JPH02129084A - Cured cement material having coated surface and surface finishing method of cured cement material - Google Patents
Cured cement material having coated surface and surface finishing method of cured cement materialInfo
- Publication number
- JPH02129084A JPH02129084A JP28205388A JP28205388A JPH02129084A JP H02129084 A JPH02129084 A JP H02129084A JP 28205388 A JP28205388 A JP 28205388A JP 28205388 A JP28205388 A JP 28205388A JP H02129084 A JPH02129084 A JP H02129084A
- Authority
- JP
- Japan
- Prior art keywords
- polymer powder
- powder coating
- cured cement
- cement material
- hardened 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
- 239000004568 cement Substances 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims description 20
- 239000000463 material Substances 0.000 title abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 65
- 229920000642 polymer Polymers 0.000 claims abstract description 63
- 238000000576 coating method Methods 0.000 claims abstract description 62
- 239000011248 coating agent Substances 0.000 claims abstract description 57
- 239000008187 granular material Substances 0.000 claims abstract description 18
- 238000005507 spraying Methods 0.000 claims abstract description 8
- 230000003746 surface roughness Effects 0.000 claims abstract description 8
- 239000011236 particulate material Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- 239000004698 Polyethylene Substances 0.000 abstract description 3
- 229920000573 polyethylene Polymers 0.000 abstract description 3
- 239000004576 sand Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000004743 Polypropylene Substances 0.000 abstract description 2
- 229920006334 epoxy coating Polymers 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract description 2
- 239000002923 metal particle Substances 0.000 abstract description 2
- 229920001748 polybutylene Polymers 0.000 abstract description 2
- 229920001155 polypropylene Polymers 0.000 abstract description 2
- 239000010453 quartz Substances 0.000 abstract description 2
- 239000002893 slag Substances 0.000 abstract description 2
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 2
- 239000011324 bead Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000011800 void material Substances 0.000 abstract 1
- 239000011247 coating layer Substances 0.000 description 31
- 239000000567 combustion gas Substances 0.000 description 13
- 238000007751 thermal spraying Methods 0.000 description 13
- 239000007789 gas Substances 0.000 description 11
- 239000003973 paint Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 11
- 239000007921 spray Substances 0.000 description 9
- 238000005259 measurement Methods 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000013618 particulate matter Substances 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 235000010582 Pisum sativum Nutrition 0.000 description 1
- 240000004713 Pisum sativum Species 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002345 surface coating layer Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/48—Macromolecular compounds
- C04B41/4857—Other macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B41/4861—Polyalkenes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分舒］
本発明は表面被覆セメント硬化体及びセメント硬化体の
表面仕上方法に係り、特に厚肉で堅牢な被覆層を有する
表面被覆セメント硬化体及びセメント硬化体の表面仕上
方法に関する。Detailed Description of the Invention [Industrial Application] The present invention relates to a surface-coated hardened cement body and a surface finishing method for a hardened cement body, and particularly relates to a surface-coated hardened cement body having a thick and robust coating layer and a surface-coated hardened cement body having a thick and robust coating layer. This invention relates to a surface finishing method for hardened cement.
［従来の技術］
セメント硬化体は、主にコンクリート構造物やコンクリ
ート製品として用いられ、これらは美観や防水性の付与
あるいはその他の目的でしばしば着色を施すことが要求
されることがある。[Prior Art] Hardened cement bodies are mainly used for concrete structures and concrete products, and these are often required to be colored for aesthetic purposes, waterproofing, or other purposes.
従来、セメント硬化体の着色方法としては、セメント硬
化体中に顔料を混合して着色する方法や硬化後表面に通
常のペイントを用いて塗装する方法が一般的である。し
かし、前者の方法では白華の影響による退色のために、
製造時の鮮やかな色彩を長期間保つことは困難である。Conventionally, methods for coloring a hardened cement body include a method of mixing a pigment into the hardened cement body and coloring the hardened cement body, and a method of painting the surface of the hardened cement body using an ordinary paint. However, in the former method, due to fading due to the influence of efflorescence,
It is difficult to maintain the bright colors at the time of manufacture for a long period of time.
また、後者の方法では、刷毛塗りや吹き付は塗装は、所
望の厚膜が得にくいこと、付着性に問題があること等か
ら十分に肉厚で堅牢な塗膜が得られなかった。In addition, in the latter method, it is difficult to obtain a desired thick film by brushing or spraying, and there are problems with adhesion, so that a sufficiently thick and robust coating film cannot be obtained.
セメント硬化体の表面塗装は、美観のみならず塗料を熱
溶融させると共に無機質粒状物を加熱させる装置。The surface coating of hardened cement is not only aesthetically pleasing, but also uses a device that heats the paint and heats the inorganic granules.
■： ■の装置で燃焼ガスの代わりにプラズマを用いる
ようにした装置。■: A device that uses plasma instead of combustion gas in the device described in ■.
等が用いられる。etc. are used.
また、本発明の方法は、燃焼ガス等の高温気体流中に高
分子粉体塗料或は高分子粉体塗料及び無機質粒状物を分
散させながら、投入するようにした装置によっても実施
することができる。Furthermore, the method of the present invention can also be carried out using an apparatus that allows polymer powder coating or polymer powder coating and inorganic particulate matter to be dispersed and introduced into a high-temperature gas flow such as combustion gas. can.
更に具体的には、本発明の方法は、通常の溶射装置を使
用して実施することができる。溶射装置の機種としては
、ガス式、プラズマ式環各種のものが採用可能である。More specifically, the method of the invention can be carried out using conventional thermal spray equipment. As for the thermal spraying equipment, various gas type and plasma type ring types can be adopted.
なお、本発明において高分子粉体塗料と共に無機質粒状
物を用いる場合、高分子粉体塗料と無機質粒状物とは予
め混合して供給装置より供給しても良く、別個の装置に
より供給するようにしても良い。In addition, when inorganic granules are used together with a polymer powder coating in the present invention, the polymer powder coating and the inorganic granules may be mixed in advance and supplied from a supply device, or they may be supplied from a separate device. It's okay.
また、溶射を行なうに先立ってセメント硬化体はその表
面を予熱しておけば、被覆層の気泡発生防止が一層確実
になると共に、セメント硬化体表面が良く乾燥され、形
成される被覆層とセメント硬化体との付着力が向上する
。In addition, if the surface of the hardened cement body is preheated before thermal spraying, the prevention of air bubbles in the coating layer will be further ensured, and the surface of the hardened cement body will be well dried, and the formed coating layer and cement Adhesion to the cured product is improved.
第１図はガス式溶射装置を用いて、本発明の表面被覆を
行なっている状態を説明する断面図である。FIG. 1 is a sectional view illustrating a state in which a surface coating according to the present invention is applied using a gas thermal spraying apparatus.
第１図において、１は溶射装置の溶射ガンノズルであり
、高分子粉体塗料の供給孔２、搬送エアー吹出孔３、燃
焼ガス供給孔４を有する三重管構造とされている。In FIG. 1, reference numeral 1 denotes a thermal spray gun nozzle of a thermal spraying apparatus, which has a triple-pipe structure having a supply hole 2 for polymer powder coating, a conveying air blow-off hole 3, and a combustion gas supply hole 4.
高分子粉体塗料の供給孔２の噴出口から噴出した高分子
粉体塗料５は、搬送エアー吹出孔３からのエアーにより
搬送されると共に、燃焼ガス供給孔４からの燃焼ガスの
燃焼火炎６により加熱されて溶融状態となり、空隙率が
５％以下、Ｒａが５μｍ以上のセメント硬化体７の表面
に衝突し、該表面に固着して高分子粉体塗料の被覆層８
を形成する。The polymer powder paint 5 ejected from the injection port of the polymer powder paint supply hole 2 is conveyed by air from the conveyance air blow-off hole 3, and the combustion flame 6 of the combustion gas from the combustion gas supply hole 4 is conveyed. It is heated to a molten state, collides with the surface of the hardened cement body 7 with a porosity of 5% or less and an Ra of 5 μm or more, and adheres to the surface to form a coating layer 8 of the polymer powder coating.
form.
形成する被覆層８の厚さはこの溶射時間を変化させるこ
とにより容易に調節することができ、このような本発明
の方法によれば、１回の溶射処理により、０．２〜５ｍ
ｍの厚さの高分子粉体塗料又は無機質粒状物含有高分子
粉体塗料の被覆層を任意に形成することができる。The thickness of the coating layer 8 to be formed can be easily adjusted by changing the thermal spraying time, and according to the method of the present invention, a thickness of 0.2 to 5 m can be formed by one thermal spraying process.
A coating layer of a polymer powder coating or a polymer powder coating containing inorganic particulates having a thickness of m can be arbitrarily formed.
［作用］
本発明においては、高分子粉体塗料又は無機質粒状物含
有高分子粉体塗料は、加熱溶融した状態でセメント硬化
体表面に吹き付けられて固着される。このため、短時間
で厚肉の高分子粉体塗料又は無機質粒状物含有高分子粉
体塗料の被覆層を形成することができる。また、溶剤を
用いる必要もない。[Function] In the present invention, the polymer powder coating or the polymer powder coating containing inorganic particulates is sprayed onto the surface of a hardened cement body in a heated and molten state and is fixed thereon. Therefore, a thick coating layer of a polymer powder coating or a polymer powder coating containing inorganic particulate matter can be formed in a short time. Moreover, there is no need to use a solvent.
しかも、本発明に従って、被塗物であるセメント硬化体
の表面粗さを中心線平均粗さ（Ｒａ）でＲａ≧５．０μ
ｍとなるようにすることにより、表面における気泡の発
生が防止され、これまで塗装困難とされていた低空隙率
の被塗物への高分子粉体塗料又は無機質粒状物含有高分
子粉体塗料の吹き付け、固着による塗装が可能とされる
。形成された被覆層は高い付着力で強固にセメント硬化
体表面に付着される。Furthermore, according to the present invention, the surface roughness of the hardened cement body to be coated is determined by the center line average roughness (Ra) of Ra≧5.0μ.
m, the generation of air bubbles on the surface is prevented, and polymer powder coatings or polymer powder coatings containing inorganic granules can be applied to objects with low porosity, which were previously considered difficult to coat. It is possible to paint by spraying or fixing. The formed coating layer is firmly attached to the surface of the hardened cement body with high adhesion force.
［実施例］
以下に実施例を挙げて本発明をより具体的に説明するが
、本発明はその要旨を超えない限り以下の実施例に限定
されるものではない。[Examples] The present invention will be described in more detail with reference to Examples below, but the present invention is not limited to the following Examples unless the gist thereof is exceeded.
なお、実施例及び比較例において、試料の中心線平均粗
さ（Ｒａ）の測定に使用した測定機及び測定条件は次の
通りである。In addition, in the Examples and Comparative Examples, the measuring equipment and measurement conditions used to measure the center line average roughness (Ra) of the samples are as follows.
測定ｍ ＝東京精密社（製）
サーフコム５５４Ａ型
測定条件−測定長さ＝１０ｍｍ
測定スピード＝０．３ｍｍ／ｓ
カットオフ値ｗ０．８ｍｍ
実施例１
２種類の空隙率のセメント硬化体（空隙率１．１％、４
．５％）を、必要に応じて表面処理を施して表面粗さを
第１表に示す通りとしてものをそれぞれ被塗物とし、第
１図に示されるガス式溶射装置（英国５ｈｏｒｉ社製）
を用い、厚さ１．５ｍｍの被覆層を形成した。具体的な
条件は圧で吹き付ける。Measurement m = Surfcom 554A model manufactured by Tokyo Seimitsu Co., Ltd. Measurement conditions - Measurement length = 10 mm Measurement speed = 0.3 mm/s Cutoff value w 0.8 mm Example 1 Hardened cement bodies with two types of porosity (porosity 1 .1%, 4
．． 5%) was subjected to surface treatment as necessary to obtain a surface roughness as shown in Table 1.
A coating layer with a thickness of 1.5 mm was formed using the following. The specific conditions are to spray with pressure.
なお、研削材の具体例としては、
Ｆ−３１７０（鋳鉄製ショット１７０番５１７０（粒径
２０００〜１１９０μｍ））及びＳ−０７０（鋳鋼製グ
リッド７０番Ｇ７０（粒径１０００〜２９７μｍ））が
挙げられる。また、これら研削材の吹は付は速度は６５
〜１１０ｍ／ｓ程度、吹き付は量は硬度５０〜１００Ｈ
Ｖのセメント硬化体であれば、セメント硬化体の表面積
に対する研削材重量で５０〜２５０ｋｇ／ｍ’程度とさ
れる。Specific examples of the abrasive include F-3170 (cast iron shot No. 170 5170 (particle size 2000-1190 μm)) and S-070 (cast steel grid No. 70 G70 (particle size 1000-297 μm)). . In addition, the blowing speed of these abrasive materials is 65
~110m/s, spraying amount is 50~100H hardness
In the case of a hardened cement body of V, the weight of the abrasive material relative to the surface area of the hardened cement body is about 50 to 250 kg/m'.
酸処理法は、工業用塩酸（３５％水溶液）を水で７倍に
希釈して、塩酸５％水溶液としたものなどでセメント硬
化体の表面を刷毛、タワシを用いて酸洗浄することによ
り行なう。なお、この場合、酸の使用量はセメント硬化
体の表面積に対する上記５％水溶液の使用量で１．５ｋ
ｇ／ｍ’程度とするのが好ましく、酸洗浄後は十分に水
洗いすることが必要とされる。The acid treatment method is performed by diluting industrial hydrochloric acid (35% aqueous solution) 7 times with water to make a 5% aqueous hydrochloric acid solution, and acid-washing the surface of the cement hardened body with a brush or scrubber. . In this case, the amount of acid used is the amount of the above 5% aqueous solution relative to the surface area of the hardened cement, which is 1.5k.
It is preferable to set it to about g/m', and it is necessary to wash thoroughly with water after acid washing.
なお、セメント硬化体の表面が過度に粗いものであると
、セメント硬化体の表面と被覆層との間に空気泡が入り
、被？′ｆ層が剥離しやすくなるという不具合が生じる
恐れがある。従って、本発明においては、セメント硬化
体の表面粗さは５≦Ｒａ≦５０であることが好ましい。In addition, if the surface of the hardened cement material is excessively rough, air bubbles may enter between the surface of the hardened cement material and the coating layer, resulting in damage to the surface of the hardened cement material. There is a risk that the 'f layer may easily peel off. Therefore, in the present invention, the surface roughness of the hardened cement body is preferably 5≦Ra≦50.
また、本発明では、セメント硬化体の空隙率を５％以下
としているが、空隙率が５％を超えるものではもともと
表面が粗いので、あえて表面を粗面化するには及ばない
。従って、本発明に係るセメント硬化体は、空隙率５％
以下、好ましくは２％未満とする。Further, in the present invention, the porosity of the hardened cement body is set to 5% or less, but since the surface of a cement having a porosity exceeding 5% is inherently rough, it is not necessary to roughen the surface. Therefore, the cement hardened body according to the present invention has a porosity of 5%.
Below, it is preferably less than 2%.
本発明においては、このような空隙率５％以下、表面粗
さＲａ≧５．０μｍのセメント硬化体の表面に加熱溶融
した高分子粉体塗料若しくは加熱溶融した高分子粉体塗
料及び無機質粒状体を吹き付け、固着させる。In the present invention, heat-melted polymer powder paint or heat-melted polymer powder paint and inorganic granules are applied to the surface of such a hardened cement body with a porosity of 5% or less and a surface roughness Ra≧5.0 μm. Spray on it and let it stick.
高分子粉体塗料としては、特に制限はなく、各種の高分
子粉体塗料が用いられるが、特に、ポリエチレン、ポリ
プロピレン、ポリブチレン、熱硬化型エポキシ系塗料を
用いることにより、附酸性、耐化学薬品性、耐摩耗性に
優れた被覆層を形成することができるので、極めて有利
である。There are no particular restrictions on the polymer powder coating, and various types of polymer powder coatings can be used.In particular, polyethylene, polypropylene, polybutylene, and thermosetting epoxy coatings can be used to improve acidity and chemical resistance. This is extremely advantageous because a coating layer with excellent properties and abrasion resistance can be formed.
無機質粒状物としては、被Ｎ層に耐摩耗性を付与するた
めには、強固な粒状体であることが要求され、粒子もあ
る一定の粒径範囲内に入っていることが望ましく、この
条件を満たすものであれば材質等には特に制限はない。In order to impart wear resistance to the N layer, the inorganic granules are required to be strong granules, and it is desirable that the particles fall within a certain particle size range. There are no particular restrictions on the material, etc. as long as it satisfies the following.
無機質粒状物としては、ガラスピーズ、石英粒子、砂、
高炉スラグ破砕物、金属粒子等を用いることができる。Examples of inorganic particulates include glass peas, quartz particles, sand,
Crushed blast furnace slag, metal particles, etc. can be used.
これらの粒子の粒径は、過度に小さいとすべり抵抗値の
改良効果が低く、過度に大きいと表面の被覆層から剥離
して、耐摩耗性が不良となる。無機質粒状物の粒径は、
０．１〜３ｍｍの範囲のものが好適である。If the particle size of these particles is too small, the effect of improving the sliding resistance value will be low, and if the particle size is too large, they will peel off from the surface coating layer, resulting in poor wear resistance. The particle size of inorganic granules is
A thickness in the range of 0.1 to 3 mm is suitable.
高分子粉体塗料に無機質粒状物を配合使用する場合、そ
の混合割合は、無機質粒状物の割合が小さいと形成され
る被覆層の耐摩耗性、すべり抵抗値ともに小さくなり、
無機質粒状物の割合が大きいと表面剥離が生じる。この
ため、その混合割合は、高分子粉体塗料１００重量部に
対して無機質粒状物１００ｆｆｉ量部以下、特に２０〜
６０重量部とするのが好適である。When using inorganic particulates in a polymer powder coating, if the proportion of inorganic particulates is small, the abrasion resistance and slip resistance of the formed coating layer will be low.
If the proportion of inorganic particulates is large, surface peeling occurs. Therefore, the mixing ratio is 100 parts by weight or less, especially 20 to 100 parts by weight of the inorganic particulate material to 100 parts by weight of the polymer powder coating.
A suitable amount is 60 parts by weight.
本発明においては、高分子粉体塗料又は無機質粒状物含
有高分子粉体塗料を気体流に搬送させつつ、この高分子
粉体塗料を加熱して溶融状態とする。そしてこの溶融状
態の高分子粉体塗料又は無機質粒状物含有高分子粉体塗
料を含む気体流を前記セメント硬化体に吹き付け、高分
子粉体塗料又は無機質粒状物含有高分子粉体塗料をセメ
ント硬化体表面に衝突させて固着させることにより被覆
層を形成する。In the present invention, the polymer powder coating or the polymer powder coating containing inorganic particulates is conveyed by a gas stream and heated to melt the polymer powder coating. Then, a gas flow containing the molten polymer powder coating or inorganic granule-containing polymer powder coating is sprayed onto the cement hardening body to harden the polymer powder coating or inorganic granule-containing polymer powder coating into the cement. A coating layer is formed by colliding with the body surface and fixing it.
このような吹き付け、固着は、高分子粉体塗料又は無機
質粒状物含有高分子粉体塗料を搬送する気体流発生手段
及び気体流に搬送させている高分子粉体塗料の加熱溶融
手段を有する装置等を用いて実施することができるので
あり、例えば、■； 空気流に高分子粉体塗料又は無機
質粒状物含有高分子粉体塗料を搬送させ、この空気流に
燃焼ガスを混合させることにより高分子粉体塗料を熱溶
融させる、或は、高分子粉体塗料を熱溶融させると共に
無機質粒状物を加熱させる装置。Such spraying and fixing is carried out using an apparatus having a gas flow generating means for conveying the polymer powder coating or the polymer powder coating containing inorganic particulates, and a means for heating and melting the polymer powder coating conveyed by the gas flow. For example, ■; By transporting a polymer powder coating or a polymer powder coating containing inorganic particulates in an air stream and mixing combustion gas with this air stream, the polymer powder coating can be carried out using A device that heats a molecular powder coating or a polymer powder coating and heats an inorganic particulate material.
■： ■の装置で燃焼ガスの代わりにプラズマを用いる
ようにした装置。■: A device that uses plasma instead of combustion gas in the device described in ■.
等が用いられる。etc. are used.
また、本発明の方法は、燃焼ガス等の高温気体流中に高
分子粉体塗料或は高分子粉体塗料及び無機質粒状物を分
散させながら、没入するようにした装置によっても実施
することができる。Furthermore, the method of the present invention can also be carried out using an apparatus in which a polymer powder coating or polymer powder coating and inorganic particulate matter are dispersed and immersed in a high-temperature gas flow such as combustion gas. can.
更に具体的には、本発明の方法は、通常の溶射装置を使
用して実施することができる。溶射装置の機種としては
、ガス式、プラズマ式環各種のものが採用可能である。More specifically, the method of the invention can be carried out using conventional thermal spray equipment. As for the thermal spraying equipment, various gas type and plasma type ring types can be adopted.
なお、本発明において高分子粉体塗料と共に無機質粒状
物を用いる場合、高分子粉体塗料と無機質粒状物とは予
め混合して供給装置より供給しても良く、別個の装置に
より供給するようにしても良い。In addition, when inorganic granules are used together with a polymer powder coating in the present invention, the polymer powder coating and the inorganic granules may be mixed in advance and supplied from a supply device, or they may be supplied from a separate device. It's okay.
また、溶射を行なうに先立ってセメント硬化体はその表
面を予熱しておけば、被覆層の気泡発生防止が一層確実
になると共に、セメント硬化体表面が良く乾燥され、形
成される被覆層とセメント硬化体との付着力が向上する
。In addition, if the surface of the hardened cement body is preheated before thermal spraying, the prevention of air bubbles in the coating layer will be further ensured, and the surface of the hardened cement body will be well dried, and the formed coating layer and cement Adhesion to the cured product is improved.
第１図はガス式溶射装置を用いて、本発明の表面被覆を
行なっている状態を説明する断面図である。FIG. 1 is a sectional view illustrating a state in which a surface coating according to the present invention is applied using a gas thermal spraying apparatus.
第１図において、１は溶射装置の溶射ガンノズルであり
、高分子粉体塗料の供給孔２、搬送エアー吹出孔３、燃
焼ガス供給孔４を有する三重管構造とされている。In FIG. 1, reference numeral 1 denotes a thermal spray gun nozzle of a thermal spraying apparatus, which has a triple-pipe structure having a supply hole 2 for polymer powder coating, a conveying air blow-off hole 3, and a combustion gas supply hole 4.
高分子粉体塗料の供給孔２の噴出口から噴出した高分子
粉体塗料５は、搬送エアー吹出孔３からのエアーにより
搬送されると共に、燃焼ガス供給孔４からの燃焼ガスの
燃焼火炎６により加熱されて溶融状態となり、空隙率が
５％以下、Ｒａが５μｍ以上のセメント硬化体７の表面
に衝突し、該表面に固着して高分子粉体塗料の被覆層８
を形成する。The polymer powder paint 5 ejected from the injection port of the polymer powder paint supply hole 2 is conveyed by air from the conveyance air blow-off hole 3, and the combustion flame 6 of the combustion gas from the combustion gas supply hole 4 is conveyed. It is heated to a molten state, collides with the surface of the hardened cement body 7 with a porosity of 5% or less and an Ra of 5 μm or more, and adheres to the surface to form a coating layer 8 of the polymer powder coating.
form.
形成する被覆層８の厚さはこの溶射時間を変化させるこ
とにより容易に調節することができ、このような本発明
の方法によれば、１回の溶射処理により、０．２〜５ｍ
ｍの厚さの高分子粉体塗料又は無機質粒状物含有高分子
粉体塗料の被覆層を任意に形成することができる。The thickness of the coating layer 8 to be formed can be easily adjusted by changing the thermal spraying time, and according to the method of the present invention, a thickness of 0.2 to 5 m can be formed by one thermal spraying process.
A coating layer of a polymer powder coating or a polymer powder coating containing inorganic particulates having a thickness of m can be arbitrarily formed.
Ｌ作用］
本発明においては、高分子粉体塗料又は無機質粒状物含
有高分子粉体塗料は、加熱溶融した状態でセメント硬化
体表面に吹き付けられて固着される。このため、短時間
で厚肉の高分子粉体塗料又は無機質粒状物含有高分子粉
体塗料の被覆層を形成することができる。また、溶剤を
用いる必要もない。L Effect] In the present invention, the polymer powder coating or the polymer powder coating containing inorganic particulates is sprayed onto the surface of the hardened cement body in a heated and molten state and is fixed thereon. Therefore, a thick coating layer of a polymer powder coating or a polymer powder coating containing inorganic particulate matter can be formed in a short time. Moreover, there is no need to use a solvent.
しかも、本発明に従って、被塗物であるセメント硬化体
の表面粗さを中心線平均粗さ（Ｒａ）でＲａ≧５゜０μ
ｍとなるようにすることにより、表面における気泡の発
生が防止され、これまで塗装困難とされていた低空隙率
の被塗物への高分子粉体塗料又は無機質粒状物含有高分
子粉体塗料の吹き付け、固着による塗装が可能とされる
。形成された被覆層は高い付着力で強固にセメント硬化
体表面に付着される。Moreover, according to the present invention, the surface roughness of the hardened cement body to be coated is determined by the centerline average roughness (Ra) of Ra≧5゜0μ.
m, the generation of air bubbles on the surface is prevented, and polymer powder coatings or polymer powder coatings containing inorganic granules can be applied to objects with low porosity, which were previously considered difficult to coat. It is possible to paint by spraying or fixing. The formed coating layer is firmly attached to the surface of the hardened cement body with high adhesion force.
［実施例］
以下に実施例を挙げて本発明をより具体的に説明するが
、本発明はその要旨を超えない限り以下の実施例に限定
されるものではない。[Examples] The present invention will be described in more detail with reference to Examples below, but the present invention is not limited to the following Examples unless the gist thereof is exceeded.
なお、実施例及び比較例において、試料の中心線平均粗
さ（Ｒａ）の測定に使用した測定機及び測定条件は次の
通りである。In addition, in the Examples and Comparative Examples, the measuring equipment and measurement conditions used to measure the center line average roughness (Ra) of the samples are as follows.
測定機 ：東京精密社（製）
サーフコム５５４Ａ型
測定条件：測定長さ＝１０ｍｍ
測定スピード＝０．３ｍｍ／ｓ
カットオフ値ｗｏ、８ｍｍ
実施例１
２種類の空隙率のセメント硬化体（空隙率１．１％、４
．５％）を、必要に応じて表面処理を施して表面粗さを
第１表に示す通りとしてものをそれぞれ被塗物とし、第
１図に示されるガス式溶射装置（英国５ｈｏｒｉ社製）
を用い、厚さ１．５ｍｍの被覆層を形成した。具体的な
条件は次の通りである。Measuring machine: Surfcom 554A model manufactured by Tokyo Seimitsu Co., Ltd. Measuring conditions: Measuring length = 10 mm Measuring speed = 0.3 mm/s Cutoff value wo, 8 mm Example 1 Hardened cement with two types of porosity (porosity 1 .1%, 4
．． 5%) was subjected to surface treatment as necessary to obtain a surface roughness as shown in Table 1.
A coating layer with a thickness of 1.5 mm was formed using the following. The specific conditions are as follows.
高分子粉体塗料
種 類 ： ポリエチレン
粒 度 ： ８０〜２００μｍ無機質粒状物
種 類 ： 徹粉硅砂
粒 度 ： ０．３〜１．２ｍｍ溶射装置関
係
搬送エアー吹出量 ： １２０ＩＬ／ｍｉｎ燃焼ガス
種類 ： ＬＰガス
溶射ガンとセメント硬化体との間隔：約２０ｃｍ形成し
た被ｒ１層の面積： 約２１０ｃｒｎ”形成された被覆
層の表面状態、付着性能を第１表に示す。Polymer powder coating type: Polyethylene particle size: 80 to 200 μm Inorganic granule type: Thorough silica sand particle size: 0.3 to 1.2 mm Conveying air flow rate related to thermal spray equipment: 120 IL/min Combustion gas type: LP gas Distance between thermal spray gun and hardened cement: Approximately 20 cm Area of formed r1 layer: Approximately 210 crn'' Table 1 shows the surface condition and adhesion performance of the formed coating layer.
なお、表面状態は目視による観察で調べ、付着性能はＪ
ＩＳ Ｋ ５８６９合成樹脂エマルジョンパテ５．
１１付着強さによる剥離試験により調べた。The surface condition was examined by visual observation, and the adhesion performance was determined by J.
IS K 5869 Synthetic resin emulsion putty5.
No. 11 adhesion strength was examined by peel test.
第１表より次のことが明らかである。The following is clear from Table 1.
セメント硬化体の中心線平均粗さ（Ｒａ）が１．０及び
３．５のＮＯ６１〜４では、いずれも溶射後の被覆層表
面には気泡が若干生じ、付着性能も素地と被覆層の境界
面で剥離しており満足な被覆層が得られなかった。これ
に対し、Ｎ０８５〜８は、Ｎ０９１〜４と同じ空隙率の
試料を更に表面が粗くなるように処理したものであるが
、いずれも被覆層表面は気泡がなく緻密であり、付着性
能も良好であった。For NO61-4 with centerline average roughness (Ra) of 1.0 and 3.5 of the hardened cement, some bubbles were formed on the surface of the coating layer after thermal spraying, and the adhesion performance was also poor at the boundary between the substrate and the coating layer. There was peeling on the surface, and a satisfactory coating layer could not be obtained. On the other hand, samples Nos. 085 to 8 have the same porosity as Nos. 091 to 4 and have been treated to make the surface even rougher, but in both cases the surface of the coating layer is dense with no bubbles and has good adhesion performance. Met.
一方、空隙率の大きいＮｏ、９〜１２は、中心線平均粗
さ（Ｒａ）がもとから大といため、表面処理の有無を問
わず被覆層表面及び付着性能も良好であった。On the other hand, samples Nos. 9 to 12 with large porosity had high centerline average roughness (Ra) from the beginning, and therefore had good coating layer surface and adhesion performance regardless of whether or not surface treatment was performed.
［発明の効果］
以上詳述した通り、本発明の表面被覆セメント硬化体に
よれば、
■ 厚肉で耐摩耗性、耐酸性、耐薬８製等に優れる。[Effects of the Invention] As detailed above, according to the surface-coated hardened cement of the present invention, (1) it is thick and has excellent wear resistance, acid resistance, chemical resistance, etc.;
■ 表色の色彩が殆ど退色することがない。■ The color of the table color hardly fades.
■ セメント硬化体との付着力が著しく高い。■ Extremely high adhesion to hardened cement.
■ 気泡等がなく、著しく緻密である。■ There are no bubbles, etc., and it is extremely dense.
等の優れた特長を備える被覆層が表面に形成された表面
被覆セメント硬化体が提供される。従って、本発明の表
面被覆セメント硬化体は、耐久性の高いものであり、高
特性コンクリート構造物あるいはコンクリート二次製品
材料等として工業的に極めて有用である。A surface-coated hardened cement body having a coating layer formed on the surface and having excellent features such as the following is provided. Therefore, the surface-coated hardened cement of the present invention has high durability and is extremely useful industrially as a material for high-performance concrete structures or secondary concrete products.
しかして、本発明のセメント硬化体の表面仕上方法によ
れば、空隙率５％以下のセメント硬化体であれば、どの
ようなセメント硬化体であフても、適宜表面処理を施し
て表面粗さを調整することにより、容易に上記のような
高特性被覆層を形成することができる。According to the surface finishing method for hardened cement of the present invention, any hardened cement with a porosity of 5% or less can be surface-roughened by performing appropriate surface treatment. By adjusting the thickness, a coating layer with high properties as described above can be easily formed.
第１図は本発明のセメント硬化体の表面仕上方法を説明
する断面図である。
１・・・・・・溶射ガンノズル、
２・・・・・・高分子粉体塗料供給孔、３・・・・・・
搬送エアー吹出孔、
４・・・・・・燃焼ガス供給孔、
５・・・・・・高分子粉体塗料、
７・・・・・・セメント硬化体、
８・・・・・・高分子粉体塗料被覆層。
６・・・・・・燃焼火炎、
第１図FIG. 1 is a sectional view illustrating the surface finishing method of a hardened cement body according to the present invention. 1...Thermal spray gun nozzle, 2...Polymer powder coating supply hole, 3...
Conveyance air outlet, 4... Combustion gas supply hole, 5... Polymer powder coating, 7... Hardened cement, 8... Polymer Powder paint coating layer. 6... Combustion flame, Figure 1
Claims (2)
平均粗さ（Ｒａ）で示した値が、Ｒａ≧５．０μｍであ
るセメント硬化体の表面に、加熱溶融した高分子粉体塗
料若しくは加熱溶融した高分子粉体塗料及び無機質粒状
物を吹き付け、固着してなることを特徴とする表面被覆
セメント硬化体。(1) Heat-fused polymers are added to the surface of a hardened cement body whose porosity is 5% or less and whose centerline average roughness (Ra) is Ra≧5.0 μm. A surface-coated hardened cement product characterized by being formed by spraying and fixing a powder coating or a heated and melted polymer powder coating and inorganic granules.
、表面処理して該表面粗さを中心線平均粗さ（Ｒａ）で
示した値が、Ｒａ≧５．０μｍとした後、加熱溶融した
高分子粉体塗料若しくは加熱溶融した高分子粉体塗料及
び無機質粒状物を吹き付け、固着することを特徴とする
セメント硬化体の表面仕上方法。(2) After the surface of a cement hardened body with a porosity of 5% or less is treated so that the surface roughness expressed as center line average roughness (Ra) is Ra≧5.0 μm, A method for finishing the surface of a hardened cement body, which comprises spraying and fixing a heat-melted polymer powder coating or a heat-melted polymer powder coating and an inorganic particulate material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28205388A JPH02129084A (en) | 1988-11-08 | 1988-11-08 | Cured cement material having coated surface and surface finishing method of cured cement material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28205388A JPH02129084A (en) | 1988-11-08 | 1988-11-08 | Cured cement material having coated surface and surface finishing method of cured cement material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02129084A true JPH02129084A (en) | 1990-05-17 |
| JPH0536387B2 JPH0536387B2 (en) | 1993-05-28 |
Family
ID=17647549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28205388A Granted JPH02129084A (en) | 1988-11-08 | 1988-11-08 | Cured cement material having coated surface and surface finishing method of cured cement material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02129084A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6121988A (en) * | 1984-07-11 | 1986-01-30 | 三菱鉱業セメント株式会社 | Surface coating method for cement set body |
-
1988
- 1988-11-08 JP JP28205388A patent/JPH02129084A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6121988A (en) * | 1984-07-11 | 1986-01-30 | 三菱鉱業セメント株式会社 | Surface coating method for cement set body |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0536387B2 (en) | 1993-05-28 |
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