JPH01230863A - Filling repair method for clearance part in building and filling repair device used in said method - Google Patents

Abstract

PURPOSE:To prevent a crack and exfoliation by injecting hot air preheating a clearance part in a building thereafter forcing melted paraffin to be press fitted into the clearance part. CONSTITUTION:Paraffin in a melted condition is contained in a vessel 18. Next hot air is blown to a clearance in construction of a structure from a jet port of an injecting jig 10a in an injection control part 8, heating a peripheral edge of the clearance in construction. Subsequently, an air compressor 34 is driven pressing down a piston giving a delivery pressure to the paraffin in the vessel 18. And adjusting a knob 38 jetting an optimum amount of paraffin, the clearance is filled in its inside with the paraffin. Further when the paraffin adheres to a mouth part of the clearance in a swelling condition, an injecting jig 10b, provided with a brush in a mouth end of a jet port 9, is connected, injecting hot air from the jet port, and the paraffin, while it is maintained in a melted condition, is spread extending by the brush.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for filling and repairing gaps in buildings for repairing cracks in concrete and gaps in various structures, and a filling and repair method used in the method. Regarding equipment.

<Prior Art> If cracks in concrete or gaps in various structures are left untreated, rainwater will soak in and accelerate the deterioration of the structures, so their repair is urgent.

Conventionally, this repair was performed by pushing a resin filler such as epoxy resin into the gap.

<Problems to be Solved by the Invention> However, epoxy resin has no elasticity after solidification and cannot follow the thermal expansion of concrete. It cracks and peels and has poor durability. Additionally, UV rays cause deterioration over time, which tends to make them brittle. Furthermore, (a) it has drawbacks such as poor water-stopping effect because it is not aqueous.

The present invention aims to improve the drawbacks of such repair methods.

<Means for Solving the Problems> A first invention provides a gap in a building, characterized in that the gap in the building is preheated by hot air injection, and molten paraffin is press-fitted into the gap. This is a method for filling and repairing parts.

A second invention is an apparatus for carrying out the method, which includes a blower, a heater for heating the jet air, and an injection port provided at the tip of a pipe communicating with the injection port of the blower. A heat retention tank equipped with a hot air injection device, a heater that heats the stored paraffin to a temperature higher than its melting temperature, and a pressure device that applies discharge pressure to the paraffin, and a pipe line that communicates with the discharge port of the heat retention tank. This is a construction gap filling and repair device characterized by comprising an injection nozzle that is provided at the tip of the spray nozzle and whose opening and closing are controlled by a valve.

Effect> In the first invention, paraffin has good elasticity and therefore easily follows the thermal expansion of concrete. Furthermore, due to its water repellency, it has the advantage of having a large water-stopping effect on the concave surface of the gap. On the other hand, paraffin has a high melting point of about 4
It is 8 degrees or more. For this reason, it solidifies at room temperature, and even if the paraffin itself is kept above its melting point, if the area to be applied is at a low temperature, the paraffin will absorb heat and solidify before it can penetrate into the gaps. Otherwise, the filling will be defective. For this reason, paraffin has not been used at all for filling construction.6 Therefore, paraffin can be used by preheating the gaps in buildings by jetting hot air, and molten paraffin is poured into the gaps. It was designed to be press-fitted into the gap.

The second invention is an apparatus for implementing the method, which injects hot air supplied from a nozzle of a hot air injection device into a construction gap, preheats the construction gap, and melts the melt into a heat insulating tank. The paraffin stored in this state is press-fitted into the gap, and the gap is filled with paraffin.

<Example> A filling repair device according to the present invention will be explained with reference to the accompanying drawings.

In Fig. 1, 1 is a truck on which wheels 2 are pivotally supported;
A hot air injection device 4 and a heat insulating tank 17 are installed on a support base 3 fixed to the front part. Further, an electric control panel 45 is mounted on the rear part of the truck I.

To explain the hot air injection device 4, 5 is a blower, and a flexible hose 6 is connected to its injection port. Further, at the tip of the flexible hose 6, as shown in FIGS. 2 to 4, an injection control section 8 equipped with a heater 7 is provided, and its injection tube 9
The injection jig 10a and the lob are fitted onto the mouth end of the injection jig 10a, and are removably attached by tightening the port 11.

As shown in the figure, the injection jig 10b has its tip constricted, the brush 12 is engaged, and openings are secured at both ends to form injection ports 13b. The injection jig tob
As shown in FIG. 7C, the brush 12 is provided so that the paraffin p supplied to the construction gap y of the structure X can be leveled on the application surface and the filling can be performed beautifully. There it is,
Since it is not necessary for preheating before supplying paraffin, an injection jig 10a (see FIG. 7A) without a brush 12 is attached. In addition, injection jigs are available in various shapes, such as elbow-shaped ones and ones with different sizes of apertures at the tip, depending on the position and shape of the construction gap y of the structure X. , is fitted to the mouth end of the injection cylinder 9.

Further, the injection control section 8 is equipped with a heater temperature setting dial 14 and an air volume adjustment knob 15.

Next, the structure of the heat insulating tank 17 will be explained with reference to FIG.

Reference numeral 19 denotes a cylindrical case, and the container 18 is constructed by fitting a bottom cover 20 to the lower end of the cylindrical case. The bottom cover 20 is provided with a floating air inlet 21 and an outlet 22, a heater 23 is placed thereon, and a temperature sensor 24 is attached to detect the temperature heated by the heater 23.

Further, a pressurized air supply port 25 is formed at the upper edge of the cylinder u19.

A piston 28 constituting an example of a pressurizing device is fitted into the container 18, and a top lid 30 is placed on the container 18 to make it airtight. The piston 28 is
It moves freely due to the pressure difference between the upper and lower chambers divided by , and an interlocking bottle 29 projects upward from the center thereof.

Furthermore, the linking bin 29 is located at the lower center of the upper lid 30.
A connecting hole 31 is formed through which the connecting hole 31 is inserted, and a moderation method 32 is held near the upper side of the connecting hole 31. When the piston 28 rises as the pressure in the lower chamber increases and the connecting pin 29 is inserted into the connecting hole 31, the moderation method 32 is applied to the reduced diameter portion 33 formed on the circumferential surface of the connecting pin 29. The screws 28 and the top cover 30 are connected by extension. Further, the upper lid 30 is removably fixed by a known connecting member 33, 33 attached to the cylindrical housing 19.

Further, in the above configuration, the floating air inlet 21 and the air supply port 25 are communicated with the discharge side of the air compressor 34 provided on the heater 7 via the switching valve 35.

Further, a flexible outlet pipe 36 is connected to the discharge port 22 . A flow rate regulating valve 37 adjusted by a knob 38 is provided at the tip of the flexible outlet pipe 36, and an injection nozzle 39 is connected to the mouth end thereof.

The operation procedure of the filling and repairing device having such a configuration will be explained below.6 Inside the container 18, there is a piston 28 connected by a linking bottle 29. The upper lid 30 is removed and paraffin p is supplied. And piston 28. After the upper lid 30 is attached, the paraffin p is heated to a melting point or higher by the heater 23 to be in a molten state.

Next, the injection jig 10a without the brush 12 is fitted into the injection tube 9 of the injection control section 8 in advance, and the injection jig 10a of the injection control section 8 is placed in the construction gap y of the structure X, as shown in FIG. Hot air is blown from the injection port 13a of the tool 10a to heat the periphery of the construction gap 7. The temperature and air volume can be set using the setting dial 14.
It is adjusted with the air volume adjustment knob I5.

Furthermore, after that, the air compressor 34 is driven to compress the piston 2.
Pressurized air flows into the upper chamber of 8 from the air supply port 25 to push down the piston 28. This pressurization causes the piston 2
The linking bottle 29 of No. 8 descends against the coupling force of the moderation method 32, is disconnected from the upper lid 3o, and moves down inside the container 18 as shown by the chain line in FIG. Then, the lower chamber of the piston 28 is kept at a high pressure, and a discharge pressure is applied to the paraffin p. After that, adjust the knob 38 as shown in Figure 7,
An optimal amount of paraffin p is injected into the construction gap y.

Paraffin p is filled into the construction gap y, and the construction gap y
After the paraffin P has adhered to the mouth part in a swollen shape, the injection jig 10b having the brush 12 shown in FIGS. 2 to 4 is connected to the end of the injection tube 9, and the injection jig 10b shown in FIG. While maintaining the paraffin p in a molten state by injecting hot air from the injection port 13, the paraffin p is spread with the brush 12, and the paraffin p is leveled at the mouth of the construction gap y.

When the paraffin p in the container 18 is exhausted, the switching valve 35 is switched to allow pressurized air to flow in from the flotation air inlet 21 to make the lower chamber of the piston 28 a high pressure and float the piston 28. The linking pin 29 is inserted into the linking hole 31 of the upper M30, and the one moderation ball 32 is fitted into the reduced diameter portion 33.

When the connecting member 34 is opened and the upper M3o is removed, the piston 28 connected by the connecting hole 31 can also be removed as a whole, and the paraffin p is supplied from the opening of the container 18.

Incidentally, a supply port for paraffin p may be separately provided on the side of the container.

In the structure of the heat retention tank 17, the piston 28 is
The advantage is that the paraffin p can be freely raised and lowered within the container 18, and since the structure does not use a rod or the like, there is no need for a shaft sealing means, and it is possible to supply paraffin p into the container 18 without complicating the structure. There is.

As shown in FIG. 6, in the pressurizing means for the heat-retaining tank 17 described above, a spring 42 is provided between the piston 40 and the upper lid 41.
The piston 40 may be biased downward by being attached with the piston 40. In this case, the spring 4 is attached to the lower surface of the upper lid 41.
2 forms a guide cylindrical portion 43 that can be fitted onto the outside, and a linking pin 44 has a length such that it can be inserted into the upper lid 41, which has become higher due to the formation of the guide cylindrical portion 43, and protrudes upward.

In this configuration, the paraffin p is applied with a pressure force by the piston 40 urged by the spring 42, thereby applying a discharge pressure. In addition, in order to integrate the piston 40 with the upper i41 and remove it together with the M41, the ring-shaped grip 45 provided at the upper end of the linking pin 44 is pulled against the spring 41, and the linking pin 44 may be engaged with the moderation method 46.

In addition, even in such a configuration, the linking bottle 29 may not be made to protrude outward, but may be confined within the container 18.

<Effects of the Invention> In the first invention, after the construction gap y of the structure X is preheated in advance as described above, the paraffin p is filled into the construction gap y. Therefore, a) Due to the elasticity of the paraffin p, it adapts to the thermal distortion of the structure X and does not cause cracking or peeling.

b) Due to the water repellency of paraffin p, there is a water-stopping effect, and water will not enter the construction gap y and further enlarge the cracks.

C) It is easy to handle because it uses a single material.

d) The heating and solidification cycle allows the newly filled material to blend well with the already supplied material, making re-repair easy.

Moreover, the second invention has the effect of being able to optimally implement the above-mentioned method.

[Brief explanation of the drawing]

The accompanying drawings show embodiments of the present invention, and FIG. 1 is a side view of the filling and repair device, FIG. 2 is a partially cutaway plan view showing the injection jig 10b, FIG. 3 is a partially cutaway side view of the same, and FIG. The figure is the same front view,
FIG. 5 is a partially cutaway side view of the heat insulating tank 17, FIG. 6 is a vertical sectional side view showing the upper part of another embodiment of the heat insulating tank 7, and FIG. 7 is an explanatory view showing a repair process. l: Truck 5 Ni blower 6: Flexible hose 7: Heater 8: Injection control section 10a, lOb: Injection jig 13a
, 13b; Injection port 17: Heat retention tank 21: Floating air inlet 22: Discharge port 23: Heater 25: Air supply 028: Piston 29: Interlocking bottle 30: Top lid 36
: Flexible outlet pipe 39: Injection nozzle 40: Piston
41: Spring X: Structure y: Construction gap p: Paraffin

Claims (1)

[Scope of Claims] 1) A method for filling and repairing a gap in a building, which comprises preheating the gap in the building by jetting hot air, and then press-fitting molten paraffin into the gap. 2) A hot air injection device consisting of a blower, a heater that heats the injection air, and an injection port provided at the end of a pipe communicating with the blower injection port, and a hot air injection device that heats the stored paraffin to a temperature higher than its melting temperature. A heat retention tank equipped with a heater and a pressurizing device that applies discharge pressure to the paraffin; and a heat retention tank provided at the tip of a pipe communicating with the discharge port of the heat retention tank,
A filling and repair device for a construction gap, comprising an injection nozzle whose opening and closing are controlled by a valve.