JP2020138882A - Surface protective and decorative construction method for cement-based structure - Google Patents
Surface protective and decorative construction method for cement-based structure Download PDFInfo
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- 239000004568 cement Substances 0.000 title claims abstract description 53
- 238000010276 construction Methods 0.000 title claims abstract description 16
- 230000001681 protective effect Effects 0.000 title claims abstract description 7
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000008199 coating composition Substances 0.000 claims abstract description 44
- 239000002344 surface layer Substances 0.000 claims abstract description 33
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- 239000001023 inorganic pigment Substances 0.000 claims abstract description 19
- 230000004048 modification Effects 0.000 claims abstract description 18
- 238000012986 modification Methods 0.000 claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims abstract description 12
- 239000002537 cosmetic Substances 0.000 claims description 43
- 239000004567 concrete Substances 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 29
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- 239000000203 mixture Substances 0.000 claims description 17
- 239000000049 pigment Substances 0.000 claims description 15
- 239000004606 Fillers/Extenders Substances 0.000 claims description 8
- 229910052783 alkali metal Inorganic materials 0.000 claims description 7
- 150000001340 alkali metals Chemical class 0.000 claims description 7
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 6
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 6
- 238000007730 finishing process Methods 0.000 claims description 5
- 241001465754 Metazoa Species 0.000 abstract description 3
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- 238000000576 coating method Methods 0.000 description 39
- 239000011248 coating agent Substances 0.000 description 38
- 229920005989 resin Polymers 0.000 description 26
- 239000011347 resin Substances 0.000 description 26
- 238000012360 testing method Methods 0.000 description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000011575 calcium Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 229910052791 calcium Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
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- 229910052918 calcium silicate Inorganic materials 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 239000000378 calcium silicate Substances 0.000 description 5
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 5
- PAZHGORSDKKUPI-UHFFFAOYSA-N lithium metasilicate Chemical compound [Li+].[Li+].[O-][Si]([O-])=O PAZHGORSDKKUPI-UHFFFAOYSA-N 0.000 description 5
- 229910052912 lithium silicate Inorganic materials 0.000 description 5
- 229910052913 potassium silicate Inorganic materials 0.000 description 5
- 229910052911 sodium silicate Inorganic materials 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000004111 Potassium silicate Substances 0.000 description 4
- 239000004115 Sodium Silicate Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 description 4
- 235000019353 potassium silicate Nutrition 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
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- 238000012423 maintenance Methods 0.000 description 3
- 229910001507 metal halide Inorganic materials 0.000 description 3
- 150000005309 metal halides Chemical class 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000010454 slate Substances 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 230000002730 additional effect Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
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- 229910052731 fluorine Inorganic materials 0.000 description 2
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- 239000010881 fly ash Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910021487 silica fume Inorganic materials 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000011882 ultra-fine particle Substances 0.000 description 2
- 229910021489 α-quartz Inorganic materials 0.000 description 2
- FCZNNHHXCFARDY-RRJWCGLDSA-N (2s,4s,5r,6r)-3,3-dimethyl-4,7-dioxo-6-[(2-phenylacetyl)amino]-4$l^{4}-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid Chemical compound N([C@H]1[C@@H]2N(C1=O)[C@H](C([S@@]2=O)(C)C)C(O)=O)C(=O)CC1=CC=CC=C1 FCZNNHHXCFARDY-RRJWCGLDSA-N 0.000 description 1
- RWFBQHICRCUQJJ-NUHJPDEHSA-N (S)-nicotine N(1')-oxide Chemical compound C[N+]1([O-])CCC[C@H]1C1=CC=CN=C1 RWFBQHICRCUQJJ-NUHJPDEHSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
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- 230000003628 erosive effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
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- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
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- 239000000758 substrate Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Paints Or Removers (AREA)
Abstract
Description
本発明は、コンクリートやモルタルなどのセメント系構造物の表面保護と化粧仕上げとを一体的に行うためのセメント系構造物の表面保護化粧工法に関するものである。 The present invention relates to a surface protection cosmetic method for cement-based structures for integrally performing surface protection and decorative finishing of cement-based structures such as concrete and mortar.
従来、コンクリートやモルタルなどのセメント系構造物の表面を保護し耐久性を向上させる工法としては、当該構造物表面に対する被覆能にすぐれた樹脂系塗料組成物、たとえばエポキシ樹脂、フッ素樹脂、アクリル系樹脂、ポリエステル樹脂ないしシリコーン樹脂を主材とする塗料組成物を適用する工法が主流である。 Conventionally, as a method of protecting the surface of a cement-based structure such as concrete or mortar and improving durability, a resin-based paint composition having excellent coating ability on the surface of the structure, for example, epoxy resin, fluororesin, acrylic-based The mainstream method is to apply a coating composition mainly composed of resin, polyester resin or silicone resin.
これら樹脂系塗料組成物は、フィルム形成能にすぐれていることから、モルタルやコンクリート構造物に対する酸性雨や塩害への対処方法や表面保護方法として一般的に使用されている。また、樹脂系塗料組成物は、色剤としての染料とも相容性にすぐれていることから、化粧用塗料として簡易に活用できるという利便性においても有利である。（特許文献１〜５参照）
しかしながら、従来の樹脂系塗料組成物は、フィルム形成能にすぐれてはいるものの、比較的塗料の粘性が高いため、コンクリート構造物の表層内部の空隙にまで浸透することはない。そして、樹脂塗膜は、構造物表面に樹脂固有の粘度によって付着しているため、樹脂塗膜が紫外線によって硬化や劣化を引き起こし、短期間のうちに構造物表面から剥離したり塗膜自体に亀裂が生じて、結果的に樹脂塗膜による表面保護機能が低下するという問題がある。
Since these resin-based paint compositions have excellent film-forming ability, they are generally used as a method for dealing with acid rain and salt damage to mortars and concrete structures, and as a surface protection method. In addition, since the resin-based paint composition has excellent compatibility with dyes as colorants, it is also advantageous in terms of convenience that it can be easily used as a cosmetic paint. (See Patent Documents 1 to 5)
However, although the conventional resin-based coating composition has excellent film-forming ability, the viscosity of the coating material is relatively high, so that the conventional resin-based coating composition does not penetrate into the voids inside the surface layer of the concrete structure. Since the resin coating film adheres to the surface of the structure due to the viscosity peculiar to the resin, the resin coating film causes hardening or deterioration due to ultraviolet rays, and is peeled off from the structure surface or applied to the coating film itself in a short period of time. There is a problem that cracks occur, and as a result, the surface protection function of the resin coating film deteriorates.
また、従来の樹脂系塗料組成物を用いる工法では、樹脂塗膜のフィルム形成能に起因して、外部からのコンクリート構造物に対する侵食要因に対する抵抗性を具備しており、その限りにおいては表面保護機能にすぐれていると言えるが、反面、表面の塗膜が、セメント系構造物の内部に含まれる水分が気温の変化等により気化し外部へ蒸散しようとする現象を阻害することにもなる。その結果、構造物内部に水分が過剰に滞留し、このためコンクリート構造物の場合にあっては、骨材に使用されている砕石等からの溶出物により、いわゆる「アルカリ骨材反応」を助長することになり、これに起因して、コンクリートの内部に微細なクラックが発生してコンクリート構造物の物理的強度を著しく低下させるという新たな問題が生じる。 Further, in the conventional construction method using a resin-based coating composition, due to the film-forming ability of the resin coating film, it has resistance to erosion factors to the concrete structure from the outside, and to that extent, surface protection is provided. It can be said that it has excellent functions, but on the other hand, the coating film on the surface also hinders the phenomenon that the moisture contained inside the cement-based structure vaporizes due to changes in temperature and the like and tends to evaporate to the outside. As a result, excess water stays inside the structure, and in the case of concrete structures, the so-called "alkali aggregate reaction" is promoted by the eluate from crushed stones used for the aggregate. As a result, a new problem arises in which fine cracks are generated inside the concrete and the physical strength of the concrete structure is significantly reduced.
さらにまた、従来の樹脂系塗料組成物においては、セメント系構造物のアルカリ特性に起因する問題もある。すなわち、通常、強アルカリ剤は樹脂系塗膜の剥離剤として使用されており、たとえばアルカリ性がｐＨ１１．５〜１２の強アルカリ性を有するコンクリート中から、温度変化等に起因してアルカリ成分が気化ないし流出する場合がある。このようにして生じた強アルカリ性水蒸気や内部結露による強アルカリ性水分が、表面を保護している樹脂塗膜に対して内部からアタックし、コンクリートとの接着性を低下させて、樹脂塗膜の剥離現象を促進し、これによって保護膜としての耐久性が短期間で失われてしまう事態となる。これに対処するためには、短期間での塗り替え作業を行う必要があり、メンテナンス作業コストがいきおい増大するという更なる問題がある。 Furthermore, in the conventional resin-based coating composition, there is a problem due to the alkaline characteristics of the cement-based structure. That is, a strong alkaline agent is usually used as a release agent for a resin-based coating film. For example, in concrete having a strong alkalinity of pH 11.5 to 12, the alkaline component does not vaporize due to a temperature change or the like. It may leak. The strong alkaline water vapor generated in this way and the strong alkaline moisture due to internal dew condensation attack the resin coating film that protects the surface from the inside, reducing the adhesion to concrete and peeling off the resin coating film. It promotes the phenomenon, and as a result, the durability as a protective film is lost in a short period of time. In order to deal with this, it is necessary to perform the repainting work in a short period of time, and there is a further problem that the maintenance work cost increases sharply.
本発明は、上述した従来のセメント系構造物の表面保護ないし表面塗装工法の問題に着目してなされたものであり、メンテナンスフリー化を実現し得る耐久性と耐候性にすぐれるとともに、人体・動植物に対して無害で環境フットプリントの低減にもすぐれた、セメント系構造物の表面保護化粧工法を提供することを目的とするものである。 The present invention has been made by paying attention to the above-mentioned problems of surface protection or surface coating method of a conventional cement-based structure, and has excellent durability and weather resistance that can realize maintenance-free operation, as well as the human body. The purpose is to provide a surface protection cosmetic method for cement-based structures that is harmless to animals and plants and has an excellent reduction in environmental footprint.
上記の技術的課題を解決するために、本発明は、セメント系構造物の表面ないし表層部を保護するとともに表面の化粧仕上げも一体的に行うためのセメント系構造物の表面保護化粧工法であって、ケイ酸塩を主成分として含有する無機系表層改質コーティング組成物を前記セメント系構造物の表面に塗布し、これを表層に含浸させる表層改質工程と、ケイ酸塩を主成分として含むケイ酸塩系無機バインダーと無機系顔料とを含んでなる化粧用コーティング組成物を、前記表層改質工程が施された前記セメント系構造物の表層改質表面に塗布する化粧仕上げ工程とを含んでなり、前記セメント系構造物の表面に耐久性と耐候性にすぐれた化粧仕上げ層を形成することを特徴としている。 In order to solve the above technical problems, the present invention is a surface protection cosmetic method for cement-based structures for protecting the surface or surface layer portion of the cement-based structure and integrally performing a decorative finish on the surface. Then, an inorganic surface modification coating composition containing silicate as a main component is applied to the surface of the cement-based structure, and the surface layer is impregnated with the inorganic surface modification coating composition, and a surface modification step containing silicate as a main component. A cosmetic finishing step of applying a cosmetic coating composition containing a silicate-based inorganic binder and an inorganic pigment to the surface-modified surface of the cement-based structure subjected to the surface-modifying step. It is characterized by forming a decorative finishing layer having excellent durability and weather resistance on the surface of the cement-based structure.
本発明の好ましい態様においては、上記セメント系構造物が、コンクリートまたはモルタルからなる。 In a preferred embodiment of the present invention, the cement-based structure is made of concrete or mortar.
また、本発明の他の態様においては、上記無機系顔料は、体質顔料からなることが好ましい。 Further, in another aspect of the present invention, the inorganic pigment preferably comprises an extender pigment.
さらに、本発明においては、上記無機系表層改質コーティング組成物が、アルカリ金属およびアルカリ土類金属から選ばれた少なくとも１種のケイ酸塩と水を含んでなることが好ましく、さらには、上記ケイ酸塩系無機バインダーが、アルカリ金属およびアルカリ土類金属から選ばれた少なくとも１種のケイ酸塩と水を含んでなることが好ましい。 Further, in the present invention, the inorganic surface modified coating composition preferably contains at least one silicate and water selected from alkali metals and alkaline earth metals, and further, the above. The silicate-based inorganic binder preferably contains at least one silicate and water selected from alkali metals and alkaline earth metals.
本発明の好ましい態様においては、上記の表層改質工程を複数回実施することが望ましい。 In a preferred embodiment of the present invention, it is desirable to carry out the above-mentioned surface reforming step a plurality of times.
さらに、本発明は、セメント系構造物の表面ないし表層部を保護するとともに表面の化粧仕上げも一体的に行うためのセメント系構造物の表面保護化粧工法に用いる組成物の組み合わせからなる組成物キットであって、前記セメント系構造物の表面に塗布し、これを表層に含浸させる表層改質工程に用いる、ケイ酸塩を主成分として含有してなる無機系表層改質コーティング組成物Ａと、前記表層改質工程が施された前記セメント系構造物の表層改質表面に塗布する化粧仕上げ工程に用いる、ケイ酸塩を主成分として含むケイ酸塩系無機バインダーと無機系顔料とを含んでなる化粧用コーティング組成物Ｂ、との組み合わせからなることを特徴とする、表面保護化粧用組成物キットを含むものである。 Further, the present invention is a composition kit comprising a combination of compositions used in the surface protection cosmetic method of a cement-based structure for protecting the surface or surface layer portion of the cement-based structure and integrally performing a decorative finish on the surface. An inorganic surface modification coating composition A containing a silicate as a main component, which is used in a surface modification step of applying the cement-based structure to the surface and impregnating the surface layer with the cement-based structure. It contains a silicate-based inorganic binder containing silicate as a main component and an inorganic pigment used in a cosmetic finishing step of applying to the surface-modified surface of the cement-based structure subjected to the surface modification step. Includes a surface protection cosmetic composition kit, which comprises a combination with the cosmetic coating composition B.
本発明に係るセメント系構造物の表面保護化粧工法は、表層改質工程と化粧仕上げ工程とを組み合わせる複合的工法を採用していることから、セメント系構造物の表層部の改質・保護とともに表面の化粧仕上げを一体的に行うことができるため、耐久性と耐候性にすぐれた化粧仕上げ層を形成することができるというすぐれた効果を奏する。 Since the surface protection cosmetic method for cement-based structures according to the present invention employs a composite method that combines a surface modification process and a decorative finishing process, it is possible to modify and protect the surface layer of the cement structure. Since the cosmetic finish of the surface can be integrally performed, it has an excellent effect that a decorative finish layer having excellent durability and weather resistance can be formed.
これにより、本発明によれば、長期にわたる塗り替え不要でメンテナンスフリー化を実現し得る耐久性と耐候性にすぐれるとともに、人体・動植物に対して無害で環境フットプリントの低減にもすぐれた、セメント系構造物の表面保護化粧工法を提供することが可能となる。 As a result, according to the present invention, cement is excellent in durability and weather resistance, which can realize maintenance-free operation without repainting for a long period of time, and is harmless to humans, animals and plants, and has excellent reduction in environmental footprint. It becomes possible to provide a surface protection cosmetic method for a system structure.
以下、好ましい実施形態に基づいて本発明をさらに詳細に説明する。 Hereinafter, the present invention will be described in more detail based on preferred embodiments.
本発明に係る表面保護化粧工法は、セメント系構造物の表面ないし表層部を保護するとともに表面の化粧仕上げも一体的に行うためのセメント系構造物の表面保護化粧工法であって、ケイ酸塩を主成分として含有する無機系表層改質コーティング組成物を前記セメント系構造物の表面に塗布し、これを表層に含浸させる表層改質工程と、ケイ酸塩を主成分として含むケイ酸塩系無機バインダーと無機系顔料とを含んでなる化粧用コーティング組成物を、前記表層改質工程が施された前記セメント系構造物の表層改質表面に塗布する化粧仕上げ工程とを含んでなり、前記セメント系構造物の表面に耐久性と耐候性にすぐれた化粧仕上げ層を形成することを特徴としている。 The surface protection cosmetic method according to the present invention is a surface protection cosmetic method for a cement-based structure for protecting the surface or surface layer portion of the cement-based structure and integrally performing a decorative finish on the surface, and is a silicate. A surface layer modification step of applying an inorganic surface modification coating composition containing the above as a main component to the surface of the cement-based structure and impregnating the surface layer with the composition, and a silicate system containing silicate as a main component. A cosmetic finishing step of applying a cosmetic coating composition containing an inorganic binder and an inorganic pigment to the surface-modified surface of the cement-based structure subjected to the surface-modifying step is included. It is characterized by forming a decorative finishing layer having excellent durability and weather resistance on the surface of a cement-based structure.
本発明の好ましい態様においては、上記セメント系構造物が、コンクリートまたはモルタルからなる。 In a preferred embodiment of the present invention, the cement-based structure is made of concrete or mortar.
表層改質工程
表層改質工程は、ケイ酸塩を主成分として含有する無機系表層改質コーティング組成物をセメント系構造物の表面に塗布し、これを表層に含浸させることによって、セメント系構造物の表層を改質する工程からなる。
Surface reforming step In the surface reforming step, an inorganic surface reforming coating composition containing silicate as a main component is applied to the surface of a cement-based structure, and the surface layer is impregnated with this to impregnate the surface layer to form a cement-based structure. It consists of a process of reforming the surface layer of an object.
セメント系構造物としてコンクリートを例に説明すると、この改質工程においては、コンクリートが含む内部空隙（通常、コンクリートの体積の２５％程度存在する）の部分にケイ酸塩の主要成分であるケイ素、カリウム、カルシウム、マグネシウム、ナトリウム、リチウムなどのアルカリ金属ないしアルカリ土類金属のケイ酸塩成分を適宜含む水和物を含浸させて、これら成分を空隙部分に入り込ませることによって、コンクリート中に存在する未反応生成物（主にカルシウム成分）と再反応を促し、安定な成分であるケイ酸カルシウムの再結晶構造体を生成させることができる。 Taking concrete as an example of a cement-based structure, in this reforming step, silicon, which is a main component of silicate, is present in the internal voids (usually, about 25% of the volume of concrete) contained in concrete. It exists in concrete by impregnating it with a hydrate that appropriately contains silicate components of alkali metals such as potassium, calcium, magnesium, sodium, and lithium, and allowing these components to enter the voids. It can promote a rereaction with an unreacted product (mainly a calcium component) to form a recrystallized structure of calcium silicate, which is a stable component.
この再結晶構造体を生成させることによって、コンクリートの弱点である上記空隙に起因する機械的特性（引張強度と曲げ強度）を飛躍的に向上させることができる。特に、酸性雨や塩化物イオンによるコンクリート中のカルシウム成分の溶出によって空隙が肥大化した劣化コンクリート構造物に対しては、上記表層改質工程は極めて有効である。この表層改質工程によって、コンクリート中に形成された空隙部分に上記無機系表層改質コーティング組成物が含浸し、コンクリート中のカルシウム成分を取り込んで、組成物中のケイ酸塩と再反応し凝集することにより、水の溶出しないケイ酸カルシウムの結晶構造体を形成し、これによって劣化したコンクリートの機械的強度（圧縮強度、引張り強度、曲げ強度ならびに強度）を満足のいくレベルまで向上させることができる。 By generating this recrystallized structure, it is possible to dramatically improve the mechanical properties (tensile strength and bending strength) caused by the above-mentioned voids, which are weak points of concrete. In particular, the surface layer reforming step is extremely effective for deteriorated concrete structures in which voids are enlarged due to elution of calcium components in concrete due to acid rain or chloride ions. By this surface layer modification step, the void portion formed in the concrete is impregnated with the inorganic surface layer modification coating composition, the calcium component in the concrete is taken in, and it re-reacts with the silicate in the composition and aggregates. By doing so, it is possible to form a crystal structure of calcium silicate that does not elute water, thereby improving the mechanical strength (compressive strength, tensile strength, bending strength and strength) of deteriorated concrete to a satisfactory level. it can.
さらにまた、無機系表層改質コーティング組成物のケイ酸塩成分によって生成するケイ酸カルシウムの結晶構造体は、超微粒子状（準ナノ〜ナノレベルの超微粒子）の微細な隙間を有する結晶構造体からなるので、このような微細な隙間は、水分子を透過させず、水蒸気等の気体のみを通過させ得るようないわゆる網目構造を構成し、結果的にコンクリートの通気性をもたらし、コンクリートに必要な水分は水蒸気として出入りすることになるため、水和反応の進行を阻害することはない。 Furthermore, the crystal structure of calcium silicate produced by the silicate component of the inorganic surface modified coating composition is a crystal structure having fine gaps in the form of ultrafine particles (quasi-nano to nano-level ultrafine particles). Therefore, such fine gaps form a so-called network structure that does not allow water molecules to permeate but allows only gas such as water vapor to pass through, resulting in air permeability of concrete, which is necessary for concrete. Since the water vapor enters and exits as water vapor, it does not hinder the progress of the hydration reaction.
また、コンクリート内部に結露が生じた場合であっても、無機系表層改質コーティング組成物のケイ酸塩成分によって生成するケイ酸カルシウムの結晶構造体が有する微細ポーラス構造が、余分の水分を水蒸気として外部に放出することによって、内部結露水としてコンクリート内に残存することが防止される。これによって、骨材から溶出する膨張生成物を効果的に封じ込めることができ、上述した従来の樹脂系塗料で問題となっていた「アルカリ骨材反応」も効果的に抑止することができる。 Further, even when dew condensation occurs inside the concrete, the fine porous structure of the crystal structure of calcium silicate produced by the silicate component of the inorganic surface modified coating composition allows excess water vapor to be removed. By releasing it to the outside as an internal dew condensation water, it is prevented from remaining in the concrete. As a result, the expansion product eluted from the aggregate can be effectively contained, and the "alkali aggregate reaction" which has been a problem in the above-mentioned conventional resin-based paint can be effectively suppressed.
上記の効果を得るために、本発明における無機系表層改質コーティング組成物は、アルカリ金属およびアルカリ土類金属から選ばれた少なくとも１種のケイ酸塩を主成分とし、水を含んでなる。この場合のケイ酸塩として好ましい成分は、カリウム、カルシウム、マグネシウム、ナトリウムおよびリチウムのケイ酸塩であり、好ましくは天然のケイ酸質材料を原料とする成分が適宜使用され得る。 In order to obtain the above effects, the inorganic surface modified coating composition in the present invention contains at least one silicate selected from alkali metals and alkaline earth metals as a main component and contains water. The preferred component of the silicate in this case is potassium, calcium, magnesium, sodium and lithium silicate, and preferably a component made from a natural siliceous material can be appropriately used.
例えば、天然のケイ酸質材料としては、α−石英を主成分とするケイ石微粉末や産業副産物であるシリカフューム、フライアッシュなどを用いることができ、含有ケイ酸塩としては、ケイ酸カリウム、ケイ酸ナトリウム、ケイ酸リチウムないしこれらの混合成分を含むことが望ましい。 For example, as a natural siliceous material, fine silicate powder containing α-quartz as a main component, silica fume, which is an industrial by-product, fly ash, etc. can be used, and as a contained silicate, potassium silicate, etc. can be used. It is desirable to include sodium silicate, lithium silicate or a mixture thereof.
本発明における無機系表層改質コーティング組成物は、水溶液ないし懸濁液（スラリー）の状態として用いられ、この場合の溶媒は、好ましくは水ないし水性媒体である。 The inorganic surface modified coating composition in the present invention is used as an aqueous solution or a suspension (slurry), and the solvent in this case is preferably water or an aqueous medium.
表層改質コーティング組成物に占めるケイ酸塩の配合比（固形分）は、１０〜４０質量％が好ましく、さらに好ましくは１２〜３０質量％であり、特に好ましくは、１４〜２５質量％である。 The compounding ratio (solid content) of the silicate in the surface modified coating composition is preferably 10 to 40% by mass, more preferably 12 to 30% by mass, and particularly preferably 14 to 25% by mass. ..
さらに、無機系表層改質コーティング組成物には、必要に応じて、体質顔料等の無機系顔料を所定量含有させることもできる。 Further, the inorganic surface layer modified coating composition may contain a predetermined amount of an inorganic pigment such as an extender pigment, if necessary.
本発明における上記無機系表層改質コーティング組成物は、本質的に無機系組成物であって樹脂系成分を主要成分として含有するものではないが、分散性能やレベリング特性等の付加的特性の向上のために所定量の樹脂成分を適宜含有させることができる。 The inorganic surface modified coating composition in the present invention is essentially an inorganic composition and does not contain a resin component as a main component, but improves additional properties such as dispersion performance and leveling properties. Therefore, a predetermined amount of resin component can be appropriately contained.
なお、また、本発明においては、表層改質工程は、施工が適切であれば１回の施工で効果が得られるが、セメント系構造物の表層改質をより良好なものにするためには、この表層改質工程を複数回実施することが望ましい。 Further, in the present invention, the surface reforming step can be effective with one construction if the construction is appropriate, but in order to improve the surface reforming of the cement-based structure. , It is desirable to carry out this surface reforming step multiple times.
化粧仕上げ工程
本発明においては、上記無機系表層改質コーティング組成物による表層改質工程を行ったのちに、化粧用コーティング組成物を、表層改質工程が施されたセメント系構造物の表層改質表面に塗布する化粧仕上げ工程を実施する。これにより、セメント系構造物の表面に耐久性と耐候性にすぐれた化粧仕上げ層を形成することが可能となる。
Decorative Finishing Process In the present invention, after performing the surface layer reforming step with the inorganic surface layer reforming coating composition, the cosmetic coating composition is subjected to the surface layer reforming of the cement-based structure subjected to the surface layer reforming step. Perform a cosmetic finishing process to apply to the quality surface. This makes it possible to form a decorative finishing layer having excellent durability and weather resistance on the surface of the cement-based structure.
本発明において、化粧用コーティング組成物は、ケイ酸塩を主成分として含むケイ酸塩系無機バインダーと無機系顔料とを含んでなる。 In the present invention, the cosmetic coating composition comprises a silicate-based inorganic binder containing a silicate as a main component and an inorganic pigment.
すなわち、この工程における化粧用コーティング組成物は、アルカリ金属およびアルカリ土類金属から選ばれた少なくとも１種のケイ酸塩を主成分として含むケイ酸塩系無機バインダーと無機系顔料と水を含んでなる。この場合のケイ酸塩として好ましい成分は、カリウム、カルシウム、マグネシウム、ナトリウムおよびリチウムのケイ酸塩であり、好ましくは天然のケイ酸質材料を原料とする成分が適宜使用されうる。 That is, the cosmetic coating composition in this step contains a silicate-based inorganic binder containing at least one silicate selected from an alkali metal and an alkaline earth metal as a main component, an inorganic pigment, and water. Become. The preferred component of the silicate in this case is a silicate of potassium, calcium, magnesium, sodium and lithium, and preferably a component made from a natural siliceous material can be appropriately used.
例えば、天然のケイ酸質材料としては、α−石英を主成分とするケイ石微粉末や産業副産物であるシリカフューム、フライアッシュなどを用いることができ、含有ケイ酸塩としては、ケイ酸カリウム、ケイ酸ナトリウム、ケイ酸リチウムないしこれらの混合成分を含むことが望ましい。 For example, as a natural siliceous material, fine silicate powder containing α-quartz as a main component, silica fume, which is an industrial by-product, fly ash, etc. can be used, and as a contained silicate, potassium silicate, etc. can be used. It is desirable to include sodium silicate, lithium silicate or a mixture thereof.
本発明における化粧用コーティング組成物は、水溶液ないし懸濁液（スラリー）の状態として用いられ、この場合の溶媒は、好ましくは水ないし水性媒体である。 The cosmetic coating composition in the present invention is used in the state of an aqueous solution or a suspension (slurry), and the solvent in this case is preferably a water or an aqueous medium.
化粧用コーティング組成物に占めるケイ酸塩の配合比（固形分）は、１０〜５０質量％が好ましく、さらに好ましくは１５〜４０質量％であり、特に好ましくは、２０〜３０質量％である。 The compounding ratio (solid content) of the silicate in the cosmetic coating composition is preferably 10 to 50% by mass, more preferably 15 to 40% by mass, and particularly preferably 20 to 30% by mass.
さらに、該化粧用コーティング組成物は、無機顔料を含有している。無機顔料としては、有色のみならず無色ないしクリアーのものを含む。 Further, the cosmetic coating composition contains an inorganic pigment. Inorganic pigments include not only colored pigments but also colorless or clear pigments.
この無機顔料は、目的とする化粧仕上げの色調や表面テクスチャーに応じて、従来公知の種類ならびに含有量範囲が適宜選択し得るが、ケイ酸塩系無機バインダーとの相容性等を考慮して選択することが望ましい。 The conventionally known type and content range of this inorganic pigment can be appropriately selected according to the desired color tone and surface texture of the makeup finish, but in consideration of compatibility with the silicate-based inorganic binder and the like. It is desirable to select.
本発明の特に好ましい態様においては、上記無機系顔料は、体質顔料からなることが好ましく、たとえば、シリカなどのケイ酸塩系体質顔料が好ましく用いられ得る。顔料成分として上記のような無機体質顔料を使用することによって、紫外線による変色や退色に対する抵抗性にすぐれた化粧仕上げが可能となり、長期間にわたって美感を維持する化粧層となる。 In a particularly preferable embodiment of the present invention, the inorganic pigment is preferably composed of an extender pigment, and for example, a silicate-based extender pigment such as silica can be preferably used. By using the above-mentioned inorganic pigment as a pigment component, it is possible to achieve a makeup finish having excellent resistance to discoloration and fading due to ultraviolet rays, and it becomes a makeup layer that maintains a beautiful feeling for a long period of time.
なお、本発明における上記化粧用コーティング組成物は、本質的に無機系組成物であって樹脂系成分を主要成分として含有するものではないが、分散性能やレベリング特性等の付加的特性の向上のために所定量の樹脂成分を適宜含有させることができる。 Although the cosmetic coating composition in the present invention is essentially an inorganic composition and does not contain a resin-based component as a main component, it can improve additional properties such as dispersion performance and leveling properties. Therefore, a predetermined amount of resin component can be appropriately contained.
化粧用コーティング組成物に占める上記無機系顔料の配合比（固形分）としては、５０〜９５質量％が好ましく、さらに７０〜９０質量％の範囲であることが、上記表面改質効果との組み合わせにおける耐候性にすぐれた化粧機能の良好な発現のために好ましい。 The blending ratio (solid content) of the inorganic pigment in the cosmetic coating composition is preferably 50 to 95% by mass, and more preferably 70 to 90% by mass in combination with the surface modification effect. It is preferable because of the good expression of the cosmetic function having excellent weather resistance.
本発明における工法においては、上述した表層改質工程と化粧仕上げ工程とを複合的に組み合わせることが、耐久性と耐候性にすぐれた化粧仕上げ層を形成する上で特に肝要である。 In the construction method of the present invention, it is particularly important to combine the above-mentioned surface layer reforming step and the decorative finishing step in a complex manner in order to form a decorative finishing layer having excellent durability and weather resistance.
すなわち、表層改質工程においては、化粧用の顔料を含まないか少量のみ含む無機系表層改質コーティング組成物を適用することによって、表面化粧に必要な顔料の使用量を低減することができるだけでなく、表層改質に寄与しない顔料成分を含有させないことによって、改質効果をよりすぐれたものとすることができ、しかも表層改質と表面化粧との機能を一旦分離して、複合的施工によって両者を一体化することによって、より耐久性と耐候性にすぐれた化粧仕上げ層を形成することができるのである。 That is, in the surface reforming step, by applying an inorganic surface reforming coating composition that does not contain or contains only a small amount of cosmetic pigment, it is only possible to reduce the amount of pigment used for surface makeup. By not containing a pigment component that does not contribute to surface reforming, the reforming effect can be improved, and the functions of surface reforming and surface makeup are once separated, and combined construction is performed. By integrating the two, it is possible to form a decorative finishing layer having more durability and weather resistance.
さらにまた、表層改質層の表面に化粧仕上げが施されることによって、表層改質層が下地の機能を果たし、その表面に形成される化粧層がより鮮やかになることから、美感の向上の点でもすぐれている。 Furthermore, by applying a decorative finish to the surface of the surface modified layer, the surface modified layer functions as a base, and the decorative layer formed on the surface becomes more vivid, thereby improving the aesthetic appearance. It is also excellent in terms of points.
本発明における複合的工法による効果を要約すると、以下の通りである。
１）セメント系構造物中の遊離カルシウム成分を、表層改質によって内部に取り込み、一体化した微細結晶を形成し、良好な改質・保護効果を実現する。
２）カルシウム成分とケイ酸質成分との反応により、セメント系構造物の表層に存在する欠損部分にケイ酸カルシウムの安定相によって改質される。
３）紫外線や物理的要因（酸性雨、炭酸ガス、NOX、SOX、塩化物イオン等）により劣化することのない耐久性・耐候性にすぐれた、塗り替えの必要性のない表面化粧層を得ることができる。
４）結晶構造体は微細細孔を有する多孔質の塗膜構造を形成し、空隙部が水酸基を含むことから、表面に付着した汚れは雨等で流れ落とされることになり、耐汚染性にすぐれた表面化粧層が形成される。
５）形成される表面化粧層は本質的に無機系材料層からなり静電気を帯びないことから、汚れが付着し難い。
６）顔料成分として無機体質顔料を使用することによって、紫外線による変色や退色に対する抵抗性にすぐれた化粧仕上げが可能となり、長期間にわたって美感を維持する化粧層となる。
７）セメント系構造物内部の水分の外界との間の出入りを阻害することがないので、アルカリ骨材反応を抑止することができ、また、エフロの溶出の問題も防止され、メンテナンスフリーを実現し得る耐久性・耐候性を得ることができる。
８）表層改質層の表面に化粧仕上げが施されることによって、表層改質層が下地の機能を果たし、その表面に形成される化粧層がより鮮やかに形成されることから、化粧層の美感のさらなる向上を図ることができる。すなわち、本発明においては、表層改質工程と化粧仕上げ工程とを分離して別個の工程として施工することによって機能分離するとともに、これら２工程を一連の施工工程として複合的に組み合わせた点が重要である。
９）無機系材料の含有比率が高いため、形成された表面保護化粧塗膜の劣化に伴うチョーキングが発生しない。
１０）無機質系コーティング組成物によって形成された塗膜組織はポーラス構造を有しているため、外部からの汚れが付着しにくい。
１１）本発明の表面保護化粧工法を適用する過程ないし当該コーティング組成物の製造プロセスにおいてＣＯ２の排出量を低減させることができる。
The effects of the combined construction method in the present invention are summarized as follows.
1) The free calcium component in the cement-based structure is taken into the inside by surface modification to form integrated fine crystals, and a good modification / protection effect is realized.
2) By the reaction between the calcium component and the siliceous component, the defective portion existing on the surface layer of the cement-based structure is modified by the stable phase of calcium silicate.
3) Obtain a surface decorative layer with excellent durability and weather resistance that does not deteriorate due to ultraviolet rays or physical factors (acid rain, carbon dioxide, NOX, SOX, chloride ions, etc.) and does not require repainting. Can be done.
4) The crystal structure forms a porous coating film structure with fine pores, and since the voids contain hydroxyl groups, dirt adhering to the surface is washed away by rain or the like, resulting in stain resistance. An excellent surface decorative layer is formed.
5) The surface decorative layer to be formed is essentially composed of an inorganic material layer and is not charged with static electricity, so that dirt does not easily adhere to it.
6) By using an inorganic pigment as a pigment component, it is possible to make a makeup finish having excellent resistance to discoloration and fading due to ultraviolet rays, and it becomes a makeup layer that maintains a beautiful feeling for a long period of time.
7) Since it does not block the inflow and outflow of water inside the cement-based structure to the outside world, it is possible to suppress the alkali-aggregate reaction, and the problem of elution of efro is also prevented, resulting in maintenance-free operation. Durability and weather resistance that can be obtained can be obtained.
8) By applying a decorative finish to the surface of the surface modified layer, the surface modified layer functions as a base, and the decorative layer formed on the surface is formed more vividly. It is possible to further improve the aesthetic feeling. That is, in the present invention, it is important that the surface layer reforming process and the decorative finishing process are separated and performed as separate processes to separate the functions, and that these two processes are combined as a series of construction processes in a complex manner. Is.
9) Since the content ratio of the inorganic material is high, chalking due to deterioration of the formed surface protective decorative coating film does not occur.
10) Since the coating film structure formed by the inorganic coating composition has a porous structure, it is difficult for stains from the outside to adhere.
11) CO2 emissions can be reduced in the process of applying the surface protection cosmetic method of the present invention or in the process of manufacturing the coating composition.
本発明の表面保護化粧工法で得られた塗膜と従来の樹脂系塗料を用いて得られた塗膜について、耐久性・耐候性試験（促進耐候性試験）等の塗膜性能を比較検討した結果を、以下説明する。 The coating film obtained by the surface protection cosmetic method of the present invention and the coating film obtained by using the conventional resin-based paint were compared and examined for coating film performance such as durability / weather resistance test (accelerated weather resistance test). The results will be described below.
なお、以下の実施例および比較例において、促進耐候性試験は次の条件で行った。 In the following examples and comparative examples, the accelerated weather resistance test was conducted under the following conditions.
＜促進耐候性試験＞
促進耐候性試験のための試験機として、メタルハライドランプ式促進耐候性試験機（岩崎電気社製「アイスーパーＵＶテスター（ＳＵＶ−Ｗ１５１）」）を用い、以下の条件で行った。
<Promoted weather resistance test>
As a testing machine for the accelerated weather resistance test, a metal halide lamp type accelerated weather resistance tester (“Eye Super UV Tester (SUV-W151)” manufactured by Iwasaki Electric Co., Ltd.) was used under the following conditions.
照射条件：照射温度６３℃／湿度５０％、休止温度７０℃／湿度９０％、紫外線照度８０μｍ
サイクル：照射６時間→結露２時間→休止６分→シャワー３０秒（以下繰り返し）
サイクル数：１００時間で１３サイクル
実施例１
無機系表層改質コーティング組成物として、ケイ酸カリウム：１０〜２０質量％、ケイ酸ナトリウム：１２〜２０質量％、ケイ酸リチウム：０．１〜０．２質量％、シリカ系体質顔料：１〜５質量％、その他（分散剤等）：５〜７質量％、残部が水からなる組成物（固形分率６０％）を、スレート板の表面に塗工し、常温下で乾燥し表層改質した。スレート板表面層に形成された表層改質層の厚さは、約３〜５mm程度と認められた。
Irradiation conditions: Irradiation temperature 63 ° C / humidity 50%, rest temperature 70 ° C / humidity 90%, ultraviolet illuminance 80 μm
Cycle: Irradiation 6 hours → Condensation 2 hours → Pause 6 minutes → Shower 30 seconds (repeated below)
Number of cycles: 13 cycles in 100 hours
Example 1
As an inorganic surface modified coating composition, potassium silicate: 10 to 20% by mass, sodium silicate: 12 to 20% by mass, lithium silicate: 0.1 to 0.2% by mass, silica-based extender pigment: 1. ~ 5% by mass, others (dispersant, etc.): 5 to 7% by mass, the balance is composed of water (solid content 60%), coated on the surface of the slate plate, dried at room temperature and surface modified. Quality. The thickness of the surface modified layer formed on the surface layer of the slate plate was found to be about 3 to 5 mm.
次いで、上記表層改質層の表面に、ケイ酸塩を主成分として含むケイ酸塩系無機バインダーとして、ケイ酸カリウム：１０〜２０質量％、ケイ酸ナトリウム：１２〜２０質量％、ケイ酸リチウム：０．１〜０．２質量％、無機系顔料として、シリカ系体質顔料：１〜５質量％、その他（分散剤等）：５〜７質量％、残部が水からなる組成物（固形分率６０％）からなる化粧用コーティング組成物を塗工し、常温下で乾燥し、厚さ約０．５〜１mmの化粧塗膜層を形成した。 Next, as a silicate-based inorganic binder containing silicate as a main component on the surface of the surface modification layer, potassium silicate: 10 to 20% by mass, sodium silicate: 12 to 20% by mass, lithium silicate. : 0.1 to 0.2% by mass, as an inorganic pigment, a silica-based extender pigment: 1 to 5% by mass, other (dispersant, etc.): 5 to 7% by mass, and a composition (solid content) in which the balance is water. A cosmetic coating composition having a rate of 60%) was applied and dried at room temperature to form a decorative coating layer having a thickness of about 0.5 to 1 mm.
上記塗膜形成された試料に対して、上述した促進耐候性試験を行った。 The above-mentioned accelerated weather resistance test was performed on the sample on which the coating film was formed.
塗膜性能をまとめると以下の通りである。 The coating film performance is summarized below.
耐久性・耐候性：
促進耐候性試験によるメタルハライド７００時間（サンシャインウェザオメーター７０００時間に相当）経過後においても良好な塗膜性能が維持された。
Durability / weather resistance:
Good coating film performance was maintained even after 700 hours of metal halide (corresponding to 7000 hours of sunshine weather meter) by the accelerated weather resistance test.
水の分子は通さず水蒸気を通す膜が形成されるため、コンクリートの水和反応を阻害しない膜をつくり、コンクリート残留水分の蒸発に伴う塗膜の浮きや剥がれも発生しない。紫外線波長による塗膜劣化が無いためにチョーキング等の現象が起きない。塗膜性能（促進耐候性試験）は２０年以上良好な状態が保持される。（塗り替えはほとんど不要）
耐汚染性：
静電気を帯びない為、汚れが固着せず、雨で流れ落ちる。
Since a film that does not allow water molecules to pass through and allows water vapor to pass through is formed, a film that does not inhibit the hydration reaction of concrete is formed, and the coating film does not float or peel off due to evaporation of residual water in the concrete. Since there is no deterioration of the coating film due to the ultraviolet wavelength, phenomena such as chalking do not occur. The coating film performance (accelerated weather resistance test) is maintained in good condition for 20 years or more. (Almost no repainting required)
Contamination resistance:
Since it is not charged with static electricity, dirt does not stick and it runs off in the rain.
耐火災性：
不燃性であり、火災時にも有害なガスを発生させることはない。
Fire resistance:
It is nonflammable and does not generate harmful gas even in the event of a fire.
表面硬度：
フッ素樹脂塗膜に比べると硬く、洗浄による傷が付きにくいが、クラックに対する追従性はフッ素樹脂塗膜には多少劣るものの実用上問題なし。（鉛筆硬度：６Ｈ〜９Ｈ）
メンテナンス性：
シーリングの雨筋汚れも目立たず実質的にメンテナンスフリーである。
surface hardness:
It is harder than the fluororesin coating film and is not easily scratched by cleaning, but its ability to follow cracks is slightly inferior to that of the fluororesin coating film, but there is no problem in practical use. (Pencil hardness: 6H-9H)
Maintainability:
The rain streaks on the ceiling are not noticeable and are virtually maintenance-free.
意匠性：
意匠性に悪影響を与えることなく基材を保護する。
Creativity:
Protects the substrate without adversely affecting the design.
意匠替えメンテナンス等による上塗り性：
樹脂系を含むほとんどの材料がそのまま上塗り可能。
Topcoatability due to design change maintenance, etc .:
Most materials including resin can be overcoated as they are.
施工性：
下地のコンクリートが多少水分を含んでいても施工可能であり、塗り重ねの間隔が短くてすむ点で有利。
Workability:
It can be applied even if the underlying concrete contains some water, which is advantageous in that the interval between recoating can be short.
経済性：
同一材料２回塗りで追い塗り施工が可能なため、工期も含めて経済的である。またセルフクリーニング効果によりランニングコストも削減できる。
Economical:
It is economical, including the construction period, because it is possible to perform additional coating by applying the same material twice. In addition, the running cost can be reduced due to the self-cleaning effect.
比較例１
一液反応硬化型フッ素樹脂エマルジョン：６６．０質量％、着色剤・体質顔料：１８．０質量％、添加剤：９．０質量％、および残部が水からなるフッ素系塗料組成物を、スレート板の表面に塗工し、常温下で乾燥し、厚さ約０．５〜１mmの塗膜を形成した。
Comparative Example 1
A slate of a fluororesin composition consisting of a one-component reaction-curable fluororesin emulsion: 66.0% by mass, a colorant / extender pigment: 18.0% by mass, an additive: 9.0% by mass, and the balance of water. The surface of the plate was coated and dried at room temperature to form a coating film having a thickness of about 0.5 to 1 mm.
上記塗膜形成された試料に対して、上述した促進耐候性試験を行った。 The above-mentioned accelerated weather resistance test was performed on the sample on which the coating film was formed.
塗膜性能をまとめると以下の通りである。 The coating film performance is summarized below.
耐久性・耐候性：
促進耐候性試験によるメタルハライド４００時間（サンシャインウェザオメーター４０００時間に相当）経過後において急激に低下した。
Durability / weather resistance:
After 400 hours of metal halide (corresponding to 4000 hours of sunshine weather meter) by the accelerated weather resistance test, the amount decreased sharply.
一般に常乾フッ素系樹脂塗料はその成分の９０％以上がアクリル樹脂からなるため、常乾での塗装においては焼き付け塗装で言うようなフッ素系樹脂の高い耐候性は乏しい。塗膜自体の寿命も１０〜１５年程度（促進耐候性試験）であり、紫外線によって塗膜が劣化し、チョーキングが現れる。 In general, since 90% or more of the components of an ever-dry fluorine-based resin paint are acrylic resin, the high weather resistance of the fluorine-based resin as in baking coating is poor in the usual-dry coating. The life of the coating film itself is about 10 to 15 years (accelerated weather resistance test), and the coating film is deteriorated by ultraviolet rays, and chalking appears.
耐汚染性：
静電気を帯びるために汚れが固着してしまう。
Contamination resistance:
Dirt sticks because it is charged with static electricity.
耐火災性：
可燃性であり、火災時に有毒なガスを発生する。
Fire resistance:
It is flammable and produces toxic gas in the event of a fire.
表面硬度：
基本的に硬度の高い塗膜なのだが、左記の塗膜に比べると表面が柔らかく、洗浄により傷が付きやすいのでゴミや汚れ等が滞留しやすいが、クラックに対する追従性は比較的良好。
surface hardness:
Although it is basically a coating film with high hardness, the surface is softer than the coating film on the left, and it is easily scratched by cleaning, so dust and dirt are likely to accumulate, but the followability to cracks is relatively good.
メンテナンス性：
シーリング等の雨筋汚れが固着し、洗浄除去が困難である。
Maintainability:
Rain streaks such as sealing are stuck and difficult to clean and remove.
意匠性：
全面的に樹脂塗膜特有の仕上がりとなる。
Creativity:
The finish is peculiar to the resin coating film on the entire surface.
意匠替えメンテナンス等による上塗り性：
上塗りは可能だが、塗膜劣化した箇所の補修が必要となる。
Topcoatability due to design change maintenance, etc .:
Top coating is possible, but it is necessary to repair the deteriorated part of the coating film.
施工性：
施工面のコンクリートの含水量が施工に影響する。塗り重ねの乾燥時間が必要となる。
Workability:
The water content of concrete on the construction surface affects the construction. Recoating drying time is required.
経済性：
塗り重ね回数が多く乾燥時間が必要となり、工期もかかりコストがかかる。定期的な塗り替えが必要なため、不可避的にランニングコストが発生する。
Economical:
The number of recoatings is large, drying time is required, the construction period is long, and the cost is high. Running costs are inevitably incurred due to the need for regular repainting.
Claims (7)
ケイ酸塩を主成分として含有する無機系表層改質コーティング組成物を前記セメント系構造物の表面に塗布し、これを表層に含浸させる表層改質工程と、
ケイ酸塩を主成分として含むケイ酸塩系無機バインダーと無機系顔料とを含んでなる化粧用コーティング組成物を、前記表層改質工程が施された前記セメント系構造物の表層改質表面に塗布する化粧仕上げ工程とを含んでなり、
前記セメント系構造物の表面に耐久性と耐候性にすぐれた化粧仕上げ層を形成することを特徴とする、表面保護化粧工法。 It is a surface protection cosmetic method for cement-based structures that protects the surface or surface layer of cement-based structures and also performs a decorative finish on the surface in an integrated manner.
A surface reforming step of applying an inorganic surface reforming coating composition containing a silicate as a main component to the surface of the cement-based structure and impregnating the surface layer with the composition.
A cosmetic coating composition containing a silicate-based inorganic binder containing a silicate as a main component and an inorganic pigment is applied to the surface-modified surface of the cement-based structure subjected to the surface-layer modification step. Including the makeup finishing process to apply,
A surface protection cosmetic construction method, characterized in that a decorative finishing layer having excellent durability and weather resistance is formed on the surface of the cement-based structure.
前記セメント系構造物の表面に塗布し、これを表層に含浸させる表層改質工程に用いる、 ケイ酸塩を主成分として含有してなる無機系表層改質コーティング組成物Ａと、
前記表層改質工程が施された前記セメント系構造物の表層改質表面に塗布する化粧仕上げ工程に用いる、ケイ酸塩を主成分として含むケイ酸塩系無機バインダーと無機系顔料とを含んでなる化粧用コーティング組成物Ｂ、
との組み合わせからなることを特徴とする、表面保護化粧用組成物キット。 The composition used in the surface protection cosmetic method for cement-based structures according to any one of claims 1 to 6, for protecting the surface or surface layer portion of the cement-based structure and integrally performing a decorative finish on the surface. It ’s a thing,
An inorganic surface reforming coating composition A containing a silicate as a main component, which is used in a surface reforming step of applying the cement-based structure to the surface and impregnating the surface layer with the coating composition A.
It contains a silicate-based inorganic binder containing silicate as a main component and an inorganic pigment used in a cosmetic finishing step of applying to the surface-modified surface of the cement-based structure subjected to the surface modification step. Cosmetic coating composition B,
A surface protection cosmetic composition kit characterized by being composed of a combination with.
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| JPS5995971A (en) * | 1982-11-24 | 1984-06-02 | Inax Corp | Formation of inorganic paint coated film |
| JP2002121901A (en) * | 2000-10-16 | 2002-04-26 | Alpha Kogyo Kk | Reinforcing/repairing method for concrete structure having cracks and infiltration type adhesive composition for it |
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