JP2706872B2 - Forming method of construction surface with cement kneaded material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for easily and surely forming a concave portion having a large anchoring effect on a surface layer of a construction surface made of a cement kneaded material such as a skeleton made of concrete or a base made of mortar.

[0002]

2. Description of the Related Art Consider a case in which a tile is stuck on a skeleton wall made of concrete using mortar and a tile wall is constructed. In order to construct such a tile wall, usually, a base mortar is applied to a concrete skeleton wall several times to form a base mortar layer,
The method of applying tiles by pressing a tile with a mortar attached on the back side to the underlying mortar layer or pressing the tile on the applied mortar layer overlaid on the underlying mortar is adopted. ing.

Prior to construction, measures are generally taken to prevent the water in the mortar from being unnecessarily removed, such as pre-wetting the concrete frame walls and the water-absorbing tiles with water.

By the way, the strength of the tile wall surface constructed as described above depends on the strength between the frame wall surface and the underlying mortar layer.
It has an important correlation with the adhesive strength between the underlying mortar layer and the applied mortar layer and between the applied mortar layer and the tile. Therefore, in order to increase the adhesive strength at each boundary surface, it is desirable to make the surfaces non-smooth, specifically, to form an uneven structure.

[0005] Since a dovetail-shaped convex portion is usually provided on the back surface of the tile, a sufficient strength can be expected between the tile and the mortar layer. Therefore, if it is intended to increase the bonding strength between another boundary surface, for example, the base mortar layer and the adhesive mortar layer, as shown in FIG.
After the base mortar layer 20 is formed on the body wall surface 10 and before it is hardened, the string-shaped concave forming material 40 is embedded in the surface layer of the base mortar layer 20 and then peeled off to form the base mortar layer 20. Means of forming a continuous groove-like concave portion 50 on the surface may be considered.

[0006]

However, when the above method was attempted, when the string-shaped concave forming material 40 was peeled off from the underlying mortar layer 20, as shown in FIG.
7 protrudes from the edge of the opening of the concave portion 50, and as shown in FIG. 7, a portion 22 of the mortar is pushed out together with the concave portion forming material 40 to be broken, and the opening portion 51 becomes unnecessarily large. Was. In the former case, it is necessary to flatten the protruding mortar 21 using a trowel or the like before curing, which causes a problem that the number of working steps increases, and in the latter case, the base mortar layer This causes a problem that the adhesive strength between the adhesive mortar 20 and the mortar layer is reduced.

[0007]

SUMMARY OF THE INVENTION In view of the above problems, the present inventor, when forming a construction surface such as a wall surface or a floor surface by using a cement kneaded material such as mortar or concrete, attaches a large anchor to a surface layer thereof. We devised a method that can easily and reliably form a concave part that exhibits an effect. The feature of the present invention is that, when forming the construction surface with the cement kneaded material, before the cement kneaded material is hardened, the concave forming material formed of a hollow tube made of a hydrophobic elastic material is used as the construction surface. After embedding in the surface layer, after a predetermined time has elapsed to develop a predetermined strength in the cement kneaded material, by peeling off the concave portion forming material, a concave portion having an internal space larger than the opening is formed on the construction surface surface layer. It is to form.

[0008]

The operation of the present invention will be described by taking as an example the case of forming a base mortar layer in the construction of a tile wall surface using mortar. On the body wall made of concrete, etc.
The procedure of forming a base mortar layer by applying and coating mortar a plurality of times is the same as the conventional procedure. In the present invention, before the base mortar layer thus formed is cured, a concave portion forming material made of a hollow tube made of a hydrophobic elastic material is buried in the surface layer thereof, and after a predetermined time has passed, the concave portion forming material is formed in the mortar. Then, the concave portion forming material is peeled off. Since the concave portion forming material is a hollow tube having elasticity, it can be elastically deformed and taken out from the opening smaller than its own diameter. In addition, since it is hydrophobic, mortar does not adhere to its surface, and separation is easy. Therefore,
A concave portion having an internal space larger than the opening is formed in the surface layer of the base mortar layer after the concave portion forming material has been peeled off. If the adhesive mortar is applied onto the base mortar layer thus constructed and the adhesive mortar is allowed to penetrate into the concave portions, after the mortar is cured, the concave portions of the underlying mortar layer have an anchoring effect on the adhesive mortar layer. And the bonding strength between the two layers becomes extremely large.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings showing embodiments. FIG. 1 shows a base mortar layer 20 for building a tile wall according to the present invention.
5 shows a step of forming the upper part on the O.sub.0. As shown in the figure, a mortar is applied on the skeleton wall 10 made of concrete to form a base mortar layer 20. And
Before the base mortar layer 20 is hardened,
The recess forming material 1 is embedded.

The recess forming material 1 used in the present invention is a hollow tube made of a material having hydrophobicity and elasticity, such as natural rubber, synthetic rubber, and vinyl resin. It is a cylinder having a diameter of about 3 to 10 mm. The whole shape is manufactured in an appropriate shape such as a string shape as shown in FIG. 1 or a lattice shape or a mesh shape as shown in FIG.

After a predetermined time has elapsed, the underlying mortar layer 20
When the predetermined strength is developed, the above-described concave portion forming material 1 is peeled off (see FIG. 3). At this time, since the concave portion forming material 1 has elasticity, while the underlying mortar layer 20 has appropriate hardness, the concave portion forming material 1 is elastically deformed as shown in FIG. , Can be taken out from the opening 2a smaller than its own diameter. Moreover, since the recess forming material 1 is made of a hydrophobic material, mortar does not adhere to the surface. Therefore, a concave portion 2 having a larger internal space than the opening portion 2a is formed on the surface layer of the base mortar layer 20 after the concave portion forming material 1 is peeled off, as shown in FIG. .

As shown in FIG. 3 (D), the adhesive mortar 30 is placed on the underlying mortar layer 20 on which the recesses 2 are formed.
If the mortar is hardened, the anchoring effect is exhibited after the mortar hardens,
A very large adhesive strength can be developed between the adhesive mortar layer 30 and the adhesive mortar layer 30. Therefore, the tile wall surface constructed using the base mortar layer 20 has excellent strength.

Incidentally, the application of the present invention is not limited to the underlying mortar layer. For example, as illustrated in FIG. 4, when a skeleton wall 10 serving as a foundation of a tile wall A constructed by sticking tiles 4 with mortar is constructed of concrete, the concave portion 3 is formed on the surface layer using a similar technique. If formed, the body wall 10 and the underlying mortar layer 2
The adhesive strength between 0 and 0 can also be increased. Further, when applying the base mortar layer 20, it is common to apply the mortar a plurality of times, but if the present invention is carried out for each mortar application step, it is possible to obtain a very strong base mortar layer 20. It is possible.

Furthermore, the present invention can be applied not only to wall surfaces but also to floor surfaces. Although illustration is omitted,
In constructing a horizontal floor by pouring a self-leveling material on the skeleton floor, applying the present invention, if a recess is formed in the surface layer of the skeleton floor, increasing the adhesive strength with the self-leveling material As a result, it is possible to reliably prevent the floor from being lifted or separated. In addition, the embodiments of the present invention do not prevent appropriate changes or applications depending on the situation.

[0015]

As is apparent from the above description, according to the present invention, a concave portion exhibiting an anchoring effect can be simply and reliably formed on the surface layer of the construction surface made of the cement kneaded material. Therefore, for example, the tile wall surface constructed by performing the method of the present invention develops a very large adhesive strength at the interface between the skeleton wall and the underlying mortar layer and at the interface between the underlying mortar layer and the stuck mortar layer. Therefore, a material having extremely excellent strength as a whole can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part according to an embodiment of the present invention, showing a state where a recess forming material is buried in a surface layer of a base mortar layer for constructing a tile wall surface.

FIG. 2 relates to an embodiment of another aspect of the present invention,
On the surface layer of the underlying mortar layer for building the tile wall,
It is a principal part perspective view which shows the state which buried the lattice-shaped recessed part forming material.

FIGS. 3A and 3B relate to an embodiment of the present invention, in which FIG. 3A is an enlarged longitudinal sectional view of a main part showing a state in which a recess forming material is buried in a surface layer of a base mortar layer, and FIG. FIG. 4C is a longitudinal sectional view of an essential part showing an enlarged state in the middle of peeling off the recess forming material from the surface layer of the base mortar layer, and FIG. Area view,
(D) is a principal part longitudinal sectional view which expands and shows the state which applied the adhesive mortar on the foundation mortar layer.

FIG. 4 is a longitudinal sectional view showing an example of a tile wall surface constructed by implementing the present invention.

FIG. 5 is a perspective view of an essential part showing a conventional method for forming a concave portion in a surface layer of a base mortar layer when constructing a tile wall surface.

FIG. 6 is a vertical cross-sectional view of a main part explaining a defect that occurs when a concave portion is formed in a surface layer of a base mortar layer by a conventional method.

FIG. 7 is a vertical cross-sectional view of a main part for explaining another defect that occurs when a concave portion is formed in a surface layer of a base mortar layer by a conventional method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Depression forming material 2 ... Depression 2a ... Opening 3 ... Depression 4 ... Tile 10 ... Body wall surface 20 ... Base mortar layer 30 ... Sticking mortar layer A ... Tile wall surface

Claims (1)

(57) [Claims] When forming a construction surface such as a wall surface or a floor surface using a cement kneaded material such as mortar or concrete, a hollow tube made of a hydrophobic elastic material is used before the cement kneaded material hardens. The concave portion forming material is embedded in the surface layer of the construction surface, and after a predetermined time has elapsed, the cement kneaded material has a predetermined strength, and then the concave portion forming material is peeled off to form an internal space larger than the opening. A method of forming a working surface using a cement kneaded material, wherein a concave portion having a shape is formed on a surface layer of the working surface.