JP2005315068A - Surface soil runoff preventing and/or sand-blow preventing material, and method of laying the same - Google Patents
Surface soil runoff preventing and/or sand-blow preventing material, and method of laying the same Download PDFInfo
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本発明は、特定の水溶性高分子化合物及び／又は親水性高分子化合物からなる表層土の流亡防止及び／又は飛砂防止材並びにその施工方法に関するものである。 TECHNICAL FIELD The present invention relates to a material for preventing runoff and / or flying sand of a surface soil composed of a specific water-soluble polymer compound and / or a hydrophilic polymer compound, and a construction method thereof.
従来、グランド等運動施設や公園において、降雨により表層土が流亡した場合に、その有効な防止方法はなく、石が露出し、ジョギング等の運動中、足を取られ、捻挫や転倒等の原因となっていた。そのため、表層土が流亡する度に、新たな土砂を補充していた。 Conventionally, there is no effective prevention method when surface soil is washed away due to rain at ground and other exercise facilities and parks. Stones are exposed, and foot is taken during exercise such as jogging, causing sprains and falls. It was. Therefore, every time the surface soil was washed away, new soil was replenished.
又、表層土の飛砂防止のために、無機系の食塩や塩化カルシューム等を大量散布していた。このため、塩害により芝生・樹木を枯らし、鉄製の遊具、フェンス等の錆を早め、また、雨水で流亡して河川、湖沼、地下水等を富栄養化し、環境汚染する作用が顕著になり、社会的に問題視されるようになった。さらに、学校のグランド等の周辺には民家が密集し、飛砂防止の地域住民の要望が強く、環境汚染を起すことが明白でありながら、有効手段が開発されていなかった。 In addition, a large amount of inorganic salt, calcium chloride, etc. was sprayed to prevent surface sand from flying. For this reason, the lawn and trees are withered by salt damage, the rust of iron play equipment, fences, etc. is accelerated. Became a problem. In addition, there are densely populated houses around the school grounds, etc., and there is a strong demand from local residents to prevent flying sand. It is clear that environmental pollution will occur, but effective means have not been developed.
本発明の目的は、表層土の流亡及び／又は飛砂の有効な防止材およびその施工方法を提供することにある。 The objective of this invention is providing the effective prevention material of the runoff of surface layer soil and / or flying sand, and its construction method.
本発明者は、表層土の流亡防止には有効な手段が解決されておらず、また、飛砂防止には無機塩類の低分子体である塩化カルシュ−ム等を大量に散布するとの業界の常識にとらわれず、表層土の流亡防止及び／又は飛砂防止の本質にせまり、鋭意研究を重ねた結果、従来の概念では考えられなかった特定の高分子物質を表層土に散布、又は、混合すると言う極めて簡易な方法で、表層土の流亡及び／又は飛砂を抑制することを知見し、さらに検討を重ねて本発明を完成した。 The present inventor has not solved an effective means for preventing the runoff of the surface soil, and the industry has said that a large amount of inorganic salt low molecular weight calcium chloride or the like is sprayed for preventing flying sand. Regardless of common sense, it has become the essence of preventing and / or flying sand from the surface soil, and as a result of extensive research, a specific polymer material that was not considered in the conventional concept is sprayed or mixed on the surface soil. Then, it was found that it was possible to suppress the runoff and / or flying sand of the surface soil by an extremely simple method, and the present invention was completed through further studies.
即ち、本発明は、（１）水溶性高分子化合物及び／又は親水性高分子化合物を含有することを特徴とする流亡及び／又は飛砂防止材、（２）水溶性高分子化合物が、２０℃純水にもとの５％以上溶解し、４０℃で水分５％以下に乾燥した後、２０℃純水に２．０％以上溶解しない特性を有するものである上記（１）記載の防止材、（３）水溶性高分子化合物が、ポリビニルアルコールである上記（１）記載の防止材、（４）親水性高分子化合物が、ポリ酢酸ビニル高分子化合物、セルロース系高分子化合物、ブタジエン系高分子化合物、ポリ酢酸ビニルとポリビニルアルコールとの共重合体、デンプン若しくはその誘導体及びアルギン酸系高分子化合物から選ばれる１種又は２種以上である上記（１）記載の防止材、（５）さらに、短繊維状に加工されたスギ、ヒノキ、ヒバ若しくはユーカリの樹皮及びヤシガラの短繊維から選ばれる１種又は２種以上を含有する上記（１）記載の防止材、（６）上記（１）記載の防止材を表層土に混合及び／又は表層土の表面に散布することを特徴とする流亡及び／又は飛砂の防止施工方法、（７）上記（１）記載の防止材を土、砂又は砂利に予め混合、又は、水で希釈してから、表層土の表面に散布することを特徴とする流亡及び／又は飛砂の防止施工方法、（８）短繊維状に加工されたスギ、ヒノキ、ヒバ若しくはユーカリの樹皮及びヤシガラの短繊維から選ばれる１種又は２種以上を表層土に混合した上記（７）又は（８）記載の流亡及び／又は飛砂の防止施工方法を提供するものである。 That is, the present invention provides (1) a runaway and / or flying sand prevention material characterized by containing a water-soluble polymer compound and / or a hydrophilic polymer compound, and (2) a water-soluble polymer compound, Prevention of (1) described above, which has a property of dissolving 5% or more in pure water at 5 ° C., drying at 40 ° C. to 5% or less in water, and not dissolving 2.0% or more in pure water at 20 ° C. (3) The preventive material according to the above (1), wherein the water-soluble polymer compound is polyvinyl alcohol, and (4) the hydrophilic polymer compound is a polyvinyl acetate polymer compound, a cellulose-based polymer compound, or a butadiene-based material. The prevention material according to (1) above, which is one or more selected from a polymer compound, a copolymer of polyvinyl acetate and polyvinyl alcohol, starch or a derivative thereof, and an alginic acid polymer compound, (5) Short fiber The preventive material according to (1) above, which contains one or more kinds selected from processed cedar, cypress, hiba or eucalyptus bark, and short fiber of coconut husk, (6) the preventive material according to (1) above A method of preventing runaway and / or flying sand characterized by mixing and / or spraying on the surface of the surface soil, (7) Preliminary mixing of the prevention material described in (1) above with soil, sand or gravel Or a method for preventing runaway and / or flying sand, which is diluted with water and then sprayed on the surface of the surface soil, (8) Japanese cedar, cypress, hiba or eucalyptus processed into short fibers The present invention provides a method for preventing runaway and / or flying sand according to the above (7) or (8), wherein one or two or more selected from bark and short fiber of coconut shell are mixed with surface soil.
前記のように構成された本発明の新規流亡及び／又は飛砂防止材を用いた施工技術により施工すると、次の作用・利点が得られる。
（１）本発明の流亡防止及び／又は飛砂防止材に含まれる水溶性高分子化合物のポリビニルアルコールは、表層土表面の微粒子状の土壌粒子間を浸透し、乾燥することにより、予想外にも水不溶性に物性が変化して、半永久的な粘着性を帯び、土壌粒子を固定する能力が大きいために、表層土の流亡及び／又は飛砂を効率的に防止する。ポリビニルアルコールは単品でも使用出来るが、親水性高分子化合物、例えば、ポリ酢酸ビニル・ブタジエン系合成ゴム等を添加すると、より強力に流亡及び／又は飛砂を防止出来る。ポリビニルアルコールに対するこれら親水性高分子化合物の配合量は特に限定しないが、経済的な面から、通常、水溶性高分子化合物であるポリビニルアルコール１００重量部に対して、親水性高分子化合物の配合量は５〜５０重量部程度である。また、表層土に、短繊維状に加工されたスギ、ヒノキ樹皮等の短繊維状物質を混合することにより、更に、表層土の流亡防止及び／又は飛砂防止効果を高めることもできる。更に、本発明の水溶性高分子化合物及び親水性高分子化合物は可塑性を有するために、軟らかく踏圧にも脆く壊れることがない。
（２）本発明の流亡及び／又は飛砂防止材は、潮解性等を有さず、従来の潮解性を有する無機塩類系の塩化カルシューム等とは異なり、又、普通の高分子とも異なり、水溶性で処理するため土粒子間に浸透し、乾燥により予想外にも水不溶性に物性が変化して、半永久的な粘着性を帯び土粒子を固定するために、風及び雨水によって飛砂及び流亡することがなく、流亡防止及び飛砂防止作用を維持し続け、環境を汚染することがない。
（３）更には、従来技術のように、塩害による芝生・樹木を枯らし、無機塩類の電気分解により鉄製の遊具や窓枠等を錆を起こし、人の皮膚・目を刺激するような副作用がない利点がある。
（４）また、本発明の流亡及び／又は飛砂防止材によって、表層土の流亡を防止することが出来るので、１回の施工で安価に表層土の流亡及び／又は飛砂を防止することが出来る。When construction is performed by the construction technique using the new runaway and / or flying sand prevention material of the present invention configured as described above, the following actions and advantages are obtained.
(1) Polyvinyl alcohol, which is a water-soluble polymer compound contained in the runoff prevention and / or flying sand prevention material of the present invention, is inadvertently infiltrated between the finely divided soil particles on the surface soil surface and dried. In addition, the property changes to water insolubility, has a semi-permanent stickiness, and has a large ability to fix soil particles, so that the surface soil can be effectively prevented from running away and / or flying sand. Polyvinyl alcohol can be used alone, but when a hydrophilic polymer compound such as polyvinyl acetate / butadiene synthetic rubber is added, runoff and / or flying sand can be more strongly prevented. The blending amount of these hydrophilic polymer compounds with respect to polyvinyl alcohol is not particularly limited. However, the blending amount of the hydrophilic polymer compound with respect to 100 parts by weight of polyvinyl alcohol, which is a water-soluble polymer compound, from the economical viewpoint. Is about 5 to 50 parts by weight. Further, by mixing the surface soil with a short fiber material such as cedar or cypress bark that has been processed into a short fiber shape, it is possible to further enhance the effect of preventing the surface soil from running out and / or flying sand. Furthermore, since the water-soluble polymer compound and the hydrophilic polymer compound of the present invention have plasticity, they are soft and are not brittle or broken even under treads.
(2) The runaway and / or flying sand prevention material of the present invention does not have deliquescence, etc., unlike conventional inorganic salt-based calcium chloride having deliquescence, and different from ordinary polymers, Because it is treated with water-solubility, it penetrates between soil particles, and the property changes unexpectedly to water insolubility due to drying. It will not run away, it will continue to prevent the runaway and flying sand, and will not pollute the environment.
(3) Furthermore, as in the prior art, there is a side effect that irradiates lawn and trees due to salt damage, rusts iron playground equipment and window frames by electrolysis of inorganic salts, and stimulates human skin and eyes. There are no advantages.
(4) Moreover, since the runoff and / or flying sand prevention material of the present invention can prevent the runoff of surface soil, it is possible to prevent the runoff and / or flying sand of surface soil at a low cost by one construction. I can do it.
本発明の流亡及び／又は飛砂防止材は、水溶性高分子化合物及び／又は親水性高分子化合物を含有することを特徴とするものである。水溶性高分子化合物としては、２０℃純水に５％以上溶解し、４０℃で水分５％以下に乾燥した後、２０℃純水に２．０％以上溶解しない特性を有するものが挙げられ、具体的にはポリビニルアルコールが好ましい。親水性高分子化合物としては、常温で一部親水性の親水性高分子化合物であれば、種々の親水性合成高分子化合物又は親水性天然高分子化合物を用いることが出来る。例えば、ヒドロキシル基、カルボキシル基、カルボニル基、硫酸基、硫酸エステル基、リン酸基、４級アンモニウム基、アミノ基、アミド基、シアノ基、チオ基、ハロゲン基、酸化エチレン基等の親水基を持つ高分子化合物であり、１種類の単量体からなる単独高分子重合体、多単量体による共重合体、グラフト共重合体、それら重合体の誘導体が挙げられる。これら親水性高分子化合物は１種又は２種以上の併用で用いる。 The runaway and / or flying sand prevention material of the present invention is characterized by containing a water-soluble polymer compound and / or a hydrophilic polymer compound. Examples of the water-soluble polymer compound include those having a characteristic of being dissolved in 20% pure water at 5% or more, drying at 40 ° C. to a moisture content of 5% or less, and then not dissolving in 20% pure water at 2.0% or more. Specifically, polyvinyl alcohol is preferred. As the hydrophilic polymer compound, various hydrophilic synthetic polymer compounds or hydrophilic natural polymer compounds can be used as long as the hydrophilic polymer compound is partially hydrophilic at room temperature. For example, hydrophilic groups such as hydroxyl group, carboxyl group, carbonyl group, sulfate group, sulfate ester group, phosphate group, quaternary ammonium group, amino group, amide group, cyano group, thio group, halogen group, ethylene oxide group, etc. And a high molecular compound having a single monomer, a multi-monomer copolymer, a graft copolymer, and derivatives of these polymers. These hydrophilic polymer compounds are used alone or in combination of two or more.
親水性高分子化合物としては、例えば、ポリ酢酸ビニル高分子化合物（例、ポリ酢酸ビニル等）、セルロース系高分子化合物（例、カルボキシルメチルセルロースまたはそのナトリウム塩等）、ブタジエン系高分子化合物（例、合成ゴム等）、ポリ酢酸ビニルとポリビニルアルコールとの共重合体、デンプンまたはその誘導体（例、馬鈴薯、サツマイモ、コーンスターチ、米デンプン、小麦デンプン、コンニャク、タピオカ、改質デンプン、加工デンプン、デンプンリン酸エステルナトリウム、デンプングリコール酸ナトリウム等）、アルギン酸系高分子化合物（例、アルギン酸ソーダ等）、その他、トラガントゴム等の天然高分子化合物が挙げられ、使用目的や費用等により種々の重合度、鹸化度のものを使用することが出来る。 Examples of the hydrophilic polymer compound include a polyvinyl acetate polymer compound (eg, polyvinyl acetate), a cellulose polymer compound (eg, carboxymethyl cellulose or a sodium salt thereof), a butadiene polymer compound (eg, Synthetic rubber, etc., copolymers of polyvinyl acetate and polyvinyl alcohol, starch or derivatives thereof (eg, potato, sweet potato, corn starch, rice starch, wheat starch, konjac, tapioca, modified starch, modified starch, starch phosphate Examples include sodium ester, sodium starch glycolate, etc.), alginic acid polymer compounds (eg, sodium alginate, etc.), and other natural polymer compounds such as tragacanth rubber. Things can be used.
本発明で用いられる水溶性高分子化合物及び親水性高分子化合物の使用形態には特に制限はなく、水媒体の形で使用される場合には、そのままあるいは水で希釈して使用できる。また、高分子化合物を細断し、それを乾燥・粉砕した粉末状でも使用できる。その他、コロイド状、乳化液状、懸濁状、粒状、繊維状、ゲル状等の形態であってもよい。 The usage form of the water-soluble polymer compound and hydrophilic polymer compound used in the present invention is not particularly limited, and when used in the form of an aqueous medium, it can be used as it is or diluted with water. Further, it can be used in the form of a powder obtained by chopping a polymer compound and drying and grinding it. Other forms such as colloidal, emulsified liquid, suspended, granular, fibrous, and gel-like may be used.
本発明の流亡及び／又は飛砂防止材には、さらに、短繊維状に加工されたスギ、ヒノキ、ヒバ若しくはユーカリの樹皮又はヤシガラの短繊維から選ばれる短繊維状物質の１種又は２種以上を含有してもよい。短繊維状物質に表層土の土が絡まり、更に、流亡防止及び／又は飛砂防止効果を高めることが出来る。また、短繊維状物質に本発明の流亡・飛砂防止材が絡まり、短繊維状の土壌改良材の流亡を防ぐことも出来る。流亡は降雨による水流に表層土の土が流されることにより形成されるが、表層土の土が短繊維状物質に絡まって流れにくくなることで、表層土の流亡を、より効率的に防止出来る。 The runaway and / or flying sand prevention material of the present invention further includes one or two kinds of short fibrous materials selected from cedar, cypress, hiba or eucalyptus bark or coconut shell short fibers processed into short fibers. You may contain the above. The soil of the surface soil is entangled with the short fibrous substance, and furthermore, the effect of preventing runoff and / or flying sand can be enhanced. Moreover, the run-off / sand-blowing prevention material of the present invention is entangled with the short fibrous material, and the run-out of the short-fibrous soil improvement material can also be prevented. The runoff is formed by flowing the soil of the surface soil into the water flow due to the rain, but the soil of the surface soil is entangled with the short fibrous material, making it difficult to flow, so that the surface soil can be prevented more efficiently. .
また、難腐敗性を有する短繊維状物質は、腐敗することなく、長年にわたって繊維形状を保つことが出来るので、本発明の流亡及び／又は飛砂防止材と組み合わせると、流亡防止及び／又は飛砂防止等の効果をより有効に長年持続することが出来る。短繊維状物質は、特開平９−１３７４０１号に記載の方法に従って調製することができる。 In addition, since the short fibrous material having hardly perishability can maintain the fiber shape for many years without being spoiled, when it is combined with the runaway and / or flying sand prevention material of the present invention, the runaway prevention and / or flight is prevented. The effect such as sand prevention can be maintained more effectively for many years. The short fibrous substance can be prepared according to the method described in JP-A-9-137401.
短繊維状物質を配合した本発明の流亡及び／又は飛砂防止材の製造方法は、特に制限されず、水溶性高分子化合物及び／又は親水性高分子化合物と短繊維状物質とを単に混合するだけでよいが、短繊維状物質に水溶性高分子化合物及び／又は親水性高分子化合物の水溶液、懸濁液等を噴霧し、又は、短繊維状物質に粉末状の親水性高分子化合物を混合したものを、表面に散布するか、表層土に混合してもよい。又は、先に短繊維状物質を表層土に混合した後に、水溶性高分子化合物及び／又は親水性高分子化合物を表面に散布してもよい。短繊維状物質の配合量は、水溶性高分子化合物及び／又は親水性高分子化合物に対して約１〜３００重量％程度、好ましくは約５０〜１５０重量％程度である。 The method for producing the runaway and / or flying sand prevention material of the present invention containing a short fibrous material is not particularly limited, and a water-soluble polymer compound and / or a hydrophilic polymer compound and a short fibrous material are simply mixed. It is only necessary to spray an aqueous solution or suspension of a water-soluble polymer compound and / or a hydrophilic polymer compound on a short fibrous material, or a powdered hydrophilic polymer compound on a short fibrous material. A mixture of the above may be sprayed on the surface or mixed with surface soil. Alternatively, the water-soluble polymer compound and / or the hydrophilic polymer compound may be dispersed on the surface after the short fibrous substance is first mixed with the surface soil. The blending amount of the short fibrous substance is about 1 to 300% by weight, preferably about 50 to 150% by weight, based on the water-soluble polymer compound and / or the hydrophilic polymer compound.
本発明の流亡及び／又は飛砂防止材の施工方法は、防止材を表層土に混合又は表層土の表面に散布する如何なる施工方法も採用出来る。流亡及び／又は飛砂は、表層土から数ミリまでの非常に浅い位置の土の微粒子が降雨で流され、風等により、飛ぶことにより起こるものである。従って、流亡及び／又は飛砂防止材を表層土に散布するか、又は、表層から浅い位置まで混合するだけで、流亡及び／又は飛砂を十分に防止することが出来るのである。流亡及び／又は飛砂防止材を表層土に混合する場合は、その混合する深さは、表層から少なくとも、約１．０ｃｍの深さとすれば、十分に通常の流亡防止及び／又は飛砂防止機能を発揮することが出来る。なお、激しい豪雨による表層土の流出に伴う流亡に備えて、それよりも深い位置（約１０ｃｍの深さ）まで流及び／又は亡飛砂防止材を混合するようにしてもよい。本発明の流亡及び／又は飛砂防止材の施工箇所１平方メートル当たりの使用量は約１〜５００ｇ程度であり、好ましくは約５〜３００ｇ程度であるが、その目的も多様であるので、限定するものではない。 The construction method of the runaway and / or flying sand prevention material of the present invention can be any construction method in which the prevention material is mixed with the surface soil or sprayed on the surface of the surface soil. The runoff and / or flying sand occurs when fine particles of soil at a very shallow position from the surface soil to several millimeters are washed away by the rain and fly by wind or the like. Therefore, the runoff and / or flying sand can be sufficiently prevented only by spreading the runaway and / or flying sand prevention material on the surface soil or mixing from the surface layer to a shallow position. When mixing runoff and / or flying sand prevention material with surface soil, if the mixing depth is at least about 1.0 cm from the surface layer, it is sufficient to prevent ordinary runaway and / or flying sand. The function can be demonstrated. In addition, you may make it mix a flow and / or a dead-sand prevention material to a deeper position (depth of about 10 cm) in preparation for the runoff accompanying the outflow of the surface soil by heavy heavy rain. The used amount per square meter of the runaway and / or flying sand prevention material of the present invention is about 1 to 500 g, and preferably about 5 to 300 g, but the purpose is also various and limited. It is not a thing.
本発明の流亡及び／又は飛砂防止材の施工を容易にするため、流亡及び／又は飛砂防止材を、土（タルク、クレイ、鹿沼土、石粉、珪藻土等）、砂又は砂利等の鉱物質の粒〜粉状物に予め混合、又は、水に希釈して施工することも出来る。これによりグランド等に均一に散布出来、確実な流亡防止及び／又は飛砂防止効果が期待出来る。予め土、砂又は砂利等に混合して使用する場合の流亡及び／又は飛砂防止材の使用量は、土等に対して約０．５〜５０重量％程度、好ましくは約１〜２０重量％程度である。また、予め水に希釈して使用する場合の流亡及び／又は飛砂防止材の使用量は、水に対して約０．１〜７０重量％程度、好ましくは、約１〜６０重量％程度であるが、限定するものではない。 In order to facilitate the construction of the runaway and / or flying sand prevention material of the present invention, the runaway and / or flying sand prevention material is treated with minerals such as soil (talc, clay, Kanuma soil, stone powder, diatomaceous earth, etc.), sand or gravel. It can also be applied after mixing with quality particles to powder or diluting in water. As a result, it can be uniformly sprayed on the ground and the like, and a sure effect of preventing runaway and / or flying sand can be expected. The amount of the run-off and / or flying sand prevention material used when mixed with soil, sand or gravel in advance is about 0.5 to 50% by weight, preferably about 1 to 20% by weight. %. In addition, the amount of the runaway and / or flying sand prevention material used when diluted in water in advance is about 0.1 to 70% by weight, preferably about 1 to 60% by weight with respect to water. There is, but is not limited to.
本発明の流亡及び／又は飛砂防止材は、砂埃、土埃だけでなく、ごみ埃、繊維埃等、種々の飛散物の流亡及び／又は飛散をも防止出来る。また、施工可能場所も限定されるものではなく、走路、公園、グランド、道路、工事現場、石炭置場、砂置場、砂利置場等種々の場所に施工出来る。 The runaway and / or flying sand prevention material of the present invention can prevent the running and / or scattering of various scattered materials such as dust and fiber dust as well as dust and dirt. In addition, the place where construction is possible is not limited, and construction can be performed in various places such as a runway, a park, a ground, a road, a construction site, a coal yard, a sand yard, and a gravel yard.
また、本発明の流亡及び／又は飛砂防止材には、上述したように、予め短繊維状物質を混合させてもよいが、水溶性高分子化合物及び／又は親水性高分子化合物のみからなる本発明の流亡及び／又は飛砂防止材を使用する際に、短繊維状物質に混合して施工してもよい。ここに、短繊維状物質を表層土に混合する深さは、飛砂の原因となる表層の土及び流亡及び／又は飛砂防止材を短繊維状物質に絡ませる観点から、少なくとも流亡及び／又は飛砂防止材を混合した深さ以上に深い位置まで混合するのが好ましい。即ち、激しい豪雨による激しい水流がある場合には、積極的に表層土が流されて表層土表面が掘れてしまい、それと共に、表層の短繊維状物質も流されてしまう。しかしながら、短繊維状物質を深い位置まで混合しておけば、流亡防止の効果を持続させることが出来る。従って、表層から約５〜３０ｃｍの深さまで短繊維状物質を混合するのが好ましい。 Further, as described above, a short fibrous substance may be mixed in the runaway and / or flying sand prevention material of the present invention, but it consists only of a water-soluble polymer compound and / or a hydrophilic polymer compound. When the runaway and / or flying sand prevention material of the present invention is used, it may be mixed with a short fibrous substance for construction. Here, the depth at which the short fibrous material is mixed with the surface soil is at least from the viewpoint of causing the short fibrous material to get entangled with the surface soil and runoff and / or the flying sand prevention material causing the flying sand. Or it is preferable to mix to the position deeper than the depth which mixed the flying sand prevention material. That is, when there is a violent water flow due to heavy rain, the surface soil is positively washed away and the surface soil surface is dug, and at the same time, the surface short fiber material is also washed away. However, if the short fibrous substance is mixed to a deep position, the effect of preventing runaway can be maintained. Therefore, it is preferable to mix the short fibrous material from the surface layer to a depth of about 5 to 30 cm.
また、本発明の流亡及び／又は飛砂防止材を散布した上へ、他の飛砂防止材（例えば、特開２００４−００２６８１に記載の飛砂防止材等）を併用することによって、流亡及び／又は飛砂防止効果をより強固にすることも可能である。 In addition, after spraying the runaway and / or flying sand prevention material of the present invention, by using another flying sand prevention material (for example, the flying sand prevention material described in JP-A-2004-002681) in combination, It is also possible to strengthen the flying sand prevention effect.
次に実施例を示すが、本発明はこれらに限定されるものではない。部は容量を示す。
［実施例１］
カルボキシルメチルセルロースナトリウム（ＣＭＣ）５部に、水１００部を加え、水中によく攪拌して、傾斜面に１ｍ２当りＣＭＣ５ｇ相当を散布して、表層土の流亡及び又は飛砂を防止する。
［実施例２］
アルギン酸ソーダ１０部に、水１００部を加え、水中によく攪拌して、公園に１ｍ２当りアルギン酸ソーダ１０ｇ相当を散布して、表層土の流亡及び又は飛砂を防止する。
［実施例３］
ポリビニルアルコール（低粘度粉末品）１０部を、砂１００部に加え、よく混合して、運動場に１ｍ２当りポリビニルアルコール２０ｇ相当を約２ｍｍの厚さに散布して表層土の流亡及び／又は飛砂を防止する。
［実施例４］
ポリビニルアルコール（中粘度重合度品）１０部を、水１００部に加え、よく攪拌溶解したものを、スポーツグランド表層土に、予め、Ｅソイルクレイ用（株式会社大林環境技術研究所製）土深さ２０ｃｍに３０％混合したクレイグランド１ｍ２当り０．３リットル程度散布して、表層土の流亡及び／又は飛砂を防止する。
［実施例５］
実施例４に、更にその上へ、ダストストッパー（株式会社大林環境技術研究製；特開２００４−００２６８１の実施例５）施工を行い、より強固な流亡及び／又は飛砂防止作用を有するクレイグランドを施工する。
［実施例６］
ポリビニルアルコール（高粘度品）５部を、水１００部に加え、よく攪拌して溶解したものを、砂浜に１ｍ２当りポリビニルアルコール１５ｇ相当を散布して、砂浜の微砂〜砂利石の強風による飛砂防止及び／又は豪雨による流亡防止する。
［実施例７］
ポリビニルアルコール（中粘度品）１０部に酢酸ビニル５０％を含有する乳化液５部を加え、水１００部によく混合したものをクレイ運動場表層土の上に１ｍ２当り０．３リットル散布して、表層土の流亡及び／又は飛砂を防止する。
［実施例８］
ポリビニルアルコール（低粘度品）１５部に合成ゴムラテックス（クロスレンＣＭＸガンツ化成（株）製）１０部を加え、水１００部によく混合したものをクレイ運動場表層土の上に１ｍ２当り０．１リットル散布して、表層土の流亡及び／又は飛砂を防止する。Examples are shown below, but the present invention is not limited thereto. The part indicates the capacity.
[Example 1]
Add 100 parts of water to 5 parts of sodium carboxymethylcellulose (CMC), stir well in water, and spray 5 g of CMC per 1 m 2 on an inclined surface to prevent surface soil runoff and / or flying sand.
[Example 2]
10 parts of sodium alginate, 100 parts of water was added, well stirred in water, and sprayed 1 m 2 per alginate 10g corresponding to the park, to prevent erosion and or Hisuna of surface soil.
[Example 3]
Polyvinyl alcohol (low viscosity powdery product) 10 parts was added to 100 parts of sand, may be mixed, erosion and / or flying of sprayed with 1 m 2 per polyvinyl alcohol 20g corresponds to a thickness of about 2mm to playground topsoil Prevent sand.
[Example 4]
10 parts of polyvinyl alcohol (medium viscosity polymerized product) added to 100 parts of water, and well stirred and dissolved, the ground depth of the sports ground for soil soil (made by Obayashi Institute of Environmental Technology Co., Ltd.) 30% mixed sprayed to about clay ground 1 m 2 per 0.3 liters to 20 cm, to prevent erosion and / or Hisuna of surface soil.
[Example 5]
Further, a dust stopper (made by Obayashi Environmental Technology Research Co., Ltd .; Example 5 of Japanese Patent Application Laid-Open No. 2004-002681) is applied to Example 4, and a clay ground having a stronger run-off and / or flying sand prevention effect is applied. Install.
[Example 6]
Add 5 parts of polyvinyl alcohol (high viscosity product) to 100 parts of water, stir well and dissolve it, sprinkle 15 g of polyvinyl alcohol per 1 m 2 on the sandy beach, due to the strong wind of sandy sand to gravel stone Prevent flying sand and / or runoff due to heavy rain.
[Example 7]
The emulsion 5 parts containing 50% vinyl acetate in polyvinyl alcohol (medium viscosity product) 10 parts was added, a mixture well in 100 parts of water over the clay playground surface soil to 1 m 2 per 0.3 liters spraying , Prevent runoff of surface soil and / or flying sand.
[Example 8]
Polyvinyl alcohol (low viscosity product) (manufactured by Kurosuren CMX Ganz Chemical Co.) 15 parts of synthetic rubber latex 10 parts was added, 1 m 2 per a mixture well in 100 parts of water over the clay playground topsoil 0.1 Apply litter to prevent surface soil runoff and / or flying sand.
［対照１］
実施例３のポリビニルアルコールを加えない無添加の砂を運動場に散布し、塩化カルシュームを１ｍ２当り１．８ｋｇ散布した既知技術のもの。
［対照２］
実施例５のポリビニルアルコール及びダストストッパーを加えない無添加のクレイグランドに、塩化カルシューム・塩化マグネシューム・塩化カルシューム（１：１：１）混合品を１ｍ２当り１．６ｋｇ散布した既知技術のもの。[Control 1]
A known technique in which the additive-free sand to which polyvinyl alcohol of Example 3 was not added was sprayed on the playground and 1.8 kg of calcium chloride per 1 m 2 was sprayed.
[Control 2]
A known technology in which 1.6 kg / m 2 of a mixture of calcium chloride / magnesium chloride / calcium chloride (1: 1: 1) was sprayed onto the clay ground without addition of polyvinyl alcohol and dust stopper of Example 5.
［試験例１：表層土流亡及び飛砂性試験］
（１）屋外試験
幅１．５ｍ、深さ１０ｃｍ、長さ５ｍの１％勾配のグランドに、実施例１〜８及び対照１、２の各々の方法で施工したものを、自然の風雨下で１ヶ月、３ヶ月、６ヶ月、１２ヶ月経過後の表層土の流亡及び飛砂量を測定した。その結果を表１に示す。[Test Example 1: Surface soil runoff and flying sand test]
(1) Outdoor test A 1% gradient ground with a width of 1.5 m, a depth of 10 cm, and a length of 5 m was constructed by the methods of Examples 1 to 8 and Controls 1 and 2 under natural wind and rain. After 1 month, 3 months, 6 months, and 12 months, the surface soil runoff and the amount of sand were measured. The results are shown in Table 1.
（２）室内試験
（試料の調整法）
一辺５ｃｍ、深さ３ｃｍの正方形の木桝マスに、実施例１〜８及び対照１、２の各々の方法で施工した試料を、それぞれ充填し、６ｋｇ／ｃｍ２の荷重をかけ、転圧を３回繰り返し、試料を３反復調整する。（サンプル１・サンプル２・サンプル３）
（試験条件）
（ｉ）降雨による流亡は試料を１．５度の傾斜に設定し、人工降雨機で１５０ｍｍ降雨させ、水分補正して、降雨により流亡した表層土を次式で求め、同時に肉眼観察した。
流亡量（ｇ／２５ｃｍ２）＝（降雨開始前の重量）−（降雨終了後の重量）
結果を表２に示す。(2) Laboratory test (sample preparation method)
Samples constructed by the methods of Examples 1 to 8 and Controls 1 and 2 were filled in a square mallet with a side of 5 cm and a depth of 3 cm, respectively, a load of 6 kg / cm 2 was applied, and rolling force was applied. Repeat 3 times and adjust the sample 3 times. (Sample 1, Sample 2, Sample 3)
(Test conditions)
(I) For runoff due to rain, the sample was set at an inclination of 1.5 degrees, rained 150 mm with an artificial rain machine, corrected for moisture, and the surface soil washed away by rain was determined by the following equation and simultaneously observed with the naked eye.
Runoff amount (g / 25 cm 2 ) = (weight before starting rain) − (weight after end of rain)
The results are shown in Table 2.
（ｉｉ）風による飛散は、試料を送風機の風が１５度の角度で当たるようにセットし、送風機で１０ｍ／秒の風速に２時間連続当て水分補正して、飛砂量を次式で求め、同時に肉眼観察した。
飛砂量（ｍｇ／２５ｃｍ２）＝（送風開始前の重量）−（送風終了後の重量）
結果を表３に示す。(Ii) For scattering by wind, set the sample so that the wind of the blower hits at an angle of 15 degrees, apply moisture to the wind speed of 10 m / sec for 2 hours continuously with the blower and correct the moisture, and calculate the amount of sand by the following formula At the same time, the naked eye was observed.
Amount of flying sand (mg / 25 cm 2 ) = (weight before start of air blowing) − (weight after end of air blowing)
The results are shown in Table 3.
（流亡及び／又は飛砂防止性試験結果の考察）
本発明の流亡及び／又は飛砂防止材は、本発明に属さない対照区（対照１及び２）と対称的に、明白に屋外試験及び室内試験共に流亡防止及び／又は飛砂防止効果が優れていた。本発明の流亡及び／又は飛砂防止材は、１２ヶ月後になっても、表層土の流亡飛砂が防止出来、手直しの必要性がなかった。一方、対照１及び２では、約１ヶ月後から表層土の流亡飛砂が激しく、手直しが必要な状態であった。(Discussion of runoff and / or flying sand prevention test results)
The runaway and / or flying sand prevention material of the present invention is clearly superior to the runoff prevention and / or flying sand prevention effect in both the outdoor test and the indoor test in contrast to the control group (Control 1 and 2) not belonging to the present invention. It was. The runaway and / or flying sand prevention material of the present invention was able to prevent runaway sand from the surface soil even after 12 months, and there was no need for reworking. On the other hand, in Controls 1 and 2, the surface soil was severely washed away from about 1 month later, and it was necessary to rework.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005127070A JP2005315068A (en) | 2004-03-30 | 2005-03-29 | Surface soil runoff preventing and/or sand-blow preventing material, and method of laying the same |
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| JP2004130515 | 2004-03-30 | ||
| JP2005127070A JP2005315068A (en) | 2004-03-30 | 2005-03-29 | Surface soil runoff preventing and/or sand-blow preventing material, and method of laying the same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008001868A (en) * | 2006-06-26 | 2008-01-10 | Terunaito:Kk | Modifier of soil material for pavement, clay pavement material, its preparation process and paving process |
| JP2010024660A (en) * | 2008-07-16 | 2010-02-04 | Takanobu Yasuma | Dustproof treatment method for ground |
| JP2020105354A (en) * | 2018-12-27 | 2020-07-09 | 鹿島建設株式会社 | Powder dust splash preventing material |
-
2005
- 2005-03-29 JP JP2005127070A patent/JP2005315068A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008001868A (en) * | 2006-06-26 | 2008-01-10 | Terunaito:Kk | Modifier of soil material for pavement, clay pavement material, its preparation process and paving process |
| JP2010024660A (en) * | 2008-07-16 | 2010-02-04 | Takanobu Yasuma | Dustproof treatment method for ground |
| JP2020105354A (en) * | 2018-12-27 | 2020-07-09 | 鹿島建設株式会社 | Powder dust splash preventing material |
| JP7061960B2 (en) | 2018-12-27 | 2022-05-02 | 鹿島建設株式会社 | Dust scattering prevention material |
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