JPH0277588A - Method for lining inner surface of metallic pipe with mortar - Google Patents
Method for lining inner surface of metallic pipe with mortarInfo
- Publication number
- JPH0277588A JPH0277588A JP22816788A JP22816788A JPH0277588A JP H0277588 A JPH0277588 A JP H0277588A JP 22816788 A JP22816788 A JP 22816788A JP 22816788 A JP22816788 A JP 22816788A JP H0277588 A JPH0277588 A JP H0277588A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- mortar
- layer
- lining
- cement
- 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.)
- Granted
Links
- 239000004570 mortar (masonry) Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 8
- 239000011347 resin Substances 0.000 claims abstract description 28
- 229920005989 resin Polymers 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 239000004568 cement Substances 0.000 claims abstract description 14
- 239000004576 sand Substances 0.000 claims abstract description 8
- 230000005484 gravity Effects 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000010410 layer Substances 0.000 abstract description 33
- 239000011248 coating agent Substances 0.000 abstract description 6
- 238000000576 coating method Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000011247 coating layer Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000001175 rotational moulding Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は金属管内面のモルタルライニング方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for lining the inner surface of a metal tube with mortar.
従来、上水、下水、農水あるいは王水用排水等として用
いられる鋼管、鋳鉄管は内面の腐蝕を避けるため、モル
タルライニングを施すのが９ｉｆｆｉである。Conventionally, steel pipes and cast iron pipes used for water supply, sewage, agricultural water, or aqua regia drainage are provided with mortar lining to prevent inner surface corrosion.
−ａに上記モルタルライニングは、セメント、砂より成
るライニング用組成物に水を添加してスラリーとなし、
回転する管内に供給して遠心力によりライニング層を成
形し、さらにこのライニング層を養生硬化後、シールコ
ート剤を表面に塗装して製品化することが行なわれる。-a, the mortar lining is made into a slurry by adding water to a lining composition consisting of cement and sand;
The material is fed into a rotating tube to form a lining layer by centrifugal force, and after the lining layer is cured and cured, a seal coat agent is applied to the surface to produce a product.
ところで、上記モルタルライニング法において、モルタ
ルライニング層とシールコート層との密着性を高めるた
めモルタルライニング層表面に析出するエフロ分などの
研削除去が必要となり、この作業が非常に面倒であると
共に、養生工程を経た後にこれら工程及びシールコート
剤塗布を行なうので、工程数並びに製造時間が掛かり、
生産性に改良すべき点が有る欠点があった。By the way, in the above mortar lining method, in order to improve the adhesion between the mortar lining layer and the seal coat layer, it is necessary to remove the Eflo content deposited on the surface of the mortar lining layer by polishing. Since these steps and seal coat agent application are performed after the process, the number of steps and manufacturing time are increased.
There were some drawbacks in terms of productivity that needed improvement.
もっとも、モルタルライニング層を成形後、未養生の段
階で表面にシールコート剤を塗布してしまえば上述の問
題は解消し得るが、眉間に析出するエフロ成分などに起
因して剥離が生じゃすくなリ、とうてい実用出来ないこ
ととなる。However, if a seal coat agent is applied to the surface of the mortar lining layer before it is cured after forming, the above-mentioned problem can be solved, but peeling may occur due to the Eflo component deposited between the eyebrows. This would be extremely impractical.
（発明が解決しようとする課題〕
この発明は上記問題点に鑑み、工程が少なく、しかも、
密着性及び耐水性、シール性も非常に優れたものとなし
得る金属管内面のモルタルライニング方法を提供するこ
とを目的としてなされたものである。(Problem to be solved by the invention) In view of the above problems, this invention has fewer steps, and
The object of this invention is to provide a method for lining the inner surface of a metal tube with mortar that provides excellent adhesion, water resistance, and sealing properties.
即ち、この発明の金属管内面のモルタルライニング方法
はセメント及び砂から成るモルタルライニング用組成物
に、セメントと、シールコート剤との双方に親和性を有
する樹脂を添加したライニング組成物を、金属管内面に
供給して遠心成層し、遠心力及び組成物の比重差により
ライニング層表面に前記樹脂層を成層し、核層上にシー
ルコート剤を塗布することを特徴とするものである。That is, the method for lining the inner surface of a metal pipe with mortar according to the present invention is to apply a lining composition in which a resin having affinity with both cement and a seal coat agent is added to a mortar lining composition consisting of cement and sand inside the metal pipe. The resin layer is supplied onto the surface of the lining layer and centrifugally laminated, the resin layer is laminated on the surface of the lining layer by centrifugal force and the difference in specific gravity of the composition, and a seal coat agent is applied on the core layer.
この発明において使用されるモルタルライニング用組成
物としては従来常法に用いられている配合率とされたセ
メント、砂が用いられる。As the mortar lining composition used in this invention, cement and sand are used in the proportions conventionally used.
このモルタルライニング用組成物に添加される樹脂は、
セメントと後述するシールコート剤の両者に親和性を有
するものが選ばれ具体的にはアクリル溶剤系などの樹脂
が使用される。The resin added to this mortar lining composition is
A resin having an affinity for both cement and a seal coat agent to be described later is selected, and specifically, an acrylic solvent-based resin is used.
上記樹脂は、予め前述のモルタルライニング用組成物に
混合され、金属管の内面ライニング層の遠心成形に供給
されるが、この遠心成形の過程において、樹脂成分はセ
メント、砂よりも比重が低いため、セメント、砂等と付
着していない遊離した樹脂分はうイニング層表面に層状
に浮き出た状態となる。The above resin is mixed in advance with the mortar lining composition mentioned above and supplied to the centrifugal molding of the inner lining layer of the metal pipe. , the free resin that is not attached to cement, sand, etc. stands out in a layered manner on the surface of the lining layer.
従って、各層の断面構造として第１図に示すように金属
管１の内面に樹脂とモルタルの混和ＦＪ２と、次第に樹
脂量が増加するモルタルとの混和層３と樹脂成分のみの
層４とが成層される。Therefore, as shown in FIG. 1, the cross-sectional structure of each layer is such that on the inner surface of the metal tube 1, a mixture of resin and mortar FJ2, a layer 3 of a mixture of mortar in which the amount of resin gradually increases, and a layer 4 of only the resin component are layered. be done.
このライニング層を成層後、モルタルが未硬化の段階で
、シールコート層５を塗布してもシールコート剤５は樹
脂層４と接するため各層の接着状態は非常に良くなる。After forming this lining layer, even if the seal coat layer 5 is applied while the mortar is still uncured, the seal coat agent 5 comes into contact with the resin layer 4, so that the adhesion between each layer is very good.
しかる後、養生すれば密着性の良い、かつ、耐水性、耐
浸練性に優れたモルタルライニング層が形成出来るので
ある。After that, by curing, a mortar lining layer with good adhesion, water resistance, and penetration resistance can be formed.
次に、この発明の詳細な説明する。 Next, the present invention will be explained in detail.
セメントとシールコートとの親和性に優れる樹脂として
樹脂分５０％のアクリルエマルジョンを用い、セメント
、砂、水、及び前記樹脂が１１．１０、 ： ０．０５
となるよう配合し、均一混合して得たスラリーを直径１
１１の管内に供給し、３０Ｇｘ１分の条件で回転させて
、遠心成形によりモルタルライニング層を成層した。An acrylic emulsion with a resin content of 50% was used as a resin with excellent affinity for cement and seal coat, and the ratio of cement, sand, water, and the resin was 11.10: 0.05
The slurry obtained by uniformly mixing the slurry with a diameter of 1
The mortar lining layer was formed by centrifugal molding by supplying the material into a tube of No. 11 and rotating it under the conditions of 30 G x 1 minute.
回転成形後、表面に樹脂層が成形されたモルタルライニ
ング層上にアクリル溶剤系のシールコート剤を塗布量５
０ｇ／ｍ’〜１００ｇ／ｍ”の各塗布量で塗布ししかる
後、養生硬化させた。After rotational molding, apply an amount of acrylic solvent-based seal coat agent on the mortar lining layer on which the resin layer has been molded.
After coating in various coating weights of 0 g/m' to 100 g/m'', they were cured and cured.
上記実施例について、シールコートの密着力として、凍
結融解試験、ごばん目剥離テスト、及び２０℃×２４時
間の温水によるＰ Ｈ試験を行なったところ、表１の結
果となった。Regarding the above examples, a freeze-thaw test, a square peel test, and a PH test using hot water at 20° C. for 24 hours were conducted to determine the adhesion of the seal coat, and the results shown in Table 1 were obtained.
表１
なお、表１において、比較例はモルタルライニング用組
成物に樹脂成分を全く含まないものを用いたものを示す
。Table 1 In Table 1, Comparative Examples show those in which a mortar lining composition containing no resin component was used.
この発明は以上説明したように遠心成形の遠心力を利用
してライニング層上に樹脂リッチ層を成層し、これをシ
ールコート剤との接着層とするため、各層の密着性並び
に耐浸練性が著しく向上し、さらにモルタルが未硬化の
段階でもシールコート塗装が可能となるので工程数も大
幅に削減されるなど種々の効果を有する。As explained above, this invention uses the centrifugal force of centrifugal molding to form a resin-rich layer on the lining layer, and uses this as an adhesive layer with the seal coat agent, so that the adhesion and immersion resistance of each layer are improved. It has various effects, such as a significant improvement in the number of steps and a significant reduction in the number of steps since seal coating can be applied even when the mortar is not yet cured.
第１図はこの発明の作用説明断面図である。 FIG. 1 is a sectional view illustrating the operation of this invention.
Claims (1)
成物に、セメントと、シールコート剤との双方に親和性
を有する樹脂を添加したライニング組成物を、金属管内
面に供給して遠心成層し、遠心力及び組成物の比重差に
よりライニング層表面に前記樹脂層を成層し、該層上に
シールコート剤を塗布することを特徴とする金属管内面
のモルタルライニング方法。(1) A lining composition prepared by adding a resin that has an affinity for both cement and a seal coat agent to a mortar lining composition consisting of cement and sand is supplied to the inner surface of a metal tube and centrifugally stratified. A method for lining the inner surface of a metal pipe with mortar, the method comprising: forming the resin layer on the surface of the lining layer using force and a difference in specific gravity of the composition, and applying a seal coat agent on the layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22816788A JP2685242B2 (en) | 1988-09-12 | 1988-09-12 | Mortar lining method for inner surface of metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22816788A JP2685242B2 (en) | 1988-09-12 | 1988-09-12 | Mortar lining method for inner surface of metal pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0277588A true JPH0277588A (en) | 1990-03-16 |
| JP2685242B2 JP2685242B2 (en) | 1997-12-03 |
Family
ID=16872280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22816788A Expired - Fee Related JP2685242B2 (en) | 1988-09-12 | 1988-09-12 | Mortar lining method for inner surface of metal pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2685242B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004072333A1 (en) * | 2003-02-11 | 2004-08-26 | Topsil Semiconductor Materials A/S | An apparatus for and a method of manufacturing a single crystal rod |
-
1988
- 1988-09-12 JP JP22816788A patent/JP2685242B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004072333A1 (en) * | 2003-02-11 | 2004-08-26 | Topsil Semiconductor Materials A/S | An apparatus for and a method of manufacturing a single crystal rod |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2685242B2 (en) | 1997-12-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |