JP2016102393A - System and method for sprinkling water on concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for sprinkling water on concrete, which enables initial curing of the concrete to be performed by an inexpensive facility and without extending a worker's working hours.SOLUTION: A system 1 for sprinkling water on concrete includes: a water tank 5; a sprinkling hose 7 that is installed on the concrete 3 laid on a base course of a road 2 so as to pave the road 2; and a water supply part 9 that supplies water in the water tank 5 to the sprinkling hose 7.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sprinkling device for concrete and a method for sprinkling concrete, and more particularly to one used for initial curing of concrete laid on a road.

  Conventionally, when initial curing of concrete laid on a roadbed is carried out, water is sprayed on the concrete while an operator drives and moves the water truck.

  For example, Patent Document 1 can be cited as a document related to the prior art.

Japanese Patent Laid-Open No. 11-158810

  By the way, in the conventional watering, a dedicated vehicle is required, and the worker must be attached throughout the watering work, which requires expensive equipment and increases the work time of the worker. There is.

  The present invention has been made in view of the above-mentioned problems, and is a sprinkler for concrete and a concrete sprayer capable of initial curing of concrete with inexpensive equipment and without increasing the work time of the worker. The purpose is to provide a watering method.

  The invention according to claim 1 is a water tank, an irrigation hose installed on concrete laid on the roadbed for road paving, and water in the water tank supplied to the irrigation hose A water sprinkling device for concrete having a water supply section.

  The invention according to claim 2 is the water sprinkling device for concrete according to claim 1, wherein the irrigation hose is installed extending in the extending direction of the road.

  Invention of Claim 3 is a sprinkling apparatus to concrete which has the compressed air supply part which supplies compressed air to the said irrigation hose in the sprinkling apparatus to concrete of Claim 1 or Claim 2.

  According to a fourth aspect of the present invention, in the water sprinkling device for concrete according to the third aspect, the irrigation hose is provided with a plurality of through holes, and these through holes are located above the irrigation hose. It is a sprinkler for the concrete that is located.

  According to a fifth aspect of the present invention, in the sprinkling device for concrete according to the third or fourth aspect, the irrigation hose swells in a cylindrical shape by the pressure of the compressed air supplied from the compressed air supply unit. It is a sprinkler for concrete that is configured as follows.

  The invention according to claim 6 is characterized in that an irrigation hose is installed on the concrete laid on the roadbed for road paving, and water is discharged from the installed irrigation hose. It is a method of watering the concrete that wets.

  The invention according to claim 7 is the watering method for concrete according to claim 6, wherein the water is forcedly sprinkled using compressed air when water is discharged from the irrigation hose.

  The invention according to claim 8 is the watering method for concrete according to claim 7, wherein after the irrigation hose is installed and before water is discharged from the irrigation hose, the irrigation hose is controlled by the pressure of compressed air. Is a method of sprinkling water into the concrete to prepare the irrigation hose that is bent.

  According to the present invention, there is an effect that the initial curing of concrete can be performed with an inexpensive facility and without increasing the working time of the worker.

It is a figure showing a schematic structure of a sprinkling device to concrete concerning an embodiment of the present invention. It is a figure which shows schematic structure of the sprinkling apparatus to the concrete which concerns on a modification. FIG. 3 is a view taken in the direction of arrow II in FIG.

  As shown in FIG. 1, the water sprinkling device 1 for concrete according to the embodiment of the present invention is used for the initial curing of the concrete 3 laid (placed) on the pavement of the road 2. A tank 5, an irrigation hose 7, and a water supply unit 9 are provided.

  The concrete 3 that has been struck needs to exhibit sufficient strength by a hydration reaction, ensure the required durability, water tightness, steel material protection performance, and the like, and prevent harmful cracks from occurring.

  For this reason, for example, curing (initial curing) by watering is required as an operation for maintaining a certain period of time after the driving at a humidity necessary for hardening the concrete 3 and not being affected by harmful effects.

  The water tank 5 is installed, for example, at a predetermined position on the side of the road 2, and water (normal temperature water) transported by a water truck is stored in the water tank 5. ing.

  The irrigation hose 7 is installed on the concrete 3 laid on the roadbed of the road 2 for paving the road 2. In addition, as the irrigation hose 7, the agricultural commercial item is cut | disconnected by predetermined length, for example, and is used suitably.

  The water supply unit 9 boosts the water in the water tank 5 and supplies it to the irrigation hose 7, and includes a pump 11, a filter 13, a relief valve 15, a check valve 17, a pressure gauge 19, and two manual open / close valves. 21 and 23 and the piping member 25 which connects these are comprised.

  More specifically, the water in the water tank 5 flows through the piping member 25, the filter 13, and the piping member 25 to the pump 11 and is boosted to a predetermined pressure by the pump 11. The water pressurized by the pump 11 and discharged from the pump 11 is supplied into the irrigation hose 7 through the piping member 25, the manual opening / closing valve (open manual opening / closing valve) 23, and the piping member 25. Yes.

  The water supplied to the irrigation hose 7 is discharged from the irrigation hose 7 (released from the inside of the irrigation hose 7 to the outside of the irrigation hose 7 through a number of holes provided in the irrigation hose 7). For the initial curing, it is spread almost evenly on the concrete 3. In addition, illustration of many holes of the irrigation hose 7 is abbreviate | omitted.

  The piping member 25 between the pump 11 and the manual opening / closing valve 23 is branched. The branched pipe member 25, the manual open / close valve (open manual open / close valve) 21, the pipe member 25, the relief valve 15, the pipe member 25, the check valve 17, and the pipe member 25 pass through the water. A part is returned to the water tank 5.

  By providing the relief valve 15, the water pressure in the irrigation hose 7 does not become larger than a predetermined value (for example, 0.1 MPa), and the irrigation hose 7 is prevented from being damaged. It has become.

  A pressure gauge 19 is provided in the piping member 25 between the pump 11, the manual opening / closing valve 21, and the manual opening / closing valve 23, so that the water discharge pressure of the pump 11 can be detected.

  The irrigation hose 7 extends in the extending direction of the road 2 and is installed, for example, in a direction having a higher transverse gradient in the width direction of the road 2. The length of the irrigation hose 7 is, for example, about 100 m to 150 m. In addition, the distal end portion of the tubular irrigation hose 7 is closed by providing a tube stopper (not shown) at the distal end portion (right end portion in FIG. 1) of the irrigation hose 7.

  The irrigation hose 7 once installed was installed on the concrete 3 without changing this installation form (form extending linearly in the extending direction of the road 2) and without changing the position with respect to the road 2. Water is sprayed almost uniformly on the concrete 3 in the form and position.

  In other words, for example, by installing one irrigation hose 7 once on the road 2, water can be sprayed for the initial curing of the concrete 3 over the length of the road 2 of 100 m to 150 m. .

  When the width of the road 2 is wide and one irrigation hose 7 cannot supply water evenly to the concrete 3, a plurality of irrigation hoses 7 are provided at predetermined intervals in the width direction of the road 2. In addition, it may be installed extending in the extending direction of the road 2.

  Further, a timer may be provided in the concrete sprinkler 1 to control the operation time of the water supply unit 9 (pump 11). That is, the pump 11 may be stopped when the predetermined time has elapsed from the time when the supply of the water of the concrete 3 by the irrigation hose 7 is started, and the watering to the concrete 3 by the irrigation hose 7 may be stopped.

  Moreover, you may make it spray water intermittently with a timer. For example, the cycle of watering for 20 minutes, stopping watering for the next 40 minutes, and then watering again may be repeated.

  The amount of water entering the water tank 5 is larger than the amount of water sprinkled by the concrete sprinkler 1 overnight (for example, 17:00 on the same day to 8:00 on the next day).

  Next, operation | movement of the water sprinkling apparatus 1 to concrete is demonstrated.

  An irrigation hose 7 is installed on the concrete 3 (concrete cured to such an extent that the surface can be worked without roughening the surface) 3 laid on the road bed of the road 2 by the pavement of the road 2. At this time, it is assumed that the water tank 5 contains sufficient water.

  Subsequently, for the initial curing of the concrete 3 from the installed irrigation hose 7, the concrete 3 is kept wet by discharging water for a predetermined time.

  In the initial curing of the concrete 3, a curing mat 27 that retains moisture is also used.

  That is, after the concrete 3 is driven, the upper surface of the uncured concrete 3 is covered with a water-absorbing curing mat 27, and then the irrigation hose 7 is installed on the curing mat 27. In addition, the irrigation hose 7 is installed by an operator separately moving on the work table along the longitudinal direction of the road 2 so as not to damage the placement surface of the uncured concrete 3.

  By installing the curing mat 27, water can be uniformly supplied to the upper surface of the concrete 3, and after the concrete 3 is driven in, it prevents moisture from being emitted from the concrete 3 by direct sunlight, wind, etc. until it begins to harden. be able to.

  According to the concrete sprinkler 1, the water tank 5, the irrigation hose 7 installed on the concrete 3 laid on the roadbed of the road 2, and the water that supplies the water in the water tank 5 to the irrigation hose 7. Since it is provided with the supply unit 9, expensive equipment such as a dedicated vehicle is not required.

  In addition, once the irrigation hose 7 is installed on the concrete 3 laid on the roadbed of the road 2, the operator's work becomes unnecessary thereafter, so that the work time of the operator is not lengthened. 3 initial curing can be done.

  Moreover, according to the concrete watering apparatus 1, since the water supply unit 9 is provided with a timer, the watering can be stopped after a predetermined time has elapsed since the start of watering, and even if there is no worker, Can be wasted.

  Moreover, according to the water sprinkling apparatus 1 for concrete, since the irrigation hose 7 is installed extending in the extending direction of the road 2, water can be sprayed onto the road 2 at a time over a long distance. Can be further reduced.

  Next, a concrete sprinkler 1a according to a modification will be described with reference to FIGS. The sprinkler 1a for concrete according to the modification is different from the sprinkler 1 for concrete described above in that the compressed air supply unit 31 is provided, and the other points are almost the same as the sprinkler 1 for concrete. It is configured.

  That is, as shown in FIG. 2, the water sprinkler 1a for concrete is provided with a compressed air supply unit 31 in addition to the water tank 5, the water supply unit 9, the irrigation hose 7, and the like. The compressed air supply unit 31 supplies compressed air to the irrigation hose 7.

  In the meat part of the irrigation hose 7, a plurality of (many) through holes (not shown) are provided substantially uniformly distributed over the entire length of the irrigation hose 7.

  Many through-holes are in a state where the water supplied from the water supply unit 9 into the irrigation hose 7 and the compressed air supplied from the compressed air supply unit 31 into the irrigation hose 7 are mixed or for a short time. It is provided to discharge (release) the irrigation hose 7 from the inside to the outside by alternating at intervals.

  Many through-holes are located only above the irrigation hose 7 (for example, obliquely above) in a state where the irrigation hose 7 is installed on the road 2. Thus, as shown in FIG. 3, the water discharged from the irrigation hose 7 is discharged obliquely upward from the irrigation hose 7 as shown by the broken line in FIG. It comes to fall. In the above-described concrete sprinkler 1 as well, water discharged obliquely upward from the irrigation hose 7 is dispersed and dropped on the road 2 by gravity.

  Although the irrigation hose 7 is provided with the plurality of through holes (not shown) described above, the compressed air supply unit 31 can be used even if the water supply unit 9 does not supply water. It is configured to swell in a cylindrical shape (for example, a cylindrical shape) only by the pressure of the compressed air supplied from the inside to the inside of the irrigation hose 7.

  The concrete watering device 1a will be further described. In FIG. 2, the water tank 5 and the water supply unit 9 are simplified.

  The compressed air supply unit 31 includes a compressed air supply source (compressor) 33 and a regulator 35. The compressed air coming out of the compressed air supply source 33 is depressurized to a predetermined pressure by the regulator 35.

  The compressed air decompressed to a predetermined pressure by the regulator 35 is supplied to the irrigation hose 7 through the manual opening / closing valve 37 and the check valve 39.

  More specifically, a cheese (tea) 41 is connected to the tip of the piping member 25 extending from the water supply unit 9. The tip of the piping member 25 is connected to one opening of the cheese 41. Moreover, the irrigation hose 7 is connected to the opening part of the cheese 41 (opening part facing the opening part to which the piping member 25 is connected) through the hose joint 43.

  The remaining opening of the cheese 41 is connected to the check valve 39 via the piping member 45. The check valve 39 blocks the flow of air and water in the reverse direction (the direction from the cheese 41 toward the manual opening / closing valve 37).

  The pressure of compressed air (for example, 0.1 MPa in gauge pressure) supplied from the compressed air supply unit 31 (pipe member 45) into the irrigation hose 7 and the water supply unit 9 (pipe member 25) into the irrigation hose 7 The pressure of the supplied water (for example, 0.1 MPa in gauge pressure) is equal to each other.

  When water is sprayed onto the concrete of the road 2, the supply of water from the water supply unit 9 and the supply of compressed air from the compressed air supply unit 31 are performed simultaneously.

  In addition, although it is the irrigation hose 7 installed in the road 2, before compressed air and water are supplied inside, since the interior space is crushed and the interior space is almost nonexistent, the appearance is predetermined. It is a thin, thin plate with a width. The irrigation hose 7 whose appearance is a thin and long thin plate having a predetermined width can be accommodated without being bulky, for example, by being wound around the outer periphery of a cylindrical core material. Further, a manual opening / closing valve 47 is provided in the middle of the piping member 25 (a part near the cheese 41).

  Next, operation | movement of the water sprinkling apparatus 1a to concrete is demonstrated.

  An irrigation hose 7 is installed along the longitudinal direction of the road 2 on the uncured concrete 3 laid on the roadbed of the road 2 for paving the road 2 in the same manner as the water sprinkler 1 for the concrete. . Before this, the curing mat 27 may be installed before the irrigation hose 7 is installed, as in the case of the water sprinkler 1 for concrete. At this time, sufficient water is contained in the water tank 5, the appearance of the irrigation hose 7 is a thin and long thin plate with a predetermined width, and the manual opening / closing valve 47 is closed.

  Subsequently, compressed air is supplied from the compressed air supply unit 31 into the irrigation hose 7, and the irrigation hose 7 is inflated into a cylindrical shape and extends along the longitudinal direction of the road 2.

  Subsequently, while supplying compressed air from the compressed air supply unit 31 or after stopping the supply of compressed air, the supply of compressed air is started again, the manual opening / closing valve 47 is opened, and the irrigation hose is supplied from the water supply unit 9 7 and 7 are supplied with water and compressed air. And in order to carry out the initial curing of the concrete 3 from the installed irrigation hose 7, the concrete 3 is kept wet by releasing water for a predetermined time.

  Further, water out of the water and air discharged upward from the irrigation hose 7 falls by gravity and is distributed on the road 2 (see FIG. 3).

  According to the concrete sprinkling apparatus 1a, the compressed air supply unit 31 has a compressed air supply unit 31. When the water is discharged from the irrigation hose 7, the compressed water is forcibly sprinkled (compressed air in a mixture of water and compressed air). The water in the mixture of water and compressed air is discharged from the irrigation hose 7 and sprinkled by the water 2) in a suitable manner. Can be spread on (concrete 3).

  For example, when water and air are mixed in the irrigation hose 7 (by generating a large number of bubbles in the irrigation hose 7), a mixture of water and air is continuously discharged from the irrigation hose 7 and irrigation. The maximum value of the momentum of the water discharged from the hose 7 is increased, and the water reaches farther. Further, for example, when water is mixed with air in the irrigation hose 7, the form of the water discharged from the irrigation hose 7 constantly changes at short time intervals, so that the water can be distributed more uniformly on the road 2. .

  Moreover, according to the concrete sprinkling apparatus 1a, since the plurality of through holes of the irrigation hose 7 are located above the irrigation hose 7, the bubbles that are supplied into the irrigation hose 7 and are present above the irrigation hose 7 are generated. It becomes easy to be discharged to the outside of the irrigation hose 7 together with water. Thereby, the water discharged | emitted from the irrigation hose 7 can be drowned on the road 2 in a more suitable aspect.

  Moreover, according to the concrete sprinkling apparatus 1a, the irrigation hose 7 is installed on the road 2 (a state where the wound irrigation hose 7 is elongated in the longitudinal direction of the road 2 and is in the shape of an elongated plate. Before the water is discharged from the irrigation hose 7, the irrigation hose 7 is inflated by the pressure of the compressed air, so that the position of the lightweight irrigation hose 7 with respect to the road 2 before the water enters, It can be easily corrected.

  In the above description, one compressed air supply unit 31 and one irrigation hose 7 are provided in one water supply unit 9, but one water supply unit is provided by appropriately branching the piping member 25 or the like. A plurality of irrigation hoses 7 may be provided at 9. In this case, for each irrigation hose 7, a regulator 35, a manual open / close valve 37, a check valve 39, a cheese 41, and a hose joint 43 are provided. A plurality of irrigation hoses 7 may be provided in one compressed air supply unit 31 by appropriately branching.

  In addition, you may grasp | ascertain the above-mentioned thing as invention of the watering method to concrete.

  That is, a method of watering concrete that wets the concrete by installing a watering hose on the concrete laid on the roadbed for road paving and discharging water from the watering hose installed You may grasp as.

  In this method, when water is discharged from the irrigation hose, forced watering may be performed using compressed air by discharging a mixture of compressed air and water.

  In addition, after the irrigation hose is installed, before the water is discharged from the irrigation hose, the irrigation hose is inflated into a cylinder by the pressure of the compressed air (by supplying only the compressed air into the irrigation hose). The shape of the bent irrigation hose may be adjusted and extended along the longitudinal direction of the road 2.

DESCRIPTION OF SYMBOLS 1, 1a Sprinkling device to concrete 2 Road 3 Concrete 5 Water tank 7 Irrigation hose 9 Water supply part 31 Compressed air supply part

Claims (8)

A water tank,
An irrigation hose installed on concrete laid on the roadbed for road paving,
A water supply unit for supplying water in the water tank to the irrigation hose;
A watering device for concrete, comprising: In the sprinkling apparatus to the concrete of Claim 1,
The irrigation hose is installed so as to extend in the extending direction of the road. In the sprinkling apparatus to concrete of Claim 1 or Claim 2,
A sprinkling apparatus for concrete, comprising a compressed air supply unit for supplying compressed air to the irrigation hose. In the sprinkling apparatus to the concrete of Claim 3,
The irrigation hose is provided with a plurality of through holes, and these through holes are located above the irrigation hose. In the sprinkling apparatus to concrete of Claim 3 or Claim 4,
The watering device for concrete is characterized in that the irrigation hose is configured to swell in a cylindrical shape by the pressure of the compressed air supplied from the compressed air supply unit.   To a concrete characterized in that an irrigation hose is installed on the concrete laid on the roadbed for road paving, and the concrete is wetted by discharging water from the installed irrigation hose. Watering method. In the watering method to the concrete of Claim 6,
A method of watering concrete, wherein forced watering is performed using compressed air when water is discharged from the irrigation hose. In the watering method to the concrete of Claim 7,
After installing the irrigation hose, before discharging water from the irrigation hose, the irrigation hose is inflated into a cylindrical shape by the pressure of compressed air, and the bent irrigation hose is arranged. Watering method.

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