JP4499435B2 - Container for concrete repair agent and method for producing the same - Google Patents

Description

  The present invention relates to a concrete self-repair technology for repairing a crack generated in concrete with the concrete itself, and in particular, it includes a repair agent for repairing the crack and is embedded in the concrete in advance to break when the crack occurs. The present invention relates to a container body for releasing a repair agent into concrete and a method for producing the same.

For example, Patent Document 1 discloses a self-repair method in which cracks (cracks) generated in concrete are repaired by the concrete itself. This is because a pipe network formed of a brittle material equivalent to concrete is built into the concrete, and the repair liquid can be passed through the pipe network so that the repair liquid can flow. It breaks naturally and the repair liquid flows out from there and hardens, so that the cracks are repaired automatically.
Japanese Patent Laid-Open No. 10-184027

  In Patent Document 1, it is said that the pipeline network that fills the repair liquid is formed of a brittle material equivalent to concrete, such as water glass, hardened cement, paraffin wax, various resins, and the like. No mention is made of or manufacturing methods.

  In view of the above circumstances, an object of the present invention is to provide an effective and appropriate container body for embedding a repair agent and preliminarily embedded in concrete, and a method for manufacturing the same.

The invention according to claim 1 is a concrete repairing agent that includes a repairing agent for repairing cracks generated in concrete and is embedded in the concrete in advance, so that it breaks when cracking occurs and releases the repairing agent into the concrete. A core body that is formed by being wound into a pipe shape or a capsule shape , the shape of which is maintained so as to secure an accommodating space in which a repair agent can be contained, and which can be deformed when a crack occurs, It is formed of a coating layer that is formed on the surface layer portion of the core material, holds the repair agent in the accommodation space, and breaks due to deformation of the core material when cracking occurs and can release the repair agent from the accommodation space. To do.

  The invention of claim 2 is characterized in that the core material is formed of any one of a net-like body, a spiral body, a woven fabric, a non-woven fabric, and a paper material.

  The invention of claim 3 is characterized in that the coating layer is formed of a heat melting material having a low melting point.

  The invention of claim 4 is a method of manufacturing the container body described above, wherein a core material is wound around the jig, a coating layer is formed on the surface layer of the core material, and then the jig is removed. It is characterized by this.

  The invention of claim 5 is a method for producing the container body according to any one of claims 1 to 3, wherein a core material is wound around a jig, and a coating layer is formed on a surface layer portion of the core material. After forming, the whole is embedded in concrete, and then the jig is removed.

  The container body of the present invention is maintained in shape by the core material, and the repair agent is held by the coating material, and is stably embedded in the concrete in that state, and when a crack occurs, the core material is in that position. Is deformed, the coating material is broken, and the contained repair agent can be surely released. In particular, by using any one of a net-like body, a spiral body, a woven fabric, a non-woven fabric, and a paper material as the core material, it can be easily manufactured at low cost. In addition, by forming the coating layer from a heat-melting material having a low melting point, it is possible to release the repair agent by breaking the container body by heating.

  The manufacturing method of the present invention can be manufactured easily and accurately because the coating layer is formed while holding the shape of the core material with a jig. Moreover, it can prevent that a container body is damaged in the middle of the embedment work to concrete by extracting a jig | tool after embed | buying in concrete with a jig | tool attached.

A first embodiment of the present invention is shown in FIGS. The container body A of the first embodiment is in a tube shape (pipe shape), and a coating layer 2 is formed on the entire surface layer portion using a net-like body processed into a tube shape (that is, a mesh) as a core material 1. Thus, a storage space in which a repair agent can be contained is secured. As the mesh body as the core material 1, for example, a structure in which various fibers are assembled in a hollow braid shape can be suitably employed. In order to process this into a tube shape, for example, as described later, the jig 3 What is necessary is just to extract the jig | tool 3 after winding around. As the coating material for forming the coating layer 2, various brittle materials such as paraffin can be suitably employed.

In such a container body A, as shown in FIG. 1 (b), each cell of the core material 1 is closed by the coating material forming the coating layer 2, so that the tubular shape is maintained. Although it is possible to enclose the repairing agent inside without any trouble, when cracking occurs in the concrete in which the container body A is embedded, the core material 1 is deformed so as to extend in the axial direction at that position. As shown in the figure, each of the meshes spreads in the lateral direction and the coating layer 2 that has blocked it breaks naturally, from which the repair agent is released into the concrete.

  According to the container body A of the present embodiment, the strength of the core material 1 and its deformation characteristics, the strength of the coating layer 2 and the thickness thereof, etc. are set appropriately so that the whole can be embedded in the concrete without any trouble. Therefore, the repair agent can be stably held in the concrete for a long period of time. When a crack is generated in the concrete and a certain level of stress is generated in the container body at that position, the container body A reacts sensitively and the coating layer 2 is formed at the crack generation position as described above. It breaks reliably, whereby the repair agent is released promptly and reliably and an excellent self-repair effect is obtained.

  FIG. 3 shows the container body B of the second embodiment together with its manufacturing procedure. The container body B of the second embodiment is formed by forming a net-like body, a woven fabric, a non-woven fabric, and a paper material to be the core material 1 into a sheet shape, and wrapping it around the rod-shaped jig 3 so that the entire surface is formed. After the coating layer 2 is formed, the jig 3 is extracted.

  Moreover, FIG. 4 shows the container body C of 3rd Embodiment with the manufacturing procedure. In the container body C of the third embodiment, a wire such as a metal wire or an octopus thread is spirally wound around the jig 3, and the coating layer 2 is formed on the entire surface using such a spiral body as the core material 1. Thereafter, the jig 3 is manufactured by removing the jig 3.

  In the container bodies B and C of the second to third embodiments, as in the container body A of the first embodiment, the core material 1 has an appropriate strength and deformation performance, and the coating layer 2 when cracking occurs. However, it can be surely broken at that position to obtain an excellent self-repair effect.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, Of course, various design change and application are possible according to the use, objective, etc. of the concrete made into object. Needless to say.

  For example, the container bodies A to C of the above embodiments are all tube-shaped, but the present invention can be similarly applied to a capsule-shaped container body that encloses a repair agent.

  As the core material, any material other than the net-like body, spiral body, woven fabric, non-woven fabric, and paper material exemplified in the above embodiments may be adopted as long as appropriate strength and deformation performance can be secured. Is possible.

  The coating material for forming the coating layer is not particularly limited as long as it has moderate brittleness, and various polymers, PVA fibers, and the like can be suitably employed in addition to the paraffin exemplified above. In particular, if the coating layer is formed of a heat-melting material having a low melting point, the coating layer can be melted and broken by heating the surroundings when cracks are generated.

  Furthermore, the manufacturing method of the present invention is not limited to the above embodiment, and an appropriate manufacturing method can be employed according to the material and configuration of the core material and the coating layer. In particular, in the case where the container body is embedded with concrete, there is a concern about the damage thereof, while the jig 3 used in the second to third embodiments is still attached (that is, FIG. 3B or FIG. 4). It is conceivable to embed in concrete (with the state shown in (b)), and then remove the jig 3 and inject a repair agent. By doing so, it is possible to effectively prevent the container body from being damaged during the work.

It is a conceptual diagram of the container which is 1st Embodiment of this invention. It is a figure which shows the behavior at the time of a crack generation similarly. It is a figure which shows the container body which is 2nd Embodiment of this invention, and its manufacture procedure. It is a figure which shows the container body which is 3rd Embodiment of this invention, and its manufacturing procedure.

Explanation of symbols

A, B, C Container body 1 Core material 2 Coating layer 3 Jig

Claims (5)

It is a container of a concrete repair agent that contains a repair agent for repairing cracks occurring in concrete and is embedded in the concrete in advance, so that it breaks when cracks occur and releases the repair agent into the concrete. Formed on the surface layer of the core material, which is formed by winding in a pipe shape or capsule shape, maintaining the shape so as to secure a storage space in which the repair agent can be contained, and deformable when cracks occur A container for a concrete repair agent comprising a coating layer that holds the repair agent in the housing space and breaks due to deformation of the core material when cracks occur and can release the repair agent from the housing space .   2. The container for a concrete repair agent according to claim 1, wherein the core material is made of any one of a net-like body, a spiral body, a woven fabric, a nonwoven fabric, and a paper material.   3. The concrete repair agent container according to claim 1, wherein the coating layer is made of a heat melting material having a low melting point.   It is a method of manufacturing the container body according to any one of claims 1 to 3, wherein a core material is wound around a jig, and a coating layer is formed on a surface layer portion of the core material. A method for producing a container body, wherein the container body is extracted.   It is the method of manufacturing the container body in any one of Claims 1-3, Comprising: After forming a core material around a jig | tool, and forming the coating layer in the surface layer part of the core material, the whole Embedded in concrete, and after that, the jig is removed and then a method for producing a container body.

Images