Concrete external corner grout leakage prevention formwork structure

Abstract

The utility model belongs to the field of concrete formworks, and particularly relates to a concrete external corner grout leakage prevention formwork structure which comprises two formworks spliced into a right angle, a first splicing seam is formed between the two formworks, a first square timber covers the first splicing seam, a second splicing seam is formed between the first square timber and the formworks, and a second square timber covers the second splicing seam. According to the utility model, the first square timber and the second square timber are adopted to carry out staggered joint lap joint at the gap of the template, and the first abutted seam and the second abutted seam are blocked, so that the slurry leakage phenomenon is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete formwork, and particularly relates to a concrete external corner anti-leakage formwork structure. Background Art

[0002] Before concrete pouring, formwork needs to be erected first. The formwork system includes multiple prefabricated formworks. Since there are multiple formworks, there will be joints. When erecting the wall and column concrete formwork, gaps are likely to occur at the internal and external corners. During the concrete pouring and vibration process, the concrete cement slurry is likely to leak out from the gaps. After the cement slurry leaks, the coarse aggregate accumulates at the leakage site, resulting in quality problems of concrete surface defects.

[0003] Therefore, an improved technical solution is needed to address the deficiencies of the above-mentioned prior art. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a concrete external corner anti-leakage formwork structure, which can seal the gaps of the formwork at the external corners of the formwork and avoid the occurrence of leakage.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] The concrete external corner anti-leakage formwork structure includes two formworks spliced into a right angle. A first joint is formed between the two formworks. A first square timber is covered at the first joint. A second joint is formed between the first square timber and the formwork. A second square timber is covered at the second joint.

[0007] Further, the two formworks are respectively denoted as formwork A and formwork B. Formwork A is vertically erected on the inner surface of formwork B; the end face of formwork B does not exceed the outer surface of formwork A.

[0008] Further, the inner surface of the first square timber abuts against the outer surface of formwork A and does not exceed the outer surface of formwork B.

[0009] Further, the inner surface of the second square timber abuts against the outer surface of formwork B, and the second square timber does not exceed the side of the first square timber facing away from formwork A.

[0010] Further, the concrete external corner anti-leakage formwork structure includes a formwork C erected on the upper end of the already poured concrete wall. The lower end of formwork C extends downward beyond the upper end face of the already poured concrete wall. A first rubber strip is clamped between formwork C and the wall surface of the already poured concrete wall.

[0011] Further, the thickness of the first rubber strip 6 is 2 - 3 mm and the width is 10 - 20 mm.

[0012] Further, the anti-leakage formwork structure for the concrete external corner includes formwork D at the bottom layer of the formwork structure. The lower end surface of formwork D stands on the floor slab. A vertical square timber is tightly pressed outside formwork D, and a presser foot pressed by the vertical square timber is further included. A second rubber strip is arranged between the presser foot and the floor slab.

[0013] Further, the presser foot is a square steel or an angle steel.

[0014] Further, the presser foot is an angle steel, which includes a first side plate and a second side plate arranged vertically. The first side plate is clamped between the vertical square timber and the formwork, and the second side plate of the angle steel is arranged between the second rubber strip and the lower end surface of the vertical square timber.

[0015] Further, the thickness of the second rubber strip is 5 - 10 mm and the width is 40 - 80 mm.

[0016] The beneficial effects of the present utility model are as follows:

[0017] By adopting the staggered joint lapping of the first square timber and the second square timber at the gap of the formwork, the first joint and the second joint are sealed, and the occurrence of slurry leakage is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The attached drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. Among them:

[0019] Figure 1 It is a schematic diagram of the cooperation of the first square timber and the second square timber in the embodiment of the present utility model.

[0020] Figure 2 It is a schematic diagram of the formwork erection at the concrete joint in the embodiment of the present utility model.

[0021] Figure 3 It is a schematic diagram of the bottom formwork erection in the embodiment of the present utility model.

[0022] In the figure: 1 - formwork, 2 - first joint, 3 - first square timber, 4 - second square timber, 5 - second joint, 6 - first rubber strip, 7 - vertical square timber, 8 - presser foot, 9 - second rubber strip, 10 - floor slab. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present utility model.

[0024] In the description of the present utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and does not require the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "connected" and "joined" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0026] As Figures 1 to 3 shown, the template 1 structure of the present utility model includes: walls, column external corner control structures, concrete joint control structures, and wall and column concrete bottom control structures.

[0027] For the wall and column external corner control structure, square timbers are used to stagger and build at the gaps of the template 1 to seal the gaps. For the concrete joint control structure, a first rubber strip 6 is arranged at the concrete joint part that has been poured, and the joint template 1 is covered on the first rubber strip 6 to seal the gaps. For the wall and column concrete bottom control structure, a pressure foot 8 is placed at the bottom of the template 1, and a double-sided adhesive is arranged between the pressure foot 8 and the floor slab 10 to seal the bottom gaps and prevent slurry leakage. At the same time, the size control of the template 1 is strengthened to reduce the joint gaps. Through the above measures, the appearance quality of the concrete can be greatly improved, and common problems affecting the appearance quality such as pitted surface, exposed reinforcement, honeycombing, holes, root rot, and chipped corners at the wall column corners, wall roots, and wall joints can be well controlled.

[0028] Next, a detailed description will be given.

[0029] When the wall and column external corner formworks are erected, gaps at the internal and external corners will cause cement slurry to seep out from the gaps and coarse aggregates to accumulate, resulting in surface defect quality problems. To avoid slurry leakage, the wall and column external corner control structure is adopted here. As Figure 1As shown, two templates 1 are assembled at right angles, and the two templates 1 are template A and template B, respectively, and template A stands vertically on the inner surface of template B; a first joint 2 is formed between the two templates 1, and a first square wood 3 is provided at the first joint 2, and a second joint 5 is formed between the first square wood 3 and the template 1, and a second square wood 4 is provided at the second joint 5. That is, the square woods are overlapped with staggered joints, and the first joint 2 and the second joint 5 are blocked after the initial cement slurry that has seeped out solidifies, which can block the subsequent cement slurry from seeping out, and avoid the situation where the cement slurry leakage is so serious that quality defects appear on the concrete surface.

[0030] Preferably, Figure 1 As shown, the end face of template B does not exceed the outer surface of template A; when there is only one horizontal template 1 on each side during casting of concrete columns, only one end of each template 1 is perpendicular to the inner surface of another template 1, so as to facilitate the erection of the external template 1 support system; the inner surface of the first square timber 3 abuts against the outer surface of the template A and does not exceed the outer surface of template B; the inner surface of the second square timber 4 abuts against the outer surface of the template B, and the second square timber 4 does not exceed the side of the first square timber 3 facing away from the template A; thus, when the template 1 support system outside the external angle template 1 supports the first square timber 3, the second square timber 4 and the template 1, it will not affect the position layout of the existing template 1.

[0031] The first square wood 3 and the second square wood 4 are whole square woods, and the staggered overlapped square woods can well block the exposed cement slurry when the joints of the template 1 are not tight. This structure not only strengthens the corner template 1, reduces the deformation of the corner template 1, makes the corner template 1 not prone to cracking and warping, and prolongs the service life of the template 1, but also can well seal the gaps, and has good economic value.

[0032] Gaps are prone to appear at the joints of wall and column concrete. During the concrete pouring process, concrete mortar is prone to leak out from the gaps, resulting in surface defects such as honeycomb and rough surface. To avoid leakage, a control structure is used at the concrete joints. Figure 2 As shown, taking the template C set at the joint position as an example, the lower end of the template C exceeds the upper end surface of the poured concrete wall downward, and a first adhesive strip 6 is sandwiched between the template C and the wall surface of the poured concrete wall. The thickness of the first adhesive strip 6 is 2-3mm and the width is 10-20mm. Preferably, the first adhesive strip 6 is made of foam adhesive with at least one side having stickiness, such as foam double-sided adhesive. Pasting the double-sided adhesive on the poured concrete at the joint can well seal the gap. This method is simple, effective, and convenient for construction.

[0033] Cracks are likely to appear at the bottom of the wall and column concrete. During the concrete pouring process, the concrete mortar is likely to leak out from the cracks, resulting in surface defects such as honeycombing, pockmarks, and rotten roots. To avoid the occurrence of slurry leakage, a control structure for the bottom of the wall and column concrete is adopted here. As Figure 3 shown, taking formwork D as an example, the lower end surface of formwork D stands on the floor slab 10. A vertical wooden square 7 is pressed against the outside of the formwork D, and a pressing foot 8 is provided under the vertical wooden square 7. A second rubber strip 9 is arranged between the pressing foot 8 and the floor slab 10.

[0034] The pressing foot 8 can be made of common building materials such as square steel or angle steel. Preferably, the pressing foot 8 is made of angle steel. The angle steel includes a first side plate and a second side plate arranged vertically. The first side plate is clamped between the vertical wooden square 7 and the formwork 1, and the second side plate of the angle steel is arranged between the second rubber strip 9 and the lower end surface of the vertical wooden square 7.

[0035] Furthermore, the width of the second rubber strip 9 is smaller than the width of the second side plate, and the second rubber strip 9 abuts against the outside of the formwork D; that is, the outside of the second side plate is suspended. At this time, the final thickness of the second rubber strip 9 after being pressed can be adjusted by inserting gaskets with different thicknesses between the suspended end of the second side plate and the floor slab 10.

[0036] Furthermore, the thickness of the second rubber strip 9 is 5 - 10 mm, and the width is 40 - 80 mm. Preferably, the second rubber strip 9 is made of foamed single-sided adhesive or foamed double-sided adhesive.

[0037] Cracks are likely to appear at the bottom of the wall and column concrete. The pressing foot 8 made of square steel or angle steel is placed closely against the outside of the bottom of the formwork 1. The square steel or angle steel used for the pressing foot 8 can not only be recycled, but also can well seal the gap between the formwork 1 and the floor slab 10. A double-sided adhesive is pasted at the bottom of the pressing foot 8, which can well seal the gap between the angle steel and the floor slab 10. The combined use of the pressing foot 8 and the double-sided adhesive enables the gap at the bottom of the formwork 1 to be tightly sealed, preventing the exposure of cement slurry and reducing the occurrence of rotten roots.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are within the scope of the claims of the present invention awaiting approval.

Claims

1. A concrete positive corner anti-leakage formwork structure, comprising two formworks (1) spliced ​​at a right angle, a first splicing seam (2) formed between the two formworks (1), characterized in that: The first joint (2) is covered with a first square wood (3), a second joint (5) is formed between the first square wood (3) and the template (1), and the second joint (5) is covered with a second square wood (4).

2. The concrete positive corner anti-leakage slurry template structure according to claim 1 is characterized by: The two templates (1) are template A and template B, respectively. Template A stands vertically on the inner surface of template B; the end surface of template B does not exceed the outer surface of template A.

3. The concrete positive corner anti-leakage slurry template structure according to claim 2 is characterized by: The inner surface of the first square wood (3) abuts against the outer surface of the template A and does not exceed the outer surface of the template B.

4. The concrete positive corner anti-leakage slurry template structure according to claim 2 is characterized by: The inner surface of the second square wood (4) abuts against the outer surface of the template B, and the second square wood (4) does not exceed the side of the first square wood (3) facing away from the template A.

5. The concrete positive corner anti-leakage formwork structure according to claim 1, characterized in that: It comprises a template C erected on the upper end of a poured concrete wall, characterized in that: the lower end of the template C extends downward beyond the upper end surface of the poured concrete wall, and a first adhesive strip (6) is sandwiched between the template C and the wall surface of the poured concrete wall.

6. The concrete positive corner anti-leakage formwork structure according to claim 5, characterized in that: The first rubber strip (6) has a thickness of 2-3 mm and a width of 10-20 mm.

7. The concrete positive corner anti-leakage formwork structure according to claim 1, characterized in that: The invention comprises a template D located at the bottom layer of the template (1) structure, the lower end face of the template D standing on the floor (10), the outer side of the template D being pressed tightly by a vertical square timber (7), and the invention is characterized in that it also comprises a presser foot (8) pressed down by the vertical square timber (7), and a second rubber strip (9) is arranged between the presser foot (8) and the floor (10).

8. The concrete positive corner anti-leakage slurry template structure according to claim 7 is characterized by: The presser foot (8) is a square steel or an angle steel.

9. The concrete positive corner anti-leakage slurry template structure according to claim 7, characterized in that: The presser foot (8) is an angle steel, which comprises a first side plate and a second side plate which are arranged vertically, wherein the first side plate is clamped between the vertical square timber (7) and the template (1), and the second side plate of the angle steel is arranged between the second rubber strip (9) and the lower end surface of the vertical square timber (7).

10. The concrete positive corner anti-leakage formwork structure according to claim 7, characterized in that: The second rubber strip (9) has a thickness of 5-10 mm and a width of 40-80 mm.

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