JP2003313064A - Surface coating plate - Google Patents
Surface coating plateInfo
- Publication number
- JP2003313064A JP2003313064A JP2002122880A JP2002122880A JP2003313064A JP 2003313064 A JP2003313064 A JP 2003313064A JP 2002122880 A JP2002122880 A JP 2002122880A JP 2002122880 A JP2002122880 A JP 2002122880A JP 2003313064 A JP2003313064 A JP 2003313064A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- weight
- water
- parts
- coated plate
- 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.)
- Pending
Links
- 239000011248 coating agent Substances 0.000 title abstract description 13
- 238000000576 coating method Methods 0.000 title abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 239000000835 fiber Substances 0.000 claims abstract description 49
- 239000002245 particle Substances 0.000 claims abstract description 38
- 239000000203 mixture Substances 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 27
- 239000004568 cement Substances 0.000 claims abstract description 25
- 239000003638 chemical reducing agent Substances 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000009472 formulation Methods 0.000 claims description 7
- 229920002978 Vinylon Polymers 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 229920006231 aramid fiber Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 15
- 238000005452 bending Methods 0.000 abstract description 13
- 230000006866 deterioration Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 230000001965 increasing effect Effects 0.000 abstract description 10
- 230000007547 defect Effects 0.000 abstract description 6
- 229920000914 Metallic fiber Polymers 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 24
- 238000004898 kneading Methods 0.000 description 16
- 239000011398 Portland cement Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 238000011161 development Methods 0.000 description 11
- 238000009792 diffusion process Methods 0.000 description 10
- 239000007787 solid Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 230000035699 permeability Effects 0.000 description 9
- 239000010453 quartz Substances 0.000 description 8
- 229910021487 silica fume Inorganic materials 0.000 description 7
- 238000002156 mixing Methods 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 239000010456 wollastonite Substances 0.000 description 4
- 229910052882 wollastonite Inorganic materials 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 101500000959 Bacillus anthracis Protective antigen PA-20 Proteins 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 101000983338 Solanum commersonii Osmotin-like protein OSML15 Proteins 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000004453 electron probe microanalysis Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Bridges Or Land Bridges (AREA)
- Revetment (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、既存のコンクリー
ト製品やコンクリート構造物、金属製構造物などの表面
を被覆するために用いるセメント質の表面被覆板に関
し、特に、既存のコンクリート製品やコンクリート構造
物、金属製構造物などへの劣化要因物質の遮断効果に優
れ、かつ、機械的損傷等といった欠陥が生じることがな
い表面被覆板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cementitious surface coating plate used for coating the surface of an existing concrete product, a concrete structure, a metal structure or the like, and particularly to an existing concrete product or concrete structure. The present invention relates to a surface-coated plate that has an excellent effect of blocking deterioration-causing substances on objects, metal structures, etc. and that does not cause defects such as mechanical damage.
【０００２】[0002]
【従来の技術】コンクリート製品やコンクリート構造物
の塩害を抑制するため、従来より以下のような対策が講
じられている。
ａ）コンクリート製品やコンクリート構造物の表面に、
塗料、防水材等の被覆材を施工し、塩分等を遮断する。
ｂ）コンクリートのかぶり厚さを増すことによって、鉄
筋までの塩分等の侵入を送らせる。
ｃ）コンクリート打設時の水／セメント比を小さくする
ことによって、コンクリートを密実にし、塩分等の侵入
を遅らせる。2. Description of the Related Art Conventionally, the following measures have been taken in order to suppress salt damage of concrete products and concrete structures. a) On the surface of concrete products and concrete structures,
Apply coating materials such as paints and waterproof materials to block out salt. b) By increasing the cover thickness of concrete, it is possible to send salt and the like up to the reinforcing bars. c) By making the water / cement ratio small at the time of placing concrete, the concrete is made solid and the intrusion of salt etc. is delayed.
【０００３】また、金属製構造物、例えば、杭桟橋、浮
体構造物、鋼矢板、鋼管杭、橋梁、橋脚等の防食工法と
しては、従来より以下のような方法が行われている。
ｄ）金属製構造物の表面に、防錆塗料や一般の塗料を施
工し、塗膜を形成する。The following methods have been conventionally used as anticorrosion methods for metal structures such as pile piers, floating structures, steel sheet piles, steel pipe piles, bridges and bridge piers. d) A rust preventive paint or general paint is applied on the surface of the metal structure to form a coating film.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、コンク
リート製品やコンクリート構造物の塩害を抑制するため
の上記ａ）〜ｃ）の方法では、以下のような問題があっ
た。即ちａ）の場合、塗料等を厚塗りできず形成される
塗膜の厚さが薄くなるため、施工不良によるピンホール
の発生や、塗膜のはがれや機械的損傷等といった塗膜の
欠陥を生じやすいという欠点がある。ｂ）とｃ）の方法
では、今後打設するコンクリートには有効な方法である
が、既設のコンクリート製品やコンクリート構造物には
適用することができないという欠点がある。また、金属
製構造物の防食工法である上記ｄ）の方法でも、以下の
ような問題があった。即ちｄ）の場合、塗料等を厚塗り
できず形成される塗膜の厚さが薄くなるため、施工不良
によるピンホールの発生や、塗膜のはがれや機械的損傷
等といった塗膜の欠陥を生じやすいという欠点がある。However, the methods a) to c) for suppressing salt damage of concrete products and concrete structures have the following problems. That is, in the case of a), since the coating film cannot be applied thickly and the thickness of the formed coating film becomes small, pinholes due to defective construction, peeling of the coating film, mechanical damage, etc. It has the drawback of being prone to occur. The methods b) and c) are effective methods for concrete to be placed in the future, but have a drawback that they cannot be applied to existing concrete products or concrete structures. Further, the method d), which is a method for preventing corrosion of a metal structure, has the following problems. That is, in the case of d), since the coating film cannot be applied thickly and the thickness of the formed coating film becomes small, pinholes are generated due to defective construction, and film defects such as peeling and mechanical damage of the coating film occur. It has the drawback of being prone to occur.
【０００５】[0005]
【課題を解決するための手段】本発明者は、上記課題を
解決し、既存のコンクリート製品やコンクリート構造
物、金属製構造物などへの劣化要因物質（例えば、塩化
物イオン等）を遮断することができる表面被覆板につい
て鋭意研究した結果、特定の材料を組み合わせたセメン
ト質の硬化体からなる表面被覆板であれば、該表面被覆
板自体に欠陥が生じることがなく、また、劣化要因物質
も遮断することができることを見出し、本発明を完成し
た。[Means for Solving the Problems] The present inventor has solved the above-mentioned problems and intercepts deterioration factor substances (for example, chloride ions) to existing concrete products, concrete structures, metal structures and the like. As a result of diligent research on a surface-coated plate that can be used, if the surface-coated plate is made of a cementitious hardened material in which specific materials are combined, no defect occurs in the surface-coated plate itself, and a deterioration factor substance. The present invention has been completed by finding that it can also be shut off.
【０００６】即ち、本発明は、少なくとも、セメント、
ポゾラン質微粉末、粒径2mm以下の細骨材、減水剤、及
び水を含む配合物の硬化体からなることを特徴とする表
面被覆板である（請求項１）。さらに、本発明において
は、配合物に、金属繊維及び／又は有機質繊維（請求項
２）、平均粒径3〜20μｍの無機粉末（請求項５）、平
均粒度1mm以下の繊維状粒子又は薄片状粒子（請求項
６）を含むことが好ましいものである。That is, the present invention provides at least a cement,
A surface-coated plate comprising a cured product of a composition containing fine powder of pozzolan, fine aggregate having a particle size of 2 mm or less, a water reducing agent, and water (claim 1). Further, in the present invention, the composition contains metal fibers and / or organic fibers (claim 2), inorganic powder having an average particle size of 3 to 20 μm (claim 5), fibrous particles having an average particle size of 1 mm or less, or flaky particles. It is preferable to include particles (claim 6).
【０００７】[0007]
【発明の実施の形態】以下、本発明について詳細に説明
する。本発明は、少なくとも、セメント、ポゾラン質微
粉末、粒径2mm以下の細骨材、減水剤、及び水を含む配
合物の硬化体からなる表面被覆板である。本発明におい
て、セメントの種類は限定するものではなく、普通ポル
トランドセメント、早強ポルトランドセメント、中庸熱
ポルトランドセメント、低熱ポルトランドセメント等の
各種ポルトランドセメントや高炉セメント、フライアッ
シュセメント等の混合セメントを使用することができ
る。本発明において、硬化体の早期強度を向上しようと
する場合は、早強ポルトランドセメントを使用すること
が好ましく、配合物の流動性を向上しようとする場合
は、中庸熱ポルトランドセメントや低熱ポルトランドセ
メントを使用することが好ましい。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below. The present invention is a surface-coated plate comprising at least a cement, a fine powder of pozzolan, a fine aggregate having a particle size of 2 mm or less, a water reducing agent, and a cured product of a mixture containing water. In the present invention, the type of cement is not limited, and various portland cements such as ordinary Portland cement, early-strength Portland cement, moderate heat Portland cement, low heat Portland cement, blast furnace cement, and fly ash cement are used. be able to. In the present invention, when trying to improve the early strength of the hardened product, it is preferable to use early-strength Portland cement, and when trying to improve the fluidity of the formulation, medium heat Portland cement or low heat Portland cement is used. Preference is given to using.
【０００８】ポゾラン質微粉末としては、シリカフュー
ム、シリカダスト、フライアッシュ、スラグ、火山灰、
シリカゾル、沈降シリカ等が挙げられる。一般に、シリ
カフュームやシリカダストでは、その平均粒径は、1.0
μｍ以下であり、粉砕等をする必要がないので本発明の
ポゾラン質微粉末として好適である。ポゾラン質微粉末
の配合量は、硬化体の強度発現性や緻密性から、セメン
ト100重量部に対して5〜50重量部が好ましい。ポゾラン
質微粉末が少ないと硬化体の強度発現性や緻密性が低下
し、劣化要因物質を遮断することが困難となるので好ま
しくない。ポゾラン質微粉末の添加量が多くなると単位
水量が増大するのでやはり硬化体の強度発現性や緻密性
が低下し、劣化要因物質を遮断することが困難となるの
で好ましくない。As the fine powder of pozzolan, silica fume, silica dust, fly ash, slag, volcanic ash,
Examples thereof include silica sol and precipitated silica. Generally, for silica fume and silica dust, the average particle size is 1.0
Since it is not more than μm and it is not necessary to pulverize it, it is suitable as the pozzolanic fine powder of the present invention. The pozzolanic fine powder is preferably blended in an amount of 5 to 50 parts by weight based on 100 parts by weight of cement, from the viewpoint of strength development and denseness of the hardened product. When the amount of the fine powder of pozzolanic substance is small, the strength development and the denseness of the cured product are deteriorated, and it becomes difficult to block the deterioration factor substance, which is not preferable. When the addition amount of the pozzolanic fine powder is increased, the unit water amount is increased, so that the strength development property and the denseness of the cured product are deteriorated and it becomes difficult to block the deterioration factor substance, which is not preferable.
【０００９】本発明においては、粒径2mm以下の細骨材
が用いられる。ここで、本発明における細骨材の粒径と
は、85％重量累積粒径である。細骨材の粒径が2mmを超
えると、硬化体の緻密性が低下し、劣化要因物質を遮断
することが困難となるので好ましくない。なお、本発明
においては、硬化体の強度発現性や緻密性等から最大粒
径が2mm以下の細骨材を用いることが好ましく、最大粒
径が1.5mm以下の細骨材を用いることがより好ましい。
細骨材としては、川砂、陸砂、海砂、砕砂、珪砂又はこ
れらの混合物を使用することができる。細骨材の配合量
は、硬化体の緻密性や強度発現性、ひび割れ防止の観点
等から、セメント100重量部に対して50〜250重量部が好
ましく、80〜180重量部がより好ましい。In the present invention, fine aggregate having a grain size of 2 mm or less is used. Here, the particle size of the fine aggregate in the present invention is an 85% weight cumulative particle size. If the particle size of the fine aggregate exceeds 2 mm, the denseness of the cured product will be reduced, and it will be difficult to block the deterioration factor substance, which is not preferable. In the present invention, it is preferable to use a fine aggregate having a maximum particle size of 2 mm or less from the strength development property and the denseness of the cured product, and it is more preferable to use a fine aggregate having a maximum particle size of 1.5 mm or less. preferable.
As the fine aggregate, river sand, land sand, sea sand, crushed sand, silica sand or a mixture thereof can be used. The amount of the fine aggregate is preferably 50 to 250 parts by weight, and more preferably 80 to 180 parts by weight with respect to 100 parts by weight of cement, from the viewpoints of the denseness of the cured product, the strength development property, crack prevention, and the like.
【００１０】減水剤としては、リグニン系、ナフタレン
スルホン酸系、メラミン系、ポリカルボン酸系の減水
剤、ＡＥ減水剤、高性能減水剤又は高性能ＡＥ減水剤を
使用することができる。これらのうち、減水効果の大き
な高性能減水剤又は高性能ＡＥ減水剤を使用することが
好ましい。減水剤の配合量は、セメント100重量部に対
して、固形分換算で0.1〜4.0重量部が好ましく、より好
ましくは固形分換算で0.3〜1.5重量部である。セメント
100重量部に対して、減水剤量（固形分換算）が0.1重量
部未満では、混練が困難になるとともに、配合物の流動
性が低く成形などの作業も困難となる。また、硬化体の
緻密性が低下し、劣化要因物質を遮断することが困難と
なるので好ましくない。セメント100重量部に対して、
減水剤量（固形分換算）が4.0重量部を超えると、硬化
体の緻密性や強度発現性が低下し、劣化要因物質を遮断
することが困難となるので好ましくない。なお、減水剤
は、液状又は粉末状どちらでも使用可能である。As the water reducing agent, a lignin type, naphthalene sulfonic acid type, melamine type, polycarboxylic acid type water reducing agent, an AE water reducing agent, a high performance water reducing agent or a high performance AE water reducing agent can be used. Among these, it is preferable to use a high-performance water reducing agent or a high-performance AE water reducing agent having a large water reducing effect. The content of the water reducing agent is preferably 0.1 to 4.0 parts by weight in terms of solid content, and more preferably 0.3 to 1.5 parts by weight in terms of solid content, relative to 100 parts by weight of cement. cement
If the amount of the water-reducing agent (in terms of solid content) is less than 0.1 part by weight relative to 100 parts by weight, kneading becomes difficult, and the fluidity of the compound is low, and operations such as molding become difficult. Further, the denseness of the cured product is lowered, and it becomes difficult to block the deterioration factor substance, which is not preferable. For 100 parts by weight of cement,
If the amount of water-reducing agent (calculated as solid content) exceeds 4.0 parts by weight, the denseness and strength development of the cured product will decrease, and it will be difficult to block the deterioration-causing substance, which is not preferable. The water reducing agent can be used in either liquid form or powder form.
【００１１】水量は、セメント100重量部に対して10〜3
0重量部が好ましく、より好ましくは15〜25重量部であ
る。セメント100重量部に対して、水量が10重量部未満
では、混練が困難になるとともに、配合物の流動性が低
く成形などの作業も困難である。また、硬化体の緻密性
が低下し、劣化要因物質を遮断することが困難となるの
で好ましくない。セメント100重量部に対して、水量が3
0重量部を超えると、硬化体の緻密性や強度発現性が低
下し、劣化要因物質を遮断することが困難となるので好
ましくない。The amount of water is 10 to 3 with respect to 100 parts by weight of cement.
The amount is preferably 0 part by weight, more preferably 15 to 25 parts by weight. When the amount of water is less than 10 parts by weight with respect to 100 parts by weight of cement, kneading becomes difficult, and the fluidity of the mixture is low, and work such as molding is also difficult. Further, the denseness of the cured product is lowered, and it becomes difficult to block the deterioration factor substance, which is not preferable. 3 parts of water for 100 parts by weight of cement
If the amount exceeds 0 parts by weight, the denseness and strength development of the cured product will decrease, and it will be difficult to block the deterioration-causing substance, which is not preferable.
【００１２】本発明においては、硬化体の曲げ強度や破
壊強度を大幅に高める観点から、前記配合物に金属繊維
及び／又は有機質繊維を含ませることが好ましい。金属
繊維としては、鋼繊維、アモルファス繊維等が挙げられ
るが、中でも鋼繊維は強度に優れており、またコストや
入手のし易さの点からも好ましいものである。金属繊維
は、長さが2mm以上で、長さ／直径比が20以上のものが
好ましく、長さ2〜30mmで、長さ／直径比が20〜200のも
のがより好ましい。長さが2mm未満では曲げ強度を向上
させる効果が低下するので好ましくない。長さが30mmを
超えると、混練の際ファイバーボールが生じやすくな
る。長さ／直径比が20未満では、同一配合量での本数が
少なくなり、曲げ強度を向上させる効果が低下するので
好ましくない。長さ／直径比が200を越えると、繊維自
身の強度が不足し、張力を受けた際に切れやすくなる。
金属繊維の配合量は、配合物の体積の4％以下が好まし
く、より好ましくは3％以下である。金属繊維の配合量
が多くなると混練時の作業性等を確保するために単位水
量が増大して、硬化体の緻密性や強度発現性が低下し、
劣化要因物質を遮断することが困難となるので、金属繊
維の配合量は前記の量が好ましい。In the present invention, from the viewpoint of significantly increasing the bending strength and the breaking strength of the cured product, it is preferable to include metal fibers and / or organic fibers in the composition. Examples of the metal fiber include steel fiber and amorphous fiber. Among them, steel fiber is preferable because it has excellent strength and is cost and easy to obtain. The metal fiber preferably has a length of 2 mm or more and a length / diameter ratio of 20 or more, more preferably a length of 2 to 30 mm and a length / diameter ratio of 20 to 200. If the length is less than 2 mm, the effect of improving the bending strength decreases, which is not preferable. If the length exceeds 30 mm, fiber balls are likely to occur during kneading. If the length / diameter ratio is less than 20, the number of fibers with the same blending amount is reduced, and the effect of improving the bending strength is reduced, which is not preferable. If the length / diameter ratio exceeds 200, the strength of the fiber itself becomes insufficient, and the fiber is easily broken when subjected to tension.
The content of the metal fiber is preferably 4% or less of the volume of the composition, and more preferably 3% or less. When the blending amount of the metal fibers is increased, the unit water amount is increased in order to ensure workability during kneading, etc., and the denseness and strength development of the cured product decrease,
Since it becomes difficult to block the deterioration factor substance, the above-mentioned amount of the metal fiber is preferable.
【００１３】有機質繊維としては、ビニロン繊維、ポリ
プロピレン繊維、ポリエチレン繊維、アラミド繊維、炭
素繊維等が挙げられるが、中でもビニロン繊維及び／又
はポリプロピレン繊維は強度に優れており、またコスト
や入手のし易さの点からも好ましいものである。有機質
繊維は、長さが2mm以上で、長さ／直径比が20以上のも
のが好ましく、長さ2〜30mmで、長さ／直径比が20〜500
のものがより好ましい。長さが2mm未満では破壊強度を
向上させる効果が低下するので好ましくない。長さが30
mmを超えると、混練の際ファイバーボールが生じやすく
なる。長さ／直径比が20未満では、同一配合量での本数
が少なくなり、破壊強度を向上させる効果が低下するの
で好ましくない。長さ／直径比が500を越えると、繊維
自身の強度が不足し、張力を受けた際に切れやすくな
る。有機質繊維の配合量は、配合物の体積の10％未満が
好ましく、より好ましくは8％以下である。有機質繊維
の配合量が多くなると混練時の作業性等を確保するため
に単位水量が増大して、硬化体の緻密性や強度発現性が
低下し、劣化要因物質を遮断することが困難となるの
で、有機質繊維の配合量は前記の量が好ましい。なお、
本発明においては、金属繊維と有機質繊維を併用するこ
とは差し支えない。Examples of the organic fiber include vinylon fiber, polypropylene fiber, polyethylene fiber, aramid fiber, carbon fiber and the like. Among them, vinylon fiber and / or polypropylene fiber are excellent in strength, and are inexpensive and easily available. It is also preferable in terms of size. The organic fiber preferably has a length of 2 mm or more and a length / diameter ratio of 20 or more, and has a length of 2 to 30 mm and a length / diameter ratio of 20 to 500.
Are more preferred. If the length is less than 2 mm, the effect of improving the breaking strength is reduced, which is not preferable. Length 30
If it exceeds mm, fiber balls are likely to be formed during kneading. If the length / diameter ratio is less than 20, the number of fibers in the same compounding amount will be small and the effect of improving the breaking strength will be reduced, such being undesirable. If the length / diameter ratio exceeds 500, the strength of the fiber itself becomes insufficient, and the fiber easily breaks when subjected to tension. The blending amount of the organic fiber is preferably less than 10% of the volume of the blend, and more preferably 8% or less. When the blending amount of the organic fiber is large, the unit water amount is increased in order to ensure workability during kneading, etc., and the denseness and strength development of the cured product are reduced, making it difficult to block the deterioration factor substances. Therefore, the above-mentioned amount of the organic fiber is preferable. In addition,
In the present invention, the metal fiber and the organic fiber may be used in combination.
【００１４】本発明においては、硬化体の緻密性を高め
て、劣化要因物質を遮断する効果を向上させる観点か
ら、配合物に、平均粒径3〜20μｍ、より好ましくは平
均粒径4〜10μｍの無機粉末を含ませることが好まし
い。無機粉末としては、石英粉末、石灰石粉末、炭化
物、窒化物等が挙げられるが、なかでも石英粉末は、コ
ストの点や硬化体の品質安定性の点から好ましいもので
ある。石英粉末としては、石英や非晶質石英、オパール
質やクリストバライト質のシリカ含有粉末等が挙げられ
る。無機粉末の配合量は、硬化体の強度発現性や緻密性
等から、セメント100重量部に対して50重量部以下が好
ましく、20〜35重量部がより好ましい。In the present invention, from the viewpoint of enhancing the denseness of the cured product and improving the effect of blocking the deterioration-causing substance, the compound has an average particle size of 3 to 20 μm, more preferably 4 to 10 μm. It is preferable to include the above inorganic powder. Examples of the inorganic powder include quartz powder, limestone powder, carbides, nitrides, etc. Among them, quartz powder is preferable from the viewpoints of cost and quality stability of the cured product. Examples of the quartz powder include quartz, amorphous quartz, opalaceous and cristobalite silica-containing powder, and the like. The blending amount of the inorganic powder is preferably 50 parts by weight or less, and more preferably 20 to 35 parts by weight, based on 100 parts by weight of cement, from the viewpoint of strength development and denseness of the cured product.
【００１５】本発明においては、硬化体の靱性を高める
観点から、配合物に、平均粒度が1mm以下の繊維状粒子
又は薄片状粒子を含ませることが好ましい。ここで、粒
子の粒度とは、その最大寸法の大きさ（特に、繊維状粒
子ではその長さ）である。繊維状粒子としては、ウォラ
ストナイト、ボーキサイト、ムライト等が、薄片状粒子
としては、マイカフレーク、タルクフレーク、バーミキ
ュライトフレーク、アルミナフレーク等が挙げられる。
繊維状粒子又は薄片状粒子の配合量は、硬化体の強度発
現性、緻密性や靱性から、セメント100重量部に対して3
5重量部以下が好ましく、10〜25重量部がより好まし
い。なお、繊維状粒子においては、硬化体の靱性を高め
る観点から、長さ／直径の比で表される針状度が3以上
のものを用いるのが好ましい。In the present invention, from the viewpoint of increasing the toughness of the cured product, it is preferable that the compound contains fibrous particles or flaky particles having an average particle size of 1 mm or less. Here, the particle size of a particle is the size of its maximum dimension (particularly its length in the case of fibrous particles). The fibrous particles include wollastonite, bauxite, mullite and the like, and the flaky particles include mica flakes, talc flakes, vermiculite flakes and alumina flakes.
The blending amount of fibrous particles or flaky particles is 3 with respect to 100 parts by weight of cement because of strength development of the cured product, compactness and toughness.
It is preferably 5 parts by weight or less, more preferably 10 to 25 parts by weight. As the fibrous particles, from the viewpoint of increasing the toughness of the cured product, it is preferable to use one having a degree of acicularity represented by a length / diameter ratio of 3 or more.
【００１６】本発明において、配合物の混練方法は、特
に限定するものではなく、例えば、１)水、減水剤以外
の材料を予め混合しておき（プレミックス）、該プレミ
ックス、水、減水剤をミキサに投入し、混練する。２)
水以外の材料を予め混合しておき（プレミックス、ただ
し減水剤は粉末タイプのものを使用する）、該プレミッ
クス、水をミキサに投入し、混練する。３)各材料を、
それぞれ個別にミキサに投入し、混練する。などの方法
が挙げられる。In the present invention, the method of kneading the compound is not particularly limited, and for example, 1) water and materials other than the water reducing agent are mixed in advance (premix), and the premix, water and water reducing agent are used. Add the agent to the mixer and knead. 2)
Materials other than water are mixed in advance (a premix, but a powder-type water reducing agent is used), and the premix and water are put into a mixer and kneaded. 3) Each material
Add to the mixer individually and knead. And the like.
【００１７】混練に用いるミキサは、通常のコンクリー
トの混練に用いられるどのタイプのものでもよく、例え
ば、揺動型ミキサ、パンタイプミキサ、二軸練りミキサ
等が用いられる。混練後、所定の型枠に配合物を投入し
て成形し、その後、養生して本発明の表面被覆板を製造
する。養生は、気中養生や蒸気養生等を行えば良い。The mixer used for kneading may be of any type used for ordinary kneading of concrete, and for example, an oscillating mixer, a pan type mixer, a biaxial kneading mixer or the like is used. After kneading, the mixture is put into a predetermined mold and molded, and then cured to produce the surface-coated plate of the present invention. The curing may be air curing or steam curing.
【００１８】本発明の配合物は、「JIS R 5201（セメン
トの物理試験方法）11.フロー試験」に記載される方法
において、15回の落下運動を行わないで測定したフロー
値が、230mm以上と流動性に優れるものであり、型枠へ
の投入等の作業が容易である。また、本発明の配合物の
硬化体は、150MPa以上の圧縮強度と20MPa以上の曲げ強
度を発現するものであり、該硬化体からなる本発明の表
面被覆板は、機械的損傷等といった欠陥が生じることが
ない。また、本発明の配合物の硬化体は、極めて緻密な
ものであり、該硬化体からなる本発明の表面被覆板は、
既存のコンクリート製品やコンクリート構造物、金属製
構造物などへの劣化要因物質（例えば、塩化物イオン
等）の遮断効果にも優れている。The composition of the present invention has a flow value of 230 mm or more measured by the method described in "JIS R 5201 (Physical test method for cement) 11. Flow test" without 15 drop motions. It has excellent fluidity and can be easily put into the formwork. Further, the cured product of the composition of the present invention exhibits a compressive strength of 150 MPa or more and a bending strength of 20 MPa or more, and the surface-coated plate of the present invention comprising the cured product has defects such as mechanical damage. It never happens. Further, the cured product of the composition of the present invention is extremely dense, and the surface-coated plate of the present invention comprising the cured product is
It also excels in the effect of blocking deterioration factor substances (such as chloride ions) to existing concrete products, concrete structures, and metal structures.
【００１９】本発明の表面被覆板の既存のコンクリート
製品やコンクリート構造物、金属製構造物などへの取付
け方法は、特に限定するものではなく、例えば、
１）接着剤を用いて、コンクリート製品やコンクリート
構造物、金属製構造物などの表面に貼り付ける方法
２）アンカ等を用いて、コンクリート製品やコンクリー
ト構造物、金属製構造物などの表面に固定する方法
などが挙げられる。なお、２）の方法においては、コン
クリート製品やコンクリート構造物、金属製構造物と表
面被覆板との間に、グラウト等の充填材を充填すること
は差し支えない。The method of attaching the surface-coated plate of the present invention to an existing concrete product, concrete structure, metal structure or the like is not particularly limited. For example, 1) using an adhesive, concrete product or Method of sticking to surface of concrete structure, metal structure, etc. 2) Method of fixing to concrete product, concrete structure, metal structure or the like using anchor or the like. In the method 2), it is possible to fill a filler such as grout between the concrete product, the concrete structure, the metal structure and the surface covering plate.
【００２０】本発明の表面被覆板は、該表面被覆板の耐
久性、劣化要因物質の遮断効果、さらには取扱い性等か
ら、厚さが10〜50mmであることが好ましく、15〜30mmで
あることがより好ましい。The surface-coated plate of the present invention preferably has a thickness of 10 to 50 mm, preferably 15 to 30 mm, from the viewpoint of the durability of the surface-coated plate, the effect of blocking deterioration-causing substances, and the handleability. Is more preferable.
【００２１】[0021]
【実施例】以下、実施例により本発明を説明する。
１．使用材料
以下に示す材料を使用した。
１）セメント；低熱ポルトランドセメント（太平洋セメ
ント（株）製）
２）ポゾラン質微粉末；シリカフューム（平均粒径0.7
μｍ）
３）細骨材；珪砂５号
４）金属繊維；鋼繊維（直径：0.2mm、長さ：15mm）
５）有機繊維；ビニロン繊維（直径：0.3mm、長さ：15m
m）
６）高性能ＡＥ減水剤；ポリカルボン酸系高性能ＡＥ減
水剤
７）水；水道水
８）無機粉末；石英粉（平均粒径7μｍ）
９）繊維状粒子；ウォラストナイト（平均長さ0.3mm、
長さ／直径の比4）EXAMPLES The present invention will be described below with reference to examples. 1. Materials used The following materials were used. 1) Cement; low heat Portland cement (manufactured by Taiheiyo Cement Co., Ltd.) 2) Pozzolanic fine powder; Silica fume (average particle size 0.7)
μm) 3) Fine aggregate; Quartz sand No. 5 4) Metal fiber; Steel fiber (diameter: 0.2 mm, length: 15 mm) 5) Organic fiber; Vinylon fiber (diameter: 0.3 mm, length: 15 m)
m) 6) High-performance AE water reducing agent; polycarboxylic acid-based high-performance AE water reducing agent 7) Water; tap water 8) Inorganic powder; Quartz powder (average particle size 7 μm) 9) Fibrous particles; Wollastonite (average length) 0.3 mm,
Length / diameter ratio 4)
【００２２】実施例１
低熱ポルトランドセメント100重量部、シリカフューム3
2.5重量部、細骨材120重量部、高性能ＡＥ減水剤1.0重
量部（セメントに対する固形分）、水22重量部を二軸練
りミキサに投入し、混練した。該配合物のフロー値を、
「JIS R 5201（セメントの物理試験方法）11.フロー試
験」に記載される方法において、15回の落下運動を行わ
ないで測定した。その結果、フロー値は270mmであっ
た。また、前記配合物をφ50×100mmの型枠に流し込
み、20℃で48時間前置き後90℃で48時間蒸気養生した。
該硬化体の圧縮強度（３本の平均値）は210MPaであっ
た。また、前記配合物を４×４×16cmの型枠に流し込
み、20℃で48時間前置き後90℃で48時間蒸気養生した。
該硬化体の曲げ強度（３本の平均値）は25MPaであっ
た。また、前記配合物をφ50×100mmの型枠に流し込
み、20℃で48時間前置き後90℃で48時間蒸気養生した。
該硬化体の透水係数を「地盤工学会基準JGS 0231（土の
透水試験方法）」の変水位透水試験方法で測定した。そ
の結果、水の浸透は認められず、透水係数は０であっ
た。また、前記配合物を10×10×40cmの型枠に流し込
み、20℃で48時間前置き後90℃で48時間蒸気養生した。
該硬化体を人工海水に６ケ月間浸漬した。なお、人工海
水は表１に示す量の各試薬を蒸留水に溶解して調製し
た。浸漬後、硬化体中の塩化物イオンの濃度をＥＰＭＡ
（日本電子(株)製）により測定し、塩化物イオンの拡散
係数を算出した。その結果、塩化物イオンの拡散係数は
0.0085cm2/yearであった。Example 1 100 parts by weight of low heat Portland cement, silica fume 3
2.5 parts by weight, 120 parts by weight of fine aggregate, 1.0 part by weight of high-performance AE water reducing agent (solid content with respect to cement), and 22 parts by weight of water were put into a biaxial kneading mixer and kneaded. The flow value of the formulation is
In the method described in "JIS R 5201 (Physical test method for cement) 11. Flow test", measurement was performed without performing 15 drop motions. As a result, the flow value was 270 mm. Further, the above composition was poured into a mold of φ50 × 100 mm, preliminarily placed at 20 ° C. for 48 hours and then steam-cured at 90 ° C. for 48 hours.
The compression strength (average value of 3 pieces) of the cured product was 210 MPa. Further, the above composition was poured into a mold of 4 × 4 × 16 cm, pre-incubated at 20 ° C. for 48 hours, and then steam-cured at 90 ° C. for 48 hours.
The bending strength (average value of 3 pieces) of the cured product was 25 MPa. Further, the above composition was poured into a mold of φ50 × 100 mm, preliminarily placed at 20 ° C. for 48 hours and then steam-cured at 90 ° C. for 48 hours.
The water permeability of the cured product was measured by the water level permeability test method of “Geotechnical Society Standard JGS 0231 (Soil permeability test method)”. As a result, no water permeation was observed and the water permeability coefficient was 0. Further, the above-mentioned composition was poured into a mold of 10 × 10 × 40 cm, pre-incubated at 20 ° C. for 48 hours and then steam-cured at 90 ° C. for 48 hours.
The cured product was immersed in artificial seawater for 6 months. The artificial seawater was prepared by dissolving each of the reagents shown in Table 1 in distilled water. After the immersion, the concentration of chloride ion in the cured product was adjusted to EPMA.
(Manufactured by JEOL Ltd.) and the chloride ion diffusion coefficient was calculated. As a result, the diffusion coefficient of chloride ion is
It was 0.0085 cm 2 / year.
【００２３】[0023]
【表１】 [Table 1]
【００２４】実施例２
低熱ポルトランドセメント100重量部、シリカフューム3
2.5重量部、細骨材120重量部、高性能ＡＥ減水剤1.0重
量部（セメントに対する固形分）、水22重量部、石英粉
30重量部、鋼繊維(配合物中の体積の２％)を二軸練りミ
キサに投入し、混練した。該配合物のフロー値を実施例
１と同様に測定した。その結果、フロー値は250mmであ
った。また、圧縮強度と曲げ強度も実施例１と同様に測
定した。その結果、圧縮強度は230MPa、曲げ強度は47MP
aであった。また、透水係数を実施例１と同様に測定し
た。その結果、水の浸透は認められず、透水係数は０で
あった。また、塩化物イオンの拡散係数を実施例１と同
様に測定した。その結果、塩化物イオンの拡散係数は0.
0071cm2/yearであった。Example 2 100 parts by weight of low heat Portland cement, silica fume 3
2.5 parts by weight, fine aggregate 120 parts by weight, high-performance AE water reducing agent 1.0 parts by weight (solid content relative to cement), water 22 parts by weight, quartz powder
30 parts by weight of steel fibers (2% of the volume in the mixture) were charged into a biaxial kneading mixer and kneaded. The flow value of the formulation was measured as in Example 1. As a result, the flow value was 250 mm. The compressive strength and bending strength were also measured in the same manner as in Example 1. As a result, compressive strength is 230MPa, bending strength is 47MP
It was a. Further, the water permeability was measured in the same manner as in Example 1. As a result, no water permeation was observed and the water permeability coefficient was 0. The chloride ion diffusion coefficient was measured in the same manner as in Example 1. As a result, the diffusion coefficient of chloride ion is 0.
It was 0071 cm 2 / year.
【００２５】実施例３
低熱ポルトランドセメント100重量部、シリカフューム3
2.5重量部、細骨材120重量部、高性能ＡＥ減水剤1.0重
量部（セメントに対する固形分）、水22重量部、石英粉
30重量部、ウォラストナイト24重量部、鋼繊維(配合物
中の体積の２％)を二軸練りミキサに投入し、混練し
た。該配合物のフロー値を実施例１と同様に測定した。
その結果、フロー値は250mmであった。また、圧縮強度
と曲げ強度も実施例１と同様に測定した。その結果、圧
縮強度は230MPa、曲げ強度は47MPaであった。また、透
水係数を実施例１と同様に測定した。その結果、水の浸
透は認められず、透水係数は０であった。また、塩化物
イオンの拡散係数を実施例１と同様に測定した。その結
果、塩化物イオンの拡散係数は0.0050cm2/yearであっ
た。Example 3 100 parts by weight of low heat Portland cement, silica fume 3
2.5 parts by weight, fine aggregate 120 parts by weight, high-performance AE water reducing agent 1.0 parts by weight (solid content relative to cement), water 22 parts by weight, quartz powder
30 parts by weight, 24 parts by weight of wollastonite, and steel fibers (2% of the volume in the mixture) were charged into a biaxial kneading mixer and kneaded. The flow value of the formulation was measured as in Example 1.
As a result, the flow value was 250 mm. The compressive strength and bending strength were also measured in the same manner as in Example 1. As a result, the compressive strength was 230 MPa and the bending strength was 47 MPa. Further, the water permeability was measured in the same manner as in Example 1. As a result, no water permeation was observed and the water permeability coefficient was 0. The chloride ion diffusion coefficient was measured in the same manner as in Example 1. As a result, the diffusion coefficient of chloride ion was 0.0050 cm 2 / year.
【００２６】実施例４
低熱ポルトランドセメント100重量部、シリカフューム3
2.5重量部、細骨材120重量部、高性能ＡＥ減水剤1.0重
量部（セメントに対する固形分）、水22重量部、石英粉
30重量部、ウォラストナイト24重量部、ビニロン繊維
(配合物中の体積の４％)を二軸練りミキサに投入し、混
練した。該配合物のフロー値を実施例１と同様に測定し
た。その結果、フロー値は240mmであった。また、圧縮
強度と曲げ強度も実施例１と同様に測定した。その結
果、圧縮強度は155MPa、曲げ強度は26MPaであった。ま
た、透水係数を実施例１と同様に測定した。その結果、
水の浸透は認められず、透水係数は０であった。また、
塩化物イオンの拡散係数を実施例１と同様に測定した。
その結果、塩化物イオンの拡散係数は0.0122cm2/yearで
あった。Example 4 100 parts by weight of low heat Portland cement, silica fume 3
2.5 parts by weight, fine aggregate 120 parts by weight, high-performance AE water reducing agent 1.0 parts by weight (solid content relative to cement), water 22 parts by weight, quartz powder
30 parts by weight, wollastonite 24 parts by weight, vinylon fiber
(4% of the volume in the blend) was put into a biaxial kneading mixer and kneaded. The flow value of the formulation was measured as in Example 1. As a result, the flow value was 240 mm. The compressive strength and bending strength were also measured in the same manner as in Example 1. As a result, the compressive strength was 155 MPa and the bending strength was 26 MPa. Further, the water permeability was measured in the same manner as in Example 1. as a result,
No water permeation was observed and the hydraulic conductivity was 0. Also,
The chloride ion diffusion coefficient was measured in the same manner as in Example 1.
As a result, the diffusion coefficient of chloride ion was 0.0122 cm 2 / year.
【００２７】比較例１
低熱ポルトランドセメント100重量部、細骨材120重量
部、高性能ＡＥ減水剤0.4重量部（セメントに対する固
形分）、水30重量部を二軸練りミキサに投入し、混練し
た。該配合物のフロー値を実施例１と同様に測定した。
その結果、フロー値は190mmであった。また、圧縮強度
を実施例１と同様に測定した。その結果、圧縮強度は90
MPaであった。また、塩化物イオンの拡散係数を実施例
１と同様に測定した。その結果、塩化物イオンの拡散係
数は0.3cm2/yearであった。Comparative Example 1 100 parts by weight of low-heat Portland cement, 120 parts by weight of fine aggregate, 0.4 parts by weight of high-performance AE water reducing agent (solid content relative to cement), and 30 parts by weight of water were put into a biaxial kneading mixer and kneaded. . The flow value of the formulation was measured as in Example 1.
As a result, the flow value was 190 mm. The compressive strength was measured in the same manner as in Example 1. As a result, the compressive strength is 90
It was MPa. The chloride ion diffusion coefficient was measured in the same manner as in Example 1. As a result, the diffusion coefficient of chloride ion was 0.3 cm 2 / year.
【００２８】[0028]
【発明の効果】以上説明したように、本発明の表面被覆
板は、流動性に優れる配合物を用いて製造するので、成
形などの作業が容易となる。また、本発明の配合物の硬
化体は、150MPa以上の圧縮強度と20MPa以上の曲げ強度
を発現するものであるので、本発明の表面被覆板は、機
械的損傷等といった欠陥が生じることがない。また、本
発明の配合物の硬化体は、極めて緻密なものであるの
で、本発明の表面被覆板は、既存のコンクリート製品や
コンクリート構造物、金属製構造物などへの劣化要因物
質（例えば、塩化物イオン等）の遮断効果にも優れてい
る。As described above, the surface-coated plate of the present invention is manufactured by using the compound having excellent fluidity, so that the work such as molding becomes easy. Further, since the cured product of the composition of the present invention exhibits a compressive strength of 150 MPa or more and a bending strength of 20 MPa or more, the surface-coated plate of the present invention does not cause defects such as mechanical damage. . Further, since the cured product of the composition of the present invention is extremely dense, the surface-coated plate of the present invention is a deterioration factor substance for existing concrete products, concrete structures, metal structures, etc. (for example, It also has an excellent effect of blocking chloride ions.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０４Ｂ 18:14 Ｃ０４Ｂ 20:00 Ｂ 20:00 14:48 Ｄ 14:48 16:06 Ｅ 16:06 14:38 Ｃ 14:38 24:26 Ｅ 24:26） 111:20 111:20 Ｆターム(参考） 2D018 BA00 2D059 BB39 GG23 4G012 PA03 PA04 PA07 PA08 PA11 PA15 PA19 PA20 PA24 PA27 PA29 PB04 PB31 PC02 PC03 PC04 PC11 PC13 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) C04B 18:14 C04B 20:00 B 20:00 14:48 D 14:48 16:06 E 16:06 14 : 38 C 14:38 24:26 E 24:26) 111: 20 111: 20 F term (reference) 2D018 BA00 2D059 BB39 GG23 4G012 PA03 PA04 PA07 PA08 PA11 PA15 PA19 PA20 PA24 PA27 PA29 PB04 PB31 PC02 PC03 PC04 PC11 PC13
Claims (6)
ゾラン質微粉末、粒径2mm以下の細骨材、減水剤、及び
水を含む配合物の硬化体からなることを特徴とする表面
被覆板。1. A surface coated plate comprising at least a cement, a fine powder of pozzolan, a fine aggregate having a particle size of 2 mm or less, a water reducing agent, and a cured product of a mixture containing water.
維を含む請求項１に記載の表面被覆板。2. The surface-coated plate according to claim 1, wherein the composition contains metal fibers and / or organic fibers.
直径比が20以上の鋼繊維である請求項２記載の表面被覆
板。3. The metal fiber has a length of 2 mm or more and a length /
The surface-coated plate according to claim 2, which is a steel fiber having a diameter ratio of 20 or more.
／直径比が20以上のビニロン繊維、ポリプロピレン繊
維、ポリエチレン繊維、アラミド繊維、炭素繊維から選
ばれる１種以上の繊維である請求項２記載の表面被覆
板。4. The organic fiber is at least one fiber selected from vinylon fiber, polypropylene fiber, polyethylene fiber, aramid fiber and carbon fiber having a length of 2 mm or more and a length / diameter ratio of 20 or more. Item 2. The surface-coated plate according to item 2.
末を含む請求項１〜４のいずれかに記載の表面被覆板。5. The surface-coated plate according to claim 1, wherein the formulation contains an inorganic powder having an average particle size of 3 to 20 μm.
子又は薄片状粒子を含む請求項１〜５のいずれかに記載
の表面被覆板。6. The surface-coated plate according to claim 1, wherein the composition contains fibrous particles or flaky particles having an average particle size of 1 mm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002122880A JP2003313064A (en) | 2002-04-24 | 2002-04-24 | Surface coating plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002122880A JP2003313064A (en) | 2002-04-24 | 2002-04-24 | Surface coating plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003313064A true JP2003313064A (en) | 2003-11-06 |
Family
ID=29538369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002122880A Pending JP2003313064A (en) | 2002-04-24 | 2002-04-24 | Surface coating plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003313064A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006232628A (en) * | 2005-02-25 | 2006-09-07 | Taiheiyo Cement Corp | Pole |
| JP2010006662A (en) * | 2008-06-27 | 2010-01-14 | Mitsubishi Materials Corp | Highly durable concrete composition and method for producing highly durable concrete |
| JP2012166985A (en) * | 2011-02-14 | 2012-09-06 | Kajima Corp | Fiber-reinforced cement paste for jointing, and construction joint method |
-
2002
- 2002-04-24 JP JP2002122880A patent/JP2003313064A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006232628A (en) * | 2005-02-25 | 2006-09-07 | Taiheiyo Cement Corp | Pole |
| JP2010006662A (en) * | 2008-06-27 | 2010-01-14 | Mitsubishi Materials Corp | Highly durable concrete composition and method for producing highly durable concrete |
| JP2012166985A (en) * | 2011-02-14 | 2012-09-06 | Kajima Corp | Fiber-reinforced cement paste for jointing, and construction joint method |
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