JP5364123B2 - Asbestos processing method - Google Patents
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- JP5364123B2 JP5364123B2 JP2011105808A JP2011105808A JP5364123B2 JP 5364123 B2 JP5364123 B2 JP 5364123B2 JP 2011105808 A JP2011105808 A JP 2011105808A JP 2011105808 A JP2011105808 A JP 2011105808A JP 5364123 B2 JP5364123 B2 JP 5364123B2
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Description
本発明は、アスベスト材を使用している建築物のアスベスト飛散防止処理および当該建築物の解体時のアスベスト材湿潤化によるアスベスト粉塵飛散抑制技術に係るアスベスト材処理方法に関する。 The present invention relates to engagement Ru asbestos material processing method to asbestos dust scattering reduction techniques asbestos material wetting during dismantling of asbestos scattering prevention treatment and the building of which building using asbestos materials.
アスベスト材の飛散防止対策として国土交通省は、除去、封じ込め、囲い込みの３法を認めている。除去が人々の生活空間からアスベストが無くなるという点で推奨されているが、現実には人体に影響を及ぼすアスベスト粉塵は目に見えない大きさであることから、アスベスト除去面への残存を心配し、一種の封じ込め剤を吹付け、残存したアスベスト材を固定、封じ込めるのが実際である。 The Ministry of Land, Infrastructure, Transport and Tourism recognizes three methods of removal, containment and enclosure as measures to prevent asbestos from scattering. Removal is recommended in terms of eliminating asbestos from people's living space, but in reality the asbestos dust that affects the human body is invisible, so there is concern about the asbestos removal surface remaining. In fact, a kind of containment agent is sprayed, and the remaining asbestos material is fixed and contained.
封じ込め工法にあっては従来、塗料の流用と思われる材料が氾濫し、経時変化による表面割れと再発じんおよび火災時の延焼が心配され、現在では、使用する薬剤の性能を確認し、施工を含めた管理体制を調べた後、登録する国土交通大臣認定制度があるが、除去の際の大量発じんに対応するための湿潤化剤について認定制度は未整備である。 In the containment method, the materials that are supposed to be used for paint have been flooded, and there are concerns about surface cracks and reoccurrence due to changes over time, and the spread of fire in the event of fire. After examining the management system included, there is a system for the certification of the Minister of Land, Infrastructure, Transport and Tourism, but the certification system for the wetting agent to deal with the large amount of dust generated during the removal is not yet established.
除去に際して使用する湿潤化剤は水以上の浸透性を求める声がある一方で、水以上のコストは掛けられず、封じ込め剤の希薄液を流用することが多く行われてきた。 While the wetting agent used for the removal has a demand for permeability higher than that of water, it does not cost more than water, and a dilute solution of containment agent has often been used.
上記のようなアスベスト材処理の現状および薬剤の使用状況の中、多くのアスベスト除去用薬剤は封じ込め剤の転用である。 Among the present status of asbestos material treatment and the usage status of chemicals as described above, many asbestos removal chemicals are diversions of containment agents.
浸透性に言及しているものとして特許文献１、２、３および４があり、浸透性能追求だけでなく封じ込め時、除去時の取り扱いを考慮してゲル化を積極的に進めるとした特許文献２、４、５および６がある。さらに最終の建築物解体時に再湿潤化をするとして特許文献４がある。 Patent Documents 1, 2, 3, and 4 refer to penetrability. Patent Document 2 that actively promotes gelation in consideration of handling at the time of containment and removal as well as pursuing penetration performance. There are 4, 5 and 6. Further, Patent Document 4 discloses re-wetting at the time of final building dismantling.
アスベスト対策を主眼においたものではないが、ポリアクリル酸を主剤として使用し、コンクリートのひび割れを止める薬剤が特許文献７、８、９および１０で提案されている。アスベスト材がセメントモルタルと一緒に吹付け材を構成していること、同様に建築ボードになっていることを考慮すればアスベスト処理剤としの応用可能性があるが、本用途については全く言及していない。 Although it does not focus on asbestos countermeasures, Patent Documents 7, 8, 9 and 10 propose agents that use polyacrylic acid as a main agent and stop cracks in concrete. Considering that asbestos material forms a spraying material together with cement mortar, and that it is also a building board, it may be applied as an asbestos treatment agent. Not.
アスベスト材からのアスベスト繊維発じん抑制対策はアスベスト材の使用状況、アスベスト材経年変化状況、人への暴露機会などの検討によって適切な対策薬剤および施工を実施しなければならない。課題ごとの発じん抑制さらに最終の除去、建築物解体時の爆発的な発じん対策に適切な処理を可能にするアスベスト粉塵飛散抑制剤および処理方法が求められた。 Asbestos fiber dust suppression measures from asbestos materials must be implemented with appropriate countermeasures and construction by examining the use status of asbestos materials, asbestos material aging, exposure opportunities to people, etc. There has been a demand for an asbestos dust scattering inhibitor and a treatment method that enable appropriate treatment for dust suppression for each problem, final removal, and explosive dust generation measures at the time of building demolition.
本発明は、上記問題を解決することを課題としたものである。 An object of the present invention is to solve the above problems.
上記課題を解決するために、本発明では、アスベスト材内部に浸透して薬剤の（略）均一な浸透を進める界面活性剤および潮解性塩水溶液を１次処理液とし、建築物解体前の期間、表層安定化を進める１次処理液中の潮解性塩と架橋するゲル化剤水溶液を２次処理液として施工、発じん抑制を行う。また解体の直前にはアスベスト材に水を供給することで表面の余剰ゲル化剤が吸水、再湿潤化することで解体時の大量の発じんを抑制する。 In order to solve the above-described problems, in the present invention, a surfactant and a deliquescent salt aqueous solution that penetrates into the asbestos material and promotes (substantially) uniform penetration of the drug is used as a primary treatment liquid, and a period before the building is demolished In addition, an aqueous gelling agent solution that crosslinks with the deliquescent salt in the primary treatment liquid that promotes surface stabilization is applied as a secondary treatment liquid to suppress dust generation. In addition, by supplying water to the asbestos material immediately before dismantling, the surplus gelling agent on the surface absorbs water and re-wets, thereby suppressing a large amount of dust generation during dismantling.
本発明の一態様においては、アスベスト材の深部まで均一に浸透する界面活性剤及び潮解性塩の水溶液を１次処理液として該アスベスト材を湿潤化した後、該アスベスト材表面近傍の固化及び除去時の再湿潤化のためのゲル化剤水溶液を２次処理液として該アスベスト材表面へスプレーまたはコーティングすることを特徴としたアスベスト材処理方法として実現される。 In one aspect of the present invention, after wetting the asbestos material an aqueous solution of a surfactant and a deliquescent salt to uniformly penetrate deep asbestos material as the primary treatment solution, solidification of near the asbestos material surface and The asbestos material treatment method is characterized by spraying or coating the surface of the asbestos material with a gelling agent aqueous solution for re-wetting at the time of removal as a secondary treatment liquid.
本発明のまた別の一態様においては、上記アスベスト材処理方法であって、建築物解体前のアスベスト材除去時に再度水噴霧により、前記アスベスト材表面をゲル化、含水層を構成し、除去時の発じんを抑えることを特徴とするアスベスト材除去方法として実現される。 In yet another aspect of the present invention, the asbestos material treatment method described above, wherein the asbestos material surface is gelled again by water spraying at the time of removing the asbestos material before dismantling the building, constituting a water-containing layer, and at the time of removal Asbestos material removal method characterized by suppressing dust generation.
本発明のさらに別の一態様においては、上記潮解性塩水溶液がリチウム塩、硫酸マグネシウム、塩化マグネシウム、塩化カルシウムのいずれかひとつあるいは複数を溶解してなる。 In yet another embodiment of the present invention, the deliquescent salt aqueous solution is formed by dissolving one or more of lithium salt, magnesium sulfate, magnesium chloride, and calcium chloride.
本発明のまた別の一態様においては、上記アスベスト飛散防止剤における前記ゲル化剤水溶液がグルコマンナンおよび／またはポリアクリル酸ソーダを溶解してなることを特徴とする２次処理液として実現される。 In still another aspect of the present invention, the gelling agent aqueous solution in the asbestos scattering inhibitor is realized as a secondary treatment liquid characterized by dissolving glucomannan and / or sodium polyacrylate. .
本発明のさらに別の一態様においては、上記アスベスト材処理方法であって、１次処理液による湿潤化後、成分浸透、均一化時間を略３時間以上取ることを特徴とするアスベスト材処理方法として実現される。 In still another aspect of the present invention, the asbestos material treatment method described above is characterized in that after the wetting with the primary treatment liquid, the component permeation and homogenization time is approximately 3 hours or more. As realized.
本発明のまた別の一態様においては、上記アスベスト材処理方法であって２次処理液によるコーティング後、封じ込め処理完了建築物として使用し、当該建築物の解体前に水により再湿潤化を行い、アスベスト材除去を実施することを特徴とするアスベスト材処理方法として実現される。 In another aspect of the present invention, the asbestos material treatment method described above is used as a containment-completed building after coating with a secondary treatment liquid, and re-wet with water before dismantling the building. Asbestos material removal method is implemented as an asbestos material processing method.
結露防止目的でアスベスト材が使われることがあるように吹付けアスベスト材は空気層を抱えていることから断熱層を形成し、かつ表面の油汚れなどによって単なる水ではほとんど濡れないものが存在する。複雑形状、表面状態に対応するため、薬剤成分をアスベスト材深部に均一に送り込むためには界面活性剤の添加が必要である。 Sprayed asbestos material has an air layer so that asbestos material may be used for the purpose of preventing dew condensation, so there is a thing that forms a heat insulation layer, and there is something that hardly gets wet with mere water due to oil stains etc. on the surface . In order to deal with complex shapes and surface conditions, it is necessary to add a surfactant in order to uniformly send the drug component to the deep part of the asbestos material.
アスベスト繊維の発じんに直接影響を及ぼすアスベスト表面近傍ではセメントモルタルなど基材の経年劣化により、アスベストの固定能力が低下しているため、表面全体を覆い、ある種の薬剤によって塗膜を構成する発想の技術があった。アスベスト繊維が裸で表面に出ている状態のアスベスト材に対しケイ酸ソーダなどを主剤とする薬剤では繊維間の接着や固定を行うために必要なマグネシウムやカルシウムが不足した局所状態になる。 In the vicinity of the asbestos fiber that directly affects the generation of asbestos fibers, the fixing ability of asbestos is reduced due to aging of the base material such as cement mortar, so the entire surface is covered, and a coating film is formed with some kind of chemicals There was an idea technology. A drug mainly composed of sodium silicate or the like on the asbestos material in which the asbestos fibers are bare and appearing on the surface results in a local state where magnesium and calcium necessary for bonding and fixing the fibers are insufficient.
このような課題に対し、本発明では硫酸マグネシウムや塩化カルシウムなどの第２族の金属塩を添加して施工する。これら第２族の金属塩はその潮解性から、短時間に乾燥することなく、適度な湿潤状態をアスベスト材内部で実現し、薬剤成分の均一な移動を可能にする。この効果によって、アスベスト材表面はもとより、アスベスト材深部にも十分な第２族の金属を供給することが可能になる。 In order to deal with such problems, the present invention is applied by adding a Group 2 metal salt such as magnesium sulfate or calcium chloride. Due to their deliquescent nature, these Group 2 metal salts achieve a moderately moist state inside the asbestos material without drying in a short time, and enable uniform movement of the drug components. This effect makes it possible to supply sufficient Group 2 metal not only to the surface of the asbestos material but also to the deep portion of the asbestos material.
界面活性剤と潮解性塩類を含む１次処理液をアスベスト材に吹付けることにより、アスベスト材の湿潤化が完了する。アスベスト材の厚みを勘案して１次処理液の使用量を計算するが、アスベスト材の除去、解体工程では深部の湿潤状態を確認しながら除去を実施する。 Wetting of the asbestos material is completed by spraying the primary treatment liquid containing the surfactant and the deliquescent salt onto the asbestos material. The amount of primary treatment liquid used is calculated in consideration of the thickness of the asbestos material. In the asbestos material removal and disassembly process, the removal is carried out while confirming the wet state of the deep part.
アスベスト材除去までの時間が長い建築物や発じん抑制工事後、使用を続ける建築物にあっては１次処理液の使用後、均一化の時間を置いたのち、グルコマンナン、ポリアクリル酸ソーダ水溶液、ケイ酸ソーダ液などを表面に吹付け架橋、ゲル化を行う。 For buildings that take a long time to remove asbestos materials or for buildings that continue to be used after dust control work, after using the primary treatment solution, leave the time for homogenization, and then add glucomannan and sodium polyacrylate. Aqueous solution, sodium silicate solution, etc. are sprayed on the surface for crosslinking and gelation.
十分な乾燥後は２次処理液で構成された表面は塗料による塗膜同等の強度を有するため、人の無意識な接触による発じんを抑制する封じ込め状態を実現する。 After sufficient drying, the surface composed of the secondary treatment liquid has the same strength as a coating film made of a paint, and thus realizes a containment state that suppresses dust generation caused by unintentional human contact.
２次処理液を施工したアスベスト材表面は１次処理液中の第２族の金属との架橋、全体のゲル化、乾燥後の固化により塗料による塗膜状構造となるが、建築物の解体前除去工事にあっては水供給により、余剰のゲル化剤が吸水、再ゲル化、再湿潤化することによって、除去時の発じんを大幅に抑制する。適正な吸水量の計算、吸水により、１次処理液中の潮解性塩類が保湿効果を提供し、工事の長期化にも対応できる湿潤化状態を約束する。 The surface of the asbestos material on which the secondary treatment solution has been applied becomes a coating-like structure with paint by cross-linking with the group 2 metal in the primary treatment solution, gelation of the whole, and solidification after drying. In the pre-removal work, the excess gelling agent absorbs water, re-gelates, and re-wettes by supplying water, thereby greatly suppressing dust generation during removal. By calculating the appropriate amount of water absorption and water absorption, the deliquescent salts in the primary treatment liquid provide a moisturizing effect and promises a moistened state that can cope with prolonged construction.
以下、本発明の一実施形態について説明する。 Hereinafter, an embodiment of the present invention will be described.
本発明では、アスベスト材内部に浸透して薬剤の（略）均一な浸透を進める界面活性剤および潮解性塩水溶液を１次処理液とし、建築物解体前の期間、表層安定化を進める１次処理液中の潮解性塩と架橋するゲル化剤水溶液を２次処理液として施工、発じん抑制を行う。また解体の直前にはアスベスト材に水を供給することで表面の余剰ゲル化剤が吸水、再湿潤化することで解体時の大量の発じんを抑制する。 In the present invention, a surfactant and a deliquescent salt aqueous solution that penetrates into the asbestos material and promotes (substantially) uniform penetration of the drug are used as the primary treatment solution, and the primary layer that promotes surface stabilization during the period before the building dismantling. A gelling agent aqueous solution that crosslinks with the deliquescent salt in the treatment liquid is used as a secondary treatment liquid to suppress dust generation. In addition, by supplying water to the asbestos material immediately before dismantling, the surplus gelling agent on the surface absorbs water and re-wets, thereby suppressing a large amount of dust generation during dismantling.
アスベスト材はセメントモルタルを基材としてアスベストを固定、空気層を形成し、耐火、防火、防音や結露防止の目的で施工した吹付けアスベスト材、さらにロックウールを混入した同用途材、種々のボードとしてプレス等により加工したボード材など種々の形状が存在し、経年変化による基材の劣化により、発じんの可能性が高まったもの、表面を塗料などで覆った結果、通常のアスベスト材と比して吸水性能が全く異なるアスベスト材などがあり、その存在状態によって適当なアスベスト材処理には異なる薬剤や工法が必要とされた。 Asbestos materials are cement mortar as a base material, fixing asbestos, forming an air layer, sprayed asbestos materials constructed for the purpose of fireproofing, fireproofing, soundproofing and dew condensation, as well as materials for the same use mixed with rock wool, various boards There are various shapes such as board materials processed by press, etc., and the possibility of dust generation increased due to deterioration of the base material due to secular change, and as a result of covering the surface with paint etc., compared with normal asbestos material Thus, there are asbestos materials with completely different water absorption performance, and different chemicals and construction methods are required for proper asbestos material treatment depending on the existence state.
このようなアスベスト材処理の現場では十分な経験を持った熟練者が処理方法を検討するが同一の建物内でも異なる対策が求められ、作業は煩雑化、長期化が必須となっていた。 At such an asbestos material treatment site, an expert who has sufficient experience examines the treatment method, but different countermeasures are required even within the same building, and the work must be complicated and prolonged.
多くのアスベスト材の存在状況を検討し、幅広く同一の調合で使用できる薬剤を用いたアスベスト材処理方法を目指した結果、完成したのが本発明のアスベスト材処理方法である。 Consider the presence status of a number of asbestos material, widely identical results aimed asbestos material processing method using the agent that can be used in the formulation, the finished of it is asbestos material processing method of the present invention.
結露防止目的でアスベスト材が使われることがあるように吹付けアスベスト材は空気層を抱えていることから断熱層を形成し、かつ表面の油汚れなどによって単なる水ではほとんど濡れないものが存在する。複雑形状、表面状態に対応するため、薬剤成分をアスベスト材深部に均一に送り込むためには界面活性剤の添加が必要である。 Sprayed asbestos material has an air layer so that asbestos material may be used for the purpose of preventing dew condensation, so there is a thing that forms a heat insulation layer, and there is something that hardly gets wet with mere water due to oil stains etc. on the surface . In order to deal with complex shapes and surface conditions, it is necessary to add a surfactant in order to uniformly send the drug component to the deep part of the asbestos material.
アスベスト繊維の発じんに直接影響を及ぼすアスベスト表面近傍ではセメントモルタルなど基材の経年劣化により、アスベストの固定能力が低下しているため、表面全体を覆い、ある種の薬剤によって塗膜を構成する発想の技術があった。アスベスト繊維が裸で表面に出ている状態のアスベスト材に対しケイ酸ソーダなどを主剤とする薬剤では繊維間の接着や固定を行うために必要なマグネシウムやカルシウムが不足した局所状態になる。 In the vicinity of the asbestos fiber that directly affects the generation of asbestos fibers, the fixing ability of asbestos is reduced due to aging of the base material such as cement mortar, so the entire surface is covered, and a coating film is formed with some kind of chemicals There was an idea technology. A drug mainly composed of sodium silicate or the like on the asbestos material in which the asbestos fibers are bare and appearing on the surface results in a local state where magnesium and calcium necessary for bonding and fixing the fibers are insufficient.
このような課題に対し、本発明では硫酸マグネシウムや塩化カルシウムなどの第２族の金属塩を添加して施工する。これら第２族の金属塩はその潮解性から、短時間に乾燥することなく、適度な湿潤状態をアスベスト材内部で実現し、薬剤成分の均一な移動を可能にする。この効果によって、アスベスト材表面はもとより、アスベスト材深部にも十分な第２族の金属を供給することが可能になる。 In order to deal with such problems, the present invention is applied by adding a Group 2 metal salt such as magnesium sulfate or calcium chloride. Due to their deliquescent nature, these Group 2 metal salts achieve a moderately moist state inside the asbestos material without drying in a short time, and enable uniform movement of the drug components. This effect makes it possible to supply sufficient Group 2 metal not only to the surface of the asbestos material but also to the deep portion of the asbestos material.
界面活性剤と潮解性塩類を含む１次処理液をアスベスト材に吹付けることにより、アスベスト材の湿潤化が完了する。アスベスト材の厚みを勘案して１次処理液の使用量を計算するが、アスベスト材の除去、解体工程では深部の湿潤状態を確認しながら除去を実施する。 Wetting of the asbestos material is completed by spraying the primary treatment liquid containing the surfactant and the deliquescent salt onto the asbestos material. The amount of primary treatment liquid used is calculated in consideration of the thickness of the asbestos material. In the asbestos material removal and disassembly process, the removal is carried out while confirming the wet state of the deep part.
アスベスト材除去までの時間が長い建築物や発じん抑制工事後、使用を続ける建築物にあっては１次処理液の使用後、均一化の時間を置いたのち、グルコマンナン、ポリアクリル酸ソーダ水溶液、ケイ酸ソーダ液などを表面に吹付け架橋、ゲル化を行う。 For buildings that take a long time to remove asbestos materials or for buildings that continue to be used after dust control work, after using the primary treatment solution, leave the time for homogenization, and then add glucomannan and sodium polyacrylate. Aqueous solution , sodium silicate solution , etc. are sprayed on the surface for crosslinking and gelation.
十分な乾燥後は２次処理液で構成された表面は塗料による塗膜同等の強度を有するため、人の無意識な接触による発じんを抑制する封じ込め状態を実現する。 After sufficient drying, the surface composed of the secondary treatment liquid has the same strength as a coating film made of a paint, and thus realizes a containment state that suppresses dust generation caused by unintentional human contact.
２次処理液を施工したアスベスト材表面は１次処理液中のアルカリ土類金属との架橋、全体のゲル化、乾燥後の固化により塗料による塗膜状構造となるが、建築物の解体前除去工事にあっては水供給により、余剰のゲル化剤が吸水、再ゲル化、再湿潤化することによって、除去時の発じんを大幅に抑制する。適正な吸水量の計算、吸水により、１次処理液中の潮解性塩類が保湿効果を提供し、工事の長期化にも対応できる湿潤化状態を約束する。 The surface of the asbestos material on which the secondary treatment solution has been applied has a coating-like structure with paint due to cross-linking with the alkaline earth metal in the primary treatment solution, gelation of the whole, and solidification after drying, but before dismantling the building In the removal work, by supplying water, excess gelling agent absorbs water, regels, and rewets, greatly reducing dust generation during removal. By calculating the appropriate amount of water absorption and water absorption, the deliquescent salts in the primary treatment liquid provide a moisturizing effect and promises a moistened state that can cope with prolonged construction.
１次処理液とアスベスト材の接触、アスベスト材深部への浸透が全工事に重要な結果を与えるので１次処理液施工後は十分な反応時間を置く。１次処理液を一度に供給して、アスベスト材の重量が大きくなりすぎると、天井材の脱落などが起きることがあるので、施工は２回以上に分けて行う。２次処理液施工までは３時間以上の間隔を置く。 Since the contact between the primary treatment liquid and the asbestos material and the penetration into the deep part of the asbestos material give important results to the entire construction, allow sufficient reaction time after the construction of the primary treatment liquid. If the primary treatment liquid is supplied at once and the weight of the asbestos material becomes too large, the ceiling material may fall off, so the construction is performed in two or more steps. Leave an interval of 3 hours or more before applying the secondary treatment solution.
１次処理液として塩化カルシウム５％水溶液を調製し、さらに界面活性剤を添加した。 A 5% calcium chloride aqueous solution was prepared as a primary treatment liquid, and a surfactant was further added.
界面活性剤は特に塩化カルシウムなど他の成分と反応、沈殿等起こすものでなければ問題ないが、施工に使用するスプレーや噴霧機によっては大量の泡を発生するので注意を要する。泡でアスベスト材全体を覆うことは発じんを抑え、安全な工事を時手右舷すると考えられるが、内部への浸透効果については問題があり、表層で泡の破裂と乾燥が起これば薬剤の内部供給に問題となる。 The surfactant is not particularly problematic unless it reacts with other components such as calcium chloride, precipitates, etc. However, depending on the spray or sprayer used in the construction, a large amount of foam is generated. Covering the entire asbestos material with foam is considered to suppress dust generation and to carry out safe construction at times, but there is a problem with the penetration into the interior, and if the foam bursts and dries on the surface, It becomes a problem in internal supply.
２次処理液としてグルコマンナン０．３％水溶液を調製使用した。 A glucomannan 0.3% aqueous solution was prepared and used as a secondary treatment solution.
本発明によれば、アスベスト材内部に浸透して薬剤の均一な浸透を進める界面活性剤および潮解性塩水溶液を１次処理液とし、建築物解体前の期間、表層安定化を進める１次処理液中の潮解性塩と架橋するゲル化剤水溶液を２次処理液として施工、発じん抑制を行う。また解体の直前にはアスベスト材に水を供給することで表面の余剰ゲル化剤が吸水、再湿潤化することで解体時の大量の発じんを抑制する。このようにして、課題ごとの発じん抑制さらに最終の除去、建築物解体時の爆発的な発じん対策に適切な処理が可能となる。 According to the present invention, a surfactant and a deliquescent salt aqueous solution that penetrates into the asbestos material to promote uniform penetration of the drug are used as a primary treatment solution, and a primary treatment that promotes surface stabilization during the period before building dismantling. A gelling agent aqueous solution that crosslinks with the deliquescent salt in the liquid is used as a secondary treatment liquid to suppress dust generation. In addition, by supplying water to the asbestos material immediately before dismantling, the surplus gelling agent on the surface absorbs water and re-wets, thereby suppressing a large amount of dust generation during dismantling. In this way, it is possible to perform appropriate processing for suppressing dust generation for each problem, final removal, and explosive dust countermeasures at the time of building demolition.
したがって、本発明は、建設業をはじめとする各産業において、大いなる利用可能性が存在する。 Therefore, the present invention has great applicability in each industry including the construction industry.
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