Side wall formwork for reserving concrete horizontal construction joint chiseling distance
By installing square steel and sponge strips on the side wall formwork, the quality defects at the construction joints were solved, and precise control of the steel reinforcement protective layer and improvement of the waterproofing effect were achieved.
Patent Information
- Application Number
- CN202520106759.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-01-17
AI Technical Summary
At the construction joints of the side walls, existing technologies are prone to quality defects such as misalignment and rotten roots, and the control of the concrete cover for the reinforcing steel is not precise.
The side wall formwork with a pre-reserved horizontal construction joint roughening distance is used. The thickness of the steel reinforcement protective layer is controlled by setting square steel and sponge strips at the construction joint, and the square steel is fixed by embedded water-stop fixing bars to prevent concrete leakage.
It effectively avoids damage to the edges and corners of construction joints, reduces misalignment and root rot, and improves the positioning accuracy and waterproofing effect of the steel reinforcement protective layer.
Smart Images
Figure CN223838579U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of side wall casting formwork, specifically relating to a side wall formwork with reserved roughening distance for horizontal construction joints in concrete. Background Technology
[0002] The construction of lining structures inevitably involves numerous construction joints. A construction joint refers to the joint formed between concrete poured in stages due to design requirements or construction needs. Conventional sidewall construction joints are typically located 200mm to 500mm above the surface of the base slab. When pouring the superstructure, the lower construction joints need to be roughened. This roughening process can easily damage the edges and corners of the construction joint, resulting in incomplete edges and corners. This can lead to grout leakage during concrete pouring, causing quality defects such as misalignment and rotten roots. Utility Model Content
[0003] This invention aims to reduce quality defects such as misalignment and rotten roots in horizontal construction joints, and to improve the positioning accuracy of embedded waterstops and the control accuracy of steel reinforcement protective layers.
[0004] This utility model provides the following technical solution: a side wall formwork for reserving the roughening distance of a horizontal construction joint in concrete, including a side wall formwork, which surrounds the reinforcement and embedded water-stop fixing bars of the side wall to form a side wall casting mold cavity. A water-stop strip is installed inside the arc-shaped bend of the embedded water-stop fixing bars. A side wall groove mold is provided on the forming surface of the side wall formwork in the side wall casting mold cavity, and the side wall groove mold is located at the horizontal construction joint.
[0005] Furthermore, the side wall groove mold is made of square steel, and the side wall groove mold is tied and fixed to the top of the embedded water-stop fixing bar.
[0006] Furthermore, a sponge strip is attached to the forming surface of the side wall template. The sponge strip is set horizontally along its entire length, and the top edge of the sponge strip fits into the side wall groove mold.
[0007] Furthermore, the cross-sectional dimensions of the side wall groove mold in the projection direction are consistent with the design thickness of the steel reinforcement protective layer.
[0008] Furthermore, the thickness of the sponge strip is 2-3 mm, and the width is 1-3 cm.
[0009] Furthermore, the bottom edge of the side wall formwork is leveled using square timber.
[0010] Compared with the prior art, the advantages of this utility model are:
[0011] This utility model provides a side wall formwork with a reserved roughening distance for horizontal construction joints in concrete. It features a reasonable design and simple structure. By adding square steel at the horizontal construction joint, the thickness of the reinforcing steel protective layer is effectively controlled, avoiding damage to the edges of the horizontal construction joint. Furthermore, the embedded water-stop fixing bar also serves to fix the square steel, reducing the need for additional structures. The addition of sponge strips prevents concrete leakage, reducing quality defects such as misalignment and rotten roots at the horizontal construction joint. Using this side wall formwork significantly improves the quality control of waterproofing, reinforcing steel, and concrete at the horizontal construction joint. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the side wall formwork.
[0013] Figure 2 This is a schematic diagram of the side wall casting process.
[0014] In the diagram: 1-Side wall formwork; 2-Reinforcement; 3-Embedded waterstop fixing reinforcement; 4-Waterstop strip; 5-Sponge strip; 6-Side wall groove mold; 7-Square timber; 8-Construction joint roughening position; 9-Groove. Detailed Implementation
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] like Figure 1 As shown: A side wall formwork with reserved roughening distance for horizontal construction joint of concrete includes a side wall formwork 1. The side wall formwork 1 surrounds the reinforcement 2 and the embedded water-stop fixing reinforcement 3 of the side wall to form a side wall casting mold cavity. A water-stop strip 4 is installed in the arc bend of the embedded water-stop fixing reinforcement 3. A side wall groove mold 6 is provided in the side wall casting mold cavity that fits the forming surface of the side wall formwork 1. The side wall groove mold 6 is located at the horizontal construction joint.
[0017] like Figure 2 As shown: After the concrete has solidified, the roughened construction joint 8 forms a groove 9 from the edge of the side wall, so that the edges of the side wall will not be damaged when the concrete is removed.
[0018] The side wall groove mold 6 is made of square steel and is fixed to the top of the embedded water-stop fixing bar 3. Before installation, it is necessary to measure and lay out the lines to determine the specific installation position and height of the square tube, and reinforce it firmly to ensure that the groove formed after pouring is accurately positioned, straight, and has complete edges.
[0019] A sponge strip 5 is attached to the formed surface of the side wall formwork 1. The sponge strip 5 is horizontally continuous, and its top edge fits into the side wall groove mold 6 to prevent concrete leakage. The thickness of the sponge strip 5 is 2-3 mm, and its width is 1-3 cm.
[0020] The cross-sectional dimensions of the side wall groove mold 6 in the projection direction are consistent with the design thickness of the steel reinforcement protective layer. When pouring concrete, the concrete surface is flush with the top surface of the side wall groove mold 6.
[0021] The bottom edge of the side wall formwork 1 is leveled using square timber 7.
[0022] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A side wall formwork with reserved roughening distance for horizontal construction joints in concrete, characterized in that: The side wall formwork (1) is formed by surrounding the reinforcement (2) and the embedded water-stop fixing reinforcement (3) of the side wall to form a side wall casting mold cavity. A water-stop strip (4) is installed in the arc bend of the embedded water-stop fixing reinforcement (3). A side wall groove mold (6) is set on the forming surface of the side wall formwork (1) in the side wall casting mold cavity. The side wall groove mold (6) is located at the horizontal construction joint.
2. The side wall formwork with reserved roughening distance for horizontal construction joints in concrete as described in claim 1, characterized in that: The side wall groove mold (6) is made of square steel and is fixed to the top of the embedded water-stop fixing bar (3).
3. The side wall formwork with reserved roughening distance for horizontal construction joints in concrete as described in claim 2, characterized in that: The side wall template (1) has a sponge strip (5) pasted on its forming surface. The sponge strip (5) is set horizontally along its entire length, and the top edge of the sponge strip (5) is attached to the side wall groove mold (6).
4. A side wall formwork with reserved roughening distance for horizontal construction joints in concrete as described in claim 2, characterized in that: The cross-sectional dimensions of the side wall groove mold (6) in the projection direction are consistent with the design thickness of the steel reinforcement protective layer.
5. A side wall formwork with reserved roughening distance for horizontal construction joints in concrete as described in claim 3, characterized in that: The thickness of the sponge strip (5) is 2-3 mm and the width is 1-3 cm.
6. A side wall formwork with reserved roughening distance for horizontal construction joints in concrete as described in claim 1, characterized in that: The bottom edge of the side wall template (1) is leveled by square timber (7).