A method for leveling precast block floors with screeds

Abstract

This invention discloses a method for leveling a precast concrete floor using screed blocks, relating to the field of floor paving technology. The method includes the following steps: Step 1, fabrication of the screed precast blocks; Step 2, repair of the corners of the screed precast blocks; Step 3, measurement and positioning to determine the location and spacing of the screed precast blocks; Step 4, base treatment, where screed precast blocks are installed from the first layer of concrete to improve the overall flatness accuracy; and Step 5, application of leveling mortar to the bottom of the screed precast blocks; Step 6, application of a release agent to the side where the separation joint is located, achieving concrete compartmentation without the need for cutting joints; and Step 7, the remaining procedures are all conventional procedures, requiring only proper construction quality control. This invention solves the technical problems of uneven floor height and insufficient accuracy in conventional leveling construction.

Description

Technical Field

[0001] This invention provides a method for leveling precast block ground with screeds, relating to the field of floor paving technology. Background Technology

[0002] Epoxy resin floor coatings contain numerous hydroxyl and ether bonds, enabling them to adsorb onto the substrate. In the process of using epoxy resin as a floor coating, the leveling stage is crucial. To meet the requirements of precision electronic production workshops and robotic applications, the anti-static epoxy floor surface needs a height difference of ≤3mm. Due to space and load constraints, leveling robots cannot be used; conventional processes must be employed to achieve this. Therefore, the design utilizes precast blocks to ensure consistent bottom heights. This leads to the design of the required precast blocks and a ground screed leveling method. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this invention. This invention discloses the basic concept of the technical solution adopted to solve the above-mentioned technical problems as follows:

[0004] A method for leveling precast block floors with screeds includes the following steps:

[0005] Step 1: Fabrication of precast concrete blocks with reinforcing ribs;

[0006] According to the drawing requirements, select appropriate side templates and bottom templates to form a mold, prepare concrete of the same type as the floor, pour it into the mold, so that the concrete fills and flows out from the vent hole, and then plug the vent hole with a plug.

[0007] The precast rib blocks are trapezoidal columnar;

[0008] Continue filling with concrete while maintaining pressure, and thoroughly vibrate to compact it;

[0009] Remove the plug from the vent hole, and concrete will spray out. Plug the vent hole again within 3 seconds. Allow it to cure for 7 days before use.

[0010] Step 2: Repair the corners of the precast concrete blocks;

[0011] During demolding or transportation, bumps and knocks are inevitable at the corners;

[0012] Galvanized steel sheets are installed on both sides of the damaged corner. The galvanized steel sheets are "L"-shaped and have a connecting plate on the top. Grouting is suitable between the connecting plate and the galvanized steel sheet for repair and maintenance, and then it can be used.

[0013] Step 3: Measure and locate to determine the position and spacing of the precast concrete blocks;

[0014] Step 4, base treatment: To improve the overall flatness and accuracy of the floor, precast screed blocks are installed from the first layer of concrete; leveling mortar is applied appropriately to the bottom of the screed blocks.

[0015] Step 5: Apply a release agent to one side of the partition joint to achieve concrete compartmentation without cutting the joint;

[0016] Step six: All other procedures follow standard procedures, with proper construction quality control.

[0017] In a further technical solution, the top of the side template is provided with a flange, the flange is provided with a longitudinal slide rail, and the longitudinal slide rail is provided with a leveling component, which is suitable for leveling the top of the poured concrete.

[0018] In a further technical solution, the scraping component includes vertical rods and slider plates. The vertical rods are provided in two sets, and slider plates are installed at the bottom of each rod. The slider plates are adapted to be installed on a longitudinal slide rail.

[0019] The slider plate is fixedly connected to the vertical rod, and the vertical rod is equipped with a clamping part and is a vertical telescopic rod;

[0020] A transverse bar is installed between the two sets of clamping parts, and a lower pressure plate is installed on the transverse bar. The lower pressure plate is suitable for pressing on the vibrated and compacted concrete in step one.

[0021] In a further technical solution, in step two, the notch caused by the collision is located at positions A and B. Position A is located on a side surface, not on the end face. A galvanized sheet is attached to the precast rib block from the side, and a connecting plate is provided on the top. A pouring hole is provided on the connecting plate, and the pouring hole is suitable for pouring reinforcing concrete.

[0022] In a further technical solution, position B is located on the end face and at the side, and an end panel is fixedly installed on the outside of the galvanized sheet and the connecting plate. The end panel, the galvanized sheet and the connecting plate are adapted to close the notch.

[0023] In a further technical solution, a bending plate is installed at the bottom of the connecting plate, and the bending plate and the galvanized plate are adapted to be detachably connected; a rubber layer is provided on the side of the bending plate opposite to the rib precast block, and a release agent is applied to the side of the rubber layer opposite to the rib precast block.

[0024] Beneficial effects:

[0025] Using this precast block screed leveling method effectively controls construction precision and improves construction efficiency. The screed precast blocks are factory-prefabricated, achieving high-precision flatness requirements for the floor, reducing labor costs, saving costs, and shortening the construction period. It also provides diverse options for research into refined project management. The blocks can be used directly on-site, saving time. Applying a release agent to the side of the screed precast block where the separation joint is required separates it from the newly poured concrete, achieving compartmentation without the need for cutting joints. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram illustrating the fabrication of the precast reinforced block according to the present invention.

[0028] Figure 2 This is a schematic cross-sectional view of the repair of the top of the precast block with screed in this invention;

[0029] Figure 3 This is a schematic diagram of the structure of the precast concrete block according to Embodiment 2 of the present invention;

[0030] Figure 4 This is a schematic diagram showing the location of the notch in Embodiment 3 of the present invention;

[0031] Figure 5 This is a structural diagram of the precast block with the notch located at position A in this invention;

[0032] Figure 6 This is a structural diagram of the precast block with the notch located at position B in this invention;

[0033] Figure 7 This is a schematic cross-sectional view of the repair of the top of the precast block with screed in Embodiment 4 of the present invention.

[0034] In the diagram: 1. Precast rib block; 2. Side formwork; 3. Vent hole; 4. Bottom formwork; 5. Connecting plate; 6. Galvanized sheet; 7. Longitudinal slide rail; 8. Vertical rod; 9. Sliding plate; 10. Horizontal rod; 11. Lower pressure plate; 12. Notch; 13. Pouring hole; 14. End panel; 15. Bending plate; 16. Rubber layer; 17. Formwork removal; 18. Plug. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0036] The application principle of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] Example 1

[0038] like Figures 1 to 2 The image shows one embodiment of the present invention. A method for leveling precast block ground with screeds includes the following steps:

[0039] Step 1: Fabrication of precast rib blocks 1;

[0040] According to the drawing requirements, select appropriate side template 2 and bottom template 4 to form a mold, prepare concrete of the same type as the floor, pour it into the mold, so that the concrete fills and flows out from the vent hole 3, and then plug the vent hole 3 with plug 18.

[0041] The precast screed block 1 is trapezoidal columnar;

[0042] Continue filling with concrete while maintaining pressure, and thoroughly vibrate to compact it;

[0043] Remove the plug 18 from the vent hole 3, and concrete will spray out. Plug the vent hole 3 again within 3 seconds. After curing for 7 days, it is ready for use.

[0044] Step 2: Repair the corner of the first end of the precast block;

[0045] During demolding or transportation, bumps and knocks are inevitable at the corners;

[0046] Galvanized steel plates 6 are installed on both sides of the damaged corner. The galvanized steel plates 6 are "L" shaped and have a connecting plate 5 on the top. The space between the connecting plate 5 and the galvanized steel plates 6 is suitable for grouting repair and maintenance, and then it can be used.

[0047] Step 3: Measure and locate to determine the position and spacing of the precast concrete blocks 1;

[0048] Step 4, base treatment: To improve the overall flatness and accuracy of the floor, precast screed blocks 1 are installed from the first layer of concrete; the bottom of the precast screed blocks 1 is appropriately coated with leveling mortar.

[0049] Step 5: Apply a release agent to one side of the partition joint to achieve concrete compartmentation without cutting the joint;

[0050] Step six: All other procedures follow standard procedures, with proper construction quality control.

[0051] Example 2

[0052] like Figure 3 As shown, another embodiment of the present invention is presented. Based on embodiment 1, in a further technical solution, the top of the side template 2 is provided with a flange, and a longitudinal slide rail 7 is provided on the flange. A leveling component is provided on the longitudinal slide rail 7, and the leveling component is suitable for leveling the top of the poured concrete. The leveling component includes a vertical rod 8 and a sliding block 9. Two sets of vertical rods 8 are provided, and sliding blocks 9 are respectively installed at the bottom. The sliding blocks 9 are suitable for mounting on the longitudinal slide rail 7.

[0053] The slider plate 9 is fixedly connected to the vertical rod 8, and the vertical rod 8 is equipped with a clamping part and is a vertical telescopic rod.

[0054] A transverse bar 10 is installed between the two sets of clamping parts, and a lower pressure plate 11 is installed on the transverse bar 10. The lower pressure plate 11 is suitable for pressing on the vibrated and compacted concrete in step one.

[0055] Example 3

[0056] like Figures 4 to 6 As shown, this is another embodiment of the present invention. Based on embodiment 2, in step two, the notch 12 generated by the impact is divided into position A and position B. Position A is located on a non-end face and on the side, that is, at the corner of the two faces. A galvanized plate 6 is attached to the precast rib block 1 from the side, and a connecting plate 5 is provided on the top. A pouring hole 13 is opened on the connecting plate 5, and the pouring hole 13 is suitable for pouring reinforcing concrete.

[0057] Position B is located on the end face and at the side, i.e. at the top corner of the three sides. An end panel 14 is fixedly installed on the outside of the galvanized plate 6 and the connecting plate 5. The end panel 14, the galvanized plate 6 and the connecting plate 5 are adapted to close the notch 12.

[0058] Example 4

[0059] like Figure 7 As shown, another embodiment of the present invention is presented. Based on embodiment 3, to achieve a stable connection of the galvanized sheet 6, a bending plate 15 is installed at the bottom of the connecting plate 5. The bending plate 15 and the galvanized sheet 6 are adapted for detachable connection. A rubber layer 16 is provided on the side of the bending plate 15 opposite to the precast rib block 1, and a release agent is applied to the side of the rubber layer 16 opposite to the precast rib block 1. Normally, a release agent should be applied to the galvanized sheet or connecting plate at the repair casting location to reduce adhesion problems after molding.

[0060] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method for leveling precast block floors with screeds, characterized in that, Includes the following steps: Step 1, making precast concrete blocks (1); According to the drawing requirements, select appropriate side templates (2) and bottom templates (4) to form a mold, prepare concrete of the same type as the floor, pour it into the mold, so that the concrete fills the air vent (3) and flows out, and then plug the air vent (3) with plug (18). The precast screed block (1) is a trapezoidal column; Continue filling with concrete while maintaining pressure, and thoroughly vibrate to compact it; Remove the plug (18) inside the vent hole (3), and concrete will spray out. Plug the vent hole (3) again within 3 seconds. After curing for 7 days, it can be used. Step 2, repair the end corners of the precast concrete block (1); During demolding or transportation, bumps and knocks are inevitable at the corners; Galvanized plates (6) are installed on both sides of the damaged corner. The galvanized plates (6) are "L" shaped and have a connecting plate (5) on the top. Grouting repair and maintenance are suitable between the connecting plate (5) and the galvanized plates (6) so that they can be used. Step 3: Measure and locate to determine the position and spacing of the precast concrete blocks (1); Step 4, base treatment: In order to improve the overall flatness accuracy of the floor, precast screed blocks (1) are set from the first layer of concrete; the bottom of the precast screed blocks (1) is appropriately coated with leveling mortar; Step 5: Apply a release agent to one side of the partition joint to achieve concrete compartmentation without cutting the joint; Step six: All other procedures follow standard procedures, with proper construction quality control.

2. The method for leveling precast block ground with screeding according to claim 1, characterized in that, The top of the side template (2) is provided with a flange, and a longitudinal slide rail (7) is provided on the flange. A leveling component is provided on the longitudinal slide rail (7), and the leveling component is suitable for leveling the top of the poured concrete.

3. The method for leveling precast block ground with screeds according to claim 2, characterized in that, The scraping component includes a vertical rod (8) and a slider plate (9). The vertical rod (8) is provided in two sets and a slider plate (9) is installed at the bottom of each rod. The slider plate (9) is adapted to be installed on a longitudinal slide rail (7). The slider plate (9) is fixedly connected to the vertical rod (8), and the vertical rod (8) is equipped with a clamping part and is a vertical telescopic rod; A transverse bar (10) is installed between the two sets of clamping parts, and a lower pressure plate (11) is installed on the transverse bar (10). The lower pressure plate (11) is suitable for pressing on the vibrated and compacted concrete in step one.

4. The method for leveling precast block ground with screeding according to claim 3, characterized in that, In step two, the notch (12) caused by the collision is divided into position A and position B. Position A is located on the non-end face and on the side. A galvanized plate (6) is set to attach the precast rib block (1) from the side. A connecting plate (5) is set on the top. A pouring hole (13) is opened on the connecting plate (5). The pouring hole (13) is suitable for pouring reinforcing concrete.

5. The method for leveling precast block ground with screeding according to claim 4, characterized in that, Position B is located on the end face and at the side, and an end panel (14) is fixedly installed on the outside of the galvanized sheet (6) and the connecting plate (5). The end panel (14), the galvanized sheet (6) and the connecting plate (5) are adapted to close the notch (12).

6. The method for leveling precast block ground with screeding according to claim 4, characterized in that, A bending plate (15) is installed at the bottom of the connecting plate (5), and the bending plate (15) and the galvanized plate (6) are adapted to be detachably connected; a rubber layer (16) is provided on the side of the bending plate (15) relative to the rib precast block (1), and a release agent is applied to the side of the rubber layer (16) relative to the rib precast block (1).

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