Device for reducing bubble generation rate of concrete forming surface

Abstract

The utility model relates to the field of constructional engineering, and particularly discloses a device for reducing the bubble generation rate of a concrete forming surface. The air guide pipe is reserved in the aluminum formwork, the air holes are formed in the periphery of the air guide pipe, when concrete is poured into the aluminum formwork in a layered mode, a vibrating rod is used for vibrating the concrete, and at the moment, part of air reserved in the concrete moves upwards and escapes; part of air flows into the air guide pipe from the air holes under the action of concrete pressure and the vibrating rod, air remaining in concrete is effectively helped to flow out quickly, bubbles are effectively prevented from being formed on the surface of a formed concrete structure by the remaining air, and the device is convenient in material taking, simple in use method, free of influence of the construction environment, simple in construction and low in cost. The construction efficiency can be effectively improved, the construction period is shortened, the air guide pipe can be repeatedly used, the bubble repairing cost in the later device decoration project period is fully reduced, the project cost is effectively reduced, and the project progress is accelerated.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction engineering, and in particular relates to a device for reducing the bubble generation rate on the concrete molding surface. Background Art

[0002] During the construction of a building, in order to shape the concrete, construction workers will use aluminum formwork to build concrete pouring formwork, pour concrete inside the formwork, and wait for the concrete to cool and take shape. The construction process of aluminum formwork can be used for various large and medium-sized concrete structures with complex shapes. It has a strong bearing capacity, which is incomparable to wooden formwork. It is a highly comprehensive, socially wide and professional system engineering, which can be widely used in construction projects with large building areas and many standard floor units.

[0003] In the actual construction process, after removing the aluminum formwork on the outside of the concrete, you can see that there are many bubble holes on the surface of the concrete structure. These bubbles are formed by air retained in the poured concrete and unable to flow out. These bubble pits have a great impact on the later decoration and renovation projects, which will not only increase the cost of decorative surface base treatment, but also cause cost waste. When pouring general concrete structures, vibrators are used to vibrate the concrete so that the concrete can fully fill the internal space of the mold, which can also accelerate the outflow of air inside the concrete to a certain extent. However, if it is necessary to reduce the air retained in the concrete as much as possible, it is necessary to extend the working time of the vibrator, which will undoubtedly further increase the construction period and lead to an extension of the construction period. If the vibrator only runs for the general construction time, the air that does not have time to flow out will form bubbles on the surface of the molded concrete building. Utility Model Content

[0004] The utility model aims to provide a device for reducing the bubble generation rate on the concrete molding surface, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for reducing the bubble generation rate on the concrete molding surface, comprising:

[0007] An air guide tube, wherein air holes are provided on the surface of the air guide tube, and a hand ring is fixedly connected to the upper end of the air guide tube.

[0008] Preferably, the air duct has a diameter of seventy-five millimeters, a wall thickness of three millimeters, a length of three meters, and an air hole diameter of eight millimeters.

[0009] Preferably, the air holes are arranged in multiple layers on the surface of the air guide tube, and a plurality of the air holes in each layer are arranged in a circular array on the air guide tube, and the distance between the air holes in each layer is set to 200 millimeters.

[0010] Preferably, the handle ring is made of round steel with a diameter of eight millimeters.

[0011] Preferably, the air guide pipe is made of galvanized steel pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model retains an air guide tube in the aluminum template and opens air holes around the air guide tube. When pouring concrete in layers into the aluminum template, a vibrator is used to vibrate the concrete. At this time, part of the air retained in the concrete is displaced upward and escapes, and part of the air flows from the air holes to the inside of the air guide tube under the action of the concrete pressure and the vibrator, which effectively helps the air retained in the concrete to flow out quickly and effectively avoids the retained air from forming bubbles on the surface of the formed concrete structure. In addition, the device is easy to obtain materials and is simple to use. It is not affected by the construction environment and is simple to construct. It can effectively improve the construction efficiency and shorten the construction period. The air guide tube can be reused many times, which fully reduces the cost of repairing bubbles during the later installation and decoration project, effectively reduces the project cost, and improves the project progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the air guide tube structure of the utility model;

[0015] In the figure: 1. air guide tube; 2. air hole; 3. hand ring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Example:

[0018] See also Figure 1 As shown, a device for reducing the bubble generation rate on the concrete molding surface comprises:

[0019] An air duct 1 is provided with air holes 2 on its surface, a hand ring 3 is fixedly connected to the upper end of the air duct 1, the diameter of the air duct 1 is seventy-five millimeters, the wall thickness is three millimeters, and the length is three meters. In order to increase the durability of the air duct 1, the air duct 1 adopts a galvanized steel pipe, and air holes 2 are provided on the surface of the air duct 1, the diameter of the air holes 2 is eight millimeters, and the air holes 2 are arranged in multiple layers on the surface of the air duct 1, and a plurality of the air holes 2 in each layer are arranged in a circular array on the air duct 1, and the spacing between the air holes 2 in each layer is set to two hundred millimeters. A hand ring 3 is fixedly connected to the upper end of the air duct 1, and the hand ring 3 adopts round steel with a diameter of eight millimeters, and construction personnel can pull the air duct 1 upward through the hand ring 3.

[0020] A method for using a device for reducing the bubble generation rate on the concrete molding surface specifically comprises the following steps:

[0021] S1. During the concrete pouring operation, multiple air guide tubes 1 are evenly spaced inside the concrete, and the spacing between the air guide tubes 1 is 2.5 meters;

[0022] S2. During the concrete pouring construction, pour the concrete layer by layer and vibrate the concrete layer by layer using a vibrating rod, controlling the vibration speed so that the bubbles in the concrete are discharged along the air guide pipe 1;

[0023] S3, as the concrete is poured and vibrated layer by layer, the air guide tube 1 is gradually lifted up until the concrete pouring and vibration are completed, and then the air guide tube 1 is completely pulled out;

[0024] S4. Clean the airway tube 1 and keep it for next use.

[0025] As can be seen from the above, after the air guide tube 1 is placed inside the concrete, a vibrator is used to vibrate the concrete, and part of the bubbles retained in the concrete are displaced upward and escape from the concrete, and part of the bubbles enter the air guide tube 1 through the pores 2 after being displaced. Compared with the traditional method of only using a vibrator to remove bubbles, the vibrator can only help the retained air move, but even if the air retained at the bottom of the concrete is displaced a certain distance, it is difficult to move upward to contact the air, while the air guide tube 1 sandwiched in the concrete is connected to the air, and the retained air displaced by the vibrator does not need to be displaced a long distance, and will flow into the air through the pores 2 and the air guide tube 1 after moving only a certain distance, which can further reduce the air mixed in the concrete, and also can reduce the number of bubble holes on the surface of the cast concrete after molding.

[0026] In order to verify the actual use effect of the utility model, firstly, the poured concrete buildings without the device are inspected, and 180 surface points of 3 buildings under construction are selected for inspection. The results are shown in the following table:

[0027] Table 1

[0028]

[0029] As can be seen from Table 1, the bubble generation rate of concrete surface in aluminum formwork construction is 62.77%, which is higher than the construction requirements of the construction unit, and the construction quality needs to be improved.

[0030] In other parts of the above three buildings under construction, the device of the utility model was used to cast the concrete structure, and 150 surface points were randomly selected on the surface of the concrete structure for inspection. The results are shown in the following table:

[0031] Table 2

[0032]

[0033] As can be seen from Table 2, the bubble generation rate on the concrete surface of the aluminum formwork construction is 19.3%, and there are 29 unqualified points. The average bubble generation rate on the concrete surface is much lower than the average bubble generation rate on the surface of concrete buildings that do not use this device, which is better than the construction requirements of the construction unit and has a high construction quality.

[0034] The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0035] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0039] In the drawings of the embodiments disclosed by the present invention, only the structures related to the embodiments disclosed by the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

Claims

1. A device for reducing the bubble generation rate on the concrete molding surface, characterized in that: include: An air guide tube (1), wherein an air hole (2) is provided on the surface of the air guide tube (1), and a hand ring (3) is fixedly connected to the upper end of the air guide tube (1).

2. The device for reducing the bubble generation rate on the concrete molding surface according to claim 1, characterized in that: The diameter of the air guide tube (1) is 75 millimeters, the wall thickness is 3 millimeters, and the length is 3 meters. The diameter of the air hole (2) is 8 millimeters.

3. The device for reducing the bubble generation rate on the concrete molding surface according to claim 2, characterized in that: The air holes (2) are arranged in multiple layers on the surface of the air guide tube (1), and a plurality of the air holes (2) in each layer are arranged in a circular array on the air guide tube (1), and the spacing between the air holes (2) in each layer is set to 200 millimeters.

4. The device for reducing the bubble generation rate on the concrete molding surface according to claim 3 is characterized in that: The handle ring (3) is made of round steel with a diameter of eight millimeters.

5. The device for reducing the bubble generation rate on the concrete molding surface according to claim 4, characterized in that: The air guide pipe (1) is made of a galvanized steel pipe.

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