JPH0431240Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a reinforcing material for sealing materials used in mortar filling waterproofing methods and the like in joints of buildings.

(Prior art) Conventionally, waterproofing work for the joints of building components, such as installing sashes on windows and doors, was done by completely filling with mortar or using silicone-based, polysulfide-based, or polyurethane-based sealants. .

(Problem that the invention aims to solve) However, all of these sealants have low durability, with a lifespan of only 5 to 10 years at most, and in severe cases, water could leak within a year.
Furthermore, even when filling with mortar, sagging occurs during the filling process due to the fluidity of the mortar, making it impossible to completely seal the joint. In that case, it is necessary to replenish and load mortar, but it is difficult to completely fill it.

In view of these conventional drawbacks, the present invention provides a sealing reinforcing material that can efficiently, quickly, stably and reliably seal joints of buildings.

In other words, the present invention improves the workability, workability, and retention of sealing materials such as mortar,
This allows the sealant to perform its functions reliably.

According to the present invention, the sealing material can be reliably held regardless of the shape of the connecting portion, and thereby a quick and reliable seal can be achieved.

(Means for Solving the Problems) In order to achieve the above object, the present invention employs the following configuration. That is, it is a sealing reinforcing material for joint parts, which is a three-dimensional entangled body made of synthetic fibers with a diameter of 0.1 to 0.9 mm, the intertwined points of which are joined, and the porosity is 85 to 99%.

The sealing reinforcing material of the present invention is a reinforcing material for a sealing material, and when sealing is performed, it is loaded in advance into a sealing location, and then the loading location is filled with a sealing material such as mortar. In other words, the sealing reinforcing material of the present invention works synergistically with the sealing material to achieve its purpose.

In the present invention, a three-dimensional entangled body made of synthetic fibers has a three-dimensional crimp,
There are no restrictions on the size or the shape of the crimp, but any crimp may be used as long as it ultimately achieves a porosity of 85 to 99%.

Examples of such synthetic fiber materials include fibers made of synthetic resins such as polyamide, polyester, polyolefin, polyvinyl chloride, polyvinyl alcohol, and polyvinylidene, and mixed fibers thereof. Among these fibers, alkali resistance,
Polyamide is preferred from the viewpoint of reinforcing properties.

Such fibers have an average thickness of 0.1 to 0.9 in diameter.
mm thickness is used. The fibers that make up the fiber entanglement are used to reinforce the sealing properties of mortar and concrete, and if these sealants cause sagging or clogging, the present invention is not recommended. unable to achieve the goal.

In other words, the fibers used in this invention have good permeability through mortar and concrete, and have enough rigidity and elasticity (compression recovery) to maintain their shape without fading due to their flow. It is necessary to have a

The above-mentioned fiber thickness is an essential condition to meet such requirements.

In other words, it was possible to achieve the above conditions for the first time by using a fiber entangled body in which such thick fibers were entangled with large voids. This cannot be achieved at all with a cloth made of extremely thin fibers intertwined at high density. is used by inserting it into the gap between the joints. Therefore, one that is slightly larger than the gap between the joints is selected, compressed, and loaded.
After insertion, the entire gap must be filled with the elasticity of the fibers. Fibers with a diameter of less than 0.1 mm have a low compression recovery rate and, for example, have a low ability to transmit vibrations from a vibrator when loading mortar.
If it exceeds 0.9 mm, the compressive elasticity will be too high, making it difficult to insert the material into the gap between the joints, and also making it difficult to insert the material into the gap between the joints. Furthermore, since the contact area between the fiber entangled body and the joint portion is reduced, the adhesion is also affected, and eventually defects such as the occurrence of cracks appear.

Note that fibers having a thickness outside the above-mentioned range may be included as long as the purpose of the present invention is not impaired.

The effects of the present invention can be achieved whether such synthetic fibers are long fibers, short fibers, or a mixture thereof;
Preferably, the fiber length is at least 25 mm on average, and is selected from the viewpoint of mechanical properties. Particularly preferably, the entangled body is composed mainly of fibers having a diameter of 250 mm or less.

The entangled body of the present invention is characterized in that it is three-dimensionally entangled. Such entangled bodies can be made by applying the synthetic fibers in advance by a false twist heating method, a rope heating method, a latent crimp method,
This can be easily achieved by crimping by a conventional crimping method such as a scratching method. Of course, such a crimp may be applied by heating, fluid treatment, etc. after forming the entangled body.

Among such crimp imparting methods, methods for imparting a three-dimensional crimp such as a false twist heating method and a rope heating method are preferably applied.

Such fibers are formed into a web by conventional web manufacturing methods, such as a lock processing machine.

Here, pressurizing conditions are selected so that the web has a desired porosity, and then the intertwined portions are joined using an adhesive, heat fusion, or the like.

Such bonding methods include a method in which fibers made of a low melting point material are mixed with the entangled fibers as a bonding agent, entangled and then heated and melted, and a method in which an ordinary adhesive is used, for example, by spraying an adhesive solution. Examples include a method of applying by a method such as a method, a dipping method, and the like.

As such an adhesive, a thermosetting adhesive is preferably selected from the viewpoint of adhesive strength and compressive elasticity.

It is important that the entangled body thus obtained has a porosity of 85 to 99%.

That is, if it is less than 85%, a sufficient amount of sealing material cannot be loaded into the void, and therefore neither a sufficient sealing effect nor a sufficient reinforcing effect can be achieved.
When the porosity exceeds 99%, the volume occupied by the fibers becomes small and the sealant cannot be held sufficiently, cracks are likely to occur and the sealing effect is reduced.

Such porosity is determined by the following formula.

Porosity (%) = (A-B)/A [A: apparent volume of entangled body, B: occupied volume of fiber].

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a perspective view showing a three-dimensional entangled body 1 of the present invention, and FIG. 2 is a cross-sectional view showing an example in which the entangled body of the present invention is used in a waterproofing method for sash.

It can be seen from FIG. 1 that the fiber entangled body 1 of the present invention is composed of three-dimensional entangled synthetic fibers 2 and is joined at entangled points 3.

In the example of use for the sash 8 in Fig. 2, a polymer cement paste 7 is applied as a mortar adhesion enhancer on the surface of the concrete 4, the fiber entangled body 1 of the present invention is loaded thereon, and the mortar 6 is further loaded. , are integrally cured to form a sealing layer.

Furthermore, if necessary, the mortar seal can be sealed with a joint sealing material 5 for primary waterproofing.

(Effects of the invention) This invention fully demonstrates the function of sealing materials used in joints of buildings, prevents cracks in mortar, and significantly improves water leakage prevention effect, reinforcing effect, and workability. It is.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a three-dimensional entangled body 1 of the present invention, and FIG. 2 is a cross-sectional view showing an example in which the entangled body of the present invention is used in a waterproofing method for sash. In the figure, 1... fiber entangled body, 2... synthetic fiber, 3
... Entanglement point, 4 ... Concrete, 5 ... Sealing material for joint parts, 6 ... Mortar, 7 ... Mortar adhesion reinforcement material, 8 ... Satsushi.

Claims (1)

[Scope of utility model registration request] A sealing reinforcing material for joint parts, which is a three-dimensional entangled body made of synthetic fibers with a diameter of 0.1 to 0.9 mm, the intertwined points of which are joined, and the porosity is 85 to 99%.