JPS6013111B2 - Equipment for repairing floating walls of concrete, etc. - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is a device for repairing floating that occurs between a wall surface such as concrete and a covering material such as mortar, tile, or stone that is painted or attached to the wall surface. It is related to.

(Adhesive technology and its problems) Many of the walls of concrete structures are painted or attached with facing materials such as mortar tiles and stone, but as time passes, the adhesive strength weakens and the bond between the two becomes weaker. If floating occurred and this was left untreated, the mortar would eventually peel off and fall, which was dangerous.

In order to prevent mortar falling accidents, when the mortar becomes floating, adhesive is injected into the floating part to bond the mortar to the concrete.
Generally, it is carried out through the following steps.

That is, as shown in FIGS. 1 to 3, holes are made with a concrete drill at intervals of approximately 20 to 30 skins from the top of the mortar 2 to the floating portions 3 formed between the concrete 8 and the mortar 2. Drill 4.

At this time, the bottom part 5 of the cutout 4 is placed in the concrete 1. Next, clean the inside of the hole 4 to remove chips, etc.
As shown in FIG. 2, the nozzle 6 of the adhesive filling machine is pressed into the hole 4, and the adhesive 7 is press-fitted.

The adhesive 7 enters the floating part 3 from the hole 4 as shown by the arrow, and when the floating part 3 is sufficiently filled with the adhesive 7, the press-fitting is stopped, and then the hair anchor bolt 8 is pushed into the hole 4. Finally, the entrance of the hole 4 is closed with putty 9. After curing for 2 hours to 4 hours, the adhesive 7 hardens and the mortar 2 firmly adheres to the key concrete.

Although this process can produce sufficient technical effects, the following drawbacks are observed in the process.

That is, when press-fitting adhesive, the adhesive first fills the hole and then advances to the floating part, so it is not possible to obtain sufficient injection pressure. The injection time will be longer.

Also, when pushing an anchor bolt into a hole filled with adhesive, the adhesive will overflow from the entrance of the hole, so this adhesive must be treated before closing the hole with putty. If such a process were to be carried out over the entire wall surface, the time required for repair work would be long and the work efficiency would be poor.

Also, in Jitsuneki No. 56-59556, instead of the anchor bolt, a pipe suitable for the adhesive injection tool is inserted into the hole, and a small hole bored in the L pipe or an annular groove suitable for the small hole is inserted into the hole. Techniques are disclosed for injecting adhesive into the holes.

However, when a small hole is formed in the pipe, as stated in the above publication, ``the small hole is easily clogged with the inner wall surface of the hole formed in the concrete wall, and the adhesive agent is ejected.'' There is also a drawback that the adhesive cannot be filled into the floating part unless the position of the small hole is completely aligned with the floating part.

In addition, for pipes with an annular groove, although it is possible to avoid the situation where the adhesive outlet is blocked to some extent, if the annular groove does not align with the floating part, it is necessary to completely fill the adhesive into the floating part. This means that you will not be able to do so. (Technical Problem) The present invention is characterized by the fact that even when injecting adhesive into a floating part using a pipe passed through an adhesive injection nozzle, there are differences in the depth of the hole drilled in the outer wall and the thickness of the covering material. The aim of this project was to allow the adhesive to smoothly enter the floating portion without lowering the injection pressure of the adhesive.

(Technical Means) In order to solve this technical problem, the present invention also includes forming a plurality of longest notches and a slip-off prevention means in the circumferential wall of the adhesive injection pipe in all axial directions. This is a technical means.

(Effect of technical means) According to this technical means, even if there are variations in the depth of the hole and the thickness of the covering material, since a long notch is formed in the circumferential wall of the pipe in the direction of the gill. The cutout portion can reliably capture the floating portion, and the cutout portion will not be blocked by the inner wall of the hole.

(Effect of the invention) As a result of the notch part of the pipe reliably capturing the floating part, the adhesive can directly enter the floating part without lowering the injection pressure ~ the floating part can be sufficiently filled with the adhesive, and Press-fitting work can be completed in a short time.

Also, unlike reinforcement using conventional anchor bolts, there is no overflow when inserting the bolts, and it is easy to close the holes with putty, resulting in good work efficiency and a beautiful finish.

The pipe in the above-mentioned technical means is left in the hole after the adhesive is injected, becomes integrated with the key body and the covering material such as concrete as the adhesive hardens, and as shown in the examples described below, The floating part will be sufficiently reinforced by this action.

(Example) Next, repair using the above-mentioned pipe will also be explained using drawings.

Regarding the floating electric shock that occurred between the concrete sergeant and the mortar military house, the process of drilling the hole turtle umbrella and cleaning the hole turtle was the same as the method of the subordinate.

Next, insert the hole-den mother writing pipe 2 turtle, press the nozzle turtle 6 of the adhesive filling machine against the rear end of the top pipe 2 crab, and push the adhesive Kameari through the inside of the pipe cod fin. As shown in FIG. 6, the pipe 281 has the four longest notches 2 that reach the pipe wall closing and the tip, and a concave groove 3 is formed on the outside of the tip of the pipe 281. is engraved in the direction that intersects the direction of the scales.

Therefore, when the adhesive is press-fitted, the adhesive passes from the inside of the pipe 2 through the notch 2 and directly into the floating part 3.
At the same time, it also enters the gap between Pipe Maishu and Anagame Kame.

When the filling of the floating member 3 is completed, remove the nozzle light and
The repair work was completed by leaving the pipe 28 in the hole gun 4 and blocking the entrance of the rear hole wing turtle with putty or other adhesive.
(See Figure 5) also undergoes a training period, and the key body concrete force 1 and mortar wealth 2 are strongly bonded.

In this example, since the concave groove is provided on the outside of the pipe, this concave groove acts as a stopper after the post-adhesive hardens, and performs the same function as the conventional method of anchor bolts. In terms of strength, there is no difference from the case using the follow-up method.

Further, in the above embodiment, the pipe has four notches, but an appropriate number may be selected depending on the condition of the floating portion.

Further, although two grooves are carved at the tip of the pipe, these grooves may be formed over the entire length, and the shape may not be groove-like but may be a hole-like recess. The above pipe has an adhesive inlet and a retaining means formed separately, but as shown in Fig. 7, a long hole is formed in the pipe wall to serve both as an inlet and a retainer. 25 may be bored and the green end of the elongated hole may have a retaining effect.

In this case, it goes without saying that a concave groove may be formed in the outer circumferential wall of the t-pipe to further strengthen the retaining effect.

[Brief explanation of the drawing]

Figures 1 to 3 are for explaining the conventional repair method. Figure 1 is a sectional view of a wall with holes drilled, and Figure 2 is a sectional view of a wall showing press-fitting of adhesive. is a sectional view of the wall showing the completed repair. Figures 4 to 7 show examples of the present invention. Figure 4 is a sectional view of a wall into which a pipe has been inserted, Figure 5 is a sectional view of a wall after repair, and Figure 6 is a sectional view of a wall where a pipe has been inserted. Perspective view of 7th
The figure is a side view of a pipe in another embodiment. 1 turtle...
Key body concrete, 12... mortar, 13 floating part, 14
...hole, 20...pipe. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

Claims (1)

[Scope of Claims] 1. A pipe for injecting an adhesive to be inserted into a hole drilled in a floating part of an outer wall made of mortar, tiles, stones, etc. A pipe characterized by forming a notch and a retaining means. 2. The pipe according to claim 1, wherein the cutout is a long hole. 3. The pipe according to claim 1, wherein the tip of the notch reaches the tip of the pipe. 4. The pipe according to claim 1 or 3, wherein the retaining means is a recess carved in the outer peripheral wall of the pipe.