effect of the multi-layer structure significantly improves the stability and durability of the overall ground structure.

[0033] 3. The injection structure of this invention includes a guide cylinder, a conical cylinder, and an injection port. The injection port extends to the joint of adjacent terrazzo surfaces, facilitating the injection of filler during construction without affecting the overall aesthetics of the terrazzo surface. A plug is provided at the injection port opening to prevent debris from entering; an elastic flexible sealant layer is provided at the joint to wrap the injection port, ensuring both the aesthetics and sealing of the joint, while also providing flexible protection for the injection structure.

[0034] 4. The present invention embeds a reinforcing mesh within the leveling layer, which enhances the overall tensile strength of the leveling layer; the anchoring bars anchor the composite expansion layer to the ground base, ensuring the positional stability of the composite expansion layer and the effective transmission of expansion force. The dual reinforcement measures further improve the reliability of the ground structure. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A schematic diagram of a terrazzo floor design to prevent cracking and hollowing.

[0037] Figure 2 A schematic diagram of the construction process for a terrazzo floor design structure designed to prevent cracking and hollowing. Figure 1 .

[0038] Figure 3 A schematic diagram of the construction process for a terrazzo floor design structure designed to prevent cracking and hollowing. Figure 2 .

[0039] Figure 4 A schematic diagram of the construction process for a terrazzo floor design structure designed to prevent cracking and hollowing. Figure 3 .

[0040] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0041] Figure 6 for Figure 1 Enlarged view of point B in the middle.

[0042] Legend:

[0043] 1-Ground base layer; 2-Interface agent layer; 3-Leveling layer; 4-Composite expansion layer; 5-Mesh pipeline; 6-Injection structure; 7-Terrain stone surface layer; 8-Adhesive layer; 9-First expansion section; 10-Second expansion section; 11-Guide cylinder; 12-Conical cylinder; 13-Injection port; 14-Plug; 15-Sealing layer. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] In the description of the embodiments of the present invention, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0048] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] Example 1:

[0050] Please see Figure 1-6 The present invention provides a technical solution: a terrazzo floor design structure to prevent cracking and hollowing, comprising a floor base layer 1, an interface agent layer 2, a leveling layer 3, a composite expansion layer 4, and a terrazzo surface layer 7.

[0051] The ground base layer 1 is a concrete base layer or other building ground base layer. During construction, the surface of the ground base layer 1 is first cleaned to remove laitance, dust, residue and other debris, and then an interface agent layer 2 is applied to its surface. The interface agent layer 2 can be a conventional cement-based interface agent or a reinforced interface agent containing nanomaterials to enhance the bonding strength between the ground base layer 1 and the leveling layer 3.

[0052] Leveling layer 3 is laid on top of interface agent layer 2 and is formed by pouring cement mortar or fine stone concrete. The function of leveling layer 3 is to provide a flat and solid base layer for terrazzo surface layer 7.

[0053] The composite expansion layer 4 is positioned on the ground base layer 1 and embedded in the leveling layer 3. The composite expansion layer 4 includes a mesh pipe network 5 and an injection structure 6 extending upwards from the mesh pipe network 5. The mesh pipe network 5 can be made of materials with a certain degree of elasticity and deformation capacity, such as polyethylene, polypropylene, or other plastic pipes, or corrugated metal pipes, laid in a mesh structure. The lower end of the injection structure 6 is connected to the mesh pipe network 5, and the upper end extends to near the upper surface of the leveling layer 3. In this embodiment, as shown... Figure 5 As shown, it adopts the following specific structural form:

[0054] The surface of the mesh pipe 5 is provided with several first expansion sections 9. The first expansion section 9 is an elastically deformable bladder-shaped or corrugated structure. After the filler is injected, it squeezes the inner wall of the first expansion section 9, causing the first expansion section 9 to deform and expand outward. The arrangement of the first expansion sections 9 makes the expansion of the mesh pipe 5 more complete and uniform, improving the shrinkage compensation effect.

[0055] A second expansion section 10 is provided at the structural corner of the mesh pipe 5 and the injection structure 6. The second expansion section 10 has a V-shaped structure (it is integrally formed on the surface of the mesh pipe 5 and the injection structure 6, with both sides extending on either side of the structural corner). The filler is injected and squeezes the inner wall of the second expansion section 10, causing the second expansion section 10 to deform and expand outward. The corner is a stress concentration area and the location where hollow cracks are most likely to occur. The second expansion section 10 can provide targeted expansion compensation at the corner, further improving the crack prevention effect.

[0056] During construction, during the laying and shrinkage molding of the leveling layer 3 (i.e., during the curing and shrinkage process after the leveling layer 3 is poured), the filler is pumped into the inner cavity of the mesh pipeline 5 through the injection structure 6. The filler can be a micro-expansion grouting resin or a micro-expansion cement-based grout. After the filler is injected, the volume of the composite expansion layer 4 expands, compressing and adhering to the leveling layer 3, actively compensating for the shrinkage of the leveling layer 3, thereby eliminating the tensile stress caused by the shrinkage of the leveling layer and preventing cracking of the terrazzo surface layer 7.

[0057] Several terrazzo surface layers 7 are laid on the leveling layer 3 via an adhesive layer 8. The adhesive layer 8 can be a special terrazzo adhesive or a cement-based adhesive material to ensure a strong bond between the terrazzo surface layer 7 and the leveling layer 3. The terrazzo surface layer 7 can be laid by segmented casting or prefabrication and assembly.

[0058] Example 2:

[0059] Please see Figure 1-6 The figure shows a terrazzo floor design structure for preventing cracking and hollowing according to Embodiment 2 of the present invention. Based on the above embodiments, this embodiment further improves upon the following technical solution: a reinforcing mesh (not shown in the figure) is embedded within the leveling layer 3. The reinforcing mesh is located above the mesh pipe 5 and fitted onto the injection structure 6. The reinforcing mesh can be made of wire mesh or fiber mesh cloth, and its function is to enhance the overall tensile strength of the leveling layer 3, further improving its crack resistance.

[0060] Example 3:

[0061] Please see Figure 1-6 The figure shows a terrazzo floor design structure for preventing cracking and hollowing according to Embodiment 3 of the present invention. Based on the above embodiments, this embodiment further improves upon the following technical solution: The composite expansion layer 4 also includes several anchor bars (not shown in the figure). One end of each anchor bar is fixedly connected to the mesh pipe 5 (e.g., by welding, binding, or snapping), and the other end is anchored into the ground base layer 1. The function of the anchor bars is to firmly position the composite expansion layer 4 on the ground base layer 1, ensuring that the composite expansion layer 4 does not shift during expansion and that the expansion force can be effectively transmitted to the leveling layer 3.

[0062] Example 4:

[0063] Please see Figure 6 The figure shows a terrazzo floor design structure for preventing cracking and hollowing according to Embodiment 4 of the present invention. Based on the above embodiments, this embodiment further improves upon the following technical solutions: The injection structure 6 includes a guide cylinder 11, a conical cylinder 12, and an injection port 13 connected sequentially. The lower end of the guide cylinder 11 is connected to the mesh pipe 5 and its inner cavity is connected. The upper end of the injection port 13 extends to the joint of the adjacent terrazzo surface layer 7. The conical cylinder 12 connects the guide cylinder 11 and the injection port 13, serving as a transition and flow guide. A plug 14 (such as a rubber plug) is provided at the opening of the injection port 13 to seal the injection port 13 after the filler is injected, preventing debris from entering.

[0064] A joint filler layer 15 is provided at the joint between adjacent terrazzo surface layers 7. The joint filler layer 15 is an elastic and flexible structure (such as silicone sealant, polyurethane sealant, etc.), which covers the injection port 13 (and the plug 14). The joint filler layer 15 not only ensures the aesthetics and sealing performance of the joint between the terrazzo surface layers 7, but also provides flexible protection for the injection port 13, preventing the injection port 13 from being damaged due to temperature changes or vibration.

[0065] The construction process of a terrazzo floor design structure for preventing cracking and hollowing according to the above embodiment is as follows:

[0066] Step 1: Clean the surface of the ground base layer 1, remove laitance, dust, residue and other debris, and then apply or spray an interface agent to the surface of the ground base layer 1 to form an interface agent layer 2.

[0067] Step 2: Lay the mesh pipes 5 of the composite expansion layer 4 on the ground base layer 1, and anchor the mesh pipes 5 to the ground base layer 1 with anchor bars, so that the injection structure 6 on it is positioned synchronously.

[0068] Step 3: Pour the leveling layer 3 (cement mortar or fine aggregate concrete) on the interface agent layer 2, so that the composite expansion layer 4 is embedded in the leveling layer 3, and the upper end of the injected structure 6 is exposed above the upper surface of the leveling layer 3, such as... Figure 2 As shown. Optionally, a reinforcing mesh is embedded in the leveling layer 3, the reinforcing mesh being located above the mesh pipe 5 and fitted onto the injection structure 6.

[0069] Step 4: During the laying and shrinkage molding of leveling layer 3 (i.e., the period from initial setting to final setting of the leveling layer, such as 2-6 hours for initial setting and 6-12 hours for final setting, and 3-8 hours after leveling layer 3 is laid), the filler (micro-expansion grouting resin or micro-expansion cement-based grout) is pumped into the cavity of the mesh pipeline 5 through the injection port 13 of the injection structure 6, passing through the conical cylinder 12 and the guide cylinder 11. After the filler is injected, the first expansion part 9 and the second expansion part 10 of the composite expansion layer 4 expand outward, compressing and adhering to the leveling layer 3, actively compensating for the shrinkage of the leveling layer 3, specifically as follows... Figure 3 As shown.

[0070] Step 5: Lay the adhesive layer 8 on the leveling layer 3, then lay several pieces of terrazzo surface layer 7 on the adhesive layer 8, and seal the opening of the injection port 13 with a plug 14. Figure 4 As shown. A joint filler layer 15 is provided at the joints of the terrazzo surface layer 7, and the joint filler layer 15 covers the injection port 13.

[0071] Step Six: Perform subsequent processes such as grinding, polishing, and surface treatment on terrazzo surface layer 7 to complete the terrazzo flooring installation. The final terrazzo flooring product looks like this. Figure 1 As shown.

[0072] This invention provides a terrazzo floor design structure to prevent cracking and hollowing. The structure is reasonable and easy to construct. Through the active shrinkage compensation of the composite expansion layer, it effectively prevents cracking and hollowing of the terrazzo floor, significantly improving the service life and appearance quality of the terrazzo floor. It is suitable for large-area cast-in-place inorganic terrazzo floor projects in various building places such as hospitals, schools, stations, high-end commercial buildings, public buildings, and residences. It has good industrial practicality and promotion and application value.

[0073] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A design structure for terrazzo flooring to prevent cracking and hollowing, characterized in that, include: The ground base layer has an interface agent layer on its surface; A leveling layer is laid on the interface agent layer; The composite expansion layer is positioned on the ground base and embedded in the leveling layer. It includes a mesh pipeline and an injection structure extending upward from the mesh pipeline. During construction, when the leveling layer is laid out and shrinks, the filler is pumped into the inner cavity of the mesh pipeline through the injection structure. The composite expansion layer expands and squeezes and adheres to the leveling layer to compensate for shrinkage. Several terrazzo surface layers are laid on the leveling layer through an adhesive layer.

2. The anti-cracking and anti-hollowing terrazzo floor design structure according to claim 1, characterized in that, The leveling layer is also embedded with a reinforcing mesh, which is located above the mesh pipeline and fitted onto the injection structure.

3. The anti-cracking and anti-hollowing terrazzo floor design structure according to claim 1, characterized in that, The composite expansion layer also includes several anchor bars, one end of which is fixedly connected to the mesh pipeline, and the other end is anchored into the ground base layer.

4. The anti-cracking and anti-hollowing terrazzo floor design structure according to claim 1, characterized in that, The surface of the mesh pipe is provided with a plurality of first expansion sections. The filler is injected and squeezes the inner wall of the first expansion section, causing the first expansion section to deform and expand outward.

5. The anti-cracking and anti-hollowing terrazzo floor design structure according to claim 1, characterized in that, A second expansion section is provided at the structural corner of the mesh pipeline and the injection structure. The second expansion section has a V-shaped structure. The filler is injected and squeezes the inner wall of the second expansion section, causing the second expansion section to deform and expand outward.

6. The anti-cracking and anti-hollowing terrazzo floor design structure according to claim 1, characterized in that, The injection structure includes a guide cylinder, a conical cylinder, and an injection port that are connected in sequence. The guide cylinder is connected to the mesh pipeline and its inner cavity is connected. The injection port extends to the joint of the adjacent terrazzo surface layer.

7. The anti-cracking and anti-hollowing terrazzo floor design structure according to claim 6, characterized in that, A plug is provided at the opening of the injection port.

8. The anti-cracking and anti-hollowing terrazzo floor design structure according to claim 6, characterized in that, A joint filler layer is provided at the joints between adjacent terrazzo surfaces.

9. The anti-cracking and anti-hollowing terrazzo floor design structure according to claim 8, characterized in that, The sealant layer is an elastic and flexible structure that wraps around the injection port.

10. The anti-cracking and anti-hollowing terrazzo floor design structure according to claim 1, characterized in that, The filler is a micro-expansion grouting resin or a micro-expansion cement-based grout.

Images