JPH0584761B2 - - Google Patents
Info
- Publication number
- JPH0584761B2 JPH0584761B2 JP62052617A JP5261787A JPH0584761B2 JP H0584761 B2 JPH0584761 B2 JP H0584761B2 JP 62052617 A JP62052617 A JP 62052617A JP 5261787 A JP5261787 A JP 5261787A JP H0584761 B2 JPH0584761 B2 JP H0584761B2
- Authority
- JP
- Japan
- Prior art keywords
- soil
- water
- construction
- optimum
- compressive strength
- 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
- 239000002689 soil Substances 0.000 claims description 113
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 238000010276 construction Methods 0.000 claims description 27
- 230000035699 permeability Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 10
- 238000005056 compaction Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 239000004568 cement Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 9
- 239000002245 particle Substances 0.000 description 6
- 239000004927 clay Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 244000025254 Cannabis sativa Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- JTXMVXSTHSMVQF-UHFFFAOYSA-N 2-acetyloxyethyl acetate Chemical compound CC(=O)OCCOC(C)=O JTXMVXSTHSMVQF-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000000386 athletic effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、構築土壌として透水性があり、凍上
せず、圧縮強度、曲げ強度を有し、種々の用途に
適合できる構築土壌の施工方法の発明に係るもの
である。[Detailed Description of the Invention] (Field of Industrial Application) The present invention provides a construction method for constructed soil that has water permeability as constructed soil, does not freeze up, has compressive strength and bending strength, and is suitable for various uses. This invention relates to the invention.
（従来の技術及びその問題点）
構築土壌の構築方法としては、経済的なソイル
セメント工法が一般的である。(Prior art and its problems) As a method for constructing construction soil, the economical soil cement method is generally used.
このソイルセメント工法の用途は種々あり、剛
性、タワミ性の両舗装の道路、街路、飛行場の下
層路盤や上層路盤、周期的、連続的に浸水や波の
作用を受けるような斜面の表面処理、アース・ダ
ムのコアー、貯水地のライニング等が主なもので
ある。 This soil-cement method has a variety of uses, including rigid and deflecting roads, streets, lower and upper bases for airports, surface treatment of slopes subject to periodic and continuous water inundation and wave action, etc. The main products are cores for earth dams and linings for water storage areas.
従来のソイルセメント工法は前記したような現
場に適用されているが、今まで使用土を選択し、
セメントの使用量を極度に多量に使用し、水分を
土壌の突固め最適土壌含水比となるよう調整し、
機械的に締固め養生して圧縮強度及び曲げ強度を
得ることのみを主眼としていた。 The conventional soil cement method has been applied to the above-mentioned sites, but until now it has been difficult to select the soil to be used.
By using extremely large amounts of cement and tamping the soil, we adjust the water content to the optimum soil moisture content.
The main focus was on mechanically compacting and curing to obtain compressive strength and bending strength.
その為、当然ソイルセメント工法によつて得ら
れる構築土壌は非透水性であり、又非透水性でな
ければならないような現場に適用されているの
で、透水性があるソイルセメント工法など今まで
考えられたことはなかつた。 Therefore, the construction soil obtained by the soil cement method is naturally non-permeable, and since it is applied to sites where it must be impermeable, the soil cement method, which is permeable, has not been considered until now. I have never been disappointed.
一方、各種の運動競技場のスポーツサーフエー
ス、歩道、ジヨギングコースなどでは、雨水によ
る地表面の軟弱化により、使用時期、時間が制限
されるということで問題となつている。 On the other hand, at various sports stadiums such as sports surf aces, sidewalks, jogging courses, etc., the softening of the ground surface due to rainwater has become a problem, limiting the period and time of use.
又、最近人工芝生あるいは人工芝生に乾燥砂を
充填したものを用いて造成する運動競技場の下層
路盤も検討されている。 Also, recently, a subbase course for sports stadiums constructed using artificial turf or artificial turf filled with dry sand has been studied.
そこで本発明者は以上のようなスポーツサーフ
エース、人工芝生の下層路盤、歩道、ジヨギング
コースなどに、ソイルセメント工法を適用しよう
と色々試みてきた。 Therefore, the present inventor has made various attempts to apply the soil cement construction method to the above-mentioned sports surf ace, the lower roadbed of artificial grass, sidewalks, jogging courses, etc.
ところがソイルセメント工法は、上記の用途に
用いようとする場合致命的な欠点を有しているこ
とが判明した。それはもともと非透水性であるこ
とから透水性に極めて乏しいこと、次に氷点下に
なるような地域にあつては凍上するということ、
さらには寒さによつて土壌表面が破壊するという
ことであつた。 However, it has been found that the soil cement method has a fatal drawback when used for the above-mentioned purposes. Since it is originally impermeable, it has extremely poor permeability, and secondly, in areas where the temperature drops below freezing, it will freeze up.
Furthermore, the soil surface was destroyed by the cold.
ソイルセメントの特性は、透水性を上げようと
すると、圧縮強度が落ち、圧縮強度を上げようと
すると透水性が落ちるという相反する関係があ
り、上記の欠点を解決するのは大変むずかしい問
題である。 The properties of soil cement have a contradictory relationship: if you try to increase water permeability, the compressive strength will decrease, and if you try to increase the compressive strength, the water permeability will decrease, so it is a very difficult problem to solve the above drawbacks. .
又、運動競技場のうちで、テニスのクレーコー
トは透水性があること、適当なバウンド性及びク
ツシヨン性を有する程度に圧縮強度があることも
要求され、その意味で最もむつかしいスポーツサ
ーフエースである。 In addition, among athletic fields, tennis clay courts are required to be water permeable and have compressive strength to the extent that they have appropriate bounce and cushioning properties, and in this sense, they are the most difficult sports surface to play. .
本発明者は、土木分野及びスポーツ施設分野の
技術者でソイルセメントのスポーツサーフエース
等への用途を開くには上記したようなソイルセメ
ントのもつ諸欠点を克服しなければならず、又そ
れは至難の技であることもよく承知はしている。
しかしながら、ソイルセメントで構築された土壌
の安価な点は何も増して大きな魅力であり、本発
明者はあえて上記困難に挑戦することになり、長
年に亘り研究してきた。そして今般、研究、実験
を通して新知見を得、この新知見に基いた本発明
を完成するに至つた。 The present inventor is an engineer in the field of civil engineering and sports facilities, and in order to find use of soil cement in sports surf aces, etc., it is necessary to overcome the various drawbacks of soil cement as described above, and it is extremely difficult to do so. I am well aware that this is a technique.
However, the low cost of soil constructed with soil cement is even more attractive, and the inventors of the present invention dared to take on the above-mentioned difficulties and have been conducting research for many years. Through research and experiments, we have now obtained new knowledge and completed the present invention based on this new knowledge.
（問題点を解決する為の手段） 本発明の構成の詳細を以下に説明する。(Means for solving problems) The details of the configuration of the present invention will be explained below.
国際法土質学会の座標による土性は、LSが砂
質砂土、SLが砂壌土、Ｌが壌土、CLが植壌土と
されているが、土性がLS，SL，Ｌ，CLの順位で
105μ以下の土粒子は多くなる。本発明の施工方
法において使用する土壌は、国際法土質学会の座
標による土性がSL〜LSの範囲の土壌である。 According to the coordinates of the International Society of Soil Science, LS is sandy soil, SL is sandy loam, L is loam, and CL is planted soil.
The number of soil particles smaller than 105μ increases. The soil used in the construction method of the present invention has a soil texture in the range of SL to LS according to the coordinates of the International Society of Soil Science and Technology.
この範囲の土壌は、水硬性材料と混合し易く締
固めすると圧縮強度が上り易い性質をもつてい
る。 Soil in this range has the property of being easily mixed with hydraulic materials and easily increasing its compressive strength when compacted.
しかし使用土が105μ以下の土粒子が５％以上
含まれる土壌である場合には、前処理と称し、土
壌と水硬性材料とを混合して凝結させ、土性を
SL〜LSの範囲の土壌に粒径調整して使用する。 However, if the soil used is soil that contains 5% or more of soil particles of 105μ or less, this is called pretreatment, in which the soil and hydraulic material are mixed and coagulated to improve the soil texture.
Adjust the particle size and use it for soil in the SL to LS range.
この場合の一例を説明すると、１m3の土性が
CL〜Ｌの土壌の含水比を15％〜40％の間にし、
セメント30〜50Kgと混合して一昼夜放置しておく
と、土性がSL〜LSの範囲付近の土壌に粒径調整
できる。 To explain an example of this case, the soil texture of 1m3 is
The moisture content of soil from CL to L is between 15% and 40%,
By mixing it with 30 to 50 kg of cement and leaving it for a day or night, you can adjust the particle size to a soil with soil texture in the SL to LS range.
尚、本発明でいう水硬性材料とはセメントの
他、石コウ、石灰等の水で硬化する材料をいう。 The term "hydraulic material" as used in the present invention refers to materials that harden with water, such as gypsum and lime, in addition to cement.
（実施例）
土性がSL〜LSの範囲にある土壌の突固め最適
土壌含水比は、LS側で約６〜15％、SL側で約15
〜25％である。(Example) The optimum soil water content ratio for compacting soil whose soil texture is in the range of SL to LS is approximately 6 to 15% on the LS side and approximately 15% on the SL side.
~25%.
土壌の突固め最適土壌含水比17％の土壌１m3に
対し、100Kgのセメントを混合し、土壌含水比が
土壌の突固め最適土壌含水比の1.28倍である21.7
％の土壌含水比に散水して調整し、撹拌した後4t
ローラーで４〜５回転圧をかけた場合、その透水
係数は４×10-4cm／secで圧縮強度は17Kg／cm2で
あつた。 Soil compaction: 1 m3 of soil with an optimum soil moisture content of 17% is mixed with 100 kg of cement, and the soil moisture content is 1.28 times the optimum soil moisture content for soil compaction (21.7).
4t after watering and adjusting and stirring to a soil moisture content of %
When pressure was applied 4 to 5 times with a roller, the water permeability coefficient was 4 x 10 -4 cm/sec and the compressive strength was 17 Kg/cm 2 .
尚、この場合土壌に散水するのは、水のみでよ
いが、合成樹脂エマルジヨンを１m3の土に10〜20
Kg加えると圧縮強度はより増す。この点で重要な
ことは、水硬性材料と土壌を土壌突固め最適土壌
含水比で締固めると、圧縮強度はでないが、透水
性があるということであり、土壌の突固め最適土
壌含水比以下で締固めると、透水性は良好である
が、圧縮強度が著しく落ちるということである。 In this case, only water can be used to water the soil, but 10 to 20 g of synthetic resin emulsion should be sprinkled on 1 m3 of soil.
Adding kg increases the compressive strength. What is important in this regard is that when hydraulic materials and soil are compacted at the optimum soil moisture content for soil compaction, they do not have compressive strength but have water permeability; When compacted, water permeability is good, but compressive strength is significantly reduced.
又、土壌の突固め最適土壌含水比の1.2倍以下
の土壌含水比で締め固めると透水性は良好である
が圧縮強度は必要とされる強度がでず、一方土壌
の突固め最適土壌含水比の1.5倍以上の土壌含水
比で締固めると、透水性も圧縮強度も共に落ち
る。 Also, if the soil is compacted at a soil water content ratio that is 1.2 times or less than the optimum soil water content ratio, the water permeability will be good, but the compressive strength will not be as high as required; When compacted with a soil moisture content of 1.5 times or more, both water permeability and compressive strength decrease.
従つて土壌の突固め最適土壌含水比の1.2〜1.5
倍の土壌含水比で締固めると、透水性を良好に保
つたままで、圧縮強度を満足する強度にすること
が可能である。 Therefore soil compaction with optimum soil water content ratio of 1.2 to 1.5
By compacting the soil at twice the water content, it is possible to achieve a satisfactory compressive strength while maintaining good water permeability.
次に凍土防止方法について説明すると、一般的
に圧縮強度が、20Kg／cm2以上であれば土は凍上抑
制効果があるといわれている。 Next, to explain how to prevent frozen soil, it is generally said that if the compressive strength of the soil is 20 kg/cm 2 or more, the soil will have an effect of inhibiting frost heaving.
この強度にあげる為には、第２の発明で記載さ
れているように、転圧完了の後から７〜21日の間
に、少なくとも１回転圧面に1.5〜２／m2程度
の散水をすればよく、こうすれば透水性は変らな
いが、圧縮強度は28日材令28.0Kg／cm2と著しく増
加させることができる。 In order to increase this strength, as described in the second invention, water should be sprinkled at a rate of 1.5 to 2/m 2 on the rolling pressure surface at least once within 7 to 21 days after completion of compaction. If this is done, the water permeability will not change, but the compressive strength can be significantly increased to 28.0 kg/cm 2 after 28 days.
従つて透水性があり、かつ凍上しない土にする
ことができた。 Therefore, we were able to create soil that is permeable and free from frost heaving.
次に、テニスのクレーコート及び人工芝生によ
る運動競技場の下層路盤の現場における施工方法
につき説明すると、まず現場を床盛りするか床掘
りするか決定し、床盛りも床掘りも約30cm行う。
その内床盛り現場につき説明すると、現地盤上に
10〜40mmの砕石あるいは真砂土を15cm厚さ敷き、
ローラーで転圧する。 Next, I will explain the on-site construction method for the sub-base course for tennis clay courts and sports stadiums made of artificial grass.First, it is decided whether the site will be filled with a bed or a bed excavated, and both the bed heap and the bed excavation are carried out by approximately 30 cm.
To explain about the site where the floor is piled up, there is a
Lay 10-40mm crushed stone or masago soil 15cm thick,
Roll it with a roller.
その次に土性がSL〜LSの範囲の良質土を現場
に搬入するか、現地土を用いる場合は105μ以下
の土粒子が５％以上含まれるか調査し、５％以上
含まれている土壌であれば、セメントにより粒径
調整する。以上の土壌を砕石等を転圧した上に、
約15cm敷ならし、セメントを100Kg／m3散水して
土壌とセメントをトラクター等で混合する。この
混合した土の土壌含水比を調査し、土壌が土壌の
突固め最適土壌含水比の1.2〜1.5倍となるよう水
を土１m3に対しエチレン酢ビエマルジヨン15Kgと
共に散水し、もう一度トラクター等で土壌を撹拌
する。この後、4tローラーで２〜３回仮転圧し
て、その後不陸修正し、次に本転圧をして完了す
る。 Next, either bring good quality soil with a soil quality in the range of SL to LS to the site, or if local soil is used, investigate whether it contains 5% or more of soil particles with a size of 105μ or less, and check if soil contains 5% or more. If so, adjust the particle size with cement. After compacting the above soil with crushed stone etc.,
Spread the ground approximately 15 cm, sprinkle 100 kg/ m3 of cement, and mix the soil and cement using a tractor, etc. The soil moisture content of this mixed soil was investigated, and water was sprinkled with 15 kg of ethylene acetate emulsion per 1 m 3 of soil so that the soil was 1.2 to 1.5 times the optimum soil moisture content for soil tamping, and the soil was again soiled with a tractor. Stir. After this, temporary rolling is done two to three times with a 4t roller, then unevenness is corrected, and then the final rolling is completed.
完了したなら、その上にシートをかけ養生し、
施工完了から７日〜21日の間に圧縮強度を増強さ
せる為、１〜２回1.5〜２／m2の散水を行う。 Once completed, cover it with a sheet and cure it.
Water will be sprinkled once or twice at a rate of 1.5 to 2/m 2 to increase the compressive strength between 7 and 21 days after completion of construction.
（作用）
現場における試験施工を出願人保有のグランド
で社外の者立入禁止にして昭和61年10月に施工
し、その越冬状態を昭和62年２月中旬に調査した
ところ、凍上はなく圧縮強度は31.4Kg／cm2、透水
係数は６×10-4cm／secと材令28日とほぼ同じ数
値を示した。尚、同グランドに造成されている一
般のクレーコートは完全に凍上し、雨水により使
用できない程軟弱化していた。(Operation) On-site test construction was carried out in October 1985 at a ground owned by the applicant, with no access to anyone outside the company, and its wintering conditions were investigated in mid-February 1985. As a result, there was no frost heave and the compressive strength was confirmed. was 31.4Kg/cm 2 , and the hydraulic conductivity was 6×10 -4 cm/sec, which is almost the same value as the material aged 28 days. The general clay court built at the same ground had been completely frozen over and had become so soft that it could not be used due to rainwater.
（発明の効果）
以上のように本発明は、構築土壌を施工するに
際して、土性がSL〜LSの範囲の土壌と水硬性材
料とを混合して、土壌含水比を土壌の突固め最適
土壌含水比の1.2〜1.5倍となるよう水を加えて撹
拌後転圧することを特徴とする構築土壌の施工方
法及び、構築土壌を施工するに際して、土性が
SL〜LSの範囲の土壌と水硬性材料とを混合し
て、土壌含水比を土壌の突固め最適土壌含水比の
1.2〜1.5倍となるよう水を加えて撹拌後、転圧し
てのち７日〜21日の間に少なくとも１回転圧面に
散水することを特徴とする構築土壌の施工方法で
あるから、第１の発明では土壌の突固め最適土壌
含水比の1.2〜1.5倍の水を加えることにより、初
期の目的とする圧縮強度が得られるばかりでな
く、透水性があるという効果を奏する。(Effects of the Invention) As described above, when constructing soil, the present invention mixes soil with a soil texture in the range of SL to LS and a hydraulic material, and adjusts the soil water content to the optimum soil compaction. A construction soil construction method characterized by adding water to a water content of 1.2 to 1.5 times, stirring, and then rolling compaction, and when constructing construction soil, the soil texture is
By mixing soil in the range of SL to LS with hydraulic materials, the soil moisture content can be compacted to achieve the optimum soil moisture content.
This is a construction method for construction soil, which is characterized by adding water so that the volume is 1.2 to 1.5 times, stirring it, compacting it, and then sprinkling water on the pressure surface at least once during 7 to 21 days. In the present invention, by adding water in an amount of 1.2 to 1.5 times the optimum soil moisture content for compacting the soil, not only can the initial target compressive strength be obtained, but also water permeability is achieved.
又、第２の発明では施工完了後７日〜21日の間
に少なくとも１回1.5〜２／m2散水することに
より、透水性を下げることなく圧縮強度を著しく
増加させることができ、凍上防止効果も奏する。 In addition, in the second invention, by sprinkling water at 1.5 to 2/ m2 at least once during 7 to 21 days after completion of construction, compressive strength can be significantly increased without reducing water permeability, and frost heaving can be prevented. It is also effective.
従つて、従来のソイルセメント工法では透水性
など考えられたことはなかつたが、本発明の構築
土壌の施工方法では透水性があるばかりでなく、
圧縮強度があり、しかも凍上しないという理想的
な構築土壌が提供でき、更にソイルセメント工法
と同様に経済的で安価であるので、本発明の構築
土壌の施工方法を各種運動競技場のスポーツサー
フエース、その中でも一番むずかしいといわれて
いるテニスのクレーコート、歩道、ジヨギングコ
ース、あるいは人工芝生運動競技場の下層路盤に
用いれば、圧縮強度を有するのに透水性があつ
て、水はけがよく、しかも氷点下になるようなと
ころでも凍上しないので最適であり、従来のソイ
ルセメント工法では適用できなかつた用途にも適
用できるなど格別の効果を有するものである。 Therefore, although water permeability was not considered in the conventional soil cement construction method, the construction soil construction method of the present invention not only has water permeability, but also has water permeability.
It is possible to provide an ideal construction soil that has compressive strength and does not have frost heave, and is also economical and inexpensive like the soil cement method. If used for tennis clay courts, which are said to be the most difficult of all, sidewalks, jogging courses, or the lower subbase of artificial grass sports stadiums, it will have compressive strength but is permeable and has good drainage. Moreover, it is optimal because it does not freeze heave even in sub-zero temperatures, and it has special effects such as being able to be applied to applications that cannot be applied with conventional soil cement construction methods.
Claims (1)
LSの範囲の土壌と水硬性材料とを混合して、土
壌含水比を土壌の突固め最適土壌含水比の1.2〜
1.5倍となるよう水を加えて攪拌後、転圧するこ
とを特徴とする透水性を必要とされる構築土壌の
施工方法。 ２ 構築土壌を施工するに際して、土性がSL〜
LSの範囲の土壌と水硬性材料とを混合して、土
壌含水比を土壌の突固め最適土壌含水比の1.2〜
1.5倍となるよう水を加えて攪拌後、転圧して後
７日〜21日の間に少なくとも１回転圧面に散水す
ることを特徴とする透水性を必要とされる構築土
壌の施工方法。 ３ 土壌の突固め最適土壌含水比の1.2〜1.5倍と
なるよう加える水が、合成樹脂エマルジヨンを含
んでいる水である請求項第１項又は第２項に記載
の透水性を必要とされる構築土壌の施工方法。[Claims] 1. When constructing construction soil, soil properties are SL~
By mixing soil and hydraulic material in the range of LS, the soil water content ratio can be compacted to 1.2 to the optimum soil water content ratio.
A construction method for construction soil that requires water permeability, which is characterized by adding water to 1.5 times the volume, stirring, and then compacting. 2 When constructing construction soil, the soil quality is SL~
By mixing soil and hydraulic material in the range of LS, the soil water content ratio can be compacted to 1.2 to the optimum soil water content ratio.
A construction method for construction soil that requires water permeability, which comprises adding water to the soil to make it 1.5 times its original volume, stirring the mixture, and then applying water to the compressed surface at least once during 7 to 21 days after compaction. 3. Water permeability according to claim 1 or 2, wherein the water added to 1.2 to 1.5 times the optimum soil moisture content for soil compaction is water containing a synthetic resin emulsion. Construction method of construction soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5261787A JPS63219703A (en) | 1987-03-06 | 1987-03-06 | Execution of constructed soil requiring water permeability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5261787A JPS63219703A (en) | 1987-03-06 | 1987-03-06 | Execution of constructed soil requiring water permeability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63219703A JPS63219703A (en) | 1988-09-13 |
| JPH0584761B2 true JPH0584761B2 (en) | 1993-12-03 |
Family
ID=12919758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5261787A Granted JPS63219703A (en) | 1987-03-06 | 1987-03-06 | Execution of constructed soil requiring water permeability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63219703A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51729A (en) * | 1974-06-24 | 1976-01-06 | Okabegumi Kk | DOJOGYOKOZAIO HEIYOSHITA SOIRUSEMENTONYORU ROBANANTEI KASHORIKOHO |
| JPS5998903A (en) * | 1982-11-26 | 1984-06-07 | 大阪瓦斯株式会社 | Pavement of athletic field such as tennis court utilizing modified soil and color pavement of parking field and walking road |
-
1987
- 1987-03-06 JP JP5261787A patent/JPS63219703A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51729A (en) * | 1974-06-24 | 1976-01-06 | Okabegumi Kk | DOJOGYOKOZAIO HEIYOSHITA SOIRUSEMENTONYORU ROBANANTEI KASHORIKOHO |
| JPS5998903A (en) * | 1982-11-26 | 1984-06-07 | 大阪瓦斯株式会社 | Pavement of athletic field such as tennis court utilizing modified soil and color pavement of parking field and walking road |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63219703A (en) | 1988-09-13 |
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