JP3840613B2 - Tile fall prevention method. - Google Patents

Description

The present invention relates to a tile fall prevention method for a reinforced concrete structure.

As a method for preventing tiles from dropping in reinforced concrete structures, 1. Epoxy resin injection method for floating tiles. Although there is a fixing method using a T-shaped anchor pin to the floating part of the tile and the base mortar, problems such as fall prevention durability and deterioration of designability may be pointed out, and it can be said that it is not always perfect.

In the method of injecting epoxy resin into the floating area of the tile, rainwater often flows into the fine gaps that float, and dirt is generated by the rainwater. The injection method is said to lack adhesive durability. Also, if injection into a fine gap, there is a tendency to cause a new float due to the injection pressure, there is a disadvantage that increases the repair area, the epoxy resin injection method is not an application technique to the place where it does not float This is a construction method that cannot be performed to prevent falling to a healthy place.

As shown in FIG. 7, the T-shaped anchor pinning method for floating the tile and the base mortar is formed by engraving the surface of the tile 4 with a groove 8 for embedding the T-shaped anchor pin, and the concrete portion 1 on the joint portion 5. The reaching anchor hole 10 is drilled, and then, as shown in FIG. 8, the adhesive 9 is injected into the anchor hole 10 and the T-shaped anchor pin embedding groove 8, and then the T-shaped anchor pin T is inserted. This is a procedure for burying the T-shaped anchor pin head in the embedding groove. However, the design is deteriorated due to the traces of engraving the groove on the tile surface, and the economy by installing a large number of anchor pins. Had problems with sex.
Patent 1804415

In order to prevent falling of the existing tile in the reinforced concrete structure, the fixing of the existing tile is strengthened more than the conventional technique, thereby preventing the progress of deterioration.

In other words, with the epoxy resin injection method, the epoxy resin adhesion surface is not healthy, and the durability after repair / reinforcement cannot be expected due to physical incomplete injection into fine gaps. There was a drawback to say.

In the T-shaped anchor pinning method, a T-shaped anchor pin embedding groove is formed on the existing tile surface, but this trace may not be completely erased and may be pointed out as a design defect. Further, when the number of tiles to be constructed is large, the number of installation places of the T-shaped anchor pins increases, so that there is a disadvantage that the construction cost increases.

In view of these circumstances, the present invention aims to solve the above-described problems by adopting the following configuration, thereby preventing the falling of existing tiles.

In fixing the existing tile to the ground mortar by the method of the present invention, the groove obtained by cutting the existing tile joint material, tile sticking material and ground mortar is important, and the surface of the groove is a fresh cutting surface. Since there are no impurities such as efflorescence and dirt that lower the adhesiveness, the adhesiveness of the adhesive filling the groove can be obtained with certainty. Therefore, it can be said that the adhesion reliability is high.

The groove for fixing the existing tile to the ground mortar by the method of the present invention is a state where the tile edge surface, the tile attaching material surface, the ground mortar surface or the concrete surface is exposed, and the groove is filled with an adhesive. Thus, it is possible to integrate the tile, the mortar and the base mortar or the concrete through the adhesive, and it is possible to reliably prevent the existing tile from falling.

When installing a tile fall prevention groove by the method of the present invention, if the coating thickness of the base mortar is thin or if the tile is directly attached to the concrete, provide a groove that reaches the inside of the concrete. Thus, it is possible to prevent the tile from falling by filling the adhesive.

Since the groove according to the method of the present invention is provided inside the existing tile joint, the existing tile surface is not damaged and there is no change in appearance, so that the design problem does not occur.

Grooves according to the method of the present invention are provided in the existing tile joints, but it is not always necessary to provide them all around the four sides of the tiles. In the case of umbilical joints, the joints of every four tiles are used. A groove may be provided at the joint intersection.

The adhesive can be adjusted to the color of the existing tile joint material, or it can be finished using the existing tile joint material on the surface of the adhesive, so there is no design problem. .

The fixing of existing tiles and ground mortar to the frame concrete by the method of the present invention is to cut the interior of the frame concrete through the ground mortar and the surface of the groove obtained by cutting the existing tile joint material, tile pasting material and ground mortar. The surface of the anchor hole obtained in this way is a fresh cutting surface and is free of impurities such as efflorescence and dirt that lower the adhesiveness. Therefore, the adhesion of the adhesive filling the groove and the anchor hole is reliable. Therefore, it can be said that the adhesion reliability is high.

In the groove and anchor hole for fixing the base mortar by the method of the present invention to the frame concrete, the tile facet, the tile tensioning material surface, the base mortar surface, and the frame concrete surface are exposed. By filling the holes with adhesive, anchor pin vertical members in the anchor holes, and anchor pin cross members in the grooves, it is possible to integrate the existing tile finish layer and the entire frame concrete. Thus, it is possible to reliably prevent the falling of the existing tile and the base mortar.

In the construction method of the present invention, since the anchor pin vertical member and the anchor pin cross member are divided, even if the anchor hole drilling operation is slightly perpendicular to the wall surface as a standard, the anchor pin cross member Can be inserted in parallel with the wall surface. That is, in the integrated T-shaped anchor pin, the angle of the accommodation in the groove becomes uneven due to the inclination of the anchor hole, and if the inclination is significant, the accommodation may be hindered, but this drawback is solved.

Since the anchor pin cross member inserted in the groove can be inserted in a state parallel to the wall surface, the method of the present invention is a method that does not cause any trouble on the finished surface due to the anchor pin cross member.

The number of anchor pins used per square meter for anchoring existing tiles and foundation mortar to the concrete by the construction method of the present invention, the length of anchor pin vertical members, and the installation location, etc. are the thickness of the foundation mortar, its own weight, the mortar It can be determined in consideration of the cracking condition, the mortar peeling condition, the shape of the wall surface, external force (wind power, seismic force), and the like.

In order to solve the above-mentioned problems, the present invention aims to obtain an existing tile fall prevention method characterized by having the following configuration as a method for preventing fall of an existing tile in a reinforced concrete structure. In the invention described in claim 1, as a repair / reinforcement method for finishing the mortar base tile of the reinforced concrete structure, the groove reaching the inside of the base mortar by exposing the tile edge of the tile drop prevention groove installation point Engraving and finishing the surface of the adhesive smoothly after filling with the adhesive, and engraving the groove reaching the inside of the base mortar by exposing the tile edge of the anchor pin installation point for the base mortar fall prevention, An anchor hole that penetrates the base mortar and reaches the inside of the concrete frame is drilled at the center of the groove, and the groove and anchor hole are filled with adhesive, and the upper end is -Smoothly finish the surface of the adhesive after inserting a vertical C-shaped anchor pin and a bar-shaped anchor pin cross member having a bent portion that fits with the pin cross member and a bent portion that enhances the adhesive effect at the lower end. The technical means of preventing the fall of the existing tile by adopting the process was adopted.

As a method for reinforcing / repairing an existing tile in a reinforced concrete structure, it is a fall prevention method for an existing tile characterized by having the following performance. 1. Since the grooves and anchor holes for preventing the tile and the base mortar from falling are provided in the existing tile joints, design changes hardly occur, and no trace of repair / reinforcement occurs. 2. The grooves and anchor holes for preventing the tile and ground mortar from falling are formed by engraving by a machine so as to reach the interior of the ground mortar or the inside of the frame concrete from the tile ground, so the ground mortar surface and concrete Since the surfaces and the like are fresh and the adhesiveness of the adhesive to these surfaces can be obtained with certainty, the bonding reliability is high. 3. In order to prevent the tile and ground mortar from falling, a reinforcing effect can be obtained by providing grooves and anchor holes and filling with adhesive, but also by using adhesives and molding materials such as anchor pins in combination. Since an effect is also acquired, it is the construction method which can anticipate the outstanding durability with respect to fall prevention of a tile or base mortar. 4). Even if the drilling angle of the anchor hole is different, the anchor pin cross member is always inserted into the groove in a state parallel to the wall surface by the mechanism that divides and fits the anchor pin vertical member and the anchor pin cross member. Therefore, the anchor pin does not hinder the joint finish. 5). When the coating thickness of the base mortar is thin, or when tiles are directly attached to the frame concrete, provide a tile fall prevention groove so as to reach the inside of the frame concrete, and fill this groove with adhesive. It is possible to prevent the tile from falling. 6). To prevent the tile from falling, a tile fall prevention groove is provided so as to reach the inside of the base mortar or frame concrete, and the inside of this groove is filled with an adhesive. However, it is necessary to provide a groove on all four sides of the tile. In addition, the effect of preventing the tile from falling can be obtained by the adhesive effect of the adhesive in the groove provided in contact with a part of the tile edge. 7). A groove is arranged at the intersection of three tiles at the umbo joint, or at the intersection of four tiles at the mom joint, and the effect of preventing the tile from falling is obtained by the adhesive effect and integration effect of the adhesive filling the groove including the tile edge. It is done. 8). When fixing the foundation mortar for tile finishing to the concrete, by making grooves and anchor holes in several places per square meter, filling the grooves and anchor holes with adhesive, and inserting anchor pins The effect of preventing the tile and the base mortar from falling can be obtained. 9. Since it is possible to systematically install grooves and anchor pins regardless of whether tiles and ground mortar are lifted, it is possible to omit the investigation of floats on existing tiles and ground mortar. Easy budget planning. [Best Mode for Carrying Out the Invention]

As an anti-drop technique for finishing existing tiles, grooves that reach the interior of the underlying mortar are cut into the existing tile joints and filled with adhesive, and some grooves are provided with anchor holes that reach the interior of the concrete. It was realized by integrating the existing tile finishing layer and the concrete frame by filling the anchor hole with adhesive and inserting the bifurcated anchor pin into it.

An embodiment of the present invention shown in claim 1 will be specifically described below with reference to the drawings.
As shown in FIG. 1, on the existing tile finish wall surface, tile dropping prevention groove installation point 6 and ground mortar dropping prevention anchor installation point 7 (5 per square meter) at the intersection of tile joints 5 in units of four tiles 4 Place at about 45 cm intervals).

As shown in FIG. 2, a groove 8 having a length of about 100 mm and a depth of 10 mm is formed inside the ground mortar on the tile joint 5 of the tile dropping prevention groove setting point 6 and is exposed inside the groove 8. The surfaces of the tile edge 4a, the tile attaching material 3 and the base mortar 2 are cleaned by air blow or brushing.

As shown in FIG. 3, the groove 9 is filled with an adhesive 9 (injection epoxy resin for building repair), and the surface of the adhesive 9 is finished smoothly.

As shown in FIG. 4, a groove 8 having a length of about 100 mm and a depth of 10 mm is formed inside the ground mortar on the tile joint 5 at the anchor pin installation point 7 for preventing the ground mortar from falling. An anchor hole 10 having a diameter of 6 mm and a depth of 25 mm is drilled inside the concrete, and the tile edge 4a, the tile tensioning material 3, the base mortar 2 and the anchor hole 10 exposed in the groove 8 are blown by air, or Clean with a brush.

As shown in FIG. 5, the groove 8 and the anchor hole 10 are filled with the adhesive 9, and the anchor pin vertical member 12 is inserted into the anchor hole 10, and the anchor pin vertical member 12 (plate thickness 1 mm, plate width 4 mm, C An anchor pin cross member 11 (diameter 2 mm, rod shape, SUS304) fitted to the shape, SUS304) is inserted into the groove 8 to finish the surface of the adhesive 9 smoothly. That is, the tile edge 4a, the tile tensioning material 3, the base mortar 2, and the entire frame concrete 1 are integrated.

FIG. 6- (a) shows a planar shape (bar shape) of the anchor pin cross member 11 used in this embodiment. 6 (b) shows the side surface shape (C-type) of the anchor pin vertical member 12, the upper part being a bent part 12a for fitting with the anchor pin cross member 11, and the lower part being an adhesive 9. It is the bending part 12a for improving the adhesive effect. FIG. 6C is a perspective view in which the anchor cross member 11 and the anchor vertical member 12 are fitted.

The present invention can also be applied to stone fall prevention in stone finishing of reinforced concrete structures and stone finishing of precast concrete panels.

FIG. 1 shows an arrangement of a tile fall prevention groove installation point and a tile and ground mortar fall prevention anchor pin installation point in an existing tile fall prevention method according to one embodiment of the present invention. -(A) is a sectional view taken along line AA, and FIG. 1- (b) is a front view. FIG. 2- (a) is a cross-sectional view taken along the line BB in FIG. 2- (a), showing a groove reaching the inside of the base mortar among the existing tile fall prevention methods according to one embodiment of the present invention. (b) is a front view. FIG. 3 (a) is a cross-sectional view taken along the line C-C in FIG. 3 (a), showing the filling of the adhesive into the groove of the existing tile fall prevention method according to the first embodiment of the present invention. -(B) is a front view. FIG. 4- (a) shows a groove and an anchor hole provided at a tile and an anchor pin installation point for ground mortar fall prevention among existing tile fall prevention construction methods according to one embodiment of the present invention. DD sectional drawing, FIG.4- (b) is a front view. Of the existing tile fall prevention method according to claim 1 of the present invention, the anchor pin vertical member and the anchor pin cross member are inserted after filling the groove and the anchor hole with the adhesive. 5- (a) is a cross-sectional view taken along line EE, and FIG. 5- (b) is a front view. Of the existing tile fall prevention method according to the first embodiment of the present invention, FIG. 6- (a) is a plan view of an anchor pin cross member, and FIG. 6 (b) is a side view of an anchor pin longitudinal member. FIG. 6C is a perspective view in which an anchor pin cross member and an anchor pin vertical member are fitted. Of the tile fall prevention methods using T-shaped anchor pins, T-shaped anchor pin installation grooves and anchor holes are shown. FIG. 7- (a) is a cross-sectional view taken along the line I-I, and FIG. It is a front view. Of the tile fall prevention methods using T-shaped anchor pins, T-shaped anchor pin installation grooves and anchor holes are filled with adhesive, and the insertion of T-shaped anchor pins is shown. Is a sectional view taken along line JJ, and FIG. 8- (b) is a front view.

Explanation of symbols

1: Frame concrete 2: Base mortar 3: Tile adhesive material 4: Tile 4a: Tile edge 5: Tile joint 6: Tile drop prevention groove installation point 7: Tile and foundation mortar fall prevention anchor pin installation point 8: Groove ( Tile drop prevention groove) 9: Adhesive 10: Anchor hole 11: Anchor pin cross member 12: Anchor pin vertical member 12a: Bending portion T: T-shaped anchor pin

Claims (1)

As a repair / reinforcement method for mortar foundation tile finishing of reinforced concrete structures, the tile facet of the tile drop prevention groove installation point is exposed and a groove reaching the inside of the foundation mortar is engraved and the adhesive is applied after filling with adhesive. The process of smoothing the surface, the engraving of the groove that reaches the inside of the foundation mortar by exposing the tile edge of the anchor pin installation point for preventing the fall of the foundation mortar, and the inside of the reinforced concrete through the foundation mortar at the center of the groove Is a C-shape having a bent portion that fills the groove and the anchor hole with an adhesive, fits to the anchor pin cross member at the upper end, and a bent portion that enhances the adhesive effect at the lower end. A tile fall prevention method comprising a step of smoothing the surface of an adhesive after inserting an anchor pin longitudinal member and a bar-shaped anchor pin transverse member.

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