WO2001055531A1

WO2001055531A1 - Auxiliary tool for fixing wall material, and its production method, and method for producing concrete structure using the auxiliary tool for fixing wall material

Info

Publication number: WO2001055531A1
Application number: PCT/JP2000/000478
Authority: WO
Inventors: Yoshiaki Goto; Masaru Okamoto; Masayuki Mizoshita; Eizou Goto; Yuzuru Honda; Touru Choshi; Masao Kawahara; Yoshimasa Hayashi; Haruka Ogawa; Hitofusa Mitani; Fuminori Shimizu; Shuichi Isayama
Original assignee: Toray Industries,Inc.
Priority date: 2000-01-28
Filing date: 2000-01-28
Publication date: 2001-08-02
Also published as: CN1351689A; KR100687829B1; KR20010110707A; CN1157522C

Abstract

An auxiliary tool for fixing a wall material used as means for preventing wet wall material (e.g., mortar) applied to a wall of a concrete structure. A base (1) embedded in casing concrete (20) and a fixing part (2) for fixing a wet wall material (23) to the surface of the base (1) are integrally molded with resin.

Description

TECHNICAL FIELD The present invention relates to a wall material locking aid and a method of manufacturing the same, and a method of manufacturing a concrete structure using the wall material locking aid.

The present invention relates to a wall material locking aid and a method of manufacturing the same, and a method of manufacturing a concrete structure using the wall material locking aid. Background art

In general, a concrete structure is constructed by holding two front and rear formwork at a fixed interval with a plurality of spacers interposed, placing concrete between the formwork held at the fixed interval, and It is built by removing the formwork after it has hardened. Since the surface of the concrete after removal of the formwork is poor in appearance as it is, cement mortar or resin mortar (hereinafter simply referred to as mortar) is applied to a certain thickness and the surface is finished. It is a general construction method. However, since the mortar applied later may fall off the surface of the solid concrete due to aging, measures are needed to effectively prevent the mortar from falling.

When repairing the outer wall of an existing concrete structure with mortar, it is common to apply mortar directly to the outer wall without removing the old outer wall. For the old outer wall, simply applying mortar over and over does not provide sufficient adhesive strength. Therefore, the mortar is subjected to a fall prevention treatment before application.

In the conventional drop prevention treatment, a primer was applied to the outer wall, an intermediate coating resin was applied, and a net made of synthetic resin was further applied. Synthetic tree The resin net is fixed by driving an anchor pin at regular intervals, and mortar is applied on the synthetic resin net. However, in this drop prevention treatment method, it is necessary to fix the synthetic resin net to the entire outer wall so that there is no slack, and if there is a slack in the net between the adjacent anchor pins, the mortar Adhesive strength is reduced and mortar is more likely to fall off. It requires considerable skill to fix the synthetic resin net to the entire outer wall without slack, which has led to an increase in cost.

Disclosure of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems, improve the locking strength (adhesion) to a wet wall material such as mortar with a simple installation, and prevent the wet wall material from falling off. An object of the present invention is to provide a stop aid and a method of manufacturing the same.

Another object of the present invention is to provide a method for manufacturing a concrete structure that prevents a wet-type wall material from dropping by using the above-described wall-material locking aid.

To achieve the above object, a wall material locking aid according to the present invention comprises: a base portion embedded in a trace of a cone formed on a surface of a concrete body; and a wet wall material applied to the surface of the concrete body. A locking portion adapted to be engaged with the base member is formed from resin so as to form a cavity in the base portion.

Another wall material locking aid according to the present invention is a base member fixed to a spacer mounted in a formwork and connected to a formwork tightening bolt, and engaged with a wet wall material. And a frame-shaped levee portion higher than the locking portion while surrounding the locking portion inside along the outer peripheral edge of the base portion. It is a feature.

Still another wall material locking aid of the present invention is an anchor on the surface of a body concrete. A flat base portion fixed by one means and a locking portion adapted to engage with a wet wall material applied to the surface of the concrete body are formed of resin. Is what you do.

The above-described method for manufacturing each wall material locking assisting tool can be easily manufactured by injection molding using a resin.

In addition, by using each of the above-described wall material locking aids, a concrete structure can be manufactured as follows.

When manufacturing a concrete structure using a wall material locking assisting tool formed with a base portion and a locking portion, bury the base portion in the traces of concrete formed on the surface of concrete. A wet wall material is applied so as to cover the surface of the solid concrete and the wall material locking aid.

When a concrete structure is manufactured by using the wall material locking aid having a frame-shaped ridge, the spacer bolts formed in the form are formed on the end face of the base on the form side. A wall material locking assisting tool having a locking portion and a frame-shaped levee portion higher than the locking portion is fixed, and concrete is hardened by pouring ready-mixed concrete into the formwork and then hardening the concrete. Then, after the mold is released, a wet wall material is applied so as to cover the surface of the solid concrete and the wall material locking aid.

When a concrete structure is manufactured using a wall material locking assisting tool having a locking portion that is detachable, a base bolt provided in the forming frame is provided with a base frame forming frame. A wall material retaining aid having a frame-shaped embankment formed on the side end surface is fixed, and after the raw concrete is poured into the formwork, the concrete is hardened to obtain a concrete body. After removing the frame, the locking part formed separately from the base part is fixed to the base part so as to be higher than the frame-shaped embankment part. It is characterized by applying a wet wall material so as to cover the wall.

Use a wall material locking aid formed of a flat base and locking When manufacturing a concrete structure, fix it to the concrete using anchors so that the base part faces the concrete, and then cover the surface of the concrete and the wall material locking aid. It is characterized by applying wet wall material.

If a concrete structure is to be manufactured using not only the wall material locking aid but also a locking auxiliary member, it should be formed on the spacer bolt placed in the formwork and on the end face of the base part on the formwork side. The wall material locking assisting tool having the locking portion formed and the frame-shaped ridge portion higher than the locking portion is fixed, and the concrete is poured into the formwork, and then the concrete is hardened. After the concrete is removed from the form, the locking auxiliary member is fixed to the wall material locking auxiliary tool, and the wet wall material is covered so as to cover the surface of the body concrete and the wall material locking auxiliary tool. Is applied. BRIEF DESCRIPTION OF THE FIGURES

1A and 1B show a wall material locking assisting device according to an embodiment of the present invention, wherein FIG. 1A is a plan view, and FIG. 1B is a sectional view taken along line AA in FIG.

2A and 2B show a wall material locking assisting device according to another embodiment of the present invention, wherein FIG. 2A is a cross-sectional view taken along line BB in FIG. 2B, and FIG. 2B is a plan view.

FIG. 3 is a side view of a wall material locking aid according to still another embodiment of the present invention.

FIG. 4 is a side view of a wall material locking aid according to still another embodiment of the present invention.

5 (A) to 5 (C) are explanatory diagrams showing a method of manufacturing a concrete structure in the case of using the wall material locking aid of FIG. 1 in the order of steps.

6A and 6B show a wall material locking aid according to still another embodiment of the present invention, wherein FIG. 6A is a cross-sectional view taken along line C-C in FIG. 6C, and FIG. (C) is a view on arrow 6 C in (A). FIGS. 7A and 7B show a wall material locking aid according to still another embodiment of the present invention, wherein FIG. 7A is a cross-sectional view taken along line DD in FIG. 7C, and FIG. (C) is a view on arrow 7 C in (A).

8A and 8B show a wall material locking aid according to still another embodiment of the present invention, wherein FIG. 8A is a cross-sectional view taken along line EE in FIG. 8C, and FIG. (C) is a view on arrow 8 C in (A).

FIG. 9 is an explanatory view showing a method of manufacturing a concrete structure in the case of using the wall material locking aid of FIG. 6 in the order of steps.

FIG. 10 shows a wall material locking assisting device according to still another embodiment of the present invention, (A) is a plan view, (B) is a cross-sectional view of 10 B—10 B in (A), (C) ) Is a half-bottom view.

FIG. 11 is a side view of the wall material locking aid of FIG. 10.

FIGS. 12A and 12B show a wall material locking assisting device according to still another embodiment of the present invention, wherein FIG. 12A is a plan view, and FIG. 12B is a cross-sectional view of 12A-12B in FIG. . FIG. 13 is a vertical cross-sectional view showing a main part of a wall material locking auxiliary tool according to still another embodiment of the present invention.

FIG. 14 is an explanatory view showing a part of a method of manufacturing a concrete structure when the wall material locking aid of FIG. 12 is used.

FIG. 15 is a vertical cross-sectional view showing a wall material locking auxiliary tool according to still another embodiment of the present invention, separately.

FIG. 16 is an explanatory view showing a part of a method of manufacturing a concrete structure when the wall material locking aid of FIG. 15 is used.

FIG. 17 is an explanatory view showing a part of a method of manufacturing a concrete structure using a wall material locking aid according to still another embodiment of the present invention.

FIGS. 18A and 18B show a wall material locking aid according to still another embodiment of the present invention, wherein FIG. 18A is a sectional view taken along line FF in FIG. 18B, and FIG.

FIG. 19 is a longitudinal sectional view of a wall material locking auxiliary tool according to still another embodiment of the present invention. FIG.

FIGS. 20 (A) and (B) are illustrations of a method of manufacturing a concrete structure using the wall material locking aid of FIG. 18.

FIG. 21 is an explanatory diagram showing another method corresponding to FIG. 20 (B).

FIGS. 22 (A) to 22 (E) are cross-sectional views of relevant parts showing aspects of the locking portions.

FIG. 23 is a plan view of a wall material locking aid according to still another embodiment of the present invention.

FIGS. 24A and 24B show a wall material locking aid according to still another embodiment of the present invention, wherein FIG. 24A is a plan view, and FIG. 24B is a sectional view taken along line GG in FIG.

FIGS. 25A and 25B show a method of assembling the formwork. FIG. 25A is a cross-sectional view of the formwork when assembled, and FIG. BEST MODE FOR CARRYING OUT THE INVENTION

In the present invention, the wet wall material refers to a wall material that can be applied in a plastic state at the time of construction, but becomes a hardened state after a certain period of time after application. For example, examples of such wet wall materials include mortar, plaster, organic adhesives, and caulking materials. ,

In the embodiment of the present invention described below, a case where mortar is applied as a wet wall material to a wall surface of a concrete structure will be described.

1 (A) and 1 (B) show an example of the wall material locking aid of the present invention, which is used to prevent mortar from peeling off when applying mortar to a new concrete structure after removing a formwork. Is done.

The wall material locking assisting device P is configured such that the base portion 1 having a trapezoidal shape and the locking portion 2 having a loop shape are integrally formed of a thermoplastic resin. The loop-shaped engaging portions 2 are formed to have a thickness having sufficient rigidity, and project from a large area of both end surfaces of the base portion 1 so as to be arranged in a row. Also, On the end face on the narrow area side of the base part 1, one inlet hole 3 is provided in the axial center part, and the hollow part 4 is provided so as to surround the inlet hole 3. One hollow portion 4 may be provided in a donut shape, or the donut shape may be divided into a plurality of portions by a partition wall.

The wall material locking aid P having the above configuration is used as a means to prevent the metal from falling when applying mortar to the concrete structure from which the formwork has been removed, as shown in Figs. 5 (A) to 5 (C). Is done.

Before explaining the steps in FIGS. 5 (A) to 5 (C), the construction method of a concrete structure will be described with reference to FIGS. 25 (A) and 25 (B).

Fig. 25 (A) shows a state in which concrete has been poured into the formwork 24, 20 is solid concrete, 21 is a space bolt, 25 is a connector, and 26 is a form clamp. It is an attachment bolt.

The formwork 24 is provided with two front and rear pieces to form a space for placing ready-mixed concrete (only one side is shown in the figure), and a space is provided between the two front and rear formworks 24, 24. The sub-bolt 21 is inserted, and the connector 25 is screwed to both ends. Formwork tightening bolts 26 extend outward from connector 25, and formwork 24 is inserted into formwork tightening bolts 26 so as to abut the outer end surface of connector 25. A pair of side end thick members 27 and 27 and a foam tie 28 are inserted into the outside thereof, and a nut 29 is screwed and fastened.

When the ready-mixed concrete poured into the space between the formwork 24 and 24 hardens and becomes solid concrete 20, the formwork 24 is removed from the mold and the concrete construction as shown in Fig. 25 (B) is completed. Become something. To remove the mold, remove the nuts 29, the foam ties 28, the thick side members 27, and the formwork 24 in that order, and finally remove the connector 125, and then remove the connector 124. Cone marks 22 are formed on the marks. The end of the spacer bolt 21 protrudes from the inside of the cone mark 22. When the mortar is applied to the concrete in which the frame plate has been removed as described above, the wall material locking aid P of the present invention is used as a means for preventing mortar from falling as shown in FIGS. 5 (A) to 5 (C). To use.

First, as shown in FIG. 5 (A), the adhesive 5 is applied to the base 1 of the wall material locking aid P. This adhesive 5 may be applied to the cone traces 22 on the body concrete 20 side instead of the wall material locking aid P side, or may be applied to both the base 1 and the cone traces 22 May be. The type of the adhesive is not limited. An adhesive made of a thermosetting resin such as a force, an epoxy resin, or a polyurethane resin is preferable.

Next, as shown in FIG. 5 (B), the base part 1 of the wall material locking aid P is buried in the cone trace 22 and the wall material locking aid P is fixed to the surface of the concrete 20 . After the wall material locking aid P is fixed, モル mortar 23 is applied to the surface of the concrete 20 to a certain thickness so as to cover the wall material locking aid P as shown in Fig. 5 (C). . The mortar 23 may be applied once, but may be applied twice as shown by a broken line in the figure. When applied twice, higher adhesive strength can be obtained.

The wall material locking aid P is formed so that the locking portion 2 has rigidity, so that it is not deformed by the application pressure of the mortar, and is kept in a plastic mortar while maintaining a three-dimensional shape. Immerse yourself. Therefore, the locking portion 2 holds the mortar 23 with a strong anchor effect, and improves the adhesive strength of the mortar 23 to the concrete 20.

Further, the wall material locking assisting device P is attached by inserting the spacer bolt 21 into the insertion hole 3 and is fixed so as not to be displaced. Further, since the base portion 1 is formed so as to have the cavity 4, it can be formed with a small amount of resin, thereby enabling low-cost manufacturing. In addition, the adhesive 5 penetrates into the cavity 4 and solidifies, thereby exhibiting an anchor effect, and the wall material locking aid P is fixed to the reinforcement by the cone trace 22. In the wall material locking aid P shown in FIG. 1, the insertion hole 3 is formed as a stupid hole having an inner diameter larger than the outer diameter of the spacer bolt 21, as shown in FIGS. 2 (A) and (B). Alternatively, a female screw that is screwed with the male screw of the bolt 21 may be used. Such a female screw may be provided directly on the base portion 1 as shown in the figure, or may be a metal spacer having a female screw thread embedded therein.

態様 In the case where the insertion hole 3 is a female screw, an engaging groove 6 for inserting the tip of a dry nut is provided in the center of the opposite end face, and a screwdriver is inserted into the engaging groove 6 to rotate the base 1. You should be able to do so. By providing the engagement groove 6 in this manner, the mounting of the wall material locking auxiliary tool P to the spacer 21 is facilitated. The shape of the engagement groove 6 is a cross (plus) as shown in the figure or a one-shape (minus), depending on the type of screwdriver (tip shape).

The outer peripheral surface of the base portion 1 may be only a fibrous smooth surface as shown in FIGS. 1 and 2, but as shown in FIGS. 3 and 4, a sealing ring made of an elastic material is used. 7 may be attached. The seal ring 7 seals between the base part 1 of the wall material retaining aid P and the cone mark 2 2 of the solid concrete 20, and a spike bolt 2 caused by rainwater entering the cone mark 2 2 2 1 can prevent corrosion. The wall material locking assisting tool P in FIG. 3 has a ring-shaped locking groove 8 formed on the outer peripheral surface of the base portion 1 and a sealing ring 7 is attached to the locking groove 8. The wall material locking assisting tool P of 4 has a step portion 9 having a slightly smaller outer diameter formed on the outer peripheral surface of the base portion 1, and the sealing ring 7 is locked to the step portion 9.

FIGS. 6 (A), (B) and (C) show wall material locking aids according to another embodiment of the present invention. The wall material locking aids in Figs. 1 and 2 above are designed to be installed using the cone traces after removing the connector used for assembling the formwork. In the form, the wall material locking aid itself is It is designed to double as a connector.

As shown in FIG. 6, the wall material locking assisting device P has a base portion 1 formed in a truncated cone shape, and a large number of loop-shaped engagement portions 2 formed in a narrow area side of both end portions. However, it is the same as the embodiments of FIGS. 1 and 2 described above in that it is integrally formed of a thermoplastic resin. However, in order to double as a connector, it has the following different configuration.

The base part 1 is provided with a screw hole 1 s to be screwed into the spur bolt (2 1) at the axis of the end surface on the wide surface area side, and the form center is tightened on the axis of the end surface on the narrow surface area side. A screw hole 1 m for screwing the bolt (26) is provided. These two screw holes 1 s and 1 m are provided coaxially with the partition wall 10 interposed therebetween. The partition wall 10 is not always necessary, and the two screw holes 1 s and 1 m may be connected to each other. If a partition wall 10 is provided, one of the spacer bolt and the formwork tightening bolt will penetrate into the other screw hole, shortening the screw hole length of the other bolt, or The problem that the fixing position of the base portion 1 to the spacer bolt becomes unstable can be solved. The screw holes 1 s and lm may be formed directly on the resin base portion 1, or may be formed by burying the one provided on the metal insert.

Further, on the end face on the side where the locking portions 2 are provided in a row, a number of concave grooves 11 are further provided so as to intersect the row direction of the locking portions 2. The concave groove 11 has an effect of increasing the anchor effect on the mortar together with the loop-shaped locking portion 2. In addition, an annular frame-shaped bank portion 12 is provided on the end face on which the locking portions 2 are provided so as to surround the locking portions 2 inward. The frame-shaped embankment portion 12 is formed so that the height is equal to or higher than that of the locking portion 2.

Further, at the end on the side where the screw hole 1s is provided, a plurality (four in the figure) of protrusions 13 are provided on the outer periphery thereof. Even if there is only one convex I don't support it. When a plurality of projections 13 are provided, they are preferably arranged at equal intervals from the viewpoint of balance. When the form 13 is disengaged from the screw hole 1 m of the base 1 while rotating the form tightening bolt 26 while removing the form, the wall material locking assisting tool P rotates. It is set up so that it can be separated smoothly without leaving. In addition, the base part 1 is formed in a truncated cone shape, and the side having a large outer diameter is buried in the concrete body 20, so that the wall material locking assisting tool P does not come off from the concrete body 20. I try not to wake up. The convex portion 13 of the rotation preventing means may be a concave portion 13 'as in the embodiment shown in FIG. The number of the recesses 13 'may be plural or only one. Further, as the counter-rotating means, as shown in the embodiment of FIG. 8, the base section 1 may be formed in a non-circular cross-sectional shape, and both the convex section 13 and the concave section 13 'may be provided. . The shape of the non-circular cross section may be a polygon such as a triangle or more, a flower, a star, or the like.

In addition, the shape of the base 1 for retaining the wall material locking aid P is not limited to the shape of a tapered trapezoid. The shape may be such that it has an outer diameter or a circumscribed circle larger than the end face of.

The connector / wall material locking aid P described above is used as a connector / wall material locking aid as shown in FIGS. 9 (A), 9 (B) and 9 (C).

Fig. 9 (A) shows a state in which the wall material locking aid P has been replaced with the connector 25 in Fig. 25 (A), and the spacer bolt 21 and the formwork tightening bolt 26 have been replaced. Both are connected. Therefore, when the wall material locking aid P, which also serves as a connector, is pressed from the formwork 24 by tightening the nut 29, about 200 kg Zcm ² (19.6 MP a) Tightening pressure is applied. A frame-shaped embankment 12 is provided on the end face of the base 1 to support the clamping pressure of the formwork 24. The locking part 2 is not crushed by the pressing force.

In addition, when casting ready-mixed concrete, since the frame-shaped embankment portion 12 is provided, the ready-mixed concrete does not flow into the end face where the locking portion 2 is provided, and the locking portion 2 is To avoid being buried in Therefore, when the mortar is applied after the mold is removed, the anchor of the locking portion 2 to the mortar can be maintained.

When the raw concrete hardens, the mold removal operation is performed. Finally, the formwork tightening bolt 26 is turned to separate from the base part 1 of the wall material locking aid P. However, since the convex portion 13 is formed on the outer periphery of the base portion 1, the wall material locking assisting tool P does not rotate, and the mold fastening bolt 26 can be smoothly removed. it can. Further, since the base portion 1 has a truncated conical shape and the outer diameter is increased toward the buried side, even if the formwork fastening bolt 26 is pulled, the wall material locking assisting tool P is not pulled out. Therefore, as shown in FIG. 9 (B), the wall material locking aid P can be left in the concrete 20 while being connected to the spacer bolt 21.

After applying the condition shown in FIG. 9 (B) and applying a mole 23 to the surface of the concrete, the condition shown in FIG. 9 (C) can be obtained. The loop-shaped locking portion 2 has rigidity and is maintained in a three-dimensional shape, and penetrates deeply into the applied mortar 23 to exhibit an anchoring effect. This anchor effect can be obtained not only by the locking portion 2 but also by the concave groove 11.

The wall material locking aid P is used not only as a connector when assembling the formwork but also as a fall prevention means without being removed, so that the wall material locking device P shown in FIGS. In the case of an auxiliary device, it is not necessary to remove the connector once it has been removed, and it is not necessary to install the wall material locking auxiliary device thereafter. Therefore, the pre-treatment work for preventing the mortar from dropping can be simplified, and the work time can be significantly reduced. In addition, since the disposal of used connectors is eliminated, environmental pollution as industrial waste is a problem. Can also be eliminated.

FIGS. 10 (A), (B) and FIG. 11 show other examples of the wall material locking auxiliary tool which is a connector combined type.

This wall material locking assisting tool P is different from the embodiment shown in FIGS. 6 to 8 in that the base portion 1 is formed in a substantially disk shape and the locking portion 2 is provided so as to surround the locking portion 2. The difference is that the frame-shaped embankment section 12 is connected via a thin-walled deformable connection section 16. The height b of the deformable connecting portion 16 is equal to or higher than that of the locking portion 2, and a plurality of holes 17 are provided so as to penetrate therethrough. These holes 17 are formed so that when the pin core is inserted into the molding die so that the inner diameter of the locking portion 2 and the concave groove 11 are simultaneously formed, the pin core is pulled out. Have been. The frame-shaped embankment portion 12 is formed to a thickness of 0.5 to 4 mm, preferably 1 to 4 mm, and does not bend and deform even if it is subjected to an axial pressure from the mold when assembling the mold. The deformation connecting portion 16 has a thin thickness of 0.05 to 0.5 mm, and bends and deforms when it receives a pressing force from the mold.

A flange-shaped receiving surface 15 is provided so as to protrude laterally below the lower edge of the deformable connecting portion 16 by a distance a. The receiving surface 15 serves to receive the lower end of the frame-shaped ridge 12 when the frame-shaped ridge 12 is pushed in the axial direction while bending and deforming the deformable connecting portion 16 during the assembly of the formwork. do. In this manner, when the frame-shaped ridge 12 is locked to the receiving surface 15, the upper edge of the frame-shaped ridge 12 is set to be equal to or higher than the upper end of the locking portion 2. is there.

It is preferable that the outer diameter of the receiving surface 15 be at least larger than the inner diameter (inner peripheral surface) of the frame-shaped embankment 12, and more preferably the outer diameter (outer peripheral surface) of the frame-shaped embankment 12. Should also be large. The distance a is preferably shorter than the height b of the deformable connecting portion 16 (a <b), and the height of the frame-shaped embankment portion 12 is the sum of the distance a and the height b (a + b) or higher Good. The receiving surface 15 is made larger than the outer diameter (outer peripheral surface) of the frame-shaped embankment portion 12 so that the wall material locking aid P does not come off from the concrete 20. Such retaining can be obtained by providing irregularities whose height changes in the thickness direction on the outer peripheral side surface of the base portion 1.

On the end face side of the base portion 1 where the screw hole 1 s is provided, the fin-shaped convex portions 13 and the hollow portions 4 are alternately radially formed around the screw hole 1 s. Of these, the projections 13 prevent the wall material locking aid P from rotating around, and the cavities 4 reduce the amount of resin used.

A ring-shaped groove 14 is provided on the end face on the side where the locking portion 2 is provided so as to surround the outer periphery of the screw hole 1 m, and a hexagon nut 14 a is formed at the opening side end. I have. The hexagon nut 14a is used when a tightening tool such as a wrench is engaged to screw the opposite screw hole 1s to the spacer bolt. The boundary portion where the two screw holes 1 s and 1 m contact each other may penetrate each other as in the example shown in the figure, or may be partitioned by a partition wall. Further, the screw hole Is, 1 m may be formed in the metal insert and buried in the base portion 1 as in the other embodiments described above. When burying a metal insert, lock it with a keyway or fix it by press fitting, etc., so that the metal insert does not idle against the base part 1.

The frame-shaped embankment portion 12 may be provided with a number of filament portions 18 extending to the inner space on the inner surface thereof as in the embodiment of FIGS. 12 (A) and 12 (B). . The filament portion 18 exerts an even greater anchoring effect on the mortar. The position where the filament portion 18 is provided is not particularly limited as long as it is the inner surface of the frame-shaped bank portion 12. For example, as illustrated in FIG. 13, the upper edge of the frame-shaped embankment portion 12 may be formed in a step shape, and may be provided on a step portion having a low level difference. The filament portions 18 may have the same length or different lengths. Filament part 18 arrangement is orderly And may be random. The thickness of the filament portion 18 is preferably 0.05 to 5.0 mm, and the length is preferably 2 mm or more and equal to or less than the inner diameter of the frame-shaped embankment portion 12.

The method of using the connector-type wall material locking aid P shown in Fig. 10 or Fig. 12 is as follows, except for setting it as shown in Fig. 14 when assembling it as a connector to the formwork. Then, it may be performed in the same manner as in the case described with reference to FIG.

That is, when assembling the wall material locking auxiliary tool P as a connector, as shown in FIG. 14, the spacer bolt 21 is connected to the screw hole 1 s of the wall material locking auxiliary tool P, Formwork tightening bolts 26 are connected to the outer screw holes 1 m, and the formwork 24 is pressed by the nuts 29 toward the wall material locking aid P side. As a result of this pressing operation, the frame-shaped bank portion 12 is pressed while bending and deforming the deformable connecting portion 16, and finally, the lower end contacts the receiving surface 15. In the course of this pressing operation, the deformable connecting portion 16 is bent and inverted so as to be sandwiched between the frame-shaped embankment portion 12 and the base portion 1, and finally, the inner peripheral surface of the frame-shaped embankment portion 12 and the base The frame-shaped embankment 12 is fixed in a state in which it is sandwiched between the outer peripheral surface of the section 1 and a wedge. Tightening pressure when the good urchin mold 2 4 to press the frame-shaped bank portion 1 2 is approximately 2 0 0 kgf / cm ² but becomes (1 9. 6 MP a) above, the frame of the pressing force The ridge 1 2 is supported to prevent the locking portion 2 from being crushed.

FIG. 15 shows still another embodiment of the wall material locking assisting tool P of the connector type. The wall material locking assisting tool P is configured such that the locking portion 2 is formed separately from the base portion 1 so as to be detachable from the base portion 1. In order to make the structure detachable in this way, a large number of locking portions 2 are integrally formed on the surface of the support plate 31 and a screw on the base portion 1 side is formed at the center of the back side of the support plate 31. A male screw 32, which is screwed into the hole 1 m, is provided on the body.

A wall material for a connector that has a base part 1 and a locking part 2 that are integrally molded. In the case of a stop aid, as described above, the height of the locking part 2 must be lower than or equal to the upper end of the frame-shaped embankment 12 to protect it from pressing from the formwork and intrusion of ready-mixed concrete. There is. Along with this, the locking strength to the mortar must be reduced, and there is a disadvantage that the number of spacers must be increased in order to increase the locking strength.

However, according to the embodiment shown in Fig. 15, only the base part 1 is used as a connector when assembling the formwork, and after inserting the ready-mixed concrete, the formwork is removed, and then the locking part 2 is attached. can do. Therefore, the height of the locking portion 2 can be made higher than the upper end of the frame-shaped embankment portion 12 as shown by a chain line in FIG. 15, and the locking strength to the mortar can be increased.

Further, in the wall member locking assisting device of the embodiment of FIG. 15, a net-shaped sheet 33 can be used as a locking assisting member as shown in FIG. The net sheet 3 3 is sandwiched between the base part 1 and the support plate 32 of the locking part 2, and extends along the surface of the concrete 20 outside the wall material locking aid P. It is provided as follows. This net-shaped sheet 33 enhances the mortar drop prevention action at the portion where the wall material locking aid P is not mounted, and suppresses the growth of the mortar even if cracks may occur on the mortar outer wall. be able to.

The combined use of the net-shaped sheets 33 can also be adopted in the above-mentioned wall material locking assisting device of a single connector type in which the base portion 1 and the locking portion 2 are integrally formed. That is, as illustrated in FIG. 17, the bolt 34 is screwed into the screw hole 1 m, and the net-shaped sheet 33 is sandwiched between the head of the bolt 34 and the surface of the base 1. do it. As a method for fixing the net-like sheet 33, in addition to using the bolts as described above, the net-like sheets 33 may be bonded with an adhesive or welded using a heating means or ultrasonic waves. .

The shape and manufacturing method of the locking auxiliary member are not particularly limited. In addition to knitted fabrics such as Russell knitting and tricot knitting of synthetic resin fibers, any of those formed by extruding a synthetic resin directly into a net-like sheet and those having perforated openings in a resin film may be used. The shape of the mesh may be any of polygons such as triangle, square, and pentagon, tortoiseshell, rhombus, and ellipse.

When a net-like sheet is used, the mesh size is preferably larger than the diameter of the fixing bolt and smaller than the bolt head. The size of such a mesh may be set to cover the entire net-like sheet, or may be limited to a portion to be fixed with bolts. Specifically, it is desirable that the maximum separation distance be in the range of 8 to 15 mm.

The size of the net-like sheet is such that the maximum side length is in the range of 5 to 60 cm, preferably in the range of 15 to 30 cm. If it is less than 5 cm, it is difficult to sufficiently exert the locking effect of the mortar. The upper limit is usually set to 60 cm because the spacer bolt mounting pitch is usually 60 cm. This is because when the ends of the net-shaped sheet overlap, the crushing of the mole at the overlapping portion tends to be insufficient. However, if one net-like sheet is used together for each wall material locking aid, the dimensions should be as described above. This does not apply when a net-like sheet with an area is installed.

As the resin forming the locking auxiliary member, nylon, polyvinyl alcohol, polypropylene, and amide are preferable. In particular, nylon 6-polyvinyl alcohol is preferred because it has excellent resistance to mortar, which is an adhesive property, and also has excellent adhesiveness to mortar.

FIGS. 18 (A) and (B) show a wall material locking aid according to still another embodiment. Each of the above-mentioned embodiments mainly targets a new concrete structure, but the one shown in FIG. 18 is used for applying mortar to the outer wall of an existing concrete structure.

In the figure, the wall material locking aid P is a fiber or filler reinforced A plurality of loop-shaped locking portions 2 are integrally formed on a disk-shaped base portion 1 made of a synthetic resin by injection molding so as to protrude in a row on one surface. Of course, it is not essential that the base portion 1 is made of a reinforced resin, and the base portion 1 may be made of a non-reinforced resin which is not reinforced by the woven fiber filler like the locking portion 2. The base portion 1 is formed with a concave groove 11 for enhancing the mortar locking strength together with the locking portion 2, and an insertion hole 34 for inserting a fixing metal such as an anchor pin is provided at a central portion. . The wall member locking assisting tool P may be provided with a locking portion 2 and a concave groove 11 also on the back surface side of the base portion 1 as in the embodiment illustrated in FIG.

The above-mentioned wall material retaining aid P can be used to repair the outer wall of an existing concrete structure and apply mortar without removing the old outer wall, as shown in Fig. 20 (A) '( B) is used as shown.

The existing concrete structure is configured by applying mortar 23 'to the surface of solid concrete 20 as shown in the figure. When repairing the outer wall, first, as shown in Fig. 20 (A), contact the outer wall of the old mortar 23 'with the back side of the base 1 of the wall material locking aid P shown in Fig. 18 above. And insert the anchor pin 35 into the central insertion hole 34, and drive in the direction of the arrow with a hammer.

As the anchor pin 35, a known one may be used. Generally, the pin body is cylindrical, has a flange portion on the head 35a, and has a pointed tip 35b. It is preferable to use a core member 23c that can be moved in the axial direction within 5b. The head 35a of the anchor pin 35 is driven in so that the head 35a is in contact with the upper surface of the base 1 of the wall material locking aid P. In the next step, insert a rod-shaped jig inside the anchor pin 35 and drive only the inner core part 35c, and the tip part 35b breaks into a forked shape, as shown in Fig. 20 (B). As a result, the wall material locking aid P is fixed to the outer wall surface. When the uncured mortar 23 is applied to the surface of the mortar 23 ′ to which the wall material locking aid P is fixed as described above, the locking portion 2 of the wall material locking aid P becomes the inside of the mortar 23. It penetrates deeply and locks, and after hardening, it is held firmly. In addition, the mortar locking strength of the wall material locking aid P is independent for each wall material locking aid P, and has an effect on the locking strength of the other wall material locking aid P. Since they are not given, they can be mounted on the outer wall without worrying about mutual displacement. Therefore, no special skills are required and the work can be done easily.

When the base portion 1 is made of a reinforced resin and the locking portion 2 is made of a non-reinforced resin as in the embodiments of FIGS. 18 (A) and (B), the base portion 1 has strength and elastic modulus ( The rigidity) is large, but the locking part 2 has a strong and tough relationship. Therefore, the supporting strength together with the mortar locking strength is further improved, and the effect of preventing the mortar from falling is further increased. Can be.

The repair of the outer wall of an existing concrete structure by the above-mentioned wall material locking aid may be as shown in FIG.

In the method shown in Fig. 21, a recess 36 with a depth corresponding to the thickness of the base 1 is pre-processed on the outer wall of the old mortar 23 ', and the recess 36 is provided with the base of the wall material locking aid P. 1 is fitted, and mortar 23 is applied in the same manner as in FIG. According to this repair method, the height of the wall material locking aid P protruding from the surface of the outer wall is reduced, so that the mortar 23 can be thinned.

In the mortar repair of the outer wall of the existing concrete structure described above, the number of distributions (density) for attaching the wall material locking aid P may be set according to the condition of the work surface, but is preferably per lm ² . It is better to have 4 or more. The anchor pin used to fix the wall material locking aid P to the wall surface may be, for example, a nail or a screw, in addition to the anchor pin illustrated in the above-described construction example. In particular, stainless steel having excellent corrosion resistance is preferable. The wall material locking assisting device of the present invention has a basic structure including the base portion and the locking portion as described above. Also in the case of an object or an object fixed with an anchor pin, or a deviation, the shape of the locking portion is preferably a loop shape, but is not necessarily limited to this.

For example, taking the case of a connector-combined type as an example, even if it is a hook shape as shown in (A), (B), (C), and (D) in FIG. 22, (E) in FIG. The rod bow shown in the figure below may be used. Fig. 22 (A) shows an arcuate hook, L-shaped hook (B), T-shaped hook (C), and a mushroom-shaped or spherical hook (D).

In addition, the arrangement of the locking portions 2 may be a parallel arrangement or a radial arrangement as shown in FIG. 23 for any type of wall material locking auxiliary tool. In this case, as shown in FIGS. 24 (A) and 24 (B), the locking portion 2 may be provided on the inner peripheral surface of the frame-shaped embankment portion 12.

As a material used for molding the wall material locking assisting tool of the present invention, a metal such as a resin and a stainless steel can be used. As the resin, a thermoplastic resin or a thermosetting resin can be used, but it is particularly preferable to use a thermoplastic resin that is easily injection-molded.

For example, thermoplastic resins include nylon, polyphenylene sulfide (PPS), polyester, polyethylene, polypropylene, polystyrene, high impact polystyrene (HIPS), ABS resin, modified polyphenylene oxide (modified PPO), and polyamide elastomer. (For example, “ぺ Bax” manufactured by Toray Industries, Inc.) and polyester elastomer (eg, “Hytrel” manufactured by Toray DuPont) can be exemplified. However, concrete is alkaline, and among these, PPS resin and nylon resin which are excellent in resistance to heat and heat are particularly preferable. Further, as these resins, a fiber reinforced resin mixed with reinforcing fibers having short fibers such as glass fibers and carbon fibers may be used. In the case of the fiber reinforced resin, the adhesive strength of the mortar can be further improved, and the drop prevention performance can be further improved.

The locking force of the wall material locking aid of the present invention with respect to a wet wall material such as mortar depends on the number of spacer bolts used per unit area. It is preferable to design it. In order to satisfy such characteristics, the dimensions of the locking part are as follows: in the case of a loop shape, the loop thickness (diameter) is 0.05 to 5.0 mm, and the loop diameter is 1.0 to Preferably, it is 10 mm. In the case of a hook shape or a rod shape, the thickness (diameter) is preferably set to 0.05 to 5.0 mm. The height is preferably in the range of 2 to 10 mm.

The number of locking parts to be provided per wall material locking aid is 20 to 100 for non-reinforced resin not reinforced with fiber, and 100 to 100 for fiber reinforced resin. Should be 5 to 70 pieces. Industrial applicability

When a new concrete structure is installed, wet wall materials (such as mortar) are applied to the outer walls of the concrete structures, or when the outer walls of existing concrete structures are repaired by applying wet wall materials (such as mortar), the wet walls are used. It can be used to apply the material without falling.

Claims

The scope of the claims

1. A base portion buried in the trace of the cone formed on the surface of the concrete body, and a locking portion adapted to engage with the wet wall material applied to the surface of the concrete body. A wall material locking aid formed of a resin so as to form a cavity in the base portion.

2. The wall material locking aid according to claim 1, wherein a seal ring is mounted on an outer surface of the base portion.

3. A base portion fixed to a spacer bolt arranged in the formwork and connected to the formwork tightening bolt; a locking portion adapted to engage with the wet wall material; A wall material locking assisting tool formed by surrounding the locking portion inside along the outer peripheral edge and forming a frame-shaped ridge portion higher than the locking portion.

4. The wall material locking assisting tool according to claim 3, wherein a deformable connecting portion is interposed between an outer peripheral edge portion of the base portion and the frame-shaped embankment portion.

5. The wall material locking aid according to claim 3 or 4, wherein a large number of filament portions are provided inside the frame-shaped bank portion.

6. The wall material locking assisting tool according to claim 3, wherein the locking portion is formed separately from the base portion, and is detachable from the base portion.

7. A flat base portion fixed to the concrete body surface by an anchor means, and a locking portion adapted to engage with a wet wall material applied to the surface of the concrete body. Auxiliary wall material molded from resin

8. The wall material locking aid according to any one of claims 1 to 7, wherein a net-shaped sheet larger than an end area of the base portion is attached outside the locking portion.

9. The wall material locking aid according to any one of claims 1 to 8, wherein the locking portion is formed in a loop shape, a hook shape, or a mouth shape.

10. The wall material locking aid according to any one of claims 1 to 9, wherein the resin is nylon or polyphenylene sulfide.

11. The method for producing a wall material locking aid according to any one of claims 1 to 10, wherein the method is performed by injection molding using a resin.

12. The wall material locking aid according to any one of claims 1, 2, 8, 9, and 10 is used to attach the wall material locking aid to a cone mark formed on the surface of solid concrete. A method of manufacturing a concrete structure, comprising: after burying a base portion of a tool, applying a wet wall material so as to cover a surface of the solid concrete and the wall material locking aid.

1 3. A wall member having a suspension bolt arranged in the formwork, a locking portion formed on the end surface of the base portion on the formwork side, and a frame-shaped ridge portion higher than the locking portion. Fixing the fixing aids, pouring ready-mixed concrete into the formwork, hardening the concrete to form concrete, then removing the formwork, and fixing the concrete surface and wall material. A method for manufacturing a concrete structure, comprising applying a wet wall material 15 so as to cover a fixture.

1 4. A wall material locking aid having a frame-shaped ridge formed on the end face of the mold on the mold side of the base is fixed to a suspension bolt arranged in the mold, and the support is formed in the mold. After the concrete has been cast, the concrete is hardened to form a concrete body, and then the mold is removed from the mold. A method for manufacturing a concrete structure, comprising fixing to a base portion, and then applying a wet wall material so as to cover the surface of the solid concrete and the wall material locking aid.

15. A wall material locking aid having a locking portion and a flat base portion is fixed to the concrete body by anchoring means so that the base portion faces the concrete body side, and then A method for manufacturing a concrete structure, comprising applying a wet wall material so as to cover a surface of a body concrete and a wall material locking aid.

16. A wall member having a spacer formed in a former side end face of a base portion and a frame-shaped ridge portion higher than the lock portion on a spacer bolt arranged in the formwork. After fixing the auxiliary tool, placing the ready-mixed concrete into the formwork, hardening the concrete to make the concrete, and then removing the formwork, the locking auxiliary member is used as the wall material. A method of manufacturing a concrete structure, characterized by fixing to a fixing aid and applying a wet wall material so as to cover the surface of the concrete body and the wall material fixing aid.

17. A concrete structure manufactured by the manufacturing method according to any one of claims 12 to 16.