JP2014043699A - Moisture-retaining block pavement structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a moisture-retaining block pavement structure in which a surface of pavement can be retained in a moisture-retaining state at all the time by continuously supplying water, for a long time, to the surface of the pavement comprised of water-pumping or moisture-retaining blocks even without using an expensive and special water transfer sheet, and a repair work of a water supply path can be performed simply and easily.SOLUTION: A moisture-retaining block pavement structure 10 formed from water-pumping or moisture-retaining blocks 12 functioned to retain a surface of pavement 11 in a moisture-retaining state comprises: a number of water-pumping or moisture-retaining blocks 12 laid side by side and installed longitudinally and laterally while interposing an intermediate laying layer 15 on a base layer 14; a water supply duct 16 disposed in intermediate portions of joint parts of the blocks in a thickness direction and extends along the joint parts 13; and a joint material 17 for filling the joint parts while covering the water supply duct 16. The intermediate laying layer 15 is formed from a water cut sheet 18 which is laid while covering a surface of the base layer 14, and a sand layer 19 which is laid and leveled at an upper side of the water cut sheet 18.

Description

  The present invention relates to a moisturizing block pavement structure, and more particularly to a moisturizing block pavement structure having a function of holding the surface of the pavement in a moisturized state.

  As a countermeasure against the heat island phenomenon in recent years, the so-called water hitting effect that uses the latent heat of vaporization caused by water evaporating from the wet pavement surface while keeping the water-absorbing and water-permeable surface of the pavement wet. Thus, various wettable (moisturizing) pavements have been developed that can suppress the temperature rise of the pavement surface.

  On the other hand, as a method of supplying water to wet pavement, for example, water is sprayed from above on the surface of the pavement, irrigation pipes piped in holes formed inside the pavement, or irrigation pipes arranged side by side on the lower surface of the pavement. However, these methods may cause problems such as water splashing, cracking of the pavement, and uneven water supply.

  On the other hand, while covering the base layer below the pavement having water absorption and water permeability, laying the water guide sheet, and immersing the end of the water guide sheet inside the water supply pipe, or water supply piped in the pipe groove By wrapping a water guide sheet around the conduit, the water supplied from the water supply pipe or the water supply conduit is permeated and diffused widely along the water guide sheet, and the water that has been diffused and spread is spread above the water guide sheet. Wet pavement that allows the surface of the pavement to be kept wet by pumping up to the surface of the pavement while passing through the sand layer and the water-absorbing and water-permeable pavement formed on the sand layer Systems have been developed (see, for example, Patent Document 1 and Patent Document 2).

JP 2001-81709 A JP 2005-351026 A

  In the wet pavement system described in Patent Document 1 and Patent Document 2, water is continuously supplied to the surface of the pavement without causing water splashing, cracking of the pavement, or large unevenness. Although it is possible to always maintain a wet state, it is necessary to use an expensive and special water guide sheet, and the end treatment of the water guide sheet becomes complicated, which increases the construction cost. In addition, water supplied from the water guide sheet rises from the lower surface of the pavement by capillarity and reaches the surface of the pavement. Therefore, the pavement is a block pavement in which a large number of pumping blocks are arranged vertically and horizontally. In this case, for example, if an inexpensive pumping or water retaining concrete block is used, efflorescence will occur due to the reaction between the water passing through the block pavement and the concrete. It tends to decline. For this reason, it becomes necessary to use, for example, an expensive ceramic block as the water-lifting or water-retaining block, and the construction cost further increases.

  In addition, in the wet pavement system described in Patent Document 1 and Patent Document 2, in the unlikely event that a malfunction occurs due to clogging or breakage in the water supply path by the water guide sheet or the water supply conduit disposed below the pavement, In order to perform these repairs and replacements, it is necessary to remove or re-form the wet pavement and the sand layer, so that these repair operations become large and complicated, and the construction cost increases.

  The present invention provides a continuous and stable supply of water over a long period of time to the surface of a pavement with a water-lifting or water-retaining block without using an expensive and special water conveyance sheet or an expensive ceramic block. An object of the present invention is to provide a moisturizing block pavement structure that can keep the surface of the pavement constantly moisturized and can easily and easily repair the water supply path.

  The present invention is a moisturizing block pavement structure having a function of maintaining the surface of the pavement in a moisturized state, and is provided with a large number of pumping waters installed side by side with an intermediate laying layer on the base layer. A water retention block, a water supply conduit disposed along the joint in the thickness direction of the joint of the pumped water or water retention block, extending along the joint, and filling the joint covering the water supply conduit The above-mentioned object is achieved by providing a moisturizing block pavement structure that is formed to include the formed joint material.

  In the moisturizing block pavement structure according to the present invention, the intermediate laying layer is laid above a water shielding sheet or asphalt concrete layer laid so as to cover a surface of the base layer, and the water shielding sheet or asphalt concrete layer. It preferably consists of a leveled sand layer.

  In the moisturizing block pavement structure of the present invention, the intermediate laying layer is preferably composed of a mortar layer laid above the base layer.

  Furthermore, in the moisturizing block pavement structure of the present invention, it is preferable that the joint portion has a joint width of 8 to 30 mm.

  Furthermore, in the moisturizing block pavement structure of the present invention, it is preferable that a spacer member that holds the joint width of the joint portion is attached to the joint portion.

  Furthermore, in the moisturizing block pavement structure of the present invention, the water supply conduit is preferably a bleed tube.

  Furthermore, in the moisture-retaining block pavement structure of the present invention, the joint material is preferably a water-permeable joint material or a water-retaining joint material.

  According to the moisturizing block pavement structure of the present invention, water can be continued over a long period of time on the surface of the pavement with a water-lifting or water-retaining block without using an expensive and special water-conducting sheet or an expensive ceramic block. Therefore, the surface of the pavement can be always kept in a moisturized state, and the water supply path can be repaired easily and easily.

It is a schematic sectional drawing explaining the structure of the moisture retention block pavement structure which concerns on preferable 1st Embodiment of this invention. It is a schematic sectional drawing explaining the structure of the moisture retention block pavement structure based on preferable 2nd Embodiment of this invention. It is a schematic sectional drawing explaining other structures of the moisture retention block pavement structure which concerns on preferable 1st Embodiment of this invention. It is a schematic sectional drawing explaining the other structure of the moisture retention block pavement structure based on preferable 2nd Embodiment of this invention.

  A moisturizing (wettable) block pavement structure 10 according to the first preferred embodiment of the present invention shown in FIG. 1 forms a pavement such as a sidewalk, a promenade, a plaza, a playground, a parking lot, a pickup place, etc. By maintaining the surface of the pavement 11 by the water retention block 12 in a moisturized state (wet state) and continuously evaporating water from the surface of the pavement 11, the temperature of the pavement surface rises due to the water-damping effect using latent heat of vaporization. And a function of effectively suppressing, for example, the occurrence of a heat island phenomenon. Further, the moisturizing block pavement structure 10 of the first embodiment has a simple configuration, can be formed at a low cost, and can be easily and easily performed for repairing the water supply path. It has become.

  And the moisture retention block pavement structure 10 of this 1st Embodiment is a pavement structure by the water-lifting or water retention block 12 provided with the function to hold | maintain the surface of the pavement 11 in a moisture retention state, Comprising: A number of water-lifting or water-retaining blocks 12 that are laid side by side with the laying layer 15 interposed therebetween, and a joint portion 13 in the thickness direction of the joint 13 of the water-lifting or water-retaining blocks 12, A water supply conduit 16 extending along the portion 13 and a joint material 17 that covers the water supply conduit 16 and is filled in the joint portion 13 are formed.

  Further, in the first embodiment, the intermediate laying layer 15 is formed by spreading the water shielding sheet or asphalt concrete layer 18 covering the surface of the base layer 14 and the water shielding sheet or asphalt concrete layer 18 above the water shielding sheet or asphalt concrete layer 18. And a sand layer 19 formed.

  In the first embodiment, the base layer 14 is a crushed stone base layer formed of, for example, a crushed stone layer spread on a road bed and rolled. The base layer 14 may be, for example, a concrete layer constituting a floor slab such as a bridge.

  As the water shielding sheet 18 constituting the intermediate laying layer 15, various known sheet materials known as the water shielding sheet 18 made of, for example, a vinyl chloride sheet material or the like can be used. The water shielding sheet 18 is laid in a state in which the surface of the base layer 14 is continuously covered without a gap. Moreover, in this 1st Embodiment, it can replace with the water-impervious sheet | seat 18, and can also lay and use the asphalt concrete layer 18 which consists of dense-graded asphalt concrete, for example by the thickness of about 10-30 mm, for example. The water shielding sheet or asphalt concrete layer 18 is not necessarily laid, but is supplied from the water supply pipe 16 by covering the surface of the base layer 14 and laying the water shielding sheet or asphalt concrete layer 18. Water can be diffused over a wide range through the water-lifting or water-retaining block 12 without penetrating the crushed stone base layer 14.

  The sand layer 19 spread over the water-impervious sheet or the asphalt concrete layer 18 can be formed using various types of sand known as civil engineering materials such as mountain sand. The sand layer 19 is provided with a thickness of about 20 to 30 mm, for example. This makes it possible to easily adjust the height of the water-lifting or water-retaining block 12 and to diffuse the water supplied from the water supply conduit 16 more efficiently.

  In the present embodiment, as the water-lifting or water-retaining block 12, preferably a water-lifting or water-retaining concrete block that is inexpensive and easily available can be used. The water-absorbing or water-retaining concrete block has a function capable of spreading the absorbed water over a wide range mainly by a capillary phenomenon through a continuous passage formed by fine holes formed inside. As such a water-lifting or water-retaining concrete block, for example, “Eco-Lake Sou” (manufactured by Toyo Kogyo Co., Ltd.) can be used. It is preferable to use a water-absorbing or water-retaining concrete block in which an appropriate amount of white-water inhibitor or dredged sand is blended so as to effectively suppress the occurrence of efflorescence by reacting with water. In addition, as the water-lifting or water-retaining block 12, in addition to the water-lifting or water-retaining concrete block, a water-lifting ceramic block can also be used. Further, various other paving blocks having a water pumping function or a water holding function can be used.

  As the water-lifting or water-retaining block 12, for example, a square or rectangular planar shape having a size of about 100 to 600 mm in length and width and about 30 to 100 mm in thickness can be used. The water-lifting or water-retaining block 12 is a state in which the joint portion 13 having a predetermined joint width is held by a construction method similar to the conventional method in which a pavement block is laid and fixed with a sand layer interposed on the base layer 14. Thus, a large number of layers are arranged on the sand layer 19 in the vertical and horizontal directions.

  Here, the joint width of the joint part 13 held between the adjacent pumping blocks 12 is preferably 8 to 30 mm. If the joint width of the joint portion 13 is too narrow, it is difficult to dispose the water supply conduit 16, and if it is too wide, the water supplied from the water supply conduit 16 is difficult to spread into the pumped water or water retaining block 12. Since the joint width of the joint portion 13 is 8 to 30 mm, the water supply conduit 16 can be easily disposed, and the water supplied from the water supply conduit 16 can be efficiently spread to the water pumping or water retaining block 12. It becomes possible.

  The joint portion 13 held between the adjacent water-lifting or water-retaining blocks 12 is provided by projecting a joint keep from the side surface of the water-lifting or water-retaining block 12 with a predetermined protrusion height, By attaching and using a spacer member formed separately from the block 12, it can be easily formed while maintaining a predetermined joint width. These joint keeps and spacer members can also be used as a cradle for mounting the water supply conduit 16 at a predetermined height position along the joint part 13.

  In the first embodiment, among the joint portions 13 that are held between a number of water-lifting or water-retaining blocks 12 arranged side by side in the vertical and horizontal directions and formed in a grid shape, for example, parallel to the same direction. The water supply conduit 16 is attached to the joint portions 13 that are preferably extended every two to four rows, extending along the joint portions 13.

  The water supply conduit 16 is a water supply tube configured so that water supplied into the conduit 16 can be quantitatively discharged to the outside of the conduit 16 little by little over time. As the water supply conduit 16, for example, a drip pipe that allows water to be dripped quantitatively from the dripper into the pores, a bleed pipe that exudes water from the surface of the pipe by applying a slight water pressure to the inside of the pipe, and quantitative water supply is possible A perforated tube or the like can be used. In the first embodiment, the outflow amount (discharge amount) is constant or substantially constant at any position of the conduit 16, and is flexible to changes due to the temperature expansion of the pavement 11, the water pumping capacity or the water retention block 12. For example, a rubber bleed tube having flexibility, for example, can be used as the bleed pipe. As such a bleeding tube, a trade name “Water Tube” (manufactured by Daiwa Jitsugyo Co., Ltd.), a trade name “Ramscape Infusion Hose” (manufactured by Noyu Co., Ltd.), or the like can be used.

  The water supply conduit 16 is preferably arranged in the middle portion in the thickness direction of the joint portion 13 in each joint portion 13 of every two to four rows, preferably at the upper portion of the joint portion 13, and preferably the outer peripheral portion on both sides. It is attached in close contact with the side surface of the water-lifting or water-retaining block 12. As a result, the water that has oozed out from the water supply conduit 16 is smoothly soaked into the water pumping or water retaining block 12 from the side of the water pumping or water retaining block 12, mainly along the portion near the surface of the pavement 11. Accordingly, it is possible to efficiently permeate and diffuse in the interior of the pavement 11 over a wide range.

  The joint material 17 that covers the water supply conduit 16 disposed in the joint portion 13 and is filled in the joint portion 13 uses various known joint materials such as joint mortars that are used for block paving using a conventional paving block. be able to. The joint material 17 covers the water supply conduit 16 and fills the joint portion 13 to prevent the water supply conduit 16 from falling off the joint portion 13 and to protect the water supply conduit 16.

  In the first embodiment, as the joint material 17 that covers the water supply conduit 16, a water-permeable joint material or a water-retaining joint material such as a water-permeable joint mortar or a water-retaining joint mortar that preferably has water permeability and water retention is used. Yes. By using a water-permeable joint material or a water retaining joint material as the joint material 17 that covers the water supply conduit 16, it becomes possible to efficiently diffuse the water supplied from the water conduit 16. In the first embodiment, the other joint portion 13 to which the water supply conduit 16 is not attached is also filled with a permeable joint material or a water retaining joint material as the joint material 17.

  And according to the moisture retention block pavement structure 10 of this 1st Embodiment provided with the above-mentioned structure, it is the pavement by the pumping-up or water retention block 12 without using an expensive special water conveyance sheet or an expensive ceramic block. The surface of the pavement 11 can be continuously and stably supplied over a long period of time, and the surface of the pavement 11 can be kept in a constantly moisturized state. It becomes possible to carry out easily.

  That is, according to the first embodiment, the moisture-retaining block pavement structure 10 includes a large number of water-lifting or water-retaining blocks 12 arranged side by side on the base layer 14 with the intermediate laying layer 15 interposed therebetween. And a water supply conduit 16 disposed along the joint portion 13 in the thickness direction of the joint portion 13 of the water pumping or water retention block 12 and extending along the joint portion 13, and filling the joint portion 13 so as to cover the water supply conduit 16. The water supplied through the water supply conduit 16 penetrates into the pumped water or water retaining block 12 mainly from the side of the pumped water or water retaining block 12. At the same time, while penetrating into the joint portion 17 where the water supply conduit 16 is not installed, it moves in the lateral direction and diffuses widely within the pavement 11. Thus, the water continuously supplied from the water supply conduit 16 is continuously sent out to the surface of the pavement 11 in a stable state over a long period of time, and the surface of the pavement 11 is always easily kept in a moisturized state. Therefore, by evaporating the water on the surface of the pavement 11 in a moisturized state, it is possible to effectively suppress the occurrence of the heat island phenomenon due to the water spray effect due to the latent heat of evaporation.

  In addition, according to the first embodiment, the water supplied from the water supply conduit 16 penetrates into the pumped water or water retaining block 12 from the side surface of the pumped water or water retained block 12 and moves in the lateral direction. Compared to the case where water is raised from the lower surface of the pavement and reaches the surface of the pavement even when a water-pumping or water-retaining concrete block is used as the water-elevating or water-retaining block 12 And, it becomes possible to effectively suppress the occurrence of efflorescence due to the reaction of water and concrete passing through the pavement, and even when using a water-lifting or water-retaining concrete block, It is possible to effectively suppress a decrease in the pumping function of the pumped water or water retaining block 12 due to aging over a long period of time.

  Furthermore, according to the first embodiment, the water supply conduit 16 for supplying water to the inside of the pavement 11 is not disposed in the sand layer 19 or the base layer 14 below the pavement 11 but is adjacent to the pumping capacity or water retention. Since the water supply conduit 16 is repaired or exchanged without removing the water-lifting or water-retaining block 12, the joint material 17 covering the water supply conduit 16 is connected to the joint portion 13 because the water supply conduit 16 is repaired or replaced. It is possible to easily carry out the repair work of the water supply path by the water supply conduit 16 by simply removing it.

  FIG. 2 shows a moisturizing block pavement structure 20 according to a preferred second embodiment of the present invention. In the moisture retention block pavement structure 20 of the second embodiment, the configuration of the intermediate laying layer 15 ′ interposed between the base layer 14 and a number of water-lifting or water retention blocks 11 is the same as that of the first embodiment. The other configurations are the same as those of the moisturizing block pavement structure 10 of the first embodiment.

  That is, in the moisturizing block pavement structure 20 of the second embodiment, the intermediate laying layer 15 ′ is composed of a mortar layer 21 using, for example, batha mortar, which is spread over the base layer 14. In addition, a large number of water-lifting or water-retaining blocks 12 are vertically and horizontally arranged on the mortar layer 21 with the height adjusted by the noro layer 22.

  The moisturizing block pavement structure 20 of the second embodiment also provides the same effects as the moisturizing block pavement structure 10 of the first embodiment, and the intermediate laying layer 15 ′ is composed of the mortar layer 21. As a result, the bottom of the water-lifting or water-retaining block 12 is fixed by the mortar layer 21, so that it is possible to form the block pavement structure 20 in which a step or the like hardly occurs after use.

  Here, in any of the moisturizing block pavement structure 10 of the first embodiment and the moisturizing block pavement structure 20 of the second embodiment, for example, as shown in FIGS. 3 and 4, the water supply conduit 16 is disposed. By setting the joint width of the joint portion 13 to 20 mm, for example, and setting the joint width of the joint portion 13 where the water supply conduit 16 is not disposed to be narrower than the joint width of the joint portion 13 where the water supply conduit 16 is disposed, for example, 10 mm. It becomes easy to identify the joint part 13 in which 16 is arranged, and it becomes possible to efficiently maintain and manage the moisturizing block pavement structure 10 and the water supply system to the pavement structure 10.

  The present invention is not limited to the above-described embodiments, and various modifications can be made. For example, the moisturizing block pavement structure of the present invention can also be used as a pavement structure such as a building or the like indoors, a rooftop, an elevated road, or an artificial ground.

10,20 Block pavement structure 11 Pavement 12 Pumping or retaining block 13 Joint part 14 Basement layer (crushed stone basement layer)
15, 15 'Intermediate laying layer 16 Water supply conduit 17 Joint material 18 Water shielding sheet or asphalt concrete layer 19 Sand layer 21 Mortar layer 21
22 Noro Formation

Claims (7)

A moisturizing block pavement structure having a function of keeping the surface of the pavement in a moisturized state,
A large number of water-lifting or water-retaining blocks that are laid side by side with an intermediate laying layer on the base layer, and a middle portion in the thickness direction of joints of the water-lifting or water-holding blocks A moisturizing block pavement structure formed by including a water supply conduit extending along the joint portion, and a joint material covering the water supply conduit and filling the joint portion.   The said intermediate | middle laying layer consists of the water-impervious sheet or asphalt concrete layer laid so as to cover the surface of the said base layer, and the sand layer spread | laid and averaged above this water-impervious sheet or asphalt concrete layer. Moisturizing block pavement structure.   The moisturizing block pavement structure according to claim 1, wherein the intermediate laying layer includes a mortar layer laid above the base layer.   The moisturizing block pavement structure according to any one of claims 1 to 3, wherein the joint portion has a joint width of 8 to 30 mm.   The moisturizing block pavement structure according to any one of claims 1 to 4, wherein a spacer member that holds a joint width of the joint portion is attached to the joint portion.   The moisturizing block pavement structure according to any one of claims 1 to 5, wherein the water supply conduit is a bleeding tube.   The moisturizing block pavement structure according to any one of claims 1 to 6, wherein the joint material is a water-permeable joint material or a water-retaining joint material.

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