JPH04188060A - Method for judging degradation degree of building material - Google Patents
Method for judging degradation degree of building materialInfo
- Publication number
- JPH04188060A JPH04188060A JP31954290A JP31954290A JPH04188060A JP H04188060 A JPH04188060 A JP H04188060A JP 31954290 A JP31954290 A JP 31954290A JP 31954290 A JP31954290 A JP 31954290A JP H04188060 A JPH04188060 A JP H04188060A
- Authority
- JP
- Japan
- Prior art keywords
- zink
- ionized
- layer
- indicator
- degradation
- 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
- 238000000034 method Methods 0.000 title claims description 12
- 239000004566 building material Substances 0.000 title claims description 3
- 230000015556 catabolic process Effects 0.000 title abstract 5
- 238000006731 degradation reaction Methods 0.000 title abstract 5
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000010422 painting Methods 0.000 claims abstract description 3
- 230000006866 deterioration Effects 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 8
- 239000013076 target substance Substances 0.000 claims description 5
- 239000004035 construction material Substances 0.000 claims description 4
- 238000004040 coloring Methods 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 11
- 239000011162 core material Substances 0.000 abstract description 10
- 239000013077 target material Substances 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 8
- 239000012153 distilled water Substances 0.000 abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 4
- 239000000470 constituent Substances 0.000 abstract description 2
- 230000000007 visual effect Effects 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 6
- 229910052725 zinc Inorganic materials 0.000 description 6
- 239000011701 zinc Substances 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 241001163841 Albugo ipomoeae-panduratae Species 0.000 description 3
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 241000221535 Pucciniales Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- LLYOXZQVOKALCD-UHFFFAOYSA-N chembl1400298 Chemical compound OC1=CC=C2C=CC=CC2=C1N=NC1=CC=CC=N1 LLYOXZQVOKALCD-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は建築用材の劣化度判定方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for determining the degree of deterioration of building materials.
亜鉛メツキ鋼板をコア材とした塗装仕上げ鋼板は、建築
物の壁材等として広く用いられている。Painted steel sheets with galvanized steel sheets as the core material are widely used as wall materials for buildings, etc.
このような建築用材における仕上層の劣化度の判定を非
破壊で行なう場合、従来はコア材の錆が仕上層に滲出す
る状況を目視により観察し、劣化度を判定する方法がと
られていた。Conventionally, when determining the degree of deterioration of the finish layer of construction materials in a non-destructive manner, the conventional method was to visually observe the state in which rust from the core material seeps into the finish layer to determine the degree of deterioration. .
上記のごとき従来の判定方法によると、コア材の亜鉛メ
ツキ層の錆が白錆となって現われ、この白錆が仕上げ層
の塗装の劣化に伴って現われるチョーキングによる変色
と非常に近似した色合いであることから、仕上げ層の劣
化度を明確に判定することが困難なことが多い、また劣
化度を目視により判定した場合は、主観的な判断が入り
易く、客観性に欠ける問題がある。According to the conventional determination method described above, the rust on the galvanized layer of the core material appears as white rust, and this white rust has a color that is very similar to the discoloration due to chalking that appears as the finish layer paint deteriorates. For this reason, it is often difficult to clearly determine the degree of deterioration of the finishing layer, and when the degree of deterioration is determined visually, it tends to be subjective and lacks objectivity.
そこで、この発明は、ターゲット物質と反応して発色す
る指示薬を用いることにより、上記の問題点を解決する
ことを技術的課題とする。Therefore, the technical object of the present invention is to solve the above problems by using an indicator that develops color by reacting with a target substance.
上記の課題を解決するために、この発明は複層材料の内
部の層にターゲット物質を含み、表面に塗装や張付けに
よる仕上げ層を有する建築用材の当該仕上げ層の表面に
ターゲット物質のイオン化液を塗布したのち、その液を
発色指示薬に反応せしめる方法を採用したものである。In order to solve the above-mentioned problems, the present invention includes a target substance in the inner layer of a multilayer material, and applies an ionized liquid of the target substance to the surface of the finishing layer of a construction material that has a finishing layer formed by painting or pasting on the surface. This method employs a method in which the liquid is applied and then reacted with a coloring indicator.
［作用］
仕上げ層にイオン化液（例えば、蒸留水）を塗布して適
当な時間をおいたのち、そのイオン化液を脱脂綿に吸収
させるなどして吸い取り、吸い取ったイオン化液に指示
薬を添加する。目標層のターゲット物質が劣化により鯖
を生し、かつその錆が仕上げ層を破って表面に滲出して
いる場合は、その鯖の一部がイオン化液に接触してイオ
ン化し、指示薬がそのイオンと反応して発色する。[Function] After applying an ionized liquid (for example, distilled water) to the finishing layer and allowing a suitable period of time, the ionized liquid is absorbed by absorbent cotton or the like and sucked up, and an indicator is added to the sucked up ionized liquid. If the target material in the target layer has rusted due to deterioration and the rust has broken through the finishing layer and oozed out to the surface, some of the rust will come into contact with the ionizing liquid and become ionized, and the indicator will absorb the ions. It reacts with and develops color.
供試体として、亜鉛メツキ鋼板（コア材）に防食層を施
すと共に、その表面に塗料による仕上げ層をｋＩ−た建
築用材を用い、次の暴露促進試験を行った。The following accelerated exposure test was conducted using, as a specimen, a construction material in which a galvanized steel plate (core material) was coated with an anticorrosive layer and a finishing layer of paint was applied on the surface.
（１）暴露促進試験
■ ガス腐食試験
２００ｐｐｍ Ｓｏガスに３０００時間暴露後、３時
間の乾燥と３時間の結露とを繰返えした。(1) Exposure Acceleration Test ■ Gas Corrosion Test After 3000 hours of exposure to 200 ppm So gas, 3 hours of drying and 3 hours of dew condensation were repeated.
その結果、供試体の切口周辺からの侵食は認められるも
のの、仕上げ層は目視観察によるかぎり、殆ど変化は認
められなかった。As a result, although erosion was observed around the cut edges of the specimen, almost no change was observed in the finished layer as far as visual observation was concerned.
■ 耐候性試験
３０００時間の暴露により、光沢低下とマイクロクラン
クの発生が認められ、仕上げ層が白く変色したが、その
原因が亜鉛メツキの白錆によるものか、仕上げ層のチョ
ーキングによるものが、目視では判別がつかなかった。■ Weather resistance test After 3000 hours of exposure, a decrease in gloss and the occurrence of microcranks were observed, and the finish layer turned white, but it was visually confirmed whether this was due to white rust on the galvanized plating or chalking of the finish layer. I couldn't tell.
（２）指示薬
亜鉛イオンに反応して発色する指示薬としては次のもの
がある。各指示薬につき、その性能と総合評価を示すと
表−１のとおりである。(2) Indicators There are the following indicators that develop color in response to zinc ions. Table 1 shows the performance and overall evaluation of each indicator.
（３）判定方法
Ａ法：脱脂綿に蒸留水を含ませ、仕上層の塗装面を拭き
、拭いた面に指示薬を１．２滴落し、発色を観察する。(3) Judgment method Method A: Soak absorbent cotton in distilled water, wipe the painted surface of the finishing layer, drop 1.2 drops of an indicator on the wiped surface, and observe color development.
方法：脱脂綿に蒸留水を含ませ、仕上層の塗装面を拭き
、拭いた脱脂綿を試験管に入れ、指示薬を１．２滴落し
、発色を観察する。Method: Soak absorbent cotton in distilled water, wipe the painted surface of the finishing layer, put the wiped absorbent cotton into a test tube, drop 1.2 drops of indicator, and observe color development.
Ｃ法：仕上層の塗装面に蒸留水をかけ、脱脂綿又は吸収
紙でその水分を吸い取り、その唆い取り部分に指示薬を
１．２滴落し、発色を観察する。Method C: Sprinkle distilled water on the painted surface of the finishing layer, absorb the moisture with absorbent cotton or absorbent paper, drop 1.2 drops of an indicator on the soaked area, and observe the color development.
（４）具体例
指示薬として１−（２−ピリジルアゾ）−２−ナフトー
ル（ＰＡＮ）を用い、上記の暴露促進した供試体につき
上記Ａ−Ｃ法の判定を実施したところ、供試体の劣化の
程度と、指示薬の変色の関係から、表−２に示すような
判定の結果を得た。(4) Specific example: Using 1-(2-pyridylazo)-2-naphthol (PAN) as an indicator, the test specimens subjected to accelerated exposure were evaluated using the A-C method, and the degree of deterioration of the specimens was determined. Based on the relationship between this and the color change of the indicator, the results of the judgments shown in Table 2 were obtained.
表 ２
（５）考察
以上の結果により劣化過程を推定すると、仕上げ層の劣
化が進行し、塗装に割れが生し、表面がら順次構成材料
が劣化して行くことによってついにコア材にまで及び、
コア材が露出すると、先ず亜鉛のイオン化さらに鉄のイ
オン化が生じ錆を発生する。このとき、イオン化傾向の
差により、鉄が錆びる前に亜鉛のイオン化が起こる。Table 2 (5) Discussion If we estimate the deterioration process from the above results, the deterioration of the finishing layer progresses, cracks appear in the coating, and the constituent materials gradually deteriorate from the surface until it finally reaches the core material.
When the core material is exposed, first ionization of zinc and then ionization of iron occurs, causing rust. At this time, due to the difference in ionization tendency, ionization of zinc occurs before iron rusts.
従って、判定対象物に蒸留水を塗布することにより、亜
鉛をイオン化せしめ、イオン化した亜鉛を含む蒸留水に
指示薬を加えると、反応して発色することになる。Therefore, by applying distilled water to the object to be determined, zinc is ionized, and when an indicator is added to the distilled water containing ionized zinc, it reacts and develops color.
以上は、指示薬のターゲット物質としての亜鉛が、コア
材のメツキ層として使用される場合について述べたが、
この発明によれば、ターゲット物質は必ずしもコア材の
一部を構成する必要はなく、複層材料の内部の任意の層
に埋め込んでおけばよい、そうすることにより、任意の
深さに存在するターゲット物質までの仕上げ層の劣化度
を判定することができる。The above describes the case where zinc, which is the target material of the indicator, is used as the plating layer of the core material.
According to this invention, the target material does not necessarily need to constitute a part of the core material, but may be embedded in any layer inside the multilayer material, thereby allowing it to exist at any depth. The degree of deterioration of the finishing layer up to the target material can be determined.
また、ターゲット物質は、イオン化しやすい金属であれ
ばよく、亜鉛に限るものではない、また、指示薬もター
ゲット物質により適当なものを選定することができる。Further, the target material may be any metal that is easily ionized, and is not limited to zinc. Also, an appropriate indicator can be selected depending on the target material.
以上のように、この発明は目視によって判定し難い複層
材料の仕上げ層の劣化度を指示薬の発色の有無により判
定することができるので、非破壊により早期かつ客観的
に判定することができる。As described above, according to the present invention, the degree of deterioration of the finished layer of a multilayer material, which is difficult to determine visually, can be determined based on the presence or absence of color development of the indicator, so it can be determined non-destructively, quickly and objectively.
Claims (1)
面に塗装や張付けによる仕上げ層を有する建築用材の当
該仕上げ層の表面にターゲット物質のイオン化液を塗布
したのち、その液を発色指示薬に反応せしめる建築用材
の劣化度判定方法。(1) After applying an ionized liquid of the target substance to the surface of the finishing layer of a construction material that contains the target substance in the inner layer of the multilayer material and has a finishing layer on the surface by painting or pasting, the liquid is used as a coloring indicator. A method for determining the degree of deterioration of building materials by reacting with
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31954290A JPH0812189B2 (en) | 1990-11-21 | 1990-11-21 | Degradation method for building materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31954290A JPH0812189B2 (en) | 1990-11-21 | 1990-11-21 | Degradation method for building materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04188060A true JPH04188060A (en) | 1992-07-06 |
| JPH0812189B2 JPH0812189B2 (en) | 1996-02-07 |
Family
ID=18111416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31954290A Expired - Fee Related JPH0812189B2 (en) | 1990-11-21 | 1990-11-21 | Degradation method for building materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0812189B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001215195A (en) * | 2000-02-02 | 2001-08-10 | Chuken Consultant:Kk | Concrete structure and method for detecting deterioration thereof |
| JP2012149109A (en) * | 2011-01-17 | 2012-08-09 | Jfe Steel Corp | Anticorrosive coating material and coated steel stock |
-
1990
- 1990-11-21 JP JP31954290A patent/JPH0812189B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001215195A (en) * | 2000-02-02 | 2001-08-10 | Chuken Consultant:Kk | Concrete structure and method for detecting deterioration thereof |
| JP2012149109A (en) * | 2011-01-17 | 2012-08-09 | Jfe Steel Corp | Anticorrosive coating material and coated steel stock |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0812189B2 (en) | 1996-02-07 |
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Legal Events
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|---|---|---|---|
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Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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