EP0687333A1

EP0687333A1 - Device and process for introducing a hardenable liquid into an absorbent solid

Info

Publication number: EP0687333A1
Application number: EP93920660A
Authority: EP
Inventors: Hermann Terborg
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-04
Filing date: 1993-09-24
Publication date: 1995-12-20
Anticipated expiration: 2013-09-24
Also published as: EP0687333B1; WO1994020700A1; DE59309948D1; DE4306687C2; ATE189497T1; DE4306687A1

Abstract

A device for introducing a hardenable liquid (1), especially a capillary waterproofing agent, into an absorbent solid (2), preferably masonry, concrete or timber, with a reservoir (3) containing the liquid (1) and a discharge device (4) connected to the reservoir (3) to conduct the liquid (1) to at least one drilling (5) made in the solid (2), is constructed for the effective introduction into a solid (2) having internal cracks (11), gaps, spaces, large pores, etc., in such a way that the discharge device (4) has an absorbent swelling body (6) at least partly filling the drilling (5). A process for using the device of the invention is also described.

Description

"Device and method for introducing a curable liquid into an absorbent solid"

The invention relates to a device for introducing a curable liquid, in particular a capillary water barrier, into an absorbent solid, preferably into masonry, in concrete or in wood, with a storage container containing the liquid and an outlet device that is connected to the flow container and is connected to the flow container for delivery the liquid in at least one bore formed in the solid. The invention further relates to a method for introducing a curable liquid, in particular a capillary water barrier, into an absorbent solid, preferably into masonry, in concrete or in wood, using a device according to the invention.

The invention relates generally to the refurbishment of solids that are threatened by rising moisture in their substance. Most of it is rising moisture in masonry or concrete walls. This rising dampness threatening a building is the horror of every homeowner. It is not uncommon for a gradual "creeping up" of moisture in the masonry to lead to a reduction in the living quality and even to a complete destruction of the building. Inside the living rooms, the wallpaper, wooden parts rot on the walls and sponge and mold colonies form. Finally, plaster and parts of the masonry even fall off. There are efflorescences of salt and lime which can only be covered with difficulty or not at all.

Most of the building materials contained in the masonry or in a concrete wall have pores and capillaries which are connected to one another. Consequently, this is an open poro- sity. If, as a result of the aging-related degradation of the protective layer applied from the outside during the new building or after its damage, the groundwater penetrates into the cellar walls, the moisture can be passed on horizontally and vertically, in particular also to higher-lying components , come if there is no horizontal barrier above the ground or does not work. The water is then passed on through capillary forces - within the pores, cracks or capillaries. The height of the water can rise up to a few meters.

From the registered documents of the German utility model G 84 35 438.0, a method for introducing a curable liquid into an absorbent solid is already known, in which case boreholes are also made in masonry. Bottles with an aeration closure are used as storage containers for the liquid used to build up the capillary water barrier. An outlet tube, which extends from the inside of the bottle to the outside, is passed through this closure, the region of the outlet tube located outside the bottle being insertable into the bore. In the area of the closure, a transverse bore is formed which connects the inside of the outlet tube with the interior of the bottle.

A method for introducing a curable liquid into a solid is also known from practice, which uses a device known as a "cartridge system". Closed bottles are provided with a somewhat longer outlet tube and inserted into the bore when filled. The bottles release the liquid just in the amount that is taken up by the masonry. After the liquid has entered the bore, the outlet tube is completely filled with liquid so that no more air can get into the bottle. Accordingly, no liquid run after. After the liquid has seeped away or has been sucked up through the masonry, air again enters the bottle - through the outlet tube - so that liquid from the bottle in turn gets into the bore. A gradual saturation of the masonry is consequently possible. Sufficient and effective metering of the liquid can already be achieved here by simple means.

Now the solids to be provided with a capillary water barrier, in particular masonry or concrete walls, often have very substantial cavities, gaps, cracks and open joints, so that the liquid introduced into the bore by the known methods by means of the known devices is at best can be sucked up by the masonry in a very small amount and largely runs into the cavities - uncontrollably. A distribution of the liquid within the bore and a capillary flow from there into the area of the masonry surrounding the bore is no longer guaranteed. Rather, the relatively expensive curable liquid is wasted.

The previously mentioned problem has so far been attempted to be solved by pouring the hole with a again absorbent filling compound, which at least partially also spreads in the cavities, after this "leakage" located within the masonry. After curing, a hole can then be drilled again so that the curable liquid is poured or poured into a kind of inlet. In practice, however, this is problematic insofar as the process steps - drilling a hole, pouring the hole through a curable and absorbent material in the hardened state, re-drilling a hole and then bringing the liquid into the second hole - are extreme is complex and therefore expensive. This becomes particularly clear when you keep in mind that the Depending on the case of damage, holes must be drilled only a few centimeters from one another in a horizontal line in the often meter-long masonry. Furthermore, filling a hardenable solid into the bore does not guarantee that a cavity within the masonry will actually be filled. Consequently, the possibly not completely poured cavity within the masonry always causes an interruption of the horizontal capillary water barrier, whereby the effectiveness of the horizontal capillary water barrier as a whole is questioned.

The present. The invention is therefore based on the object of specifying a device and a method for introducing a curable liquid, in particular a capillary water barrier, into an absorbent solid, preferably into masonry, in concrete or in wood, with or after which curable liquids can also be introduced into cavities, cracks, gaps and large pores with simple means to form a horizontal capillary water barrier.

The device according to the invention for introducing a curable liquid, in particular a capillary water barrier, into an absorbent solid, preferably into masonry, in concrete or in wood, achieves the above object by means of the features of patent claim 1 The device is designed such that the outlet device has an absorbent swelling body that at least partially fills the bore.

According to the invention, it has been recognized that the cavities, cracks or the like occurring in the interior of a masonry cause an interruption in the liquid line caused by capillary forces. In a further step according to the invention, it was recognized that it is not necessary fill these cavities to the capillary line with an absorbent material. Rather, according to the invention, the cavities or cracks in the interior of the masonry are bridged by an absorbent swelling body which presses against the inner wall of the bore with the curable liquid and at least slightly swells into cavities, cracks or the like. As a result, the cavities or cracks which interrupt the capillary line are effectively bridged, so that the curable liquid, seen in the direction of flow, can spread just as well after a cavity or crack as before. This is due to the fact that the swelling body serving as part of the outlet device transports the liquid as a whole through the bore and, due to the all-round contact with the masonry, the liquid is sucked into the masonry thanks to the capillary forces that occur.

With regard to a particularly simple insertion of the swelling body into the bore or into the masonry or into another absorbent solid body, it is particularly advantageous if the swelling body is designed as an approximately round rod. The bore should be matched to the rod diameter so that the rod or swelling body can be pushed into the bore without hindrance. In other words, the swelling body is introduced into the bore like a bracket. If it is necessary to remove the swelling body again after the capillary water barrier has been put in place, it could be drilled out and the bore filled, for example, with mortar or closed. However, it would also be conceivable to surround the swelling body with a preferably elastic mesh which surrounds the swelling body as a whole and protrudes from the bore. By means of this network the swelling body could be pulled out again by force after the liquid had been introduced from the bore. The network itself could be silicon-coated, so that sliding between The swelling body and the inner wall of the bore are ensured, which is advantageous when the swelling body is pulled out.

As previously mentioned, the swelling body should be matched to the bore or vice versa. For this purpose, the swelling body should be dimensioned in such a way that in the dry state it bores positively or at most with little play, i.e. almost form-fitting, filled and at least largely extends into the hole. This is necessary insofar as it is usually not possible to recognize from the outside of the hole where cracks or cavities are exactly present. In other words, the swelling body should extend almost through the entire bore or just disappear into the bore to such an extent that storage containers or outlet devices, which will be explained later, can be attached to the bore or the swelling body.

The swelling body itself must consist of an absorbent material which swells when a liquid is sucked up. Pressed cellulose material is particularly suitable for this purpose, and it can be recycling cellulose material in a particularly advantageous manner.

In order to be able to effectively place the swelling body in the bore even with little play, a stiffening inner core can be provided to avoid kinking of the swelling body. This inner core is advantageously plastically bendable and stiff in the axial direction. The inner core can be a metal or plastic core.

The storage container already mentioned serves to provide the curable liquid. This liquid, for example CRISIN 76 (registered trademark of Köster Bauche¬mie GmbH), has a resinizing and non-silicifying effect due to its composition or components and thus creates one permanent and elastic capillary water barrier that is not rotten. The reservoir holding this liquid could be designed as a bottle in the context of a particularly simple embodiment of the device according to the invention. One bottle could therefore be used for each bore. The free or open end of the bottle neck could have an outlet nozzle, a flow limiter or a metering device for throttling or metering the liquid flow.

With regard to a particularly simple attachment of the bottle in the area of the bore, the bottle neck could be dimensioned such that its open end at least partially fits or can be inserted into the bore in order to contact the swelling body for the capillary liquid line. In the context of a very particularly secure attachment of the bottle, the bottle neck could be screwed into the bore and, for this purpose, have a type of self-tapping external thread, so that - apart from the bore - no special precautions need to be taken in the masonry.

In the context of a further embodiment, the swelling rod could at least partially protrude into the bottle with its end facing the bottle and be held there by the bottle neck or a closure having a passage. Consequently, the bottle would itself be held in position outside the bore by the swelling body. A stiffening inner core of the source rod according to the previous statements would be of particular advantage here.

In the context of a further advantageous embodiment or embodiment, the outlet device could have an outlet tube attached or screwed onto the open end of the bottle neck. The outlet tube could be dimensioned in such a way that it End facing the storage container can be contacted to the capillary liquid line.

For reliable contacting of the outlet tube, the swelling body could have a bore, recess or the like for inserting the outlet tube at its end facing the storage container, so that the outlet tube protrudes at least slightly into the source body in the working position. Such a configuration of the swelling body has the great advantage that, even with axial displacement of the swelling body or of the storage container, reliable contact and thus a safe liquid line is always guaranteed.

In an alternative embodiment of the device according to the invention, the storage container could be designed as a preferably central tank. The outlet device would then comprise a capillary liquid line leading out of the tank to the swelling body. This would have the very special advantage that numerous bores or swelling bodies can be supplied with liquid from a single storage container, namely from the tank, via a corresponding outlet device. In this respect, no separate containers such as bottles or the like would be required for each well. Central refilling of the tank would also be guaranteed.

In the context of a central supply of liquid from a tank, the source body could be an integral part of the liquid line. For this purpose, it would be advantageous if the swelling body and / or the liquid line were at least largely bendable. The capillary liquid line could be designed in the context of a particularly advantageous embodiment in the sense of an absorbent wick or the like, so that the liquid is already led from the tank into the bore due to capillary forces. Finally, it would be possible in the context of a particularly simple embodiment of the device according to the invention to design the storage container as a pouring vessel, preferably as a watering can, measuring cup or the like. The swelling body would then be the only element of the outlet device, the swelling body having to be sunk in the bore so that liquid can be poured out of the pouring vessel into the bore. It would also be conceivable to place a funnel into the bore, which generally runs obliquely downwards - after insertion of the swelling body - into which the liquid is poured out of the pouring vessel. In this respect, the expenditure on equipment would be relatively low.

The method according to the invention for introducing a curable liquid, in particular a capillary water barrier, into an absorbent solid, preferably into masonry, in concrete or in wood - using a previously discussed device - achieves the above object by the features of claim 21 The process according to the invention then comprises the following process steps:

First of all, a hole is made in the solid body, which generally runs obliquely downward in order to use not only the capillary forces but also the force of gravity acting on a liquid. The source body is then placed in the bore. A flow connection or capillary line is produced between the source body and a storage container containing the liquid. Liquid is introduced from the storage container via an outlet device and the swelling body into the solid body or into the masonry. When the liquid flows into the swelling body, it swells due to the liquid sucked in and presses against the inner wall of the bore. Cavities or cracks or the like are bridged by the swelling body in the sense of a capillary line. There is a capillary lare liquid line created by or in capillary gaps and pores of the solid.

To avoid interruptions in the capillary flow or to avoid blockages, the method according to the invention could be supplemented by cleaning the bore by means of compressed air and / or water after introducing the bore into the solid and before introducing the liquid . A perfect capillary flow into the masonry would be considerably favored.

It would also be conceivable to swell the swelling body before swelling due to the liquid, i.e. mechanically "swell" before introducing the liquid, using a preferably elongated tool, in particular by driving in a mandrel or the like. Thus, even before the liquid was introduced, it would be ensured that the swelling body bears on all sides against the inner wall of the bore and that a capillary line into the solid body is guaranteed right from the start.

Finally, the method according to the invention can be favored in that the establishment of a flow connection between the swelling body and the storage container, the insertion of a bottle serving as a storage container or an outlet tube plugged or screwed onto the bottle neck into the bore and the contacting of the free one End of the bottle neck or the Auslaufröhrchenε with the swelling body, wherein the outlet tube can also protrude into the swelling body.

There are various possibilities for advantageously designing and developing the teaching of the present invention. To this end, reference is made, on the one hand, to the claims subordinate to patent claims 1 and 21, and, on the other hand, to the following explanation of two exemplary embodiments of the inventive to refer to the device based on the drawing. In conjunction with the explanation of the preferred exemplary embodiments of the invention with reference to the drawing, preferred configurations and developments of the teaching are also generally explained. In the drawing shows

1 in a sectional side view, schematically, a swelling body introduced into a hole in a masonry immediately after insertion,

2 in a sectional side view, schematically, the swelling body introduced into the bore in the swollen state,

3 shows a first exemplary embodiment of a device according to the invention, a bottle serving as the storage container, the bottle neck of which directly contacts the swelling body and

4 shows a second exemplary embodiment of a device according to the invention, the storage container being designed as a bottle and the outlet device comprising an outlet tube which extends from the bottle neck into the swelling body.

FIGS. 3 and 4 show two exemplary embodiments of a device for introducing a curable liquid 1, in particular a capillary water barrier, into an absorbent solid body 2, which is a masonry or a concrete wall. The device includes a storage container 3 containing the liquid 1 and an outlet device 4 which is in flow connection with the storage container 3 for bringing the liquid 1 into a bore 5 formed in the solid body 2. In the manner according to the invention, the outlet device 4 has an absorbent swellable body 6 that at least partially fills the bore 5.

Figures 1 to 4 together show that the swelling body 6 is designed as an approximately round rod. The swelling body 6 is dimensioned such that in the dry state (Fig. 1) with little play, i.e. almost form-fitting, the bore 5 fills and largely extends into the bore 5. The swelling body 6 consists of pressed cellulose material, which is a recycled cellulose material.

In the exemplary embodiments of the device according to the invention shown in FIGS. 3 and 4, the storage container 3 is designed as a bottle. In the embodiment shown in FIG. 3, the bottle neck 7 is inserted with its open end into the bore 5 and contacts the swelling body 6 for the capillary liquid line.

In the embodiment shown in FIG. 4, the outlet device 4 has an outlet tube 8 which is inserted into the open end of the bottle neck 7. 4 clearly shows that the swelling body 6 has at its end facing the storage container 3 a bore or recess into which the outlet tube is inserted. In the working position of the device according to the invention shown in FIG. 4, the outlet tube 8 is accordingly inserted into the swelling body 6, so that the storage container 3 designed as a bottle is thereby already held.

2, 3 and 4 clearly show that the swelling body 6 swollen by the absorbed liquid 1 bears on all sides against the inner wall 10 of the bore 5. Consequently, it is effectively bridged in the solid body 2 crack 11 by the swelling body 6 serving as a capillary liquid line. so that the liquid can penetrate both in front of and behind the crack 11 into the solid body 2 or into the masonry due to capillary forces.

With regard to further design options and with regard to the method according to the invention, reference is made to the general part of the description.

In conclusion, it should be pointed out that the two exemplary embodiments previously discussed with reference to the figures are only intended to contribute to an understanding of the teaching according to the invention, but are not restrictive to the two exemplary embodiments.

Claims

1. Device for introducing a hardenable liquid (1), in particular a capillary water barrier, into an absorbent solid (2), preferably into masonry, in concrete or in wood, with a storage container containing the liquid (1) (3) and an outlet device (4), which is connected to the reservoir (3) and is flow-connected, for bringing the liquid (1) into at least one bore (5) formed in the solid body (2), characterized in that the outlet device ( 4) has an absorbent swelling body (6) which at least partially fills the bore (5).

2. Device according to claim 1, characterized in that the swelling body (6) is designed as an approximately round rod.

3. Apparatus according to claim 1 or 2, characterized gekennzeich¬ net that the swelling body (6) is surrounded by a preferably elastic network.

4. Device according to one of claims 1 to 3, characterized ge indicates that the swelling body (6) is dimensioned such that in the dry state it bores the hole (5) positively or at most with little play, i.e. almost form-fitting, fills and at least for the most part extends into the bore (5).

5. Device according to one of claims 1 to 4, characterized in that the swelling body (6) consists of preferably pressed cellulose material.

6. The device according to claim 5, characterized in that the swelling body (6) is made of recycled cellulose material.

7. The device according to claim 5 or 6, characterized gekennzeich¬ net that the swelling body (6) has a stiffening inner liner.

8. The device according to claim 7, characterized in that the inner core is plastically bendable, but is stiff in the axial direction.

9. Device according to one of claims 1 to 8, characterized in that the storage container (3) is designed as a bottle.

10. The device according to claim 9, characterized in that the free or open end of the bottle neck (7) has an outlet nozzle, a flow limiter or a metering device.

11. The device according to claim 9 or 10, characterized gekennzeich¬ net that the bottle neck (7) with its open end in the bore (5) at least partially fits, preferably in the bore (5) can be screwed around the swelling body (6) to contact the capillary fluid line.

12. Device according to one of claims 9 to 11, characterized ge indicates that the swelling rod (6) with its end facing the bottle (3) at least partially protrudes into the bottle (3) and there through the bottle neck (7) or a closure having a passage is held so that the bottle (3) is held in position by the swelling body (6) outside the bore (5).

13. The apparatus according to claim 9 or 10, characterized gekennzeich¬ net, and in that the outlet device (4) comprises an on or in the open end of the bottle neck (7) or plugged or screwed outlet tube (8).

14. The apparatus according to claim 13, characterized in that the outlet tube (8) is dimensioned such that it can be contacted with the swelling body (6) at its end facing the storage container (§) to the capillary liquid line.

15. The apparatus according to claim 13 or 14, characterized gekennzeich¬ net that the swelling body (6) at its end facing the reservoir (3) has a bore, recess (9) or the like. For inserting the outlet tube (8), so that the run-off tube (8) protrudes at least slightly into the swelling body (6) in the working position.

16. Device according to one of claims 1 biε 8, characterized ge indicates that the reservoir (3) is designed as a tank and that the outlet device (4) comprises a capillary liquid line leading out of the tank to the source body (6).

17. The apparatus according to claim 16, characterized in that the swelling body (6) is an integral part of the liquid line.

18. Device according to 16 or 20, characterized in that the swelling body (6) and / or the liquid line is at least largely plastically bendable.

19. Device according to one of claims 16 to 18, characterized in that the capillary liquid line is designed in the sense of an absorbent wick or the like.

20. Device according to one of claims 1 to 8, characterized ge indicates that the storage container (3) as a pouring vessel, vorzugεweiεe as a watering can, measuring cup or the like, and that only the source body (6) as Auslaufeinrich¬ device (4) serves.

21. The method for introducing a curable liquid, in particular a capillary water barrier, into an absorbent solid (2), preferably in masonry, in concrete or in wood, using a device according to one of claims 1 to 20, characterized by the following Process steps:

Drilling a hole (5) in the solid body (2);

Inserting a swelling body (6) into the bore (5) in the solid body (2);

Establishing a flow connection or capillary line between the swelling body (6) and a storage container (3) containing the liquid (1);

Introducing the liquid (1) from the storage container (3) via an outlet device (4) and the swelling body (6) into the solid body (2);

Swelling of the swelling body (6) due to the sucked-in liquid (1) and pressing of the swelling body (6) onto the inner wall of the bore (10); capillary liquid line through or in capillary gaps and pores of the solid (2).

22. The method according to Anεpruch 21, characterized in that after the introduction of the bore (5) in the solid (2) and before the introduction of the liquid (1), the bore (5) is cleaned by means of compressed air and / or water.

23. The method according to claim 21 or 22, characterized gekennzeich¬ net that the swelling body (6) before the introduction of the liquid (1) is mechanically "swollen" by means of an elongated tool, preferably by driving in a mandrel or the like.

24. The method according to any one of claims 21 to 23, characterized ge indicates that the establishment of a flow connection between the swell body (6) and the storage container (3), the insertion of a serving as container (3) or a surface outlet tube (8) plugged or screwed onto the bottle neck (7) into the bore (5) and the contact of the free end of the bottle neck (7) or the outlet tube (8) with the swelling body (6) includes.