A clean concrete anti-cracking structure and a tapered concrete cushion block mold

Abstract

The utility model relates to a kind of clear water concrete crack resistance structure and a kind of conical concrete cushion block mould, for clear water concrete crack resistance structure, it includes: steel framework, it includes longitudinal reinforcement and stirrup;Conical cushion block, its bottom has U-shaped groove to and stirrup adaptation;Its bottom two side surfaces are also provided with wire slot;Wire, it is threaded wire slot, and is tied on corresponding longitudinal reinforcement.Wire for conical concrete cushion block mould, it includes: first body and second body, two are spliced into a shell with conical groove in middle part;Coarse steel bar, it is threaded in the top of first body and second body;Thin iron wire, it is threaded in the middle part of first body and second body, and it is parallel to coarse steel bar, it passes through conical groove inner wall;Base, it has round groove in middle part to place first body and second body.The utility model can guarantee the thickness of protective layer, avoid the thickness of protective layer problem influence the appearance of clear water concrete.

Description

Technical Field

[0001] This utility model relates to the field of fair-faced concrete, and in particular to a crack-resistant structure for fair-faced concrete.

[0002] This utility model also relates to a conical concrete block mold. Background Technology

[0003] Fair-faced concrete emphasizes the inherent texture of the concrete itself, using its outer surface after demolding as the building's exterior. This outer surface is the outer surface of the concrete protective layer. If the protective layer is too thin, internal cracks around the stirrups or longitudinal reinforcement will extend to the outer surface, causing cracks on the fair-faced concrete surface. Furthermore, the stirrups or longitudinal reinforcement are more prone to rusting, which can cause the concrete to crack. Using ordinary concrete blocks can result in a ring of cracks around the surface of the block. For example, Chinese Utility Model Patent Publication No. CN208202348U discloses a method for manufacturing embedded C... The mold for the precast concrete pad block of L-shaped space frame slab includes a trapezoidal cone set on the CL space frame slab, the trapezoidal cone being located at the intersection of the steel wires of the outer mesh of the space frame slab; the lower opening of the trapezoidal cone is fastened to the space frame slab, the outer diameter of the upper opening of the trapezoidal cone is smaller than the outer diameter of the lower opening of the trapezoidal cone; multiple slots are spaced apart along the circumference of the outer wall of the trapezoidal cone, the slots extending to the lower opening of the trapezoidal cone, the steel wires of the outer mesh of the space frame slab are embedded in the slots, the mating surface of the frustum-shaped pad block made by it is too large, which easily forms a noticeable gap around the mating surface, which easily affects the appearance and texture of the fair-faced concrete. Utility Model Content

[0004] One objective of this invention is to provide a crack-resistant structure for fair-faced concrete that ensures the thickness of the protective layer. After the main body of the fair-faced concrete is formed, the interface between the conical concrete pad and the fair-faced concrete is only a small point on the outer surface, thereby avoiding affecting the appearance and texture of the fair-faced concrete and preventing the formation of cracks at the interface.

[0005] Another objective of this invention is to provide a conical concrete block mold that facilitates the production of the aforementioned conical concrete blocks.

[0006] Regarding the technical topic of crack-resistant fair-faced concrete structures, it includes: A steel reinforcement cage, which includes longitudinal bars and stirrups; The conical pad has a U-shaped groove at the bottom to fit the stirrup; the two sides of its bottom are also provided with wire ties. When it is installed on the side of the stirrup, its conical part abuts against the side mold and corresponds to the height position of the middle longitudinal bar. When it is installed on the bottom surface of the stirrup, its conical part abuts against the bottom mold and corresponds to the plane position of the bottom longitudinal bar. The binding wire is threaded through a binding groove and tied to the corresponding longitudinal reinforcement.

[0007] With this structure, the conical spacer ensures the thickness of the protective layer during pouring, prevents internal cracks around the reinforcing bars from extending to the surface, and also helps prevent the reinforcing bars from rusting. The tie wire is tied to the longitudinal bars, preventing the stirrups and longitudinal bars from shifting and ensuring the integrity of the reinforcing bar skeleton. When installing the conical spacer, the reinforcing bars can be tied on the reinforcing bar jig first, and then the whole structure can be hoisted into the formwork. The tie wire groove provides the tying position for the tie wire, preventing the tie wire from slipping off. Double tie wire tying helps to form symmetrical tying, so as to ensure that the tying is firm.

[0008] As a further improvement to the crack-resistant structure of fair-faced concrete, the surface of the conical pad is provided with threads.

[0009] With this structure, the threaded surface allows for a tighter bond between the pad and the fair-faced concrete.

[0010] As a further improvement to the crack-resistant structure of fair-faced concrete, the conical pad is formed by concrete casting.

[0011] With this structure, the concrete has good moldability and can be made using the same type of concrete as fair-faced concrete to maintain the same thermal expansion and contraction properties.

[0012] As a further improvement to the crack-resistant structure of fair-faced concrete, the wire groove is a C-shaped groove.

[0013] With this structure, the C-groove prevents the binding wire from slipping off.

[0014] Regarding the technical topic of conical concrete block molds, it includes: The first body and the second body are combined to form a shell with a conical groove in the middle; Thick steel bars are inserted at the top of the first and second bodies, pressing out U-shaped notches in the shell; A thin iron wire is threaded through the middle of the first body and the second body, and parallel to the thick steel bar. It is located in a section of a conical groove, with part of the cross-section of this section in the groove and the other part in the inner wall of the conical groove. The base has a circular groove in its middle to accommodate a first body and a second body, and the outer wall of the shell formed by the first body and the second body is adapted to the inner wall of the circular groove.

[0015] With this structure, after concrete is poured into the mold, excess slurry is pressed out with thick steel bars and thin iron wires, waiting for the molding to be completed and the mold to be removed. The base prevents the first and second bodies from separating during the pouring process. When removing the mold, the base is removed first, and then the first and second bodies are separated to complete the demolding.

[0016] As a further improvement to the conical concrete pad mold, the thick steel bar is made of plain round steel bar.

[0017] With this structure, the surface of the plain round steel bar is smooth, making it easy to press out a smooth, arc-shaped notch.

[0018] As a further improvement to the conical concrete block mold, a spiral groove is formed on the inner wall of the conical groove.

[0019] This structure facilitates the formation of an external thread surface after casting.

[0020] As a further improvement to the conical concrete block mold, the first and second bodies are made using steel or wooden molds.

[0021] This structure makes it easier to use steel and wooden molds as templates.

[0022] This invention can ensure the thickness of the protective layer. After the main body of fair-faced concrete is formed, the interface between the conical concrete pad and the fair-faced concrete is only a small point on the outer surface, thereby avoiding affecting the appearance and texture of the fair-faced concrete and preventing the generation of cracks at the interface. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment.

[0024] Figure 2 This is a schematic diagram of the conical pad.

[0025] Figure 3 This is a schematic diagram of the mold in its closed state.

[0026] Figure 4 This is a schematic diagram of the mold in the open state.

[0027] Attached reference numerals: 1. Reinforcing steel cage; 101. Longitudinal reinforcement; 102. Stirrups; 2. Conical pad; 201. U-shaped groove; 202. Wire binding groove; 3. Side mold; 4. Bottom mold; 5. Binding wire; 6. First body; 7. Second body; 8. Conical groove; 9. Coarse steel bar; 10. U-shaped notch; 11. Thin iron wire; 12. Base; 13. Circular groove; 14. Spiral groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1 like Figures 1-2As shown, a crack-resistant fair-faced concrete structure includes: The steel reinforcement cage 1 includes longitudinal bars 101 and stirrups 102; The conical pad 2 has a U-shaped groove 201 at the bottom to fit the stirrup 102; the two sides of its bottom are also provided with wire binding grooves 202. When it is installed on the side of the stirrup 102, its conical part abuts against the side mold 3 and corresponds to the height position of the middle longitudinal rib 101. When it is installed on the bottom surface of the stirrup 102, its conical part abuts against the bottom mold 4 and corresponds to the plane position of the bottom longitudinal rib 101. The tie wire 5 is threaded through the tie wire groove 202 and tied to the corresponding longitudinal reinforcement 101.

[0030] With this structure, the conical pad 2 ensures the thickness of the protective layer during the pouring process, prevents internal cracks around the reinforcing bars from extending to the surface, and also helps prevent the reinforcing bars from rusting. The tie wire 5 is tied to the longitudinal reinforcement 101 to prevent the stirrups and longitudinal reinforcement from shifting, ensuring the integrity of the reinforcing bar skeleton. When installing the conical pad 2, the reinforcing bars can be tied on the reinforcing bar jig first, and then the whole structure can be hoisted into the formwork. The tie wire groove 202 provides the tying position for the tie wire to prevent the tie wire from slipping. Double tie wire tying helps to form symmetrical tying to ensure that the tying is firm.

[0031] In this embodiment, the surface of the conical pad 2 is provided with threads.

[0032] With this structure, the threaded surface allows for a tighter bond between the concrete pad and the fair-faced concrete.

[0033] In this embodiment, the conical pad 2 is formed by concrete casting.

[0034] With this structure, the concrete has good moldability and can be made using the same type of concrete as fair-faced concrete to maintain the same thermal expansion and contraction properties.

[0035] In this embodiment, the wire binding groove 202 is a C-shaped groove.

[0036] With this structure, the C-groove can prevent the tie wire 5 from slipping off.

[0037] Example 2 like Figures 3-4 As shown, a conical concrete block mold includes: The first body 6 and the second body 7 are assembled into a shell with a conical groove 8 in the middle; The thick steel bar 9 is inserted through the top of the first body 6 and the second body 7, and it presses out a U-shaped notch 10 on the shell. A thin iron wire 11 is threaded through the middle of the first body 6 and the second body 7 and parallel to the thick steel bar 9. It is located in a section of the conical groove 8. Part of the cross section is in the groove of the conical groove 8 and the other part is in the inner wall of the conical groove 8. The base 12 has a circular groove 13 in its middle to accommodate the first body 6 and the second body 7. The outer wall of the shell formed by the first body 6 and the second body 7 is adapted to the inner wall of the circular groove 13.

[0038] With this structure, after concrete is poured into the mold, the excess slurry is pressed out with thick steel bars 9 and thin iron wires 11, and the mold is ready for demolding. The base 12 prevents the first body 6 and the second body 7 from separating during the pouring process. When demolding, the base 12 is removed first, and then the first body 6 and the second body 7 are separated to complete the demolding.

[0039] In this embodiment, the thick steel bar 9 is a plain round steel bar.

[0040] With this structure, the surface of the plain round steel bar is smooth, making it easy to press out a smooth, arc-shaped notch.

[0041] In this embodiment, a spiral groove 14 is formed on the inner wall of the conical groove 8.

[0042] This structure facilitates the formation of an external thread surface after casting.

[0043] In this embodiment, the first body 6 and the second body 7 are made using steel molds or wooden molds.

[0044] This structure makes it easier to use steel and wooden molds as templates.

[0045] This invention can ensure the thickness of the protective layer. After the main body of fair-faced concrete is formed, the interface between the conical concrete pad and the fair-faced concrete is only a small point on the outer surface, thereby avoiding affecting the appearance and texture of the fair-faced concrete and preventing the generation of cracks at the interface.

[0046] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several equivalent substitutions or obvious modifications can be made without departing from the concept of the present invention, and all such modifications, with identical performance or use, should be considered within the protection scope of the present invention.

Claims

1. A crack-resistant structure for fair-faced concrete, characterized in that... include: The steel reinforcement cage (1) includes longitudinal bars (101) and stirrups (102); The conical pad (2) has a U-shaped groove (201) at the bottom to fit the stirrup (102); the two sides of its bottom are also provided with wire grooves (202). When it is installed on the side of the stirrup (102), its conical part abuts against the side mold (3) and corresponds to the height position of the middle longitudinal bar (101). When it is installed on the bottom surface of the stirrup (102), its conical part abuts against the bottom mold (4) and corresponds to the plane position of the bottom longitudinal bar (101). The tie wire (5) is threaded through the tie wire groove (202) and tied to the corresponding longitudinal reinforcement (101).

2. The crack-resistant structure of fair-faced concrete according to claim 1, characterized in that... The tapered pad (2) has threads on its surface.

3. The crack-resistant fair-faced concrete structure according to claim 1 or 2, characterized in that... The conical pad (2) is formed by concrete casting.

4. The crack-resistant fair-faced concrete structure according to claim 1, characterized in that... The wire binding groove (202) is a C-shaped groove.

5. A conical concrete block mold, characterized in that... include: The first body (6) and the second body (7) are assembled into a shell with a conical groove (8) in the middle; A thick steel bar (9) is inserted at the top of the first body (6) and the second body (7), and it presses out a U-shaped notch (10) on the shell. A thin iron wire (11) is threaded through the middle of the first body (6) and the second body (7) and parallel to the thick steel bar (9). It is located in a section of the conical groove (8). Part of the cross section is located in the groove of the conical groove (8) and the other part is located in the inner wall of the conical groove (8). The base (12) has a circular groove (13) in its middle to accommodate the first body (6) and the second body (7), and the outer wall of the shell formed by the first body (6) and the second body (7) is adapted to the inner wall of the circular groove (13).

6. The conical concrete block mold according to claim 5, characterized in that... The thick steel bar (9) is a plain round steel bar.

7. The conical concrete block mold according to claim 5, characterized in that... A spiral groove (14) is formed on the inner wall of the conical groove (8).

8. The conical concrete block mold according to claim 5 or 7, characterized in that... The first body (6) and the second body (7) are made using steel molds or wooden molds.

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