JPH07102874B2 - Anticorrosion lining method for concrete structure - Google Patents
Anticorrosion lining method for concrete structureInfo
- Publication number
- JPH07102874B2 JPH07102874B2 JP61144083A JP14408386A JPH07102874B2 JP H07102874 B2 JPH07102874 B2 JP H07102874B2 JP 61144083 A JP61144083 A JP 61144083A JP 14408386 A JP14408386 A JP 14408386A JP H07102874 B2 JPH07102874 B2 JP H07102874B2
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- synthetic resin
- water
- resin
- corrosion
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 21
- 239000000057 synthetic resin Substances 0.000 claims description 21
- 230000007797 corrosion Effects 0.000 claims description 16
- 238000005260 corrosion Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 8
- 239000011433 polymer cement mortar Substances 0.000 claims description 8
- 239000000839 emulsion Substances 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000011083 cement mortar Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- -1 polyethylene Polymers 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 229920001567 vinyl ester resin Polymers 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000007849 furan resin Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000002987 primer (paints) Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920006174 synthetic rubber latex Polymers 0.000 description 1
- 229920006027 ternary co-polymer Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002759 woven fabric Substances 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、排水溝、排水管、貯槽などのコンクリート
構造物において、その表面を薬液やガスにより侵食から
保護するための防食ライニングの形成方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for forming an anticorrosion lining for protecting a surface of a concrete structure such as a drainage channel, a drainage pipe, and a storage tank from corrosion by a chemical liquid or gas. Regarding
コンクリート構造物の表面を、厳しい化学環境から保護
するために、耐食合成樹脂のライニングを施すことは、
従来から行われている。この合成樹脂ライニングは、エ
ポキシ樹脂、不飽和ポリエステル樹脂、フラン樹脂、ビ
ニルエステル樹脂を用いることが多く、樹脂単体で使用
する場合や、繊維、硅砂、充填材などを混合して使用す
る場合がある。そして、これらの合成樹脂は、コンクリ
ート躯体上に直接塗布する場合の他に、非水系合成樹脂
プライマーの塗層上に塗布する場合や、プライマー塗層
の凹凸を更に非水系合成樹脂パテ或いは非水系合成樹脂
モルタルによつて修正した上に塗布する場合がある。In order to protect the surface of concrete structures from the harsh chemical environment, lining with corrosion resistant synthetic resin is
It has been done from the past. This synthetic resin lining often uses an epoxy resin, an unsaturated polyester resin, a furan resin, or a vinyl ester resin, and may be used as a single resin or may be used by mixing fibers, silica sand, a filler, etc. . And, these synthetic resins, in addition to the case of applying directly on the concrete skeleton, the case of applying on the coating layer of the non-aqueous synthetic resin primer, and the unevenness of the primer coating layer further non-aqueous synthetic resin putty or non-aqueous system It may be applied after being modified with synthetic resin mortar.
上述の諸合成樹脂は、耐食性の面では極めて優れてお
り、特に鋼材などの耐食ライニングに用いた場合は、長
期にわたり優れた耐食性を発揮することができる。しか
し、コンクリート面のライニングに用いるときは、接着
界面での剥離現象が多発する。この現象は、コンクリー
トがその性質上含有している水分によるものであり、ラ
イニング施工前にコンクリート表面を如何に乾燥させて
おいても、被覆後短時間内にコンクリート内部の水分が
接着界面へ移動してくるために、防ぐのが困難である。
ライニング樹脂として親水性のものを用いるときは、剥
離現象を防ぐことができるが、高度の耐食性は期待でき
なくなる。The above-mentioned synthetic resins are extremely excellent in terms of corrosion resistance, and particularly when used in a corrosion-resistant lining of steel or the like, they can exhibit excellent corrosion resistance for a long period of time. However, when used for lining concrete surface, peeling phenomenon frequently occurs at the adhesive interface. This phenomenon is due to the water content of the concrete, and even if the concrete surface is dried before the lining work, the water content inside the concrete moves to the adhesive interface within a short time after coating. It is difficult to prevent because it comes.
When a hydrophilic lining resin is used, the peeling phenomenon can be prevented, but a high degree of corrosion resistance cannot be expected.
この発明は、コンクリート躯体上に、水系合成樹脂エマ
ルジヨンを含有するポリマーセメントモルタル層を塗装
し、その上に不透水シートを接着し、更にその上に耐食
性合成樹脂層を塗装する。In this invention, a polymer cement mortar layer containing an aqueous synthetic resin emulsion is coated on a concrete skeleton, a water impermeable sheet is adhered on it, and a corrosion resistant synthetic resin layer is further coated thereon.
上記不透明シートは、ポリエチレン、ポリプロピレン、
ポリエステル、ポリ塩化ビニル、ポリテトラフルオロエ
チレン等の不透水性合成樹脂フイルムの両面に、フイル
ムと同種または異種の材質の繊維、織布、或いは不織布
を、熱融着などによつて結合したものである。The opaque sheet is made of polyethylene, polypropylene,
Fiber, woven fabric, or non-woven fabric made of the same or different material as the film is bonded to both sides of the impermeable synthetic resin film such as polyester, polyvinyl chloride, polytetrafluoroethylene, etc. by heat fusion or the like. is there.
上記のポリマーセメントモルタルは、酢酸ビニル・エチ
レン２元共重合物、酢酸ビニル・エチレン・第３モノマ
ーの３元共重合物、ポリアクリル酸エステル系樹脂、合
成ゴム系ラテツクス、エポキシ樹脂などの水系エマルジ
ヨンに、使用直前にセメントと硅砂などの充填物を混合
したものである。The above-mentioned polymer cement mortar is an aqueous emulsion of vinyl acetate / ethylene binary copolymer, vinyl acetate / ethylene / tertiary monomer ternary copolymer, polyacrylic ester resin, synthetic rubber latex, epoxy resin, etc. In addition, it is a mixture of cement and filler such as silica sand just before use.
また、耐食性合成樹脂としては、エポキシ樹脂、不飽和
ポリエステル樹脂、ビニルエステル樹脂、フラン樹脂、
ウレタン樹脂、塩化ゴムなどを始め、瀝青質材料など、
広範囲のものを使用できる。そして、これらの耐食性合
成樹脂は、単独で使用する他、ガラスフレーク、グラフ
アイトフレーク、マイカなどのフレーク状材料や、硅砂
などの無機充填材を混入して使用することができ、ガラ
ス繊維、炭素繊維、ポリエステル繊維、ポリプロピレン
繊維などの無機或いは有機繊維によつて補強することも
できる。この耐食性合成樹脂層の厚さは、通常は1mm以
下で十分であるが、特に強度を要する場合は厚くするこ
ともできる。Further, as the corrosion-resistant synthetic resin, epoxy resin, unsaturated polyester resin, vinyl ester resin, furan resin,
Urethane resin, chlorinated rubber, bituminous materials, etc.
A wide range can be used. And, these corrosion-resistant synthetic resins, in addition to being used alone, glass flakes, graphite flakes, flake-like materials such as mica, and inorganic fillers such as silica sand can be mixed and used, glass fiber, carbon. It can also be reinforced with inorganic or organic fibers such as fibers, polyester fibers, polypropylene fibers. The thickness of the corrosion-resistant synthetic resin layer is usually sufficient to be 1 mm or less, but can be increased if strength is particularly required.
ポリマーセメントモルタルは、合成樹脂エマルジヨンの
水分とセメントとが反応するため、コンクリート躯体と
不透水シートとによつて閉ざされた空間内にあっても硬
化し、不透水シートの表面の繊維質層に浸透し、これを
コンクリート躯体に強固に接着する。次いで、耐食性合
成樹脂層も不透水シートの表面の繊維質層に浸透し、強
固に結合する。このようにして、外表面の耐食性合成樹
脂層はコンクリート躯体の表面を強固に覆う。このと
き、不透水シートの内部の不透水フイルムは、コンクリ
ート躯体やポリマーセメントモルタルの水分がシート外
表面に滲出して、耐食性合成樹脂との結合を阻害するの
を防ぐ。Since polymer cement mortar reacts with the water content of synthetic resin emulsion and cement, it hardens even in the space enclosed by the concrete skeleton and the impermeable sheet, forming a fibrous layer on the surface of the impermeable sheet. It penetrates and adheres firmly to the concrete frame. Then, the corrosion-resistant synthetic resin layer also penetrates into the fibrous layer on the surface of the water-impermeable sheet and firmly bonds to it. In this way, the corrosion-resistant synthetic resin layer on the outer surface firmly covers the surface of the concrete skeleton. At this time, the impermeable film inside the impermeable sheet prevents the moisture of the concrete skeleton or the polymer cement mortar from seeping out to the outer surface of the sheet and hindering the binding with the corrosion resistant synthetic resin.
図に示すように、コンクリート製廃酸槽１（材命１ケ
月）の内面をサンダーで研摩した後、水洗して塵を除去
し、湿潤状態のまま、アミン硬化性水系エポキシ樹脂エ
マルジヨンを混入したポリマーセメントモルタル２（日
本ジツコウ株式会社製ハイドロNJモルタル）を塗布し、
不透水シート３を貼付ける。不透水シート３は、ポリエ
チレンフイルムの両面にポリエチレン、ポリエステル等
の不織布を熱溶着したもので、PEシートの商品名で昭和
電工株式会社が生産している。更に、不透水シート３の
上に、メチルエチルケトンパーオキサイド硬化のビニル
エステル樹脂にガラスフレークを混入した重防食材４
（昭和高分子株式会社製リポキシフレークFC-83N）を塗
装する。このようにして形成したライニング層は、湿潤
状態のコンクリート面上に施工したにも拘らず、接着強
度は17〜20kg/cm2と極めて良好で、剥離はコンクリート
１とポリマーセメントモルタル２との間では起きず、不
透水シート３の部分で繊維の破断によつて起つた。As shown in the figure, the inner surface of the concrete waste acid tank 1 (1 month life) was ground with a sander, washed with water to remove dust, and mixed with an amine-curable water-based epoxy resin emulsion in a wet state. Apply polymer cement mortar 2 (Hydro NJ mortar manufactured by Nippon Zitsukou Co., Ltd.),
Attach the impermeable sheet 3. The water-impermeable sheet 3 is made by heat-welding a non-woven fabric such as polyethylene or polyester on both sides of a polyethylene film, and is manufactured by Showa Denko KK under the trade name of PE sheet. Further, on the water impermeable sheet 3, a heavy-duty food material 4 in which glass flakes are mixed with a methyl ethyl ketone peroxide-cured vinyl ester resin 4
(Showa Polymer Co., Ltd. Lipoxy Flake FC-83N) is applied. The lining layer thus formed has a very good adhesive strength of 17 to 20 kg / cm 2 despite the fact that it was applied on the wet concrete surface, and the peeling was between the concrete 1 and the polymer cement mortar 2. However, it did not occur in the water impermeable sheet 3 and was caused by the breakage of the fiber in the impermeable sheet 3.
比較のために、同様なコンクリート躯体内面をサンダー
研摩の後に水洗し、乾燥をまつて非水性ビニルエステル
系樹脂（昭和高分子株式会社製リポキシＲ−806）を塗
布し、その上に前記リポキシフレークFC-83Nを塗装し
た。この場合は、コンクリートとの接着界面で接着不良
が存在し、接着強度の測定は不能であつた。For comparison, a similar concrete body surface is sanded, washed with water, and dried to apply a non-aqueous vinyl ester resin (Ripoxy R-806 manufactured by Showa High Polymer Co., Ltd.) on which the above-mentioned lipoxy is applied. Flake FC-83N was painted. In this case, there was adhesion failure at the adhesion interface with concrete, and the measurement of the adhesion strength was impossible.
以上のように、この発明によるときは、コンクリート中
の水分に災されずに耐食性合成樹脂による防食ライニン
グを形成することができ、そのライニングのコンクリー
トに対する接着強度は十分満足できるものであつた。As described above, according to the present invention, the anticorrosion lining made of the corrosion resistant synthetic resin can be formed without being damaged by the moisture in the concrete, and the adhesive strength of the lining to the concrete is sufficiently satisfactory.
図はこの発明を実施した廃酸槽の断面図である。 １……廃酸槽（コンクリート躯体）、２……ポリマーセ
メントモルタル層、３……不透水シート、４……耐食性
合成樹脂層。The figure is a cross-sectional view of a waste acid tank in which the present invention is implemented. 1 ... Waste acid tank (concrete body), 2 ... Polymer cement mortar layer, 3 ... Impermeable sheet, 4 ... Corrosion resistant synthetic resin layer.
Claims (1)
ジヨンを含有するポリマーセメントモルタル層を塗装
し、このポリマーセメントモルタル層上に両面に繊維質
が露出している不透水シートを接着し、この不透水シー
ト上に耐食性合成樹脂層を塗装することを特徴とするコ
ンクリート構造物の防食ライニング方法。1. A concrete cement mortar layer containing a water-based synthetic resin emulsion is coated on a concrete skeleton, and a water-impermeable sheet having fibers exposed on both sides is adhered onto the polymer cement mortar layer. A method for anticorrosion lining of a concrete structure, which comprises coating a sheet with a corrosion resistant synthetic resin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61144083A JPH07102874B2 (en) | 1986-06-19 | 1986-06-19 | Anticorrosion lining method for concrete structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61144083A JPH07102874B2 (en) | 1986-06-19 | 1986-06-19 | Anticorrosion lining method for concrete structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6395A JPS6395A (en) | 1988-01-05 |
| JPH07102874B2 true JPH07102874B2 (en) | 1995-11-08 |
Family
ID=15353851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61144083A Expired - Lifetime JPH07102874B2 (en) | 1986-06-19 | 1986-06-19 | Anticorrosion lining method for concrete structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07102874B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0794349B2 (en) * | 1989-07-20 | 1995-10-11 | 工研開発株式会社 | Construction method of surface protection layer for concrete structure |
| JPH0450483U (en) * | 1990-09-04 | 1992-04-28 | ||
| US5283915A (en) * | 1992-08-10 | 1994-02-08 | Softub, Inc. | Power package for spa apparatus |
| JP3457579B2 (en) * | 1999-07-16 | 2003-10-20 | 株式会社ノリタケカンパニーリミテド | Concrete coating material and coating method |
| JP4767557B2 (en) * | 2005-03-07 | 2011-09-07 | アイカ工業株式会社 | Anticorrosion method for concrete structures |
| JP7029185B2 (en) * | 2019-12-09 | 2022-03-03 | 日本ジッコウ株式会社 | Anticorrosion method for concrete structures |
| JP2023019027A (en) * | 2021-07-28 | 2023-02-09 | 株式会社大林組 | Lining method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5248823A (en) * | 1975-10-16 | 1977-04-19 | Kubo Toso Kogyo Kk | Repairing process for tanks |
| JPS5529414A (en) * | 1978-08-09 | 1980-03-01 | Hitachi Ltd | Lined storage tank |
-
1986
- 1986-06-19 JP JP61144083A patent/JPH07102874B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6395A (en) | 1988-01-05 |
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