DE102010036633A1 - Arrangement for humidification of concrete structure i.e. road, embedded into ground, has yield device arranged between wall and concrete surface in interspace part and yielding water mists that are directed parallel to concrete surface - Google Patents

Abstract

The arrangement has a mist yield device (4) arranged between a wall (2) and a concrete surface (1) in an interspace part (3). The yield device yields water mists (5) that are directed parallel to the concrete surface. A moisture sensor (6) and a temperature sensor (7) are arranged in the interspace part for controlling the yield device. A control unit (8) detects values of the sensors and actuates the yield device. Operation-relevant data is detected and stored by the control unit. Fluid or air to be atomized is maintained at moderate temperature by the yield device.

Description

The invention relates to an arrangement in the mist nozzles water aerosol particles deploy, which acts on concrete surfaces of a concrete structure to ensure a uniform setting of the concrete and to prevent cracking.

In the case of concrete structures, there is a requirement that the surfaces have a certain minimum moisture content in order to prevent them from drying out and to enable a uniform setting of the concrete. Known arrangements for moistening the concrete are that mostly the concrete surfaces are sprayed with water, especially at low humidity and / or high air temperatures. In this case, in particular on all non-horizontal surfaces neither a uniform application of water is possible, nor can the surface moisture be kept permanently stable. In particular, with load-bearing components such as tunnels, bridges and buildings but a uniform setting is important for the stability, tightness and thus safety and lasting resistance of the structures.

From the DE 3037897 A1 For example, a method and apparatus for hot-humidifying concrete is known in which steam is applied to concrete.

The font DE 202005020923 U1 describes a concrete curing cover that should maintain a uniform humidity of 100%.

The invention has for its object to provide an arrangement that allows a stable and evenly distributed humidity over a desired time acts on the concrete surfaces of the concrete structure.

The object is achieved in that the concrete structure or the sub-surfaces are enveloped by a wall and arranged in the space between the concrete surface and the wall Nebelausbringvorrichtungen that deploy aerosol. These mist or Aerosolausbringvorrichtungen can fog generators such. B. fine mist nozzles or outlets of a mist generator such. As an evaporator, a Ultraschallverneblers or Hochdruckdrucküüheinrichtung be. It can be arranged according to size and surface arrangement of the building one or more mist or Aerosolausbringvorrichtungen accordingly. On the one hand, the wall completely or partially enclosing the concrete structure reduces evaporation and encloses a controllable and conditionable space. By Nebelausbringvorrichtungen a finely detailed and thus evenly distributing water mist is introduced into the space of concrete surface and possibly a wrapper. As sheathing other concrete surfaces, foils, tarpaulins recessed formwork and all other, possibly also existing surfaces or enclosures can be used, which are suitable to limit the spread of the aerosol particles.

According to the embodiment of claim 2, the Nebelausbringvorrichtungen two-fluid nozzles. With these nozzles, a water mist or water aerosol can be applied with a small droplet size, which distributes well, with the fog output is directed approximately parallel to the concrete surface. Thus, a predeterminable humidity in the space can be realized. Excessive amounts of water are avoided as much as possible. The fine mist nozzles and the discharge direction prevent leaching in the concrete. Otherwise necessary rework is omitted.

The nozzles can be used for various airflows through interchangeable orifices and metering valves for various fog levels.

In a further development according to claim 3, superheated steam, ultrasound or high-pressure nebulization are included as alternative aerosol or mist sources. As advantageous for the distribution, a droplet size of 1 to 300 μm applied by the mist generator is taken into consideration.

According to the embodiment according to claim 4 moisture sensors are arranged in the space for controlling the Nebelausbringvorrichtungen. The humidity sensors allow a control of the moisture in the space or on the concrete surface.

With the development according to claim 5 temperature sensors are arranged in the intermediate space. The temperature sensors can detect the temperature in addition to the humidity. Thus, the mist supply can be changed depending on the humidity as well as the determined temperature in the space.

According to the embodiment of claim 6, the throughput and thus the fog emission of the respective Nebelausbringvorrichtungen is separately variable. Thus, for example, the individual nozzles can be adjusted according to different humidity requirements. This can be done in particular by recording the measured values and separate control of the nozzles. This usually results in an interval-wise spreading of the mist. By exchangeable orifices and valve adjustment, the nozzles are individually to the required fog power customizable. Likewise, can be varied by different number of mist nozzles, the fog power.

With a development according to claim 7 the Nebelausbringvorrichtungen individual sensors for moisture and temperature are assigned. Thus, the fog parameters of individual Nebelausbringvorrichtungen can be varied according to different requirements or measurements.

In the development according to claim 8, the arrangement includes a control unit which detects the values of the sensors and controls the respective Nebelausbringvorrichtungen. For an automatic monitoring of moisture and a corresponding Nebelausbringung be realized. Ultimately, stable moisture conditions on the surface of the concrete structures can be guaranteed over time and space. The control of Nebelausbringvorrichtungen can be done individually or in groups.

According to the embodiment according to claim 9 operationally relevant data can be detected and stored by the control unit. Thus, on the one hand, the moisture profile during setting of the concrete can be documented. On the other hand, varying moisture prescriptions may be deposited during the course of the setting process, thus controlling the mist output of the mist dispensers accordingly. At the same time, the control unit can take over a monitoring function and, in the event of failure of water or air supply or other malfunctions, display error messages or, for example, forward them via radio. This can be avoided by high reliability disturbances in the setting process and thus reduced concrete qualities.

With the development of the invention according to claim 10, the liquid to be atomized can be tempered by appropriate devices. By heating or cooling, the temperature in the space or on the concrete surface can be influenced within certain limits. The tempering includes that the corresponding lines for water or air are performed thermally insulated. Likewise, the frost protection can be realized. Likewise, by laying the lines in the intermediate space, the hardening heat of the concrete can be used to control the temperature of the water. The heating of the water can be controlled for example by the temperature sensors in the intermediate space and detection of the outside temperature.

Several embodiments of the invention are illustrated in the drawings and will be described in more detail below. Show it:

1 a schematic diagram of the arrangement for humidifying concrete structures,

2 a humidification in tunneling in cross section and

2 a humidification in tunnel construction in longitudinal section.

In the following, preferred embodiments of the arrangement for concrete surfaces are described in more detail:

1 shows a schematic diagram of the arrangement for humidifying concrete structures. Shown is one in the ground 9 embedded concrete structure 1 , such as B. a street. The upper side is with a wall 2 so covered that a gap 3 between wall 2 and concrete surface 1 remains. In this space 3 is a fog applicator 4 , here z. B. arranged a two-fluid nozzle, the water mist or water aerosol particles 5 in the gap 3 comprises applying. With the mist supply 5 can reduce the humidity in the space 3 and thus on the surface of the concrete 1 increase. The two-fluid nozzle 4 is through a compressed air line 10 from a compressed air generator 12 such as B. from a compressor and a water pipe 11 from a water supply 13 , such as B. supplied from a tank or a water pipe. It is of course important to ensure that the composition of the water and the cleanliness of the air ensure trouble-free operation. Possibly. the requirements are to be ensured by appropriate filters etc. Of course, blockage-free nozzle technology must be used to ensure trouble-free operation. It can correspondingly appropriate measuring and metering in the compressed air line 10 and in the water pipe 11 to be ordered.

The envelope wall 2 may be a tent-like structure, with the gap 3 by blowing in air, z. B. by nebulization, or a linkage can be realized.

The control of the mist spreading device 4 takes place in an advantageous manner by a control unit 8th , The control unit 8th For example, it switches the compressor 12 to and / or opens possibly arranged valves, etc. In the intermediate space 3 are at least one moisture sensor 6 and / or a temperature sensor 7 arranged, which detect the humidity or temperature and according to an actual value setpoint adjustment according to the compressed air or the compressor 12 switch on, so that fog 5 in the gap 3 is applied. The programming of the control unit 8th This can be done so that the setpoint values vary over the course of the setting process or depending on other parameters. Furthermore, a switching option to manual operation in the control unit 8th be provided.

In a representation, not shown, for. As well as bridge pier or sections thereof wrapped by a wall and be ensured by fog application stable moisture conditions on the concrete surface. Likewise, entire concrete structures can be shrouded by appropriate walls.

In 2 a preferred use of the invention in tunneling is shown in cross-section. On the rock 9 becomes a concrete surface 1 applied. The gap 3 is here by the of the concrete surface 1 Retracted formwork as Hüllwandung 2 educated. Alternatively, a foil tunnel can also be used on the wall 2 form. In the space 3 are fog applicators 4 arranged the mist (not shown) in the space 3 distribute and thus the concrete 1 keep it moist. By way of example, here are three Nebelausbringvorrichtungen 4 , such as As fog nozzles, shown. The discharge direction of the nozzles 4 takes place approximately parallel to the concrete surface 1 , This will wash out the concrete 1 and corresponding rework avoided. For controlling with a control unit (not shown) are also moisture sensors 6 and / or temperature sensors 7 in the space 3 arranged. These sensors 6 . 7 capture the conditions near the surface of the setting concrete 1 ,

Usually, the concrete is 1 kept moist for three days after stripping. For example, the humidity on the first day may be 90% on the second day and 50% on the third day. Duration and humidity can be adjusted according to the regulations or requirements.

Because the tunnel in the feed, as in 3 (Longitudinal section) shown with a concreting machine 14 is concreted, for the Abbindetage three vorgbare gaps 3a . 3b . 3c realized. Every gap 3a . 3b . 3c is each by a wall 2 separated. In every space 3a . 3b . 3c here is ever a Nebelausbringvorrichtung 4 and sensors 6 . 7 shown. Thus, for every space 3 different moisture conditions can be realized by the arrangement. This can be the number of nozzles 4 in the interstices 3a . 3b . 3c vary according to the required fog power. The arrangement can also be realized by a sensor 6 . 7 or sensor pair 6 and 7 several nozzles 4 be controlled. The compressed air generation, water supply and the regulating control unit (not shown) can also be done centrally.

The device can be performed frost-resistant accordingly by heating and / or additives. By connecting the compressed air line to the water line (not shown), this can be blown out and thus u. a. be made frostproof.

In the fog application 4 If necessary, make sure that as little as possible water from the gap 3 exit and penetrate into other areas. This water damage, for example, by swelling certain rocks and / or frost damage is avoided. Possibly. can be arranged in sensitive Breichen collecting container for water etc.

LIST OF REFERENCE NUMBERS

1

Concrete structure, concrete surface, concrete

2

Wall, cladding, cladding wall

3

gap

3a

gap

3b

gap

3c

gap

4

Mist applicator, aerosol dispenser, nozzle

5

Mist, Mist Supply, Water Mist, Water Aerosol, Aerosol Particles

6

humidity sensor

7

temperature sensor

8th

control unit

9

Soil, soil, rocks

10

Compressed air line

11

water pipe

12

Compressed air generator, compressed air supply, compressor

13

Water supply, water supply, water treatment

14

Concrete paving

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 3037897 A1 [0003]
• DE 202005020923 U1 [0004]

Claims (10)

Arrangement for moistening concrete structures, characterized in that the concrete structure ( 1 ) from a wall ( 2 ) and in the space ( 3 ) between concrete surface ( 1 ) and wall ( 2 ) Fog applicators ( 4 ), the water mist ( 5 ). Arrangement for humidifying concrete structures according to claim 1, characterized in that the Nebelausbringvorrichtungen ( 4 ) Two-fluid nozzles are where the fog output ( 5 ) parallel to the concrete surface ( 1 ). Arrangement for humidifying concrete structures according to claim 1, characterized in that the mist ( 5 ) is produced as superheated steam, by ultrasound generation or high pressure and the droplet size of the mist is 1 to 300 μm. Arrangement for moistening concrete structures according to any one of the preceding claims, characterized in that for controlling the Nebelausbringvorrichtungen ( 4 ) Humidity sensors ( 6 ) in the space ( 3 ) are arranged. Arrangement for moistening concrete structures according to any one of the preceding claims, characterized in that for controlling the Nebelausbringvorrichtungen ( 4 ) in the intermediate space temperature sensors ( 7 ) are arranged. Arrangement for humidifying concrete structures according to one of the preceding claims, characterized in that the throughput of the respective Nebelausbringvorrichtungen ( 4 ) is separately adjustable. Arrangement for moistening concrete structures according to any one of the preceding claims, characterized in that the Nebelausbringvorrichtungen ( 4 ) individual sensors ( 6 . 7 ) assigned. Arrangement for humidifying concrete structures according to one of the preceding claims, characterized in that a control unit ( 8th ) the values of the sensors ( 6 . 7 ) and the Nebelausbringvorrichtungen ( 4 ). Arrangement for humidifying concrete structures according to one of the preceding claims, characterized in that by the control unit ( 8th ) relevant data can be recorded and stored. Arrangement for moistening concrete structures according to one of the preceding claims, characterized in that the liquid to be atomized or the air is tempered by appropriate devices.

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