JP2012102530A - Water retaining block and water retaining structure - Google Patents

Water retaining block and water retaining structure Download PDF

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JP2012102530A
JP2012102530A JP2010251799A JP2010251799A JP2012102530A JP 2012102530 A JP2012102530 A JP 2012102530A JP 2010251799 A JP2010251799 A JP 2010251799A JP 2010251799 A JP2010251799 A JP 2010251799A JP 2012102530 A JP2012102530 A JP 2012102530A
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water
layer
water retaining
pavement
block
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Kazuhiko Umeda
和彦 梅田
Naoki Mori
直樹 森
Koichi Nagase
公一 長瀬
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Taisei Corp
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Taisei Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a water retaining block and a water retaining structure capable of reducing water supply quantity required for moistening the surface and having enhanced strength with sufficient water retaining performance.SOLUTION: A water retaining block 20 comprises a base layer 21 and a surface layer 22 which is laminated on the base layer 21. The surface layer 22 has a water retaining property, and the base layer 21 has a flexural strength and a compressive strength higher than those of the surface layer 22. In addition, a water retaining pavement body 1 (water retaining structure) using the water retaining blocks 20 comprises a bearing layer 10 and a plurality of the water retaining blocks 20 laid on the surface of the bearing layer 10. A joint part 25 formed between the neighboring water retaining blocks 20 is provided with water supply means 3a and 3b to supply water to the joint part 25.

Description

本発明は、道路の舗装や建物の外壁に用いられる保水性ブロックおよび保水性構造体に関する。   The present invention relates to a water retention block and a water retention structure used for road pavement and building outer walls.

近年、都市部の気温が周辺部に比較して高くなる所謂「ヒートアイランド現象」が問題になっている。その原因の一つとして、アスファルト舗装や建物の外壁の蓄熱作用が挙げられている。そこで、舗装や外壁の蓄熱（温度上昇）を抑制するために、舗装や外壁の表面を湿潤にして、水分蒸発に伴う気化熱によって、舗装や外壁の表面温度を低下させる保水性構造体の開発が行われている。   In recent years, the so-called “heat island phenomenon” in which the temperature in urban areas is higher than that in the surrounding area has become a problem. One of the causes is the heat storage action of asphalt pavement and the outer wall of the building. Therefore, in order to suppress the heat storage (temperature rise) of the pavement and outer wall, we developed a water-retaining structure that wets the surface of the pavement and outer wall and lowers the surface temperature of the pavement and outer wall by the heat of vaporization caused by water evaporation. Has been done.

保水性を有する舗装ブロックを用いた保水性構造体としては、複数の舗装ブロックを支持層の表面に敷設し、隣り合う舗装ブロックの間に形成された目地部に給水手段が配置されているものがある（例えば、特許文献１参照）。この構成では、給水手段から目地部を通じて舗装ブロックに水を供給することで、舗装ブロック全体を湿潤させている。   As a water retention structure using a pavement block having water retention, a plurality of pavement blocks are laid on the surface of the support layer, and water supply means are arranged at joints formed between adjacent pavement blocks (For example, refer to Patent Document 1). In this configuration, the entire pavement block is moistened by supplying water from the water supply means to the pavement block through the joint.

特開２００８−２７４６０３号公報JP 2008-274603 A

前記した従来の保水性構造体のように、舗装ブロック全体を湿潤させるためには、大量に水が必要となり、それに伴って大量に余剰水が発生するという問題がある。また、舗装ブロックの保水量を増やすために、舗装ブロック内の連続空隙を大きくすると、舗装ブロックの曲げ強度や圧縮強度が低下するという問題がある。   Like the conventional water retention structure described above, in order to wet the entire pavement block, a large amount of water is required, and accordingly, there is a problem that a large amount of excess water is generated. Moreover, when the continuous space | gap in a pavement block is enlarged in order to increase the water retention amount of a pavement block, there exists a problem that the bending strength and compressive strength of a pavement block will fall.

本発明は、前記した問題を解決し、表面を湿潤させるために必要な給水量を少なくするとともに、表面の保水性能を確保しつつ強度を大きくすることができる保水性ブロックおよび保水性構造体を提供することを課題とする。   The present invention provides a water retention block and a water retention structure capable of solving the above-mentioned problems, reducing the amount of water supply required to wet the surface, and increasing the strength while ensuring the water retention performance of the surface. The issue is to provide.

前記課題を解決するため、本発明は、保水性ブロックであって、基層と、前記基層の表側に積層された表層と、を備え、前記表層は保水性を有し、前記基層は前記表層よりも曲げ強度および圧縮強度が大きいことを特徴としている。
また、前記保水性ブロックを用いた保水性構造体としては、支持層と、前記支持層の表面に敷設された複数の前記保水性ブロックと、を備え、隣り合う前記保水性ブロックの間に目地部が形成され、前記目地部に水を供給する給水手段を設けることで、目地部を通じて各保水性ブロックに水を供給するように構成されているものがある。 In order to solve the above problems, the present invention is a water-retaining block, comprising a base layer and a surface layer laminated on the front side of the base layer, the surface layer having water retention, and the base layer is more than the surface layer. Is also characterized by high bending strength and compressive strength.
The water retention structure using the water retention block includes a support layer and a plurality of the water retention blocks laid on the surface of the support layer, and a joint between adjacent water retention blocks. There are some which are configured to supply water to each water-retaining block through the joint portion by providing a water supply means for supplying water to the joint portion.

前記した保水性ブロックおよび保水性構造体では、保水性ブロックの表面を湿潤させるときに、基層を湿潤させる必要がないため、ブロック全体を湿潤させる構成と比較して給水量を少なくすることができ、余剰水の発生を少なくすることができる。
また、表層によって保水性ブロックの保水性能を確保しつつ、基層によって保水性ブロックの強度を大きくすることができる。 In the water retention block and the water retention structure described above, when the surface of the water retention block is moistened, it is not necessary to moisten the base layer, so that the amount of water supply can be reduced as compared with the configuration in which the entire block is moistened. The generation of excess water can be reduced.
Moreover, the strength of the water retention block can be increased by the base layer while ensuring the water retention performance of the water retention block by the surface layer.

本発明の保水性ブロックおよび保水性構造体によれば、表面を湿潤させるために必要な給水量を少なくするとともに、保水性能を確保しつつ強度を大きくすることができる。   According to the water retention block and the water retention structure of the present invention, it is possible to reduce the amount of water supply required to wet the surface and increase the strength while ensuring the water retention performance.

本実施形態の保水性舗装体を示した平面図である。It is the top view which showed the water retention pavement of this embodiment. 本実施形態の保水性舗装体を示した図１のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 1 which showed the water-retaining pavement of this embodiment. 他の実施形態の保水性舗装体を示した図で、支持層に給水管を埋設した構成の側断面図である。It is the figure which showed the water-retaining pavement of other embodiment, and is a sectional side view of the structure which buried the water supply pipe in the support layer. 他の実施形態の保水性舗装体を示した図で、支持層がコンクリートである場合の側断面図である。It is the figure which showed the water-retaining pavement of other embodiment, and is a sectional side view in case a support layer is concrete.

本発明の実施形態について、適宜図面を参照しながら詳細に説明する。
本発明の保水性ブロックおよび保水性構造体は、道路の舗装や建物の外壁を構成するものであり、本実施形態では、道路を構成する保水性舗装体に適用した場合を例として説明する。 Embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
The water-retaining block and the water-retaining structure of the present invention constitute a road pavement and an outer wall of a building. In the present embodiment, a case where the present invention is applied to a water-retaining pavement constituting a road will be described as an example.

本実施形態の保水性舗装体１は、図１に示すように、歩道や車道となる舗装体層２と、舗装体層２の側縁部に沿って延設された縁石３と、を備えている。
なお、保水性舗装体１の適用対象は、歩道や車道のみならず、例えば、遊歩道、広場、駐車場などであってもよい。 As shown in FIG. 1, the water-retaining pavement 1 of the present embodiment includes a pavement layer 2 that becomes a sidewalk or a roadway, and a curb 3 that extends along a side edge of the pavement layer 2. ing.
The application target of the water-retaining pavement 1 may be not only a sidewalk and a roadway, but also a promenade, a plaza, a parking lot, and the like.

舗装体層２は、図２に示すように、舗装表面２ａから順に、保水性ブロック２０、支持層１０、遮水層３０、路盤４０を備えている。   As shown in FIG. 2, the pavement layer 2 includes a water retention block 20, a support layer 10, a water shielding layer 30, and a roadbed 40 in order from the pavement surface 2 a.

支持層１０は、図２に示すように、保水性ブロック２０を支持する層であり、後記する給水路３ａから供給された水が全体に浸透するように、透水性素材によって構成されている。本実施形態では、透水性素材として所定粒径の砂（細骨材）を使用している。
路盤４０は、支持層１０からの荷重を分散させて路床（図示せず）に伝える役割を果たす層である。
支持層１０と路盤４０との間には、遮水層３０が設けられている。遮水層３０は、支持層１０から路盤４０に水が流出するのを防ぐための層であり、例えば、遮水シートで構成されている。 As shown in FIG. 2, the support layer 10 is a layer that supports the water retention block 20, and is made of a water permeable material so that water supplied from a water supply channel 3 a to be described later penetrates the whole. In this embodiment, sand (fine aggregate) having a predetermined particle size is used as the water permeable material.
The roadbed 40 is a layer that plays a role of dispersing the load from the support layer 10 and transmitting it to the roadbed (not shown).
A water shielding layer 30 is provided between the support layer 10 and the roadbed 40. The water-impervious layer 30 is a layer for preventing water from flowing out from the support layer 10 to the roadbed 40, and is formed of, for example, a water-impervious sheet.

保水性ブロック２０は、図２に示すように、自動車や歩行者などの踏み圧を受ける部材であり、支持層１０の表面（上面）に敷設されている。本実施形態の保水性ブロック２０は、長方体形状を呈する平板ブロックによって構成されている（図１参照）。また、保水性ブロック２０は、基層２１と表層２２が一体化された構造となっている。   As shown in FIG. 2, the water retention block 20 is a member that receives a stepping pressure from an automobile or a pedestrian, and is laid on the surface (upper surface) of the support layer 10. The water retention block 20 of the present embodiment is configured by a flat plate block having a rectangular parallelepiped shape (see FIG. 1). Further, the water retention block 20 has a structure in which the base layer 21 and the surface layer 22 are integrated.

基層２１は、支持層１０側に配置された層であり、例えば、砂とセメントを混合させたモルタルによって構成されている。基層２１は、必要な強度に応じて、公知の舗装材の中から適宜選択して用いることができ、例えば、砂とセメントの他に発泡スチロール骨材や発泡ウレタンなどのような発泡樹脂系骨材を混合してもよい。   The base layer 21 is a layer disposed on the support layer 10 side, and is composed of, for example, mortar in which sand and cement are mixed. The base layer 21 can be appropriately selected from known pavement materials according to the required strength. For example, in addition to sand and cement, foamed resin-based aggregates such as foamed polystyrene aggregate and foamed urethane are used. May be mixed.

表層２２は、基層２１の表側に積層された層である。表層２２は、複数の骨材２２ａと、骨材２２ａ同士の間の連続空隙に充填された保水性グラウト材２２ｂと、を含んで構成されている。
骨材２２ａは、所望の強度を発揮できるように、材質、粒径、粗粒率、開粒度などが選択されている。骨材２２ａは、開粒度アスファルト混合物の他に、例えば、天然石、レンガ、高炉スラグなどの各種廃材によって構成される。
保水性グラウト材２２ｂは、保水性を有するグラウト材であり、例えば、セメントと水とからなる通常のグラウト材に、保水性を有する鉱物や樹脂を含有して構成されている。
なお、表層２２は、必要な保水性能や強度に応じて、公知の保水性舗装材の中から適宜選択して用いることができる。 The surface layer 22 is a layer laminated on the front side of the base layer 21. The surface layer 22 includes a plurality of aggregates 22a and a water retention grout material 22b filled in a continuous space between the aggregates 22a.
As for the aggregate 22a, the material, the particle size, the coarse particle ratio, the open particle size, and the like are selected so that the desired strength can be exhibited. The aggregate 22a is composed of various waste materials such as natural stone, brick, blast furnace slag, etc., in addition to the open-graded asphalt mixture.
The water retention grout material 22b is a grout material having water retention properties, and is constituted, for example, by containing a mineral or resin having water retention properties in a normal grout material composed of cement and water.
In addition, the surface layer 22 can be appropriately selected from known water-retaining pavement materials according to the required water retention performance and strength.

保水性ブロック２０は、基層２１を形成する材料を振動成形装置の型枠内に投入し、型枠全体に均等に振動をかけて仮成形した後に、その上に表層２２を形成する材料を投入して、加圧または型枠の自重で押さえつつ振動をかけて成形することで、基層２１と表層２２とを一体化している。   The water-retaining block 20 puts the material for forming the base layer 21 into the mold of the vibration molding apparatus, applies the vibration to the entire mold evenly and temporarily molds it, and then throws the material for forming the surface layer 22 thereon Then, the base layer 21 and the surface layer 22 are integrated by molding by applying vibration or pressing with the own weight of the mold.

本実施形態の保水性ブロック２０では、基層２１の厚さ（高さ）が表層２２の厚さよりも大きくなっている。例えば、表層２２が０．５〜１．０ｃｍ程度の厚さである場合には、基層２１は５．０ｃｍ程度に設定するとよい。
また、表層２２においては、保水性を０．１５ｇ／ｃｍ3以上、吸水性は３０分後の吸い上げ高さが７０％以上となるように設定することが望ましい。
さらに、基層２１は、表層２２よりも曲げ強度および圧縮強度が大きくなっている。表層２２においては、曲げ強度を３．０ＭＰａ以上、圧縮強度を１７．０ＭＰａ以上とし、基層２１においては、曲げ強度を５．０ＭＰａ以上、圧縮強度を３２．０ＭＰａ以上に設定することが望ましい。 In the water retention block 20 of the present embodiment, the thickness (height) of the base layer 21 is larger than the thickness of the surface layer 22. For example, when the surface layer 22 has a thickness of about 0.5 to 1.0 cm, the base layer 21 may be set to about 5.0 cm.
Further, in the surface layer 22, it is desirable to set the water retention to 0.15 g / cm 3 or more and the water absorption so that the suction height after 30 minutes is 70% or more.
Furthermore, the base layer 21 has higher bending strength and compressive strength than the surface layer 22. In the surface layer 22, it is desirable to set the bending strength to 3.0 MPa or more and the compressive strength to 17.0 MPa or more, and in the base layer 21, set the bending strength to 5.0 MPa or more and the compressive strength to 32.0 MPa or more.

図１に示すように、支持層１０の表面には、複数の保水性ブロック２０が道路の延長方向に沿って平行に並べられているとともに、道路の幅方向には互い違い（千鳥状）に並べられている。
隣り合う保水性ブロック２０の間には、目地部２５が形成されている。また、目地部２５内には、保水性ブロック２０が動かないように導水材２６が充填されている。導水材２６は、吸水性を有しており、例えば、硅砂やグラウト材によって構成されている。 As shown in FIG. 1, a plurality of water retaining blocks 20 are arranged in parallel along the road extending direction on the surface of the support layer 10, and are arranged alternately (staggered) in the width direction of the road. It has been.
A joint portion 25 is formed between adjacent water retention blocks 20. The joint portion 25 is filled with a water guide material 26 so that the water retention block 20 does not move. The water guide material 26 has water absorbency and is made of, for example, dredged sand or grout material.

縁石３は、図１に示すように、舗装体層２の側縁部に沿って延設されている。縁石３は、図２に示すように、支持層１０に支持されており、例えば、コンクリートによって構成されている。
縁石３の下部には、道路の延長方向に沿って給水路３ａが延設されている。給水路３ａには、縁石３の舗装体層２側の側面に開口した複数の給水口３ｂが形成されている。各給水口３ｂは、遮水層３０よりも高い位置で支持層１０に接しており、道路の延長方向に並べられている（図１参照）。本実施形態の給水路３ａおよび給水口３ｂは、特許請求の範囲における「給水手段」に相当するものである。 The curb 3 is extended along the side edge part of the pavement body layer 2, as shown in FIG. As shown in FIG. 2, the curb 3 is supported by a support layer 10 and is made of concrete, for example.
In the lower part of the curb 3, a water supply channel 3 a is extended along the extending direction of the road. In the water supply channel 3a, a plurality of water supply ports 3b opened on the side surface of the curb 3 on the side of the pavement layer 2 are formed. Each water supply port 3b is in contact with the support layer 10 at a position higher than the water shielding layer 30, and is arranged in the extending direction of the road (see FIG. 1). The water supply channel 3a and the water supply port 3b of the present embodiment correspond to “water supply means” in the claims.

次に、本実施形態の保水性ブロック２０および保水性舗装体１の作用について説明する。
図１に示す保水性舗装体１では、図示しない給水装置から給水路３ａに水が供給されると、図２に示すように、給水口３ｂを通じて支持層１０に水が供給される。これにより、支持層１０全体に水が浸透する。 Next, the effect | action of the water retention block 20 and the water retention pavement 1 of this embodiment is demonstrated.
In the water retention pavement 1 shown in FIG. 1, when water is supplied from a water supply device (not shown) to the water supply path 3a, water is supplied to the support layer 10 through the water supply port 3b as shown in FIG. Thereby, water permeates the entire support layer 10.

さらに、目地部２５内の導水材２６が支持層１０の表面から吸水することで、目地部２５を通じて各保水性ブロック２０の表層２２に水が供給される。
このようにして、表層２２の保水性グラウト材２２ｂに保水され、舗装表面２ａが湿潤になる。そして、舗装表面２ａの水分蒸発に伴う気化熱によって、舗装表面２ａの温度が低下する。
なお、舗装表面２ａに散水することで表層２２に水を供給してもよい。また、降雨による雨水も表層２２に供給されることになる。 Furthermore, water is supplied from the surface of the support layer 10 to the surface layer 22 of each water retaining block 20 through the joint portion 25 by the water guide material 26 in the joint portion 25 absorbing water from the surface of the support layer 10.
In this way, water is retained in the water retaining grout material 22b of the surface layer 22, and the pavement surface 2a becomes wet. And the temperature of the pavement surface 2a falls by the vaporization heat accompanying the water evaporation of the pavement surface 2a.
In addition, you may supply water to the surface layer 22 by watering the pavement surface 2a. In addition, rainwater due to rain is also supplied to the surface layer 22.

以上のような保水性ブロック２０および保水性舗装体１では、図２に示すように、舗装表面２ａを湿潤させるときに、基層２１を湿潤させる必要がないため、保水性ブロック２０全体を湿潤させる構成と比較して、給水量を少なくすることができ、余剰水の発生を少なくすることができる。
具体的には、表層２２の厚さが０．５ｃｍで、基層２１の厚さが５．５ｃｍである場合には、保水性ブロック２０全体が表層２２と同じ保水性能を有する構成と比較して、約１０分の１の保水量となるため、舗装表面２ａを湿潤させるために使用する水を大幅に節約することができる。 In the water retaining block 20 and the water retaining pavement 1 as described above, as shown in FIG. 2, when the pavement surface 2 a is moistened, it is not necessary to moisten the base layer 21, so the entire water retaining block 20 is moistened. Compared with the configuration, the amount of water supply can be reduced, and the generation of excess water can be reduced.
Specifically, when the thickness of the surface layer 22 is 0.5 cm and the thickness of the base layer 21 is 5.5 cm, the entire water retention block 20 is compared with a configuration having the same water retention performance as the surface layer 22. Since the water retention amount is about 1/10, the water used to wet the pavement surface 2a can be saved significantly.

また、表層２２によって舗装表面２ａの保水性能を確保しつつ、基層２１によって保水性ブロック２０の強度を大きくすることができる。   Further, the strength of the water retaining block 20 can be increased by the base layer 21 while ensuring the water retaining performance of the pavement surface 2 a by the surface layer 22.

以上、本発明の実施形態について説明したが、本発明は前記実施形態に限定されることなく、その趣旨を逸脱しない範囲で適宜に変更が可能である。
例えば、本実施形態では、図２に示すように、縁石３内に給水路３ａが形成されているが、図３に示す保水性舗装体１Ａのように、支持層１０内に給水管３ｃを埋設し、給水管３ｃの穴部３ｄから支持層１０に水を供給してもよい。この構成では、複数の給水管３ｃを道路に均等間隔に並べることで、支持層１０全体に水を均等に供給することができる。 The embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention.
For example, in this embodiment, as shown in FIG. 2, a water supply path 3 a is formed in the curb 3, but a water supply pipe 3 c is provided in the support layer 10 like the water retention pavement 1 </ b> A shown in FIG. 3. You may embed and supply water to the support layer 10 from the hole 3d of the water supply pipe 3c. In this configuration, water can be evenly supplied to the entire support layer 10 by arranging the plurality of water supply pipes 3c on the road at equal intervals.

また、図４に示す保水性舗装体１Ｂのように、支持層１０をコンクリートによって構成してもよい。この構成では、支持層１０に水が浸透し難いため、支持層１０と路盤４０との間に遮水層を設けなくてもよくなり、施工コストを低減することができる。なお、保水性舗装体１Ｂでは、縁石３に形成された給水口３ｂが、支持層１０よりも高い位置で目地部２５に通じており、支持層１０を湿潤させる必要がないため、目地部２５への給水効率を高めることができる。   Moreover, you may comprise the support layer 10 with concrete like the water retention pavement 1B shown in FIG. In this configuration, since it is difficult for water to penetrate into the support layer 10, it is not necessary to provide a water shielding layer between the support layer 10 and the roadbed 40, and the construction cost can be reduced. In the water-retaining pavement 1B, the water supply port 3b formed in the curb 3 leads to the joint portion 25 at a position higher than the support layer 10, and it is not necessary to wet the support layer 10, and therefore the joint portion 25 The water supply efficiency can be increased.

また、本実施形態では、図１に示すように、本発明の保水性構造体によって道路を構成しているが、本発明の保水性構造体によって建物の外壁を構成し、外壁表面の温度を低下させることもできる。   Moreover, in this embodiment, as shown in FIG. 1, although the road is comprised with the water retention structure of this invention, the outer wall of a building is comprised with the water retention structure of this invention, and the temperature of the outer wall surface is comprised. It can also be reduced.

１ 保水性舗装体（保水性構造体）
２ 舗装体層
２ａ 舗装表面
３ 縁石
３ａ 給水路（給水手段）
３ｂ 給水口（給水手段）
１０ 支持層
２０ 保水性ブロック
２１ 基層
２２ 表層
２２ａ 骨材
２２ｂ 保水性グラウト材
２５ 目地部
２６ 導水材
３０ 遮水層
４０ 路盤 1 Water-retaining pavement (water-retaining structure)
2 Pavement layer 2a Pavement surface 3 Curb 3a Water supply channel (water supply means)
3b Water supply port (water supply means)
DESCRIPTION OF SYMBOLS 10 Support layer 20 Water retention block 21 Base layer 22 Surface layer 22a Aggregate 22b Water retention grout material 25 Joint part 26 Water conveyance material 30 Water impervious layer 40 Roadbed

Claims (2)

基層と、前記基層の表側に積層された表層と、を備え、
前記表層は保水性を有し、前記基層は前記表層よりも曲げ強度および圧縮強度が大きいことを特徴とする保水性ブロック。 A base layer and a surface layer laminated on the front side of the base layer,
The surface layer has water retention, and the base layer has higher bending strength and compressive strength than the surface layer. 支持層と、前記支持層の表面に敷設された複数の保水性ブロックと、を備え、
隣り合う前記保水性ブロックの間に目地部が形成され、前記目地部に水を供給する給水手段が設けられており、
前記保水性ブロックは、基層と、前記基層の表側に積層された表層と、を備え、
前記表層は保水性を有し、前記基層は前記表層よりも曲げ強度および圧縮強度が大きいことを特徴とする保水性構造体。 A support layer, and a plurality of water retaining blocks laid on the surface of the support layer,
A joint portion is formed between the adjacent water retaining blocks, water supply means for supplying water to the joint portion is provided,
The water retention block comprises a base layer and a surface layer laminated on the front side of the base layer,
The surface layer has water retention, and the base layer has higher bending strength and compressive strength than the surface layer.
JP2010251799A 2010-11-10 2010-11-10 Water retaining block and water retaining structure Pending JP2012102530A (en)

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JP2015129394A (en) * 2014-01-07 2015-07-16 アイカ工業株式会社 Outdoor facility member, surface structure of outdoor facility member, and surface forming method for outdoor facility

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JPH11100803A (en) * 1997-09-25 1999-04-13 Ohbayashi Corp Wet pavement system
JP2000226835A (en) * 1999-02-05 2000-08-15 Rain Namakon Kk Water permeable soil block
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JP2005023545A (en) * 2003-06-30 2005-01-27 Kankyo Kogaku Kk Heat reserve restraining block
JP2008274603A (en) * 2007-04-27 2008-11-13 Taisei Corp Pavement structure
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JPS6221103U (en) * 1985-07-20 1987-02-07
JPH11100803A (en) * 1997-09-25 1999-04-13 Ohbayashi Corp Wet pavement system
JP2000226835A (en) * 1999-02-05 2000-08-15 Rain Namakon Kk Water permeable soil block
JP2004353399A (en) * 2003-05-30 2004-12-16 Taisei Rotec Corp Water-retaining pavement structure and method of constructing the same
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JP2008274603A (en) * 2007-04-27 2008-11-13 Taisei Corp Pavement structure
JP2009035939A (en) * 2007-08-01 2009-02-19 Gaeart Tk:Kk Water-retentive injection material for pavement, and pavement body
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