JPS60168873A - Crack repairing method of tile surface of outer wall - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention provides a method for repairing cracks on an exterior wall tile surface, and furthermore,
The present invention relates to a method for repairing cracks on the surface of exterior wall tiles, which has excellent stacking efficiency and work efficiency, and which can prevent the occurrence of cracks.

Traditionally, cracks in tiles have been a somewhat fateful phenomenon that occurs even with slight deformation because the tiles themselves are made of materials that are prone to cracking. The method of repair has been taken up as an issue in the law.

Cracks not only impair the appearance of tiles, but also cause problems such as water leakage and reduced durability of structures, so how to repair them is an important issue.

Generally speaking, the repair method is to use a hand sander using a motor to cut the joints of the tiles into V or U along the cracks.
A filling method is used in which the grooves are cut into shapes, the grooves are then filled with sealant, and the surfaces are smoothed using a sander or the like.

However, with this method, when cutting grooves with a hand sander, the vibrations may cause the tiles to float and peel, so the work requires extreme caution. There are problems such as slow cutting speed and inability to perform precision work.

In addition, when filling and hardening a sealant in the groove after cutting the groove, generally a synthetic resin such as epoxy resin or urethane resin is used as the sealant to repair and harden the cracked area, but this may cause cracks in other areas. There are drawbacks to it.

As a result of research to eliminate the drawbacks of these conventional methods, the present inventors have invented a new repair method based on a completely new idea.

The first object of the present invention is to use a high-speed micro grinder using a compressor, which is widely used as a dental grinder, for cutting grooves for repairing cracks in tiles.

Advantages of using a dental grinder: (1) Hand sander (rotation speed 5.000 rpm)
In comparison, a dental grinder rotates a carbide drill or a Dianmoto drill at high speed (aoo, ooo rpm), which significantly increases the groove cutting speed and improves work efficiency.

(2) Hand sanders produce vibrations that reduce accuracy, but dental grinders use air to cool the tip of the blade, allowing for more precise grooving.

(3) Since there is no vibration, tiles will not float or peel.

(4) Since it is lightweight, there is less fatigue when using it.

A second object of the present invention is to use hydratable foamed urethane as a filler and as a base material. Traditionally, waterproofing repairs caused by cracks involve more than just temporary repairs.
8. It must last for a long time even after repair, and the repair will not cause cracks in other parts.
It is said to be tatami. As described above, the present invention fills the grooves cut with a high-speed grinder with hydratable foamed urethane as a base agent, so that the base agent penetrates into every corner of the minute cracks. Since the foam is bonded to the surface, it also has a cushioning effect and does not cause cracks to develop in other parts. Next, seal the repaired area with a sealant such as epoxy resin to make the surface smooth and
Complete waterproofing repairs.

The repair method of the present invention will be explained in detail below with reference to the drawings.

A square or U-shaped groove 4 is cut in the tile joint crack 3 caused by the crack 2 on the surface of the tile 1 using a dental high-speed grinder without peeling off the tile. Next, the groove 4 is filled with water-friendly urethane foam 5. Hydable urethane has excellent permeability and affinity for tiles and concrete, so it can fully penetrate into cracks on the top, bottom, left and right sides along crack 2.
14 The urethane permeated through the grooved part 4 of the contact part %-p, r It can be filled with foamed urethane at any time. Next, the tile surface is sealed with a sealing material 6 to make the surface smooth, thereby performing crack repair and waterproofing on the tile surface.

The construction method of the present invention has been described in detail above, but according to the present invention,
On the tile surface of the exterior wall where cracks have occurred, simply scrape away only the parts where the cracks appear at the joints without removing the tiles, and fill and press-fit a penetrating waterproofing agent into the cracks from this cut part. The waterproofing agent penetrates even the hidden cracks, and since this is done from the upper and lower joints, it is completely filled. Since the filler used is foamed polyurethane with cushioning properties, it does not induce cracks in other parts of the base even after repair, which is an outstanding effect not found in conventional repair methods.

[Brief explanation of the drawing]

FIGS. 1 and 2 are plan views illustrating the method of the present invention;
and a cross-sectional view.

Claims (1)

[Claims] As a method for repairing cracks on the surface of exterior wall tiles, when cutting grooves at the joints of the tiles along the cracks, the grooves are cut using a dental grinder or a known high-speed micro grinder at the joints without removing the tiles. After the grooves are cut, a permeable waterproofing agent made of water-friendly foamed polyurethane resin is used as a filling material, and the filling is press-fitted.