JP3518225B2 - Impermeable structure - Google Patents
Impermeable structureInfo
- Publication number
- JP3518225B2 JP3518225B2 JP01064297A JP1064297A JP3518225B2 JP 3518225 B2 JP3518225 B2 JP 3518225B2 JP 01064297 A JP01064297 A JP 01064297A JP 1064297 A JP1064297 A JP 1064297A JP 3518225 B2 JP3518225 B2 JP 3518225B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- pavement
- sheet
- impervious
- asphalt layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Landscapes
- Revetment (AREA)
- Processing Of Solid Wastes (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、遮水構造に関
し、特に、廃棄物処分場や貯水池等の貯留施設の底部地
盤を覆って設置されて、内部の貯留水や汚水が外部に流
出するのを防止するための遮水構造に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-impervious structure, and in particular, it is installed so as to cover the bottom ground of a storage facility such as a waste disposal site or a reservoir so that the stored water or sewage therein flows out. It relates to a water-impervious structure for preventing water.
【０００２】[0002]
【従来の技術】産業廃棄物や一般廃棄物を投棄する例え
ば埋立形の廃棄物処分場は、自然の地形を利用したり地
盤を掘削して造成された凹状の地盤の内部に、廃棄物を
埋め立て貯留してゆくものであるが、埋め立てた廃棄物
から浸出する汚水の地下浸透による環境汚染を防止する
ために、処分場の底部地盤に予め遮水工を実施すること
が義務付けられている。2. Description of the Related Art A landfill type waste disposal site, for example, for dumping industrial waste and general waste, stores the waste in a concave ground formed by utilizing natural topography or excavating the ground. Although it will be stored in landfills, it is obligatory to carry out water shield work in advance on the bottom ground of the disposal site in order to prevent environmental pollution due to underground infiltration of wastewater leached from the landfill waste.
【０００３】また、ゴルフ場のウォーターハザード、簡
易貯水池、溜池若しくはプール等の凹所に水を貯留する
施設の底部地盤には、かかる貯留水等の流出を防止すべ
く、廃棄物処分場と同様に遮水工が施工されることにな
る。The bottom ground of a facility that stores water in a recess such as a water hazard in a golf course, a simple reservoir, a reservoir or a pool is similar to a waste disposal site in order to prevent the stored water from flowing out. A water barrier will be installed in the area.
【０００４】そして、かかる遮水工としては、従来よ
り、経済性や遮水性の面から、例えば軟質の合成樹脂系
あるいはゴム系の遮水シートを敷設することによって行
なうものが知られている。As such a water shield work, conventionally, from the viewpoint of economy and water shield, it is known to lay a soft synthetic resin or rubber water shield sheet, for example.
【０００５】また、底部地盤上に設けた砕石路盤上にア
スファルトやコンクリートによる舗装を敷設形成して遮
水工としたものも知られている。It is also known that a water barrier is constructed by laying and forming a pavement made of asphalt or concrete on a crushed stone roadbed provided on the bottom ground.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記従
来の遮水シートによる遮水工によれば、これの上下に保
護砂や不織布等による保護層を設けて遮水構造が構成さ
れるものであるが、遮水シートは、数ｍｍ程度の厚さの
薄いものであるため、例えば廃棄物中の突起物等が突き
刺さって損傷しやすいとともに、特に、遮水シートが敷
設される底面地盤が、軟弱であったり不陸が存在して安
定していない場合には、これの上方にブルドーザーやダ
ンプトラック等の重機を走行させたり旋回させると、こ
れらの重量により遮水シートに撓みやよれが生じて破損
しやすくなるという課題があった。However, according to the above-mentioned conventional water-blocking work using the water-blocking sheet, a water-blocking structure is constructed by providing a protective layer made of protective sand, a non-woven fabric or the like on the upper and lower sides thereof. However, since the water-impervious sheet is thin with a thickness of several mm, it is easy to be damaged by, for example, protrusions in waste, and especially the bottom ground where the water-impermeable sheet is laid is soft. However, if there is any unevenness and it is not stable, running or turning a heavy machine such as a bulldozer or a dump truck above it will cause the weight of these to bend or deflect the impermeable sheet. There was a problem that it was easily damaged.
【０００７】また、舗装による遮水構造によれば、変形
に対する追随性に劣るため、底面地盤などに大きな変形
が生じた場合には、クラックの発生によって遮水機能が
損なわれるおそれがあるという課題があった。In addition, since the water-impervious structure by pavement is inferior to the deformation, the problem that the water-impervious function may be impaired by the generation of cracks when a large amount of deformation occurs in the bottom ground or the like. was there.
【０００８】そこで、この発明は、上記従来の課題に着
目してなされたもので、廃棄物中の突起物等による外力
を受けたり、廃棄物や保護砂等を敷き均すべく上方で重
機が走行あるいは旋回する場合でも、破損が生じるのを
容易に回避することができるとともに、大きな変形を受
けた場合でも遮水機能を損なうことのない遮水構造を提
供することを目的とするものである。Therefore, the present invention has been made in view of the above-mentioned conventional problems, and a heavy machine is installed above in order to receive an external force due to a projection or the like in waste or to spread waste and protective sand. It is an object of the present invention to provide a water-impervious structure that can easily prevent damage even when traveling or turning and that does not impair the water-impervious function even when subjected to a large deformation. .
【０００９】[0009]
【課題を解決するための手段】この発明は、上記目的を
達成するためになされたもので、その要旨は、廃棄物処
分場や貯水池等の貯留施設の底部地盤を覆って設置され
て、内部の貯留水や汚水が外部に流出するのを防止する
ための遮水構造であって、遮水シートと、該遮水シート
をサンドイッチ状に挟み込む上側舗装及び下側舗装とを
含み、該上側舗装がアスファルト混合物を敷き均して転
圧することにより形成される透水性アスファルト層であ
り、前記下側舗装がアスファルト層であることを特徴と
する遮水構造にある。The present invention has been made in order to achieve the above-mentioned object, and the gist thereof is that it is installed by covering the bottom ground of a storage facility such as a waste disposal site or a reservoir, and Is a water-impervious structure for preventing stored water and dirty water from flowing out to the outside, including the water-impervious sheet and the upper pavement and the lower pavement sandwiching the water-impervious sheet in a sandwich shape. Spread the asphalt mixture and roll it
The water-permeable structure is a water-permeable asphalt layer formed by pressing, and the lower pavement is an asphalt layer.
【００１０】ここで、この発明の遮水構造は、当該遮水
構造を２段に積層したり、当該遮水構造の上下に、さら
に遮水シートや保護層を敷設して構成することもでき
る。Here, the water-impervious structure of the present invention can be constructed by stacking the water-impervious structure in two stages or by laying a water-impervious sheet or a protective layer above and below the water-impervious structure. .
【００１１】また、この発明の遮水構造は、廃棄物処分
場や貯水池等の貯留施設の底部地盤を覆って設置され
て、内部の貯留水や汚水が外部に流出するのを防止する
ための遮水構造であって、遮水シートと、該遮水シート
をサンドイッチ状に挟み込む上側舗装及び下側舗装とを
含み、該上側舗装がアスファルト層であり、前記下側舗
装がアスファルト混合物を敷き均して転圧することによ
り形成される水密性アスファルト層であることを特徴と
する。さらに、この発明の遮水構造は、前記遮水シート
が、軟質の合成樹脂系あるいはゴム系のシート部材から
なることが好ましい。Further, the water-impervious structure of the present invention is installed so as to cover the bottom ground of a storage facility such as a waste disposal site or a reservoir so as to prevent the stored water or sewage therein from flowing out. A water-impervious structure, which includes a water-impervious sheet and an upper pavement and a lower pavement sandwiching the impermeable sheet in a sandwich shape, the upper pavement being an asphalt layer, and the lower pavement being an asphalt mixture laid and leveled. And by rolling
It is a water-tight asphalt layer formed by re-forming . Further, in the water-blocking structure of the present invention, it is preferable that the water-blocking sheet is made of a soft synthetic resin-based or rubber-based sheet member.
【００１２】そして、この発明の遮水構造によれば、ア
スファルトからなる上側舗装あるいは下側舗装は、強度
及び耐久性に優れ、廃棄物等の貯留物や重機による荷重
を広範囲に分散しつつ底部地盤に支持させることによ
り、底部地盤が軟弱であったり底部地盤に不陸がある場
合でも、上載荷重を強固に支持することになるととも
に、その剛性によって、廃棄物中の突起物等による外力
を受てもほとんど損傷することがなく、また耐候性に優
れることになる。[0012] Then, according to the impervious structures of the present invention, A <br/> Sufaru DOO or Ranaru upper pavement or lower pavement is excellent in strength and durability, load due to depot and heavy equipment, such as a waste Even if the bottom ground is soft or the bottom ground is uneven, by supporting the load on the bottom ground while dispersing it in a wide range, it will firmly support the top load and the rigidity of Even if it receives an external force due to the protrusions, etc., it is hardly damaged and has excellent weather resistance.
【００１３】また、上側舗装と下側舗装との間に挟み込
まれた遮水シートは、可撓性を備え、変形に対する追従
性が良好なため、大きな変形を受けて上側舗装や下側舗
装にクラックが生じた場合でも、破断することなく遮水
構造の遮水性を容易に保持することになる。Further, the water-impervious sheet sandwiched between the upper pavement and the lower pavement is flexible and has a good followability to the deformation, so that it undergoes a large deformation to be used as the upper pavement or the lower pavement. Even if a crack occurs, the water impermeability of the water impervious structure can be easily maintained without breaking.
【００１４】そして、この発明の遮水構造は、上側舗装
を透水性舗装によって構成すれば、特に廃棄物処分場に
おいて、貯留施設の底部を面排水層とすることができ、
これによって廃棄物等からの浸出水を効率良く集排水す
ることが可能になる。In the water-impervious structure of the present invention, if the upper pavement is made of a water-permeable pavement, the bottom of the storage facility can be used as a surface drainage layer, especially at a waste disposal site,
This makes it possible to efficiently collect and drain leachate from waste materials.
【００１５】[0015]
【発明の実施の形態】以下、この発明の好ましい実施の
形態、すなわち実施例について添付図面を参照しつつ詳
細に説明する。この実施例にかかる遮水構造１０は、図
１に示すように、一例として山間部などにおける広大な
敷地を凹状に掘削し、整地することによって造成した廃
棄物処分場１１の、斜面を含む底部地盤２０を覆うよう
にしてに設けられたもので、図２に拡大して示すよう
に、遮水シート１２と、この遮水シート１２をサンドイ
ッチ状に挟み込むようにして形成された、下側舗装とし
ての水密性アスファルト層１３及び上側舗装としての透
水性アスファルト層１４とによって構成されている。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention, that is, examples will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, the water-impervious structure 10 according to this embodiment is, for example, a bottom portion including a slope of a waste disposal site 11 constructed by excavating a vast site in a mountainous area in a concave shape and arranging the ground. It is provided so as to cover the ground 20, and as shown in an enlarged view in FIG. 2, a water impervious sheet 12 and a lower pavement formed by sandwiching the impermeable sheet 12 in a sandwich shape. The water-tight asphalt layer 13 and the water-permeable asphalt layer 14 as the upper pavement.
【００１６】ここで、水密性アスファルト層１３は、ア
スファルトコンクリート舗装に一般に使用される、水密
性を備えるように配合した公知の種々のアスファルト混
合物を使用して形成することができ、例えば底部地盤２
０上に採石等を敷設してなる路盤１５上に、舗装工事に
使用する種々の機械を使用して、アスファルト混合物を
例えば５ｃｍ程度の厚さに敷き均して転圧することによ
り、容易に形成することができる。Here, the watertight asphalt layer 13 can be formed by using various known asphalt mixtures commonly used for asphalt concrete pavement and formulated to have watertightness, for example, the bottom ground 2
It is easily formed by laying the asphalt mixture to a thickness of, for example, about 5 cm on the roadbed 15 on which the quarry or the like is laid, and by using various machines used for pavement work, and rolling it. can do.
【００１７】また、形成された水密性アスファルト層１
３の上面に設置される遮水シート１２は、例えば軟質の
合成樹脂系あるいはゴム系のシ−ト部材からなり、幅２
〜８ｍ程度の運搬や施工に適した大きさのものを、水密
性アスファルト層１３の表面に敷設した後、熱溶着など
によって縦横に接合一体化することにより、水密性アス
ファルト層１３の全体を水密に覆って配設されるもので
ある。Further, the formed watertight asphalt layer 1
The water-blocking sheet 12 installed on the upper surface of the sheet 3 is made of, for example, a soft synthetic resin-based or rubber-based sheet member and has a width of 2
After laying a size of about 8 m suitable for transportation and construction on the surface of the water-tight asphalt layer 13, the entire water-tight asphalt layer 13 is water-tight by vertically and horizontally joining and integrating them by heat welding or the like. It is arranged so as to cover.
【００１８】さらに、敷設した遮水シート１２の上面に
形成される透水性アスファルト層１４は、例えば公知の
排水性舗装に使用する、透水係数が好ましくは１×１０
-2ｃｍ／ｓ程度となるように配合したアスファルト混合
物を使用して形成することができ、敷設した遮水シート
１２上に、舗装工事に使用する種々の機械を使用して、
アスファルト混合物を例えば５ｃｍ程度の厚さに敷き均
して転圧することにより、水密性アスファルト層１３と
ともに遮水シート１２をサンドイッチ状に挟み込んだ状
態で容易に形成されることになる。Further, the water-permeable asphalt layer 14 formed on the upper surface of the laid water-impervious sheet 12 is used, for example, in a well-known drainage pavement, and preferably has a water permeability coefficient of 1 × 10.
It can be formed by using an asphalt mixture compounded to be about -2 cm / s, and on the laid water-blocking sheet 12, using various machines used for paving work,
By spreading the asphalt mixture to a thickness of, for example, about 5 cm and rolling it, the water-proof sheet 12 and the water-tight asphalt layer 13 can be easily formed in a sandwiched state.
【００１９】そして、このようにして形成されたこの実
施例の廃棄物処分場１１における遮水構造１０によれ
ば、水密性アスファルト層１３や透水性アスファルト層
１４は、耐候性に優れ、また投棄された廃棄物２１中の
突起物等による外力に対する優れた抵抗性を備えるとと
もに、投棄した廃棄物２１を敷き均すべくこれの上方に
ダンプトラックやブルドーザー等の重機を走行させる場
合でも、これらの荷重を広範囲に分散しつつ安定して底
部地盤２０に支持させることができるので、廃棄物２１
の埋立時に損傷することがほとんどなく、したがって遮
水構造１０による遮水性を長期にわたって維持するとと
もに、遮水シート１２を強固に保護することになる。According to the impermeable structure 10 in the waste disposal site 11 of this embodiment thus formed, the watertight asphalt layer 13 and the water permeable asphalt layer 14 have excellent weather resistance and are discarded. It has excellent resistance to external force due to protrusions in the discarded waste 21, and even when a heavy machine such as a dump truck or a bulldozer is run over the discarded waste 21 in order to spread it, Since the load can be stably supported on the bottom ground 20 while dispersing the load over a wide range, the waste 21
There is almost no damage at the time of landfilling, and therefore the water impermeability by the water impermeable structure 10 is maintained for a long period of time and the water impermeable sheet 12 is strongly protected.
【００２０】また、水密性アスファルト層１３と透水性
アスファルト層１４との間に挟み込まれた遮水シート１
２は、可撓性を備え、変形に対する追従性が良好なた
め、変形に対する追従性に劣る水密性アスファルト層１
３や透水性アスファルト層１４が地盤の変動等により大
きな変形を受けてクラックが生じた場合でも、破断する
ことなく遮水構造１０の遮水性を容易に保持することに
なる。Further, the water-blocking sheet 1 sandwiched between the water-tight asphalt layer 13 and the water-permeable asphalt layer 14.
2 is a watertight asphalt layer 1 having flexibility and good followability to deformation, and thus poor followability to deformation.
Even if the water-permeable permeable asphalt layer 3 or the water-permeable asphalt layer 14 undergoes a large deformation due to a change in the ground and a crack is generated, the water-impervious structure 10 can easily maintain the water-impervious property without breaking.
【００２１】さらに、この実施例によれば、上側舗装が
透水性アスファルト層１４によって構成されているの
で、廃棄物処分場１１の底部全体に面排水層が形成され
ることになり、これによって投棄された廃棄物２１中か
ら浸出する汚水を効率良く集排水することが可能にな
る。Further, according to this embodiment, since the upper pavement is constituted by the water-permeable asphalt layer 14, a surface drainage layer is formed on the entire bottom of the waste disposal site 11, which results in dumping. It becomes possible to efficiently collect and drain the sewage that leaches out from the collected waste 21.
【００２２】なお、この発明は、上記実施例の実施の態
様のものに限定されるものではなく、各請求項に記載さ
れた構成の範囲内において、種々変更して採用すること
ができる。例えば、上側舗装は、必ずしも透水機能を有
するものである必要はない。The present invention is not limited to the embodiment of the above-mentioned embodiment, but can be variously modified and adopted within the scope of the constitution described in each claim. For example, the upper pavement, need not be having the permeability functions servants Always.
【００２３】また、この発明は、廃棄物処分場に限定さ
れることなく、ゴルフ場のウォーターハザード、簡易貯
水池、溜池若しくはプール等の凹所に水を貯留する施設
など、その他の貯留施設の底部地盤を覆って設置するこ
ともできる。Further, the present invention is not limited to the waste disposal site, but the bottom of other storage facilities such as water hazards of golf courses, simple reservoirs, facilities for storing water in recesses such as pools or pools, etc. It can also be installed over the ground.
【００２４】[0024]
【発明の効果】以上詳細に説明したように、この発明の
遮水構造によれば、遮水シートと、該遮水シートをサン
ドイッチ状に挟み込む上側舗装及び下側舗装とを含み、
該上側舗装及び下側舗装はアスファルト層で構成される
ので、上側舗装及び下側舗装の強度や耐久性によって、
廃棄物中の突起物等による外力を受けたり廃棄物や保護
砂等を敷き均すべく上方で重機が走行あるいは旋回する
場合でも、遮水構造に破損が生じるのを容易に回避する
ことができるとともに、遮水シートの変形追従性によっ
て、遮水構造が大きな変形を受けた場合でもその遮水機
能を容易に保持することができる。As described [Effect Invention above in detail, according to the impervious structures of the present invention, viewed contains a water shield sheet, an upper pavement and lower pavement sandwich the shielding water sheet sandwich,
Since the upper pavement and the lower pavement are composed of asphalt layers, depending on the strength and durability of the upper pavement and the lower pavement,
It is possible to easily avoid damage to the water-impervious structure even when an external force is applied by the protrusions in the waste, or when the heavy equipment runs or turns above to spread the waste and protective sand etc. At the same time, due to the deformation followability of the water-impervious sheet, even if the water-impervious structure is greatly deformed, its water-impervious function can be easily maintained.
【００２５】本発明では、上側舗装を透水性舗装によっ
て構成しているので、特に廃棄物処分場において、貯留
施設の底部を面排水層とすることができ、これによって
廃棄物等からの浸出水を効率良く集排水することができ
る。In the present invention, since the upper pavement is constructed by the water permeable pavement, the bottom of the storage facility can be used as a surface drainage layer, especially at a waste disposal site, which allows the leachate from the waste or the like. Can be efficiently collected and drained.
【図１】この発明の一実施例にかかる遮水構造を採用し
た廃棄物処分場を説明する略示断面図である。FIG. 1 is a schematic cross-sectional view illustrating a waste disposal site that employs a water-blocking structure according to an embodiment of the present invention.
【図２】この発明の一実施例にかかる遮水構造の構成を
示す、図１のＡ部拡大図である。FIG. 2 is an enlarged view of a portion A of FIG. 1, showing a configuration of a water-impervious structure according to an embodiment of the present invention.
１０ 遮水構造 １１ 廃棄物処分場 １２ 遮水シート １３ 水密性アスファルト層（下側舗装） １４ 透水性アスファルト層（上側舗装） １５ 路盤 ２０ 底部地盤 ２１ 廃棄物 10 Impermeable structure 11 Waste disposal site 12 Impermeable sheet 13 Watertight asphalt layer (lower pavement) 14 Water-permeable asphalt layer (upper pavement) 15 roadbed 20 bottom ground 21 Waste
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−60218（ＪＰ，Ａ) 特開 平６−123108（ＪＰ，Ａ) 特開 平６−15245（ＪＰ，Ａ) 特公 平５−12035（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) B09B 1/00 E02B 3/18 E02B 7/02 ─────────────────────────────────────────────────── ───Continued from the front page (56) References JP-A-7-60218 (JP, A) JP-A-6-123108 (JP, A) JP-A-6-15245 (JP, A) JP-B 5- 12035 (JP, B2) (58) Fields investigated (Int.Cl. 7 , DB name) B09B 1/00 E02B 3/18 E02B 7/02
Claims (3)
部地盤を覆って設置されて、内部の貯留水や汚水が外部
に流出するのを防止するための遮水構造であって、 遮水シートと、該遮水シートをサンドイッチ状に挟み込
む上側舗装及び下側舗装とを含み、該上側舗装がアスフ
ァルト混合物を敷き均して転圧することにより形成され
る透水性アスファルト層であり、前記下側舗装がアスフ
ァルト層であることを特徴とする遮水構造。1. A water-impervious structure that is installed to cover the bottom ground of a storage facility such as a waste disposal site or a reservoir to prevent internal stored water or sewage from flowing out to the outside. It includes a water sheet and an upper pavement and a lower pavement sandwiching the impermeable sheet in a sandwich form, and the upper pavement is an asphalt pavement.
It is formed by laying a flat mixture and rolling it.
That a water-permeable asphalt layer, water-impervious structure, wherein the lower pavement is an asphalt layer.
部地盤を覆って設置されて、内部の貯留水や汚水が外部
に流出するのを防止するための遮水構造であって、 遮水シートと、該遮水シートをサンドイッチ状に挟み込
む上側舗装及び下側舗装とを含み、該上側舗装がアスフ
ァルト層であり、前記下側舗装がアスファルト混合物を
敷き均して転圧することにより形成される水密性アスフ
ァルト層であることを特徴とする遮水構造。2. A water-impervious structure that is installed to cover the bottom ground of a storage facility such as a waste disposal site or a reservoir to prevent internal stored water or sewage from flowing out to the outside. A water sheet and an upper pavement and a lower pavement sandwiching the impermeable sheet in a sandwich form, the upper pavement being an asphalt layer, and the lower pavement being an asphalt mixture.
A water-impervious structure characterized by a watertight asphalt layer formed by spreading and rolling .
るいはゴム系のシート部材からなることを特徴とする請
求項１または２に記載の遮水構造。3. The water-impermeable structure according to claim 1, wherein the water-impermeable sheet is made of a soft synthetic resin-based or rubber-based sheet member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01064297A JP3518225B2 (en) | 1997-01-23 | 1997-01-23 | Impermeable structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01064297A JP3518225B2 (en) | 1997-01-23 | 1997-01-23 | Impermeable structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10202217A JPH10202217A (en) | 1998-08-04 |
| JP3518225B2 true JP3518225B2 (en) | 2004-04-12 |
Family
ID=11755878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01064297A Expired - Lifetime JP3518225B2 (en) | 1997-01-23 | 1997-01-23 | Impermeable structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3518225B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4572437B2 (en) * | 2000-02-29 | 2010-11-04 | 株式会社大林組 | Impermeable paving material and paving method |
-
1997
- 1997-01-23 JP JP01064297A patent/JP3518225B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10202217A (en) | 1998-08-04 |
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