JPH0468273B2 - - Google Patents
Info
- Publication number
- JPH0468273B2 JPH0468273B2 JP29634887A JP29634887A JPH0468273B2 JP H0468273 B2 JPH0468273 B2 JP H0468273B2 JP 29634887 A JP29634887 A JP 29634887A JP 29634887 A JP29634887 A JP 29634887A JP H0468273 B2 JPH0468273 B2 JP H0468273B2
- Authority
- JP
- Japan
- Prior art keywords
- asbestos
- coating layer
- curing liquid
- solidifying
- injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000010425 asbestos Substances 0.000 claims description 21
- 229910052895 riebeckite Inorganic materials 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 239000011247 coating layer Substances 0.000 claims description 11
- 239000002344 surface layer Substances 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 5
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 239000000057 synthetic resin Substances 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 238000004079 fireproofing Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 239000000835 fiber Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 5
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 206010040844 Skin exfoliation Diseases 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Aftertreatments Of Artificial And Natural Stones (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、石綿を含む材料により建築物の
壁、天井を被覆してある個所に対し、その石綿繊
維の飛散防止を計る技術に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a technique for preventing asbestos fibers from scattering in areas where walls and ceilings of buildings are coated with materials containing asbestos.
（従来の技術）
従来、石綿を含む被覆材が、耐火、断熱、吸
音、吸湿を目的として施工されていた。しかし、
この石綿の持つ発ガン性により、その使用はもと
より既に施工された個所を如何に処理するかが問
題になつている。(Prior Art) Conventionally, covering materials containing asbestos have been installed for the purposes of fireproofing, heat insulation, sound absorption, and moisture absorption. but,
Due to the carcinogenic properties of asbestos, not only its use but also how to dispose of areas where asbestos has already been constructed has become a problem.
処理方法を大別すると固化方法と除去方法に分
かれるが、本発明では固化方法に関するものであ
る。従来における固化方法は、未だ確立されたも
のはなく、商品として、仏国のセルピー社より市
販されている「サーピフレツクス」を知る程度で
ある。セルピー社の方法は、ペースト状ビニルア
クリル樹脂を石綿被覆部に塗布して固化しようと
するものである。 Treatment methods can be roughly divided into solidification methods and removal methods, and the present invention relates to solidification methods. There is no conventional solidification method that has been established, and the only known product is "Serpiflex", which is commercially available from Serpy in France. Selpy's method involves applying a paste vinyl acrylic resin to the asbestos-coated area and allowing it to harden.
（発明が解決しようとする問題点）
一般に石綿を含んだ被覆層は、壁、天井面に対
して露出した状態で施工されていた。また、その
厚みは通常25mm以上と厚く、その接着力も弱いも
のであつた。(Problems to be Solved by the Invention) Generally, a coating layer containing asbestos is applied to walls and ceilings in an exposed state. In addition, the thickness was usually 25 mm or more, and the adhesive strength was weak.
従来の固化方法では、表面からの含浸に頼るも
ので、深部の下地まで浸透が達しない場合には剥
落の危険があるものであつた。また、石綿被覆層
の目的が耐火である場合、有機質のアクリル樹脂
を使用した場合、耐火性能が劣化することは裂け
られなかつた。 Conventional solidification methods rely on impregnation from the surface, and there is a risk of peeling if penetration does not reach the deep substrate. Further, when the purpose of the asbestos coating layer is fire resistance, when an organic acrylic resin is used, the fire resistance performance does not deteriorate or tear.
（目的）
この発明では、石綿被覆層を深部から確実に固
化させる方法を提供するとともに、火災時におい
ても耐火性能の維持できる方法を提供することに
ある。(Purpose) The present invention provides a method for reliably solidifying an asbestos coating layer from deep inside, and also provides a method for maintaining fire resistance even in the event of a fire.
（問題点を解決するための手段）
上記の目的を達成する為に、硬化液として一般
式M2Ｏ・xSiO2・aq（式中Ｍは周期律表第Ａ族
に属するアルカリ金属を表わし、ｘは2.0〜4.5の
正数、aqは水溶液を示す。）で表わされる水溶性
珪酸塩溶液と合成樹脂エマルシヨンおよび／また
は水溶性樹脂を主成分とする組成物を用意し、こ
の硬化液を１〜100個所／m2の割合で５〜50c.c.／
個所注入硬化させ、かつ、表層にもこの硬化液を
塗布し固化させるようにしている。(Means for solving the problem) In order to achieve the above object, a curing liquid of the general formula M 2 O x SiO 2 aq (where M represents an alkali metal belonging to Group A of the periodic table, x is a positive number from 2.0 to 4.5, and aq indicates an aqueous solution.) A composition containing a water-soluble silicate solution as a main component, a synthetic resin emulsion, and/or a water-soluble resin as the main components is prepared, and this curing liquid is 5-50c.c./at a rate of ~100 locations/ m2
The material is injected into spots and cured, and the hardening liquid is also applied to the surface layer and solidified.
硬化液自体としては、出願人が先に出願した特
開昭61−238860に示される組成物のうち、水溶性
珪酸塩の水溶液(A)と合成樹脂エマルシヨン(B)また
は／および水溶性樹脂(B)の組成比率が固形分比で
(A)：(B)＝10：１〜１：１にあるものが良い。 As the curing liquid itself, among the compositions shown in JP-A No. 61-238860, which was previously filed by the applicant, an aqueous solution of a water-soluble silicate (A) and a synthetic resin emulsion (B) or/and a water-soluble resin ( The composition ratio of B) is the solid content ratio.
(A):(B)=10:1 to 1:1 is good.
注入は、注射針状または先端が錐状で周面にノ
ズル孔を有する噴射管とタンクからの硬化液をポ
ンプを介して圧送するための接続ホースを有する
注入装置により、噴射管を石綿層の最深部まで挿
入することにより行われる。この注入装置には、
１個所当たりの硬化液の注入量を規定できる機
構、ないし、噴射管の根元（接続ホース側）には
天井面を施工する際の滴受け、注入量を確認する
流量計を付属させてあるのが良い。噴射管の径
は、１〜３mmにあるのが注入の容易さ、注入後の
仕上り等の点から良い。この径が１mm以下では硬
化液の通りも悪く、作業能率も悪くなる。また、
３mm以上では挿入抵抗が大きくなり、挿入跡が残
つてしまう。 Injection is carried out using an injection device that has an injection tube with a needle-shaped or conical tip and a nozzle hole on the periphery, and a connection hose for pumping the hardening liquid from the tank through the asbestos layer. This is done by inserting it to the deepest point. This injection device includes
There is a mechanism that allows you to specify the amount of curing liquid injected per location, and the base of the injection pipe (connection hose side) is equipped with a drip pan for when constructing the ceiling surface, and a flow meter to check the amount of injection. is good. The diameter of the injection pipe is preferably 1 to 3 mm from the viewpoint of ease of injection and finish after injection. If this diameter is less than 1 mm, the passage of the hardening liquid will be difficult and the work efficiency will be poor. Also,
If it is 3 mm or more, the insertion resistance will be large and an insertion mark will remain.
一方、注入固化と別に表面に硬化液を塗布する
が塗装方法としてはエアレススプレー、刷毛、ロ
ーラーにより行われる。中でも飛散の少ないエア
レススプレーによる方法が望ましい。塗布量は
0.3〜3.0Kg／m2塗り付けることにより表層部を固
化することができる。 On the other hand, a hardening liquid is applied to the surface separately from injection and hardening, and the painting method is by airless spray, brush, or roller. Among them, a method using airless spray is preferable because it causes less scattering. The amount of application is
The surface layer can be solidified by applying 0.3 to 3.0 kg/ m2 .
（作用）
この発明の方法によれば、石綿被覆層を深部よ
り下地への付着力を与えながら固化するとともに
表層を脆弱なものから強度のあるものに変える。(Function) According to the method of the present invention, the asbestos coating layer is solidified while giving adhesion to the base from the deep part, and the surface layer is changed from a brittle one to a strong one.
（実施例）
実施例 １
RC造の建築物の天井に15年前施工された厚さ
25mm石綿被覆層に対し、下記に示す組成からなる
硬化液を16個所／m2、10c.c.／個所の仕様により注
入施工した。更に、表層へは同じ硬化液をエアレ
ススプレーにより800g／m2塗布し、仕上げ塗料
として、珪酸質系のペイントを400g／m2エアレ
ススプレーを用い塗布した。これにより施工前室
内に0.07本／c.c.あつた浮遊アスベスト繊維が施工
後0.02本／c.c.となつた。(Example) Example 1 Thickness of the ceiling of an RC building constructed 15 years ago
A curing liquid having the composition shown below was injected into a 25 mm asbestos coating layer according to the specifications at 16 locations/m 2 and 10 c.c./location. Furthermore, 800 g/m 2 of the same curing liquid was applied to the surface layer using an airless spray, and 400 g/m 2 of a silicate paint was applied as a finishing paint using an airless spray. As a result, the number of floating asbestos fibers in the room before construction was 0.07 fibers/cc, but after construction the number was reduced to 0.02 fibers/cc.
硬化液の組成
水溶性珪酸塩溶液 ※１ 80重量部
合成樹脂エマルシヨン ※２ 18重量部
メチルセロソルブ ２重量部
（注）※１は日本化学工業(株)の商品名「Ｊ珪酸
ソーダ３号」を使用
※２はローム＆ハース社製の商品名
「AC604」を使用
実施例 ２
RC造の建築物の天井に13年前施工された厚さ
25mmの石綿被覆層に対し、下記に示す組成からな
る硬化液を全面に600g／m2、エアレススプレー
により塗布し、更に、注入装置により25個所／
m2、15c.c.／個所の仕様により施工した。これによ
り施工前室内に0.32本／c.c.あつた浮遊アスベスト
繊維が施工後0.04本／c.c.となつた。補修工事は最
後に結露防止塗料（菊水化学工業(株)製の「ケツロ
ナイン」）を1.0Kg／m2塗装し仕上げとした。Composition of hardening liquid Water-soluble silicate solution *1 80 parts by weight Synthetic resin emulsion *2 18 parts by weight Methyl cellosolve 2 parts by weight (Note) *1 is the product name of Nihon Kagaku Kogyo Co., Ltd.'s "J Sodium Silicate No. 3" Example 2 Used *2 is the product name "AC604" manufactured by Rohm & Haas. Example 2 Thickness installed on the ceiling of an RC building 13 years ago
For a 25 mm asbestos coating layer, apply 600 g/m 2 of a curing liquid having the composition shown below to the entire surface using an airless spray, and then apply it to 25 locations/m 2 using an injection device.
It was constructed according to the specifications of 15 m2 , 15 c.c./site. As a result, the number of floating asbestos fibers in the room before construction was 0.32 fibers/cc, but after construction the number was reduced to 0.04 fibers/cc. The repair work was finished with a coat of anti-condensation paint (Ketsuro Nine, manufactured by Kikusui Chemical Co., Ltd.) at a rate of 1.0 kg/ m2 .
硬化液の組成
水溶性珪酸塩溶液 ※３ 78重量部
合成樹脂エマルシヨン ※４ 17重量部
メタノール ５重量部
（注）※３は日本化学工業(株)製の商品名「2K
珪酸カリ」を使用
※４はヘキスト合成(株)製の商品名「モビニ
ール 975」を使用
実施例 ３
鉄骨構造の建築物の鉄骨に20年前施工された厚
さ60mmの石綿被覆層に対し、実施例１に使用した
硬化液を25個所／m2、30c.c.／個所注入し、更に１
Kg／m2エアレススプレーにより塗布した。これに
より施工前は非常に脆かつた石綿被覆層を固化す
ることができた。Composition of hardening liquid Water-soluble silicate solution *3 78 parts by weight Synthetic resin emulsion *4 17 parts by weight Methanol 5 parts by weight (Note) *3 is the product name "2K" manufactured by Nihon Kagaku Kogyo Co., Ltd.
Example 3 A 60mm thick asbestos coating layer was applied to the steel frame of a steel-framed building 20 years ago. The curing liquid used in Example 1 was injected at 25 locations/m 2 and 30 c.c./location, and
Kg/m 2 Applied by airless spray. This allowed the asbestos coating layer, which was extremely brittle before construction, to solidify.
（発明の効果）
この発明では、硬化液の浸透性、不燃性と施工
方法の組み合わせにより、石綿被覆層の深部から
下地への付着力を確保しながら、表層を固化させ
ることが可能となつた。従つて、石綿繊維の飛散
による害を著しく低下できる。(Effects of the invention) In this invention, by combining the permeability and nonflammability of the curing liquid with the construction method, it has become possible to solidify the surface layer while ensuring adhesion from the deep part of the asbestos coating layer to the base. . Therefore, the harm caused by the scattering of asbestos fibers can be significantly reduced.
Claims (1)
被覆層を固化するに当たり、一般式M2Ｏ・
xSiO2・aq（式中Ｍは周期律表第Ａ族に属する
アルカリ金属を表わし、ｘは2.0〜4.5の正数、aq
は水溶液を示す。）で表わされる水溶性珪酸塩溶
液と合成樹脂エマルシヨンおよび／または水溶性
樹脂を主成分とする硬化液を１〜100個所／m2の
割合で５〜50c.c.／個所注入することおよび表層に
湿潤重量で0.3〜3.0Kg／m2塗布することを特徴と
する石綿被覆層の固化方法。1. When solidifying a coating layer containing asbestos for the purpose of fireproofing, heat insulation, sound absorption, etc., the general formula M 2 O.
xSiO 2・aq (in the formula, M represents an alkali metal belonging to Group A of the periodic table, x is a positive number from 2.0 to 4.5, aq
indicates an aqueous solution. ), a synthetic resin emulsion and/or a curing liquid mainly composed of a water-soluble resin, are injected into 5 to 50 c.c./site at a rate of 1 to 100 sites/ m2 , and the surface layer is A method for solidifying an asbestos coating layer, which comprises applying a wet weight of 0.3 to 3.0 Kg/m 2 to a surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29634887A JPH01138184A (en) | 1987-11-25 | 1987-11-25 | Solidification of asbestos coated layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29634887A JPH01138184A (en) | 1987-11-25 | 1987-11-25 | Solidification of asbestos coated layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01138184A JPH01138184A (en) | 1989-05-31 |
| JPH0468273B2 true JPH0468273B2 (en) | 1992-10-30 |
Family
ID=17832388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29634887A Granted JPH01138184A (en) | 1987-11-25 | 1987-11-25 | Solidification of asbestos coated layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01138184A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2625449B2 (en) * | 1987-11-27 | 1997-07-02 | ヤヨイ化学工業株式会社 | Method for separating asbestos layer sprayed on a building and apparatus for solidifying and separating asbestos layer provided with multiple nozzles used for the method |
| JPH0460054A (en) * | 1990-06-26 | 1992-02-26 | Kikusui Kagaku Kogyo Kk | Sealing for asbestos-covered layer and decoration finishing material |
| JP2007146566A (en) * | 2005-11-30 | 2007-06-14 | Kikusui Chemical Industries Co Ltd | Decorating method |
| JP2007161973A (en) * | 2005-12-09 | 2007-06-28 | Chitoshi Jinno | Coloring photocatalyst, method for producing solidifying liquid for asbestos scattering-proofing use and method for using the liquid |
| JP4950501B2 (en) * | 2006-02-07 | 2012-06-13 | 株式会社ナチュル | Asbestos solidification method |
| JP5273912B2 (en) * | 2006-04-20 | 2013-08-28 | ダイソーケミカル株式会社 | Dust scattering prevention treatment agent and treatment method |
-
1987
- 1987-11-25 JP JP29634887A patent/JPH01138184A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01138184A (en) | 1989-05-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |