JP5543702B2 - Dust proofing method for the ground - Google Patents
Dust proofing method for the ground Download PDFInfo
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- JP5543702B2 JP5543702B2 JP2008185079A JP2008185079A JP5543702B2 JP 5543702 B2 JP5543702 B2 JP 5543702B2 JP 2008185079 A JP2008185079 A JP 2008185079A JP 2008185079 A JP2008185079 A JP 2008185079A JP 5543702 B2 JP5543702 B2 JP 5543702B2
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- polytetrafluoroethylene
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- 238000000034 method Methods 0.000 title claims description 45
- 239000000428 dust Substances 0.000 title claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 40
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 39
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000002562 thickening agent Substances 0.000 claims description 20
- 239000006185 dispersion Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 3
- 108010010803 Gelatin Proteins 0.000 claims description 2
- 229920002907 Guar gum Polymers 0.000 claims description 2
- 239000008273 gelatin Substances 0.000 claims description 2
- 229920000159 gelatin Polymers 0.000 claims description 2
- 235000019322 gelatine Nutrition 0.000 claims description 2
- 235000011852 gelatine desserts Nutrition 0.000 claims description 2
- 239000000665 guar gum Substances 0.000 claims description 2
- 235000010417 guar gum Nutrition 0.000 claims description 2
- 229960002154 guar gum Drugs 0.000 claims description 2
- 239000001814 pectin Substances 0.000 claims description 2
- 229920001277 pectin Polymers 0.000 claims description 2
- 235000010987 pectin Nutrition 0.000 claims description 2
- 230000001680 brushing effect Effects 0.000 claims 1
- 239000002689 soil Substances 0.000 description 35
- 230000008569 process Effects 0.000 description 17
- 238000011282 treatment Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 239000004576 sand Substances 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011550 stock solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
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Description
本発明は一般に地盤の防塵処理方法に関するものであり、特に学校のグラウンド、種々の競技場、広場、公園、屋上緑化庭園、畑などの地盤の表層土壌の防塵処理に特に適した地盤の防塵処理方法に関するものである。また、荒野、河原、砂浜、砂漠、土漠等の地盤にも適用できる。 TECHNICAL FIELD The present invention generally relates to a dust-proofing method for the ground, and is particularly suitable for dust-proofing the surface soil of the ground such as school grounds, various stadiums, open spaces, parks, rooftop gardens, and fields. It is about the method. It can also be applied to ground such as wilderness, rivers, sandy beaches, deserts, and deserts.
粉体の防塵処理方法として、ポリテトラフルオロエチレン樹脂粉末を発塵性粉体と共に高速混合ミキサーでせん断作用及び圧縮作用下で発熱させつつ混合して、ポリテトラフルオロエチレン樹脂粉末をフィブリル化させて粉体に絡ませて発塵を抑制する方法が提案されている。 As a dust-proofing method for powders, polytetrafluoroethylene resin powder is mixed with dusting powder while heating with a high-speed mixing mixer under shearing action and compression action to fibrillate the polytetrafluoroethylene resin powder. A method of suppressing dust generation by entanglement with powder has been proposed.
この防塵処理方法により調製された土壌を例えば学校のグラウンド等の表層土として投入し、グラウンドに防塵処理を施す方法が提案されている。このような防塵処理は、グラウンドの舗装と異なり、グラウンドの弾力や滑り具合等の物理的性質を大きく変えないですむ上に、ポリテトラフルオロエチレンが安定した無害な物質であるため、安全で効果が長期に持続できる処理方法として注目されている（例えば特許文献１参照）。 There has been proposed a method in which soil prepared by this dustproof treatment method is introduced as surface soil such as a school ground, and the ground is subjected to dustproof treatment. Unlike ground paving, such dust-proofing treatments do not significantly change the physical properties of the ground, such as elasticity and sliding conditions, and are safe and effective because polytetrafluoroethylene is a stable and harmless substance. Has attracted attention as a treatment method that can be sustained for a long time (see, for example, Patent Document 1).
しかしながら、このような従来の防塵処理方法により防塵処理を施した土壌をグラウンドに客土してグラウンドの防塵処理をする場合には、グラウンドの土壌にポリテトラフルオロエチレン樹脂粉末を混合してフィブリル化して土壌に絡ませるために、ヘンシェルミキサー等の高速混合ミキサーを用いて高速で強く攪拌して摩擦熱により７０℃以上に加熱する必要がある。 However, when the soil subjected to the dust-proofing treatment by the conventional dust-proofing method is applied to the ground and subjected to the dust-proofing treatment of the ground, polytetrafluoroethylene resin powder is mixed with the ground soil to form a fibril. In order to entangle the soil, it is necessary to vigorously stir at high speed using a high-speed mixing mixer such as a Henschel mixer and to heat to 70 ° C. or more by frictional heat.
またグラウンドに表層土として投入するためには、ポリテトラフルオロエチレン樹脂粉末と混合させるべき土壌として、グラウンドの表層部分から採掘した土壌あるいは全く別に用意した新たな土壌を大量に用意する必要がある。この大量の土壌は大型で大きなエネルギーを必要とするミキサー内で混合攪拌させねばならぬので、グラウンドからあるいは別の土壌供給源から一旦ミキサーのあるプラントへ輸送し、またポリテトラフルオロエチレンと混合して防塵処理の終わった土壌をグラウンドに輸送しなければならない。輸送が不都合な場合には、現場にプラントを建設して防塵処理作業を行わねばならない。このようなグラウンドの防塵処理作業には２０日から３０日必要であった。 In addition, in order to add to the ground as surface soil, it is necessary to prepare a large amount of soil mined from the surface layer portion of the ground or newly prepared soil as soil to be mixed with the polytetrafluoroethylene resin powder. This large amount of soil must be mixed and stirred in a large, energy-intensive mixer, so it can be transported from the ground or from another soil source to the plant where the mixer is located and mixed with polytetrafluoroethylene. The soil that has been dust-proofed must be transported to the ground. If transportation is inconvenient, a plant must be built on site to perform dust-proofing work. Such ground dust-proofing work required 20 to 30 days.
さらに、例えば学校のグラウンド等の防塵処理すべき地盤の土壌には、殆どの場合砂や礫が含まれているが、上述の従来の防塵処理方法では砂や礫に対する防塵効果が十分には期待できない。 Furthermore, for example, the soil on the ground to be dust-proofed such as school grounds mostly contains sand and gravel, but the conventional dust-proofing method described above is sufficiently expected to have a dust-proof effect on sand and gravel. Can not.
このように、従来の地盤の防塵処理方法においては、攪拌による加熱のために比較的大規模な設備と大きなエネルギーと長時間の処理作業が必要であり、また大量の土壌の輸送が必要であり、さらに多様な組成の地盤に必ずしも対応できないという課題があった。 As described above, in the conventional dust-proofing method for the ground, relatively large-scale equipment, large energy, and long-time processing work are required for heating by stirring, and a large amount of soil must be transported. In addition, there is a problem that it is not always possible to cope with the ground of various compositions.
従ってこの発明の目的は、小規模な設備機器で迅速に施工ができ、安全で安定した地盤の防塵処理方法を提供することである。 Accordingly, an object of the present invention is to provide a safe and stable dust-proofing method for the ground which can be quickly constructed with small-scale equipment.
従って、この発明の地盤の防塵処理方法は、水とポリテトラフルオロエチレンと増粘剤との混合液を用意する工程と、この混合液を防塵処理すべき地盤に散布する工程と、この地盤を耕す工程とを備えることを特徴とする地盤の防塵処理方法である。 Therefore, the ground dust-proofing method of the present invention comprises a step of preparing a mixed liquid of water, polytetrafluoroethylene and a thickener, a step of spraying the mixed liquid onto the ground to be dust-proofed, And a plowing process.
この発明の地盤の防塵処理方法によれば、多様な地盤に対しても簡単な機器を用いた短時間の施工で安全で高性能の防塵処理が完了できるという効果が得られる。 According to the ground dustproofing method of the present invention, it is possible to obtain an effect that a safe and high-performance dustproofing treatment can be completed for various grounds in a short time using simple equipment.
実施の形態１．
この発明の地盤の防塵処理方法は、学校のグラウンド、種々の競技場、広場、公園などの表層土壌に施すのに特に適しているので、ここでは地盤としてグラウンドを例にして説明する。この発明で、「地盤」とは学校のグラウンド、種々の競技場、広場、公園、屋上緑化庭園、畑などの地盤をも、荒野、河原、砂浜、砂漠、土漠等の広く一般の地盤をも含み、また「土壌」とは一般に地盤を構成する物質のうち防塵処理が必要になることのある物質を意味し、所謂土、シルト、砂、小径の礫およびこれらの混合物を含む。
Embodiment 1 FIG.
The ground dust-proofing method according to the present invention is particularly suitable for application to surface soils such as school grounds, various stadiums, plazas, parks, etc., so here, the ground will be described as an example. In this invention, “ground” refers to ground such as school grounds, various stadiums, open spaces, parks, rooftop gardens, and fields, as well as the general ground such as wilderness, rivers, sandy beaches, deserts, and deserts. In addition, the term “soil” generally means a substance that needs to be dust-proofed among substances constituting the ground, and includes so-called soil, silt, sand, small-diameter gravel, and a mixture thereof.
図１はこの発明のポリテトラフルオロエチレンを用いた地盤の防塵処理方法の工程を示す概略フローチャートである。図１において、地盤の防塵処理方法は、水とポリテトラフルオロエチレン（ＰＴＦＥ）と増粘剤との混合液を用意する工程Ａを備えている。この混合液は、水とポリテトラフルオロエチレンとを水性ディスパージョンとして含んだものであってもよいし、水とポリテトラフルオロエチレンとを水性エマルジョンとして含んだものであってもよい。 FIG. 1 is a schematic flowchart showing the steps of a ground dustproofing method using polytetrafluoroethylene according to the present invention. In FIG. 1, the ground dustproof method includes a step A of preparing a mixed liquid of water, polytetrafluoroethylene (PTFE), and a thickener. This liquid mixture may contain water and polytetrafluoroethylene as an aqueous dispersion, or may contain water and polytetrafluoroethylene as an aqueous emulsion.
ポリテトラフルオロエチレンの水性ディスパージョン中のポリテトラフルオロエチレンの量は、水に対して０．０１〜３０．０ｗ％となるように作るが、ポリテトラフルオロエチレンの水性ディスパージョンを作るときには、水に市販のポリテトラフルオロエチレンの水性ディスパージョンを原液として加えるのが便利である。 The amount of polytetrafluoroethylene in the aqueous dispersion of polytetrafluoroethylene is made to be 0.01 to 30.0 w% with respect to water, but when making an aqueous dispersion of polytetrafluoroethylene, It is convenient to add a commercially available aqueous dispersion of polytetrafluoroethylene as a stock solution.
水は水道水、井戸水、雨水、河川水などの水を使用できる。水に加えるべき原液としてのポリテトラフルオロエチレンの水性ディスパージョンとしては、５５〜６５％のポリテトラフルオロエチレンと、３５〜４５％の水と、３．６％のポリ（オキシエチレン）＝オクチルフェニルエーテルとを含む混合液を使用できる。 Water such as tap water, well water, rain water, and river water can be used. As an aqueous dispersion of polytetrafluoroethylene as a stock solution to be added to water, 55-65% polytetrafluoroethylene, 35-45% water, 3.6% poly (oxyethylene) = octylphenyl A liquid mixture containing ether can be used.
増粘剤は、カルボキシルメチルセルロース（ｃｍｃ）、ペクチン、ゼラチン、グアーガムからなる群から選んだ少なくとも１つであるが、カルボキシルメチルセルロースがコストおよび効果の点で最も実用的である。ポリテトラフルオロエチレンの水性ディスパージョン中の増粘剤の量は、水に対して０．０００１〜０．４ｗ％であり、増粘剤がこの範囲よりも少ないと増粘剤の効果が得られず、この範囲を越えると粘性が高くなり過ぎて処理作業に不都合である。増粘剤の量が水に対して０．００２〜０．００５ｗ％であると、多様な土壌に対しても粘着効果が得られるとともに、粘性を過度に高めて作業性を悪化させるようなことがない。 The thickener is at least one selected from the group consisting of carboxymethylcellulose (cmc), pectin, gelatin, and guar gum, and carboxymethylcellulose is the most practical in terms of cost and effect. The amount of the thickener in the aqueous dispersion of polytetrafluoroethylene is 0.0001 to 0.4 w% with respect to water. If the thickener is less than this range, the effect of the thickener is obtained. If this range is exceeded, the viscosity becomes too high, which is inconvenient for processing operations. When the amount of the thickener is 0.002 to 0.005 w% with respect to water, an adhesive effect can be obtained for various soils, and the viscosity is excessively increased to deteriorate workability. There is no.
この発明では、水道水１ｍ３ 当たりポリテトラフルオロエチレンの水性ディスパージョンとして上述の原液としての水性ディスパージョンを増粘剤と共に適量加えて、最終的に０．０１〜１０．０ｗ％のポリテトラフルオロエチレンが増粘剤を含む水中に一様に分散した混合液である水性ディスパージョンを用意する。望ましい水性ディスパージョンのポリテトラフルオロエチレン濃度は、０．１〜１．０ｗ％である。濃度が下限を超えるとポリテトラフルオロエチレンの微細繊維が土壌を充分に捕捉できずに防塵効果が不十分となり、上限を超えるとポリテトラフルオロエチレンの量を増やした割に防塵効果が上がらない。 In this invention, an appropriate amount of the above-mentioned aqueous dispersion as a stock solution is added together with a thickener as an aqueous dispersion of polytetrafluoroethylene per 1 m 3 of tap water, and finally 0.01 to 10.0 w% of polytetrafluoroethylene is added. An aqueous dispersion which is a mixed solution in which ethylene is uniformly dispersed in water containing a thickener is prepared. A desirable aqueous dispersion has a polytetrafluoroethylene concentration of 0.1 to 1.0 w%. When the concentration exceeds the lower limit, the fine fibers of polytetrafluoroethylene cannot sufficiently capture the soil and the dustproof effect becomes insufficient. When the concentration exceeds the upper limit, the dustproof effect does not increase for the increased amount of polytetrafluoroethylene.
次に図１の工程Ｂで示すように、このように希釈したポリテトラフルオロエチレンの水性ディスパージョンと増粘剤との混合液を防塵処理すべき地盤であるグラウンド上に散布する。混合液の散布は、散水車を用いてグラウンド上に散布してグラウンドの表層部分が湿った状態となる程度にまで行う。混合液の散布はできるだけ一様に散布するのが望ましいが、後にグラウンド表層土を耕す工程があるので、散布の一様性に厳密さはかならずしも必要ない。このとき、グラウンドに埋設してある各種の標識等があれば、これらは除去しておくが、グラウンド自体には何等特別の前処理を必要としない。水とポリテトラフルオロエチレンと増粘剤との混合液の散布量は、ポリテトラフルオロエチレンの濃度および地盤の土壌の性質などを考慮に入れて、地盤１ｍ２ 当たり０．０１〜０．５ｍ３ で良いが、０．１〜０．３ｍ３ とすると良い結果が得られた。 Next, as shown in Step B of FIG. 1, the mixed liquid of the aqueous dispersion of polytetrafluoroethylene thus diluted and the thickener is sprayed on the ground which is the ground to be dust-proofed. The mixed liquid is sprayed to the extent that the surface layer portion of the ground becomes wet by spraying on the ground using a water truck. It is desirable to spray the mixed solution as uniformly as possible. However, since there is a process of plowing the ground surface soil later, the uniformity of the spraying is not necessarily strict. At this time, if there are various signs embedded in the ground, they are removed, but the ground itself does not require any special pretreatment. The amount of the mixed liquid of water, polytetrafluoroethylene, and thickener is 0.01 to 0.5 m 3 per 1 m 2 of the ground in consideration of the concentration of polytetrafluoroethylene and the soil properties of the ground However, good results were obtained with 0.1 to 0.3 m 3 .
このグラウンドの表層土は次に、工程Ｃで示すように、耕されて掘り起こされ、砕かれ、表層部分の土壌が上下左右前後に混ぜ合わされる。この工程は耕耘機を使用すると良い。このとき散布されたポリテトラフルオロエチレンはフィブリル化して土壌に絡みつき、粉塵状の微細な粒子までもポリテトラフルオロエチレンがしっかりと捕捉して防塵処理効果が発揮される。また、礫あるいは砂を含む地盤の場合にも、混合液中のカルボキシルメチルセルロースの粘着作用によって、フィブリル化したポリテトラフルオロエチレンでは十分に捕捉できない砂あるいは礫を、確実に捕捉することができる。耕す深さは、土壌の性質、水性ディスパージョンの濃度および散布量を考慮して、５ｃｍ〜２０ｃｍで充分である。 This ground surface soil is then cultivated, dug up and crushed, as shown in Step C, and the soil in the surface layer is mixed up, down, left and right. This process may use a cultivator. The polytetrafluoroethylene sprayed at this time is fibrillated and entangled with the soil, and even the fine dust particles are firmly captured by the polytetrafluoroethylene, thereby exhibiting a dustproof treatment effect. Even in the case of ground containing gravel or sand, sand or gravel that cannot be sufficiently captured by fibrillated polytetrafluoroethylene can be reliably captured by the adhesive action of carboxymethylcellulose in the mixed solution. A plowing depth of 5 to 20 cm is sufficient in consideration of the properties of the soil, the concentration of the aqueous dispersion and the amount of application.
次に工程Ｄに示すように、耕されたままの状態のグラウンドにローラーを走らせ、グラウンドを整地し転圧して表面を整える。 Next, as shown in Step D, the roller is run on the ground that has been cultivated, and the ground is leveled and pressed to prepare the surface.
この後、必要があれば工程Ｅに示すように仕上げブラシ等によってグラウンド表面の最終仕上げをしてグラウンドの微妙な不具合を取り除き、グラウンドの防塵処理の施工を完了させる。 Thereafter, if necessary, the ground surface is finally finished with a finishing brush or the like as shown in Step E to remove subtle defects in the ground, and the ground dust-proofing process is completed.
このような地盤の防塵処理方法の施工は、通常４、５日で完了できる。このことは、先に説明した従来の防塵処理方法、即ち防塵処理すべきグラウンドの土壌を堀起こして運搬して、防塵処理した土壌を再び運搬してグラウンドに客土してグラウンドの防塵処理とする方法が３０日程度必要であったのと比較して驚くべき違いである。 Construction of such a ground dustproofing method can usually be completed in 4 to 5 days. This means that the conventional dust-proofing method described above, that is, digging up and transporting the ground soil to be dust-proofed, transporting the dust-proofed soil again to the ground, This is a surprising difference compared to the need for a method of about 30 days.
以上の説明では、水とポリテトラフルオロエチレンと増粘剤との混合液の散布に散水車を用い、グラウンドの耕しに耕耘機を用い、グラウンドの整地、転圧にローラーを用い、また必要に応じて仕上げブラシを用いるとした。しかしながら、これらの数種の作業車を全てあるいは幾つか組み合わせて用いることもできる。例えば、散水車の後方に耕耘機の耕耘機構を連結し、その後ろに転圧ローラーを連結して散水車で牽引するようにした混成作業車あるいは一台の作業車に全ての機能を組み合わせて設けた専用作業車を用いることもできる。 In the above explanation, a watering wheel is used for spraying a mixture of water, polytetrafluoroethylene and a thickener, a tiller is used for plowing the ground, a roller is used for ground leveling and rolling, and also necessary. A finishing brush was used accordingly. However, these several types of work vehicles can be used altogether or in combination. For example, combine the functions of a hybrid work vehicle or a single work vehicle with a tiller mechanism connected to the rear of the sprinkler and a rolling roller connected to the rear to pull it with the sprinkler. A dedicated work vehicle provided can also be used.
実施の形態２．
図２はこの発明の地盤の防塵処理方法の別の実施の形態を示すフローチャートである。地盤は、地盤を構成する物質の違いにより、また気象条件等の違いにより、多種多様であり、上述のように水とポリテトラフルオロエチレンと増粘剤との混合液を地盤に散布して地盤の土壌とともに耕すという作業を一回施工しただけでは満足できる結果が得られないことがある。
Embodiment 2. FIG.
FIG. 2 is a flowchart showing another embodiment of the ground dustproofing method of the present invention. There are many different types of ground due to differences in the materials that make up the ground and due to differences in weather conditions, etc., and as described above, a mixture of water, polytetrafluoroethylene, and a thickener is sprayed on the ground. Satisfactory results may not be obtained by a single construction of plowing with other soil.
このような場合には、図２に示すように、混合液を地盤に散布する工程Ｂと地盤の表層土を耕す工程Ｃとを行った後に、工程Ｆで示すように一旦散水車で散水して地盤に水を供給し、更に工程Ｂと同様に混合液を地盤に散布する工程Ｇと、工程Ｃと同様に地盤の表層土を耕す工程Ｈとを実行し、地盤を転圧する工程Ｄおよび地盤の最終仕上げの工程Ｅと続ける。このような工程を繰り返す方法により、地盤の多様性に対応できるのである。 In such a case, as shown in FIG. 2, after performing the process B of spraying the mixed liquid on the ground and the process C of plowing the surface soil of the ground, as shown in the process F, the water is once sprinkled with a water truck. The process D for supplying water to the ground and further spraying the mixed liquid onto the ground in the same manner as in the process B, and the process H for cultivating the surface soil of the ground in the same manner as in the process C, and rolling the ground Continue with process E for final finishing of the ground. It is possible to cope with the diversity of the ground by the method of repeating such steps.
以上説明したように、この発明のポリテトラフルオロエチレンを用いた地盤の防塵処理方法は、水性ディスパージョン状態のポリテトラフルオロエチレンを水と増粘剤との混合液としてグラウンド等の地盤上に散布して耕し、フィブリル化させて土壌を捕捉する地盤の防塵処理方法であるので、従来必要であった加熱が必要なく、設備が簡単であり、主要な作業の殆どを現場で実行できて物資の大量輸送の問題が無く、これまで防塵処理が困難であった砂あるいは礫を含む地盤などの多様な組成の地盤に対しても安全で安価な防塵性能の高い施工ができるのである。 As described above, the ground dust-proofing method using polytetrafluoroethylene according to the present invention is a dispersion of polytetrafluoroethylene in an aqueous dispersion state on the ground such as a ground as a mixed liquid of water and a thickener. The soil is then cultivated and fibrillated to capture the soil, so there is no need for heating, the equipment is simple, and most of the main work can be performed on-site. There is no problem of mass transportation, and safe and inexpensive construction with high dust-proof performance can be performed even on ground of various compositions such as ground containing sand or gravel, which has been difficult to dust-proof.
Ａ 水とポリテトラフルオロエチレンと増粘剤との混合液を用意する工程、
Ｂ 混合液を防塵処理すべき地盤上に散布する工程、
Ｃ 地盤の表層土を耕す工程、
Ｄ 地盤を転圧する工程、
Ｅ 地盤の最終仕上げ工程
Ｆ 地盤に散水する工程
Ｇ 混合液を防塵処理すべき地盤上に散布する工程、
Ｈ 地盤の表層土を耕す工程。
A step of preparing a mixed solution of water, polytetrafluoroethylene and a thickener,
B The step of spraying the mixed liquid on the ground to be dust-proofed,
C Plowing the surface soil of the ground,
D The process of rolling the ground,
E The final finishing process of the ground F The process of watering the ground G The process of spraying the mixed liquid on the ground to be dust-proofed,
H Plowing the surface soil of the ground.
Claims (5)
この混合液を防塵処理すべき地盤に散布する工程と、
この地盤を耕耘機により耕す工程と、
耕した地盤を転圧する工程と、
を備え、
上記混合液は、上記増粘剤を含む水中に０．０１〜１０．０ｗ％の上記ポリテトラフルオロエチレンが分散した水性ディスパージョンであり、
上記ポリテトラフルオロエチレンの水性ディスパージョン中の上記増粘剤の量は、水に対して０．０００１〜０．４ｗ％であることを特徴とする地盤の防塵処理方法。 Preparing a mixture of water, polytetrafluoroethylene and a thickener;
A step of spraying this mixed liquid on the ground to be dust-proofed;
Plowing this ground with a cultivator ,
Rolling the cultivated ground,
Equipped with a,
The mixed liquid is an aqueous dispersion in which 0.01 to 10.0% by weight of the polytetrafluoroethylene is dispersed in water containing the thickener.
The ground dust-proofing method, wherein the amount of the thickener in the polytetrafluoroethylene aqueous dispersion is 0.0001 to 0.4 w% with respect to water .
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| JP2827152B2 (en) * | 1994-07-11 | 1998-11-18 | 村樫石灰工業株式会社 | Dust suppression method |
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