JP2005076312A - Method for preventing dusting of soil and soil subjected to dusting preventive treatment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method solving the difficult point of a conventional technique, displaying a remarkable dusting preventive effect for a prolonged term and also having the effects of the consolidation prevention of ground soil and an improvement or the like in a moisture retention and a water permeability and soil subjected to such a dusting preventive treatment. <P>SOLUTION: The dusting preventive method for soil comprises the steps of spraying a treatment agent containing water and resin to the soil and finely granulating the soil. The constitution of soil subjected to the dusting preventive treatment is composed of a treatment of the soil with the treatment agent containing the resin component and water and fine granulation. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a method for preventing soil dust generation due to wind and soil subjected to dust prevention treatment, and more specifically, soil particles are modified with resin to prevent dust generation, In addition, the present invention relates to a method capable of imparting some good characteristics to soil, and to soil subjected to such dust generation prevention treatment.

  Soil dust generation due to wind is known to have a significant adverse effect on the human body and the surrounding environment. For example, in school grounds and grounds, cornea damage, respiratory organ effects, surrounding housing structures and Problems such as contamination of laundry are cited.

  In general, the soil that is often used as the surface soil of school yard and ground, etc., can be mainly listed as single soil or mixed soil such as Arakida soil, Masa sand soil, red soil (roam soil), black soil and anthuka. Various types of fine stones may be mixed, and these soils gradually settle down due to rainfall, drying, agitation and rolling by shoes, etc., while fine soil particles gather on the surface. This causes dust generation by the action of the wind.

  At present, in order to suppress or prevent the dust generation phenomenon of the soil caused by the wind as described above, various dust generation prevention methods have been tried. For example, the dust generation prevention method for school yard, ground, etc. It can be roughly divided into three types.

  1) Watering occasionally.

  2) Sprinkle earth that is difficult to generate dust, such as Iwase sand.

  3) Sprinkle calcium chloride or magnesium chloride and use its moisture absorption and deliquescent properties.

  The soil particles in the soil have various particle sizes, and the soil particle size that causes the dust generation phenomenon is approximately 0.1 mm or less. This prevents the soil particles from rising by the wind. However, each of the above methods 1) to 3) has problems.

That is, in the method 1), the dispersed water forms an aggregate of fine soil particles that cause dust generation in the gaps between the large soil particles, and the aggregate is weighted and Dust is prevented by giving it a stickiness, but it requires watering many times a day and requires a lot of work. On the normal ground, the surface layer of soil (Arakida soil, red soil, etc.) As the surface of the soil dries, the capillarity phenomenon appears more greatly due to the influence of aggregates of fine soil particles. Even in the summer and dry seasons, even if a large amount of water is discharged, the surface layer dries immediately, and sufficient dust generation effect does not occur It is.
In addition, although the use of watering equipment such as sprinklers can be considered in the method of 1), not only can the ground not be used during watering, but installation and removal should be performed each time so that the watering equipment does not interfere with movement. It needs to be repeated and requires a lot of labor, especially when using water. Furthermore, it has been pointed out that the water-containing soil caused by sprinkling adheres to the shoe soles of athletes and hinders mobility.

  The above method 2) covers the ground surface with other soils such as Iwase sand to suppress dust generation, and if a large amount of other soils are sprayed, a sufficient dust suppression effect is expected. However, on the other hand, it is not preferable because athletic shoes are buried in the dispersed layer of the soil and become an inappropriate ground for exercise. Therefore, at present, other soils, such as Iwase sand, are only sprayed to a thickness of several millimeters from the ground soil layer, so that the ground layer can be easily exposed or dispersed by movement or rain. As a result of the soil mixed with the ground soil, there is not enough dust prevention effect, and new fine particles generated by friction of other sprayed soil during movement are generated again. There is also a problem of causing this.

  In the method of 3) above, when chlorides such as calcium chloride and magnesium chloride are sprayed on the ground, they absorb water in the soil and air and liquefy, so fine soil particles that cause dust generation , And its dissolved components prevent the generation of dust, but the application of chloride, which is a harmful substance to plants, to the soil itself is a very environmental problem, Every time chloride is impregnated and infiltrated into the soil, there is a strong possibility that it will lose its effectiveness in a short period of time and part of it will become an aqueous solution and escape to the surroundings, so this method is gradually disappearing .

  The present invention was made against the background of the prior art as described above. Compared to the method according to the prior art, the present invention exhibits a remarkable dust prevention effect over a long period of time, and also prevents caking and moisturizing of ground soil. -It aims at providing the method which also has effects, such as improvement of water permeability, and the soil which gave such dusting prevention processing.

  The structure of the soil dust prevention method employed by the present invention to achieve the above object is characterized in that the soil is finely divided after spraying a treatment agent containing a resin component and water on the soil. To do.

  Further, the structure of the soil subjected to the dust generation prevention treatment adopted by the present invention to achieve the above object is characterized in that the soil is treated with a treatment agent containing a resin component and water and is finely divided. It is characterized by doing.

  Hereinafter, the present invention will be described in detail.

  As a target of the soil dust prevention method according to the present invention, simple soils such as Arakida soil, Masa sand soil, red soil (Rohm soil), black soil, and anthuka, which are often used as surface soil for schoolyards and grounds, etc. Alternatively, mixed soil can be mainly cited, but various fine stones may be mixed, and as already explained, these soils are gradually removed by rainfall, drying, agitation and rolling by shoes, etc. While large soil particles settle on the surface, fine soil particles collect on the surface, which causes dust generation by the action of the wind.

  In the soil dust prevention method of the present invention, for example, a treatment agent containing a resin component and water is first sprayed on the soil as described above, and the resin component used in this treatment agent is water. Examples of the resin component that can be emulsified and dispersed include acrylic acid ester resins, vinyl acetate resins, urethane resins, and copolymers thereof. It is also possible to use a resin imparted with a hydrophilic group and made water-soluble or self-dispersible.

  The treating agent used in the method of the present invention contains water in addition to the resin component, and an appropriate additive may be added as necessary. Examples of such additives include surfactants, preservatives and antifreeze agents for emulsion polymerization of the resin component with water.

In addition, although it does not specifically limit about the said resin component and the ratio of water in the processing agent used by the method of this invention, For example, resin component 0.1-5 weight%
99.9-95.0% by weight of water
Can be mentioned.

  In the method of the present invention, the means for spraying the treatment agent on the soil is not particularly limited, and the means commonly used for spraying water or the like to the soil is changed as it is or appropriately. Can be adopted.

In the method of the present invention, the amount of the treatment agent applied to the soil is not particularly limited, and can be appropriately determined according to the state of the soil and the thickness of the soil layer, etc. For example, a range of 0.5 to 4 liters per 1 m ² can be mentioned.

  In the soil dusting prevention method of the present invention, the soil to which the treatment agent is dispersed is then finely divided, but the treatment agent is dispersed before or after the finening. The soil may be dried by an appropriate means.

  The above-mentioned “fine graining” means that the soil particles of the soil that have been agglomerated to a certain extent with the treatment agent dispersed are the soil particles before the treatment agent is dispersed (large soil particles in the method of 1) The soil particles having the same size as the above are preferably used, and it is preferably performed using a cultivator. In addition, according to the state of soil, you may perform the same "fine graining" with respect to the soil before spraying the said processing agent.

Finally, the soil is rolled with a roller or the like as necessary, and the application of the soil dusting prevention method of the present invention is completed.
In the soil to which the method for preventing dust generation of the soil of the present invention is applied as described above, the fine soil particles that cause the dust generation phenomenon are caused by the action of the resin in the treatment agent. Do not become attached to the surface of the large soil particles other than the fine soil particles and fixed, or the fine soil particles adhere to each other and increase the size and weight to the extent that does not cause dust generation. Thus, the dust generation phenomenon is prevented.

  In addition, the soil particles before applying the method for preventing dust generation of the present invention are composed of fine soil particles that cause dust generation and other small, medium, and large particles. When a treatment agent containing a resin component used in the present invention is sprayed, it penetrates into fine cracks that cause cracks existing on the surface of small, medium and large particles, and forms a strong resin impregnated body after drying. , Prevents cracking of fine cracks and prevents generation of fine soil particles that cause dust generation.

  Furthermore, if the treating agent containing the resin component used in the present invention covers the entire soil particles, it functions to prevent cracking and wear of the soil particles themselves. In addition, the resin component used in the present invention has a rubber after drying. When an elastic material is used, the soil particles to which the soil dusting prevention method of the present invention is applied also have a structure that is not easily broken by external pressure.

  In addition, in the soil to which the method for preventing dust generation of the soil of the present invention is applied, fine soil particles that substantially cause the dust generation phenomenon do not exist alone, so that dust generation is only prevented. But it also has another effect. That is, in order to improve drainage after rain, in general, underground pipes are often buried in the ground, and if there are a lot of fine soil particles that cause dust generation, the soil becomes gradually finer. Particles are packed between large soil particles, causing a decrease in water permeability in a few years, and the underdrain pipe can no longer play its role, but in the soil to which the dust prevention method of the present invention is applied, this is the case. Therefore, the underdrain pipe can play its role over a long period of time.

  In addition, there are many fine soil particles that cause dust generation, and when the fine soil particles are packed to a close-packed state between large soil particles, the large soil particles are solidified and are not suitable for movement. However, such a phenomenon does not occur in the soil to which the soil dust generation prevention method of the present invention is applied, so that a ground state suitable for exercise can be maintained for a long period of time.

  In addition, in order to deal with wear, cracks, collapse, etc. of soil particles due to friction between shoes and sand caused by this, it is desirable to spray a dilute solution of the above-mentioned treatment liquid once a year at an appropriate place.

  On the other hand, the above describes the case where the soil dust prevention method of the present invention is applied to soil such as ground that has already been completed, but the object to which the soil dust prevention method of the present invention is applied is Without being limited to this, for the soil before lamination on the ground, etc., the soil is first refined as necessary, and the treatment agent configured as described above is sprayed on the soil, as necessary After drying, it is possible to obtain a soil that has been subjected to dust generation prevention treatment by further finely pulverizing it, and to laminate this on the ground, etc. By doing so, it is possible to effectively prevent dust generation on the ground or the like even in rainy weather or immediately after raining.

  When preparing soil that has been subjected to dust prevention treatment in advance as described above, it is preferable to use a spiral band stirrer from the standpoint of mixing, but if it can mix heavy particles, for example, A kneader or the like, or a mixer for preparing ready-mixed concrete can also be used, and an existing ready-made plant can be used as it is.

  Moreover, as an apparatus for drying employed as necessary, an internal heating type single-cylinder rotary kiln system is preferable from the viewpoint of mass processing and economy, but various other dryers can also be used.

  Hereinafter, the present invention will be described in more detail with reference to examples.

  A treating agent composed of the components shown in Table 1 below was prepared.

実施例１、２及び比較例１
対象土としては一般によく用いられる荒木田土、赤土（ローム土）の各々単体及び混合品を使用し、各対象土とも含水量を12重量％に調整した後、この対象土を表２の配合に従い処理を施した。

Examples 1 and 2 and Comparative Example 1
As target soil, Arakida soil and red soil (loam soil), which are commonly used, are used alone and mixed, and after adjusting the water content to 12% by weight for each target soil, the target soil is mixed according to the composition in Table 2. Treated.

処理方法は、各例とも対象土1,000gをガラスビーカー(1,000mL)に取り、処理剤を加えてガラス製撹拌棒で２分間良く混ぜ合わせた後、ポリエチレン製皿に2cm厚に敷のばし、自然乾燥させた。比較例１は、実質的に無処理と同様であるが、各実施例で処理剤添加後の撹拌により多少の砂同士の摩耗があり、これを同条件にするために水を加えた。乾燥後は、各処理土とも全量を400メッシュの金網を通してふるい、細粒化した。得られたそれぞれの対象土について、発塵性、透水性、保水性を測定した。

In each case, 1,000g of the target soil is taken into a glass beaker (1,000mL) in each case, and after adding the treatment agent and mixing well with a glass stir bar for 2 minutes, spread it 2cm thick on a polyethylene dish, Dried. Comparative Example 1 was substantially the same as untreated, but in each Example, there was some abrasion between the sands due to stirring after the addition of the treatment agent, and water was added to make this the same condition. After drying, the entire amount of each treated soil was sieved through a 400-mesh wire mesh and refined. About each obtained target soil, dustiness, water permeability, and water retention were measured.

(Dust generation test-1)
Place 2500 g of the target soil on the wooden container 1 flatly as shown in FIG. 1, and at a distance of 1 m from the open part 3 of the container and the blade at an angle of 20 degrees from the horizontal plane as shown in FIG. The set electric fan 4 was installed. The wind speed of the electric fan was adjusted to a wind speed of 12 m / sec while measuring with an anemometer 5 and left for 10 minutes as it was, and then the amount of residual soil was measured. The results are shown in Table 3.

尚、試験中の対象土の挙動としては、時間の経過につれ側面開口部の土が除々に奥壁部に押しやられ、終了時には底面の奥半分近くまで全量が移動していた。この間、実施例１−１〜実施例２−３の対象土については、目視での発塵は観察されなかったが、一方、比較例１−１〜１−３の対象土では、扇風機の稼動と同時に大量の発塵を程し、終了時はほとんど観察されなかった。これは発塵微細粒子量が10分間でほとんど飛んでしまった為である。又、試験中、全対象土とも表層部の土は容器内で風により常に移動し、約10 mm程度舞い上っていた。
(発塵性試験−その２)
図３に示すような装置を使用して発塵の程度を測定した。即ち、アクリル製の二分割式球形容器６内に資料としての対象土７を５０g入れ、吹出しノズル８を取り付けた上蓋６’を取り付け、吹出しノズル８を、弁９及び圧力計１０を介して圧力タンク１１に接続し、圧力タンク１１内の圧力をポンプ１２により２kg／ｃｍ^２に設定した。そして、弁９を一気に開放して圧力タンク１１内の圧力を１kg／ｃｍ^２にまで低下させ、二分割式球形容器６内の浮遊粉塵を散乱光式デジタル粉塵計１３を用いて計測した。計測は、吹出し後の浮遊粉塵の相対濃度（CPM = count per minutes）を、１分間隔で合計５回測定した。尚、資料としての対象土７としては実施例１−３、同２−３及び比較例１−３のものを使用した。結果を表４に示す。

As the behavior of the target soil during the test, the soil at the side opening was gradually pushed to the back wall as time passed, and at the end, the entire amount moved to near the back half of the bottom. During this time, no visual dust generation was observed for the target soils of Examples 1-1 to 2-3, while the fans were operated in the target soils of Comparative Examples 1-1 to 1-3. At the same time, a large amount of dust was released and was hardly observed at the end. This is because the amount of fine dust particles almost flew in 10 minutes. During the test, the surface soil of all the target soils was always moved by the wind in the container and soared about 10 mm.
(Dust generation test-2)
The degree of dust generation was measured using an apparatus as shown in FIG. That is, 50 g of target soil 7 as a material is placed in an acrylic two-part spherical container 6, an upper lid 6 ′ with a blowing nozzle 8 is attached, and the blowing nozzle 8 is pressurized through a valve 9 and a pressure gauge 10. The tank 11 was connected, and the pressure in the pressure tank 11 was set to ² kg / cm ² by the pump 12. Then, the valve 9 was opened at a stroke to reduce the pressure in the pressure tank 11 to 1 kg / cm ² , and the suspended dust in the two-part spherical container 6 was measured using the scattered light digital dust meter 13. For the measurement, the relative concentration (CPM = count per minutes) of the suspended dust after blowing was measured 5 times at intervals of 1 minute. In addition, the thing of Example 1-3, the same 2-3, and the comparative example 1-3 was used as the object soil 7 as a data. The results are shown in Table 4.

尚、一般に相対濃度が３００CPMを超えると目視による発塵現象が観察されるといわれる。
（透水性試験）
底部に直径5mmの排水孔を20個設けた内径70mm、高さ200mmの透明プラスチック製円筒容器を９本用意した。この各内底部にポリエチレン製不織布を内径に合わせて張り置き、筒内に実施例１−１〜実施例２−３の対象土及び比較例１−１〜１−３の対象土を同一の充填条件実現のために各lOOgずつ投入し、その都度、計９本の円筒を高さ10 cmより底部を机上に計30回打撃し、計500g充填した。９本の円筒の各々に水300mLを投入し、排水が円筒管底部より抜けきる時間を測定した。結果を表５に示す。

In general, it is said that a visual dust generation phenomenon is observed when the relative concentration exceeds 300 CPM.
(Water permeability test)
Nine transparent plastic cylindrical containers with an inner diameter of 70 mm and a height of 200 mm with 20 drain holes with a diameter of 5 mm provided at the bottom were prepared. A polyethylene non-woven fabric is stretched in accordance with the inner diameter of each inner bottom, and the target soil of Example 1-1 to Example 2-3 and the target soil of Comparative Examples 1-1 to 1-3 are filled in the cylinder in the same manner. In order to realize the conditions, each lOOg was introduced, and each time, a total of 9 cylinders were hit 30 times a total of 10 cm in height from the bottom on a desk, and a total of 500 g was filled. Each of the nine cylinders was charged with 300 mL of water, and the time for drainage to drain from the bottom of the cylindrical tube was measured. The results are shown in Table 5.

表５が示すように、実施例１−１〜実施例２−３の対象土の透水性は、比較例１−１〜１−３の対象土のそれに較べ大幅に改良されていることがわかる。
(保水性試験)
透水性試験終了後の各対象土が充填された円筒容器を、そのまま保水性試験に利用し、排水終了後の円筒内の試料土の乾燥性を測定した。各円筒容器の重量は何れも含まれていた水の蒸発により除々に減量し、最後は乾燥土重量と容器の合計重量になるので、その間の時間を測定した。結果を表６に示す。

As Table 5 shows, it turns out that the water permeability of the target soil of Example 1-1 to Example 2-3 is significantly improved compared to that of the target soil of Comparative Examples 1-1 to 1-3. .
(Water retention test)
The cylindrical container filled with each target soil after completion of the water permeability test was directly used for the water retention test, and the drying property of the sample soil in the cylinder after completion of drainage was measured. The weight of each cylindrical container was gradually reduced by evaporation of the water contained therein, and finally the dry soil weight and the total weight of the container were reached, so the time between them was measured. The results are shown in Table 6.

表６が示すように、実施例１−１〜実施例２−３の対象土は比較例１−１〜１−３の対象土の平均約７倍ほど保水性が高まっている。又、実施例１−１〜実施例２−３の対象土と比較例１−１〜１−３の対象土の見掛上の容量比は、同重量の対象土で10:8であり、処理土が多量の空隙を有することがわかる。

As Table 6 shows, the target soil of Example 1-1 to Example 2-3 has an increased water retention by about 7 times on average than the target soil of Comparative Examples 1-1 to 1-3. Moreover, the apparent capacity ratio of the target soil of Example 1-1 to Example 2-3 and the target soil of Comparative Examples 1-1 to 1-3 is 10: 8 for the target soil of the same weight, It can be seen that the treated soil has a lot of voids.

  Furthermore, in order to compare the wear resistance of the target soil of Example 1-1 to Example 2-3 and the target soil of Comparative Examples 1-1 to 1-3, the following test was performed. That is, 300 g of the target soil of Comparative Example 1-1 was put into a ceramic rotating container (1,000 mL) of a small laboratory ball mill and operated at 60 rpm for 30 minutes, and then the fine top particles due to wear were measured. For this, take the whole amount into a beaker, add water to make 2OOOmL, stir well with a glass rod, leave it for 10 seconds, remove the supernatant liquid containing fine soil particles floating in water, This was repeated several times until the supernatant became clear. The remaining soil was dried and its weight was measured. In addition, the residual soil weight by the same method of the target soil before the mill container was charged was 258 g. Next, a similar test was performed on the target soil of Example 1-1. Table 7 shows the measured values of the above tests.

表７が示すように、実施例１−１の対象土はほとんど摩耗せず（摩耗率1.3%）、これに対して比較例１−１の対象土は明らかに高摩耗率（摩耗率16%）であることがわかる。これは、実施例の対象土では発塵処理によりグランド上での運動による砂の耐摩耗が向上し、新たな発塵微細土粒子の生成を抑制できることを表している。

As Table 7 shows, the target soil of Example 1-1 hardly wears (wear rate 1.3%), whereas the target soil of Comparative Example 1-1 clearly has a high wear rate (wear rate 16%). )It can be seen that it is. This indicates that the target soil of the example improves the abrasion resistance of sand due to the movement on the ground by the dust generation treatment, and can suppress the generation of new dust generation fine soil particles.

  Furthermore, the following test was conducted in order to see the secular change of the treated soil under natural conditions. That is, a polyethylene non-woven fabric was laid on the bottom of a plastic container (300 × 300 × 100 mm) having 50 drain holes (diameter 8 mm) on the bottom, and two of these were prepared. In each of these containers, 3,000 g of the treated soil of Example 1-1 and the treated soil of Example 2-1 are placed and rolled with a leveling iron for 10 months (January to October). I left it alone. During this time, the surface (depth I O mm) was loosened with a gold brush every 7 days, and then the surface was rubbed strongly (1 minute) while being smoothed with a small wooden trowel. In addition, a container was installed on the roof of a three-story building in order to prevent mixing of dusting soil flying from the surrounding air into the test container. The sample soil was measured for dust generation, water permeability and water retention. The results are shown in Table 8.

表８が示すように、前記表3、4、5に示した結果と比べ、各性能とも特に格段の低下を招いていないと判断された。

As shown in Table 8, it was determined that the performance was not particularly reduced compared to the results shown in Tables 3, 4, and 5.

Example 3
(Actual ground processing)
The red clay ground about 500 meters ² and a depth of 50mm about tillage by tractor, a dust inhibitor solution vinyl acetate-ethylene copolymer emulsion system was sprayed so that the square meter per 3L in the same concentration as in the above-described embodiment Then mixed and cultivated again to promote drying. After being left for 24 hours, multiple rotation pressures were applied with a roller, and the ground was prepared so that it could be used as a ground. This soil was collected and measured for dust generation, water permeability and water retention. The results are shown in Table 9.

表９が示すように、上記実施例と比較して各性能が若干低下していたが、比較例のそれと較べれば無視できる程度の値である。

As Table 9 shows, each performance was slightly degraded as compared with the above example, but it is a negligible value compared with that of the comparative example.

  In Example 3, in order to regenerate the culvert pipe that could not be drained, the upper layer of the culvert pipe was dug up to a width of 800 mm and a depth of 250 mm, and this excavated soil was mixed using a left pipe mixer. Dust prevention treatment was performed on site, and this treated dry soil was backfilled. As a result, many rain puddles that were conventionally scattered on the ground after heavy rain for about two days have disappeared in a few hours after the same rain after treatment. This is the result of the soil surface permeability of the ground surface layer of 50 mm thickness being improved by the above-described treatment, and rainwater circulating in the formation and collecting in the underdrain pipe.

  In actual sites, construction may be impossible due to rainy weather. Therefore, as shown below, in a place other than the actual site such as a factory, soil that has been dust-prevented is manufactured in advance, and this is transported to the site and then spread and crushed to reduce dust generation. At the same time, water permeability and water retention can be secured.

Example 4
270 kg of red clay was added to a spiral band stirrer having a capacity of 200 L and stirred, and a treatment agent having the same concentration (21 kg) as in Example was added and stirred for 3 minutes. The dried product was sieved and the same performance measurement as in the example was performed. The results are shown in Table 10.

表１０が示すように、あらかじめ工場等の実際の現場以外の場所において、発塵防止処理を施した土壌を製造しても、十分に良好な諸性能を有する製品が生産可能であることが判明した。

As Table 10 shows, it was found that products with sufficiently good performance could be produced even if the dust-prevented soil was produced in a place other than the actual site such as a factory in advance. did.

  As is clear from the above results, by applying the soil dust prevention method of the present invention, dust-generating fine soil particles that adversely affect health and the environment can be significantly reduced. Compared with the soil to which the method for preventing dust generation of the soil of the invention is not applied, it is possible to dramatically improve the water permeability and water retention and to provide the optimum soil as the ground soil.

  Also, the construction for applying the soil dust prevention method of the present invention can be easily performed at the site, and even if this construction is impossible due to the influence of the weather, the soil that has been subjected to the dust prevention treatment in advance is used. It can also be manufactured and provided to the site.

Explanatory drawing on wooden containers for measuring soil dust generation Fig. 1 Arrangement of wooden container and fan with soil spread Device layout for measuring the degree of dust generation

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wooden container 2 Sample soil 3 Sample soil-containing wooden container 4 Fan 5 Anemometer 6 Spherical container 7 Target soil 8 Outlet nozzle 9 Valve 10 Pressure gauge 11 Pressure tank 12 Pump 13 Scattered light type digital dust meter

Claims (4)

A method for preventing soil dusting, comprising: spraying a treatment agent containing a resin component and water on soil, and then refining the soil. The soil dust prevention method according to claim 1, wherein the resin component is at least one of an acrylate resin, a vinyl acetate resin, a urethane resin, or a copolymer thereof. A soil subjected to dust generation prevention treatment, characterized in that the soil is treated with a treatment agent containing a resin component and water and is finely divided. The soil subjected to dust generation prevention treatment according to claim 3, wherein the resin component is at least one of acrylic ester resin, vinyl acetate resin, urethane resin, or a copolymer thereof.

Images