JPH08259294A - Polymer cement composition for repairing concrete structure - Google Patents
Polymer cement composition for repairing concrete structureInfo
- Publication number
- JPH08259294A JPH08259294A JP7087459A JP8745995A JPH08259294A JP H08259294 A JPH08259294 A JP H08259294A JP 7087459 A JP7087459 A JP 7087459A JP 8745995 A JP8745995 A JP 8745995A JP H08259294 A JPH08259294 A JP H08259294A
- Authority
- JP
- Japan
- Prior art keywords
- water
- repairing
- concrete structure
- powder
- cement composition
- 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
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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は既設のコンクリート構造
物やセメントモルタルを使用した構築物等の劣化した部
分を補修するに際して、好適なコンクリート構造物補修
用ポリマーセメント組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polymer cement composition suitable for repairing a concrete structure when repairing a deteriorated part of an existing concrete structure or a structure using cement mortar.
【０００２】[0002]
【従来の技術】コンクリートの構造物は、施工後５〜１
０年経過すると、コンクリート中のアルカリ性が空気中
の二酸化炭素との反応により除かれて中性化する。コン
クリート構造物中の鉄筋は、コンクリートが前述の中性
化によって劣化した表面から雨水が浸入し、このため鉄
筋が酸化され膨張するに至る。そして遂には、コンクリ
ート構造物の表層部は鉄筋の膨張に抗しきれず剥離落下
するので、コンクリート構造物の補修が必要となる。2. Description of the Related Art Concrete structures are 5-1 after construction.
After 0 years, the alkalinity in the concrete is removed by the reaction with carbon dioxide in the air, and the concrete is neutralized. With respect to the reinforcing bars in the concrete structure, rainwater enters from the surface of the concrete that has deteriorated due to the above-mentioned neutralization, which causes the reinforcing bars to be oxidized and expand. Finally, since the surface layer of the concrete structure cannot separate from the expansion of the reinforcing bars and peels off and falls, it is necessary to repair the concrete structure.
【０００３】このようなコンクリート構造物の補修材及
び補修の方法としては、例えば特開平４−１４９０５２
号公報に、セメント、シリカヒューム、エマルジョン
粉、アルミン酸アルカリ及び／又はカルシウムフロロア
ルミネートを含有してなる組成物を水と予め混合し、あ
るいは吹付けノズルの先で水と混合して吹付けを行うコ
ンクリート補修工法が記載されている。また、特公昭６
２−１５５０２号公報には、水分を含む液状のポリマー
セメント組成物と、酸化アルミニウム対二酸化ケイ素の
モル比が１：１〜１：１０の非晶質ケイ酸アルミニウム
との混合物をセメント構造物に塗布して補修を行い、セ
メント構造物と補修材との境界部分を非透水性とする補
修方法が記載されている。As a repairing material and a repairing method for such a concrete structure, for example, JP-A-4-149052 is known.
Japanese Patent Laid-Open Publication No. 2004-242242, a composition containing cement, silica fume, emulsion powder, alkali aluminate and / or calcium fluoroaluminate is premixed with water, or sprayed by mixing with water at the tip of a spray nozzle. The concrete repair construction method to perform is described. In addition, Japanese public Sho6
No. 2-15502 discloses a cement structure comprising a mixture of a liquid polymer cement composition containing water and an amorphous aluminum silicate having a molar ratio of aluminum oxide to silicon dioxide of 1: 1 to 1:10. There is described a repairing method in which the boundary portion between the cement structure and the repair material is made water-impermeable by applying and repairing.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前記特
開平４−１４９０５２号公報に記載の技術は、吹付けに
よる補修であるために、後述するような機能の異なる補
修材を積層させる補修に際しては施工厚み等の調整が不
可能である。また、各補修材の境界を明確に識別するこ
とができないため、所定量の適正な補修を行うことが容
易でなく、各補修材を取り違えやすい等の施工上の問題
があり、小規模な補修に際しては特に補修費が割高にな
るという問題があった。また、特公昭６２−１５５０２
号公報に示される技術では、液状のポリマーセメント組
成物をその他の粉末成分及び水と混合するために、水分
量を一定値に保つことが困難で、強度等の品質のばらつ
きが大きく、かつ液状のポリマーセメント組成物の粘性
が高いために均一混合が難しいという問題があった。However, since the technique disclosed in the above-mentioned Japanese Patent Laid-Open No. 4-149052 is repair by spraying, the repair is performed by laminating repair materials having different functions as described later. It is impossible to adjust the thickness. In addition, since the boundary of each repair material cannot be clearly identified, it is not easy to carry out a proper amount of proper repair, and there are construction problems such as it is easy to mistake each repair material. At that time, there was a problem that repair costs were particularly high. In addition, Japanese Examined Patent Publication Sho 62-15502
In the technique disclosed in Japanese Patent Publication, since a liquid polymer cement composition is mixed with other powder components and water, it is difficult to keep the water content at a constant value, and the quality such as strength varies widely, and the liquid There is a problem that it is difficult to uniformly mix the polymer cement composition because of its high viscosity.
【０００５】本発明はこのような事情に鑑みてなされた
もので、中性化しにくい補修材を提供し、機能の異なる
複数の補修材を組み合わせて補修する場合には、施工厚
みの識別が容易にでき、補修材を取り違えることがな
く、かつ品質のばらつきを生じることが少ないコンクリ
ート構造物補修用ポリマーセメント組成物を提供するこ
とを目的とする。The present invention has been made in view of the above circumstances, and provides a repair material which is difficult to be neutralized, and when repairing a plurality of repair materials having different functions in combination, the construction thickness can be easily identified. It is an object of the present invention to provide a polymer cement composition for repairing a concrete structure, which is capable of improving the quality, does not mix up the repair materials, and causes less variation in quality.
【０００６】[0006]
【課題を解決するための手段】前記目的に沿う請求項１
記載のコンクリート構造物補修用ポリマーセメント組成
物は、セメント、乾燥した骨材、粉末状水溶性樹脂、減
水剤粉末、及び消泡剤粉末を含有した無水の混合粉末と
水を混合して構成されている。また、請求項２記載のコ
ンクリート構造物補修用ポリマーセメント組成物は、請
求項１記載の組成物において、前記セメント、骨材、粉
末状水溶性樹脂、減水剤粉末、及び消泡剤粉末は、セメ
ントを１とした場合、それぞれ重量比で、１．０〜２．
５、０．０３〜０．２、０．００５〜０．０５、０．０
００５〜０．００３としている。請求項３記載のコンク
リート構造物補修用ポリマーセメント組成物は、請求項
１又は２記載の組成物において、更に、長さ３ｍｍ乃至
３０ｍｍの繊維分を、セメント１に対し、重量比で０．
００２〜０．０６の範囲で含んでいる。請求項４記載の
コンクリート構造物補修用ポリマーセメント組成物は、
請求項１〜３のいずれか１項に記載の組成物において、
更に、着色剤を添加している。請求項５記載のコンクリ
ート構造物補修用ポリマーセメント組成物は、請求項１
〜４のいずれか１項に記載の組成物において、前記骨材
が高炉水砕スラグと珪砂との混合物で構成されている。
そして、請求項６記載のコンクリート構造物補修用ポリ
マーセメント組成物は、請求項１〜４のいずれか１項に
記載の組成物において、前記骨材が転炉スラグで構成さ
れている。A method according to the above-mentioned object.
A concrete structure repairing polymer cement composition described, cement, dried aggregate, powdered water-soluble resin, water reducing agent powder, and an anhydrous mixed powder containing a defoaming agent powder is mixed with water and composed. ing. The polymer cement composition for concrete structure repair according to claim 2 is the composition according to claim 1, wherein the cement, aggregate, powdery water-soluble resin, water reducing agent powder, and defoaming agent powder are When the cement is 1, the weight ratio is 1.0 to 2.
5, 0.03-0.2, 0.005-0.05, 0.0
It is set to 005 to 0.003. The polymer cement composition for repairing a concrete structure according to claim 3 is the composition according to claim 1 or 2, further comprising a fiber component having a length of 3 mm to 30 mm in a weight ratio of 0.1 to cement 1.
It is included in the range of 002 to 0.06. The polymer cement composition for repairing a concrete structure according to claim 4,
The composition according to any one of claims 1 to 3,
Furthermore, a coloring agent is added. A polymer cement composition for repairing a concrete structure according to claim 5, wherein
The composition according to any one of claims 1 to 4, wherein the aggregate is composed of a mixture of granulated blast furnace slag and silica sand.
A polymer cement composition for repairing a concrete structure according to claim 6 is the composition according to any one of claims 1 to 4, wherein the aggregate is composed of a converter slag.
【０００７】[0007]
【作用】本発明のコンクリート構造物補修用ポリマーセ
メント組成物で構成された躯体補修材は、ひび割れ箇所
等の凹部に充填積層され、損傷したコンクリート構造物
の機械的強度を回復し維持させるために使用される強度
付与材であって、セメント、骨材、粉末状水溶性樹脂、
減水剤粉末、及び消泡剤粉末を含有した無水の混合粉末
と水を混合している。前記骨材は、珪砂、高炉水砕スラ
グ、アルミノシリケート質の中空粒子等の各種のものが
使用できる。[Function] A skeleton repair material composed of the polymer cement composition for repairing a concrete structure of the present invention is filled and laminated in a recess such as a cracked portion to recover and maintain the mechanical strength of a damaged concrete structure. A strength imparting material used, such as cement, aggregate, powdery water-soluble resin,
Water is mixed with an anhydrous mixed powder containing a water reducing agent powder and a defoaming agent powder. As the aggregate, various materials such as silica sand, granulated blast furnace slag, and aluminosilicate hollow particles can be used.
【０００８】特に高炉水砕スラグは、製鉄過程で発生す
る高温のスラグを水冷、粉砕してなる粒径が０．０７５
〜２ｍｍの乾燥した骨材であり、安価な上に材料自体の
アルカリ性が高いために、コンクリート構造物の中性化
を阻止する作用がある。本発明に用いるセメントは、通
常のポルトランドセメントの他、鉄の精錬工程で発生す
るスラグを原料として製造されるアルカリ成分を多く含
有する高炉セメント等の水硬性セメントが使用できる。
なお、高炉セメントを使用する場合には、冬季の硬化速
度が遅いので高炉水砕スラグの微粉末を高炉セメントに
対して最大３０重量％の範囲で添加するのが好ましく、
これによってコンクリート構造物補修用ポリマーセメン
ト組成物の硬化速度が向上する。In particular, granulated blast furnace slag has a particle size of 0.075 obtained by water cooling and crushing high temperature slag generated in the iron making process.
It is a dry aggregate of ˜2 mm, is inexpensive, and has a high alkalinity of the material itself, so that it has an action of preventing neutralization of the concrete structure. As the cement used in the present invention, in addition to ordinary Portland cement, hydraulic cement such as blast furnace cement containing a large amount of alkaline components produced from slag generated in the iron refining process as a raw material can be used.
When blast furnace cement is used, it is preferable to add fine powder of granulated blast furnace slag in a range of up to 30% by weight with respect to blast furnace cement because the hardening rate in winter is slow.
This improves the curing rate of the polymer cement composition for concrete structure repair.
【０００９】本発明に用いる粉末状水溶性樹脂とは、粉
粒状で水に溶ける性質を有する合成樹脂をいい、これに
よってコンクリート構造物補修用ポリマーセメント組成
物の強度を向上させるもので、例えば水分散型アクリル
系樹脂粉末がある。この水分散型アクリル系樹脂粉末
は、水溶性アクリル系樹脂のエマルジョンを乾燥固化さ
せて粉末状としたもので、水溶性のアクリル系樹脂には
ポリアクリレートが一般的である。このとき、凝固防止
剤として炭酸カルシウムや珪酸等を含有させたものを用
いてもよい。また、接着力を向上させるため、他の粉末
状水溶性樹脂と混ぜて使用するものであってもよい。本
発明に用いる減水剤粉末には、メラミンスルホン酸系縮
合物等の粉末が使用でき、添加される水の量を減らして
圧縮強度、接着強度等の品質特性と作業性とを高めるこ
とがでる。本発明のコンクリート構造物補修用ポリマー
セメント組成物は、必ずしも増粘剤粉末の添加を必要と
するものではなく、該ポリマーセメント組成物を水と混
合してモルタルとしたときに、更に粘度を高めて施工作
業性を向上させたい場合には、澱粉、メチルセルロー
ズ、ハイドロエチルセルローズ、ＰＶＡ等からなる水溶
性の増粘剤粉末を該ポリマーセメント組成物に添加して
も良い。この増粘剤粉末としては、信越化学（株）の商
品名「メローズ９０ＳＨ」等を使用できる。The powdery water-soluble resin used in the present invention is a synthetic resin having a granular and water-soluble property, which improves the strength of the polymer cement composition for repairing concrete structures, and is, for example, water. There are dispersed acrylic resin powders. The water-dispersible acrylic resin powder is a powder obtained by drying and solidifying an emulsion of a water-soluble acrylic resin, and polyacrylate is generally used as the water-soluble acrylic resin. At this time, a substance containing calcium carbonate, silicic acid, or the like as the anticoagulant may be used. Further, in order to improve the adhesive force, it may be used by mixing with other powdery water-soluble resin. As the water reducing agent powder used in the present invention, a powder such as a melamine sulfonic acid type condensate can be used, and the amount of water added can be reduced to enhance the quality characteristics such as compressive strength and adhesive strength and workability. . The polymer cement composition for repairing a concrete structure of the present invention does not necessarily require addition of a thickener powder, and when the polymer cement composition is mixed with water to form a mortar, the viscosity is further increased. If it is desired to improve the workability of construction, a water-soluble thickener powder made of starch, methyl cellulose, hydroethyl cellulose, PVA or the like may be added to the polymer cement composition. As this thickener powder, trade name "Melose 90SH" manufactured by Shin-Etsu Chemical Co., Ltd. can be used.
【００１０】本発明に用いる消泡剤粉末は粉末組成物を
水と混合した際に生じる気泡の発生を抑えて、施工時に
おける施工体の緻密化に効果があり、強度向上が期待で
きる乾燥した粉末である。本発明において、骨材に用い
る高炉水砕スラグのサイズと混合する珪砂は、ＪＩＳ６
号乃至ＪＩＳ７号規格のものを用いる。高炉スラグの破
砕粒は、高炉セメントを用いる場合、骨材として使用さ
れており、その骨材のサイズは通常５ｍｍアンダーのも
のである。しかし、本発明のポリマーセメント組成物に
おいては、０．０７５〜２ｍｍ粒径の高炉水砕スラグを
用いたものが５ｍｍアンダーのそれより耐剥離性に優れ
ている。The defoamer powder used in the present invention suppresses the generation of bubbles when the powder composition is mixed with water, is effective in densifying the construction body during construction, and is expected to improve strength. It is a powder. In the present invention, the silica sand mixed with the size of the granulated blast furnace slag used for the aggregate is JIS 6
No. to JIS No. 7 standard are used. The crushed particles of blast furnace slag are used as aggregate when blast furnace cement is used, and the size of the aggregate is usually 5 mm under. However, in the polymer cement composition of the present invention, the one using the granulated blast furnace slag with a particle diameter of 0.075 to 2 mm is more excellent in peeling resistance than the one using 5 mm under.
【００１１】なお、骨材として用いるスラグは、高炉ス
ラグ又は転炉スラグのどちらでもよいが、転炉スラグを
骨材として用いる場合は、遊離ＣａＯ、遊離ＭｇＯ、遊
離ＦｅＯの含有量が少ないものを用いる。通常の転炉ス
ラグは遊離ＣａＯ、遊離ＭｇＯ、遊離ＦｅＯを多く含有
しているので、通常の転炉スラグ中の遊離ＣａＯ、遊離
ＭｇＯ、遊離ＦｅＯは、コンクリートの損傷部を通常の
転炉スラグからなる骨材を用いたコンクリート補修材で
充填補修された場合、自然界に存在する水、水蒸気、炭
酸ガスと反応して補修材を膨張させる。従って、その充
填補修部は、剥離し、脱落するという問題が生じる。The slag used as the aggregate may be either blast furnace slag or converter slag. However, when the converter slag is used as the aggregate, the content of free CaO, free MgO and free FeO should be small. To use. Since normal converter slag contains a large amount of free CaO, free MgO, and free FeO, free CaO, free MgO, and free FeO in the normal converter slag can cause damage to concrete from the normal converter slag. When it is filled and repaired with a concrete repair material using the aggregate, the repair material expands by reacting with water, steam, and carbon dioxide existing in nature. Therefore, there is a problem that the filling / repairing part peels off and falls off.
【００１２】以上の事情により、転炉スラグは骨材とし
て使用する前に水蒸気に曝して、スラグ中の３ＣａＯ・
ＳｉＯ2 の相変化を生じさせること及び遊離ＣａＯを安
定したものとする（以下「改質」という）により、予め
体積膨張させてから使用する。しかし、遊離ＣａＯ、遊
離ＭｇＯ、遊離ＦｅＯを多く含む転炉スラグは、精錬時
間を通常より長くとることによって、容易にその含有量
を少なくすることができる。精錬時間を通常より延長す
ることは、製鋼工場の採算性から困難であるように思え
るが可能性はある。なお、場合によっては転炉スラグを
取鍋に移した後、適当な改質材（例えば、珪酸塩鉱物
等）を入れて改質した後、破砕して使用してもよい。ま
た、骨材は均一な水混練物を容易に得るために、含水率
を１％未満に処理したものを用いる。Under the above circumstances, the converter slag is exposed to water vapor before being used as an aggregate, and 3CaO.
By causing a phase change of SiO 2 and stabilizing free CaO (hereinafter referred to as “modification”), it is used after being volume-expanded in advance. However, the converter slag containing a large amount of free CaO, free MgO and free FeO can be easily reduced in content by making the refining time longer than usual. Extending the refining time above normal may seem difficult due to the profitability of the steel mill, but it is possible. In some cases, the converter slag may be transferred to a ladle, and then a suitable modifier (for example, a silicate mineral) may be added to modify and then crushed for use. In addition, as the aggregate, in order to easily obtain a uniform water-kneaded product, an aggregate having a water content of less than 1% is used.
【００１３】本発明のコンクリート構造物補修用ポリマ
ーセメント組成物においては、セメント、乾燥した骨
材、粉末状水溶性樹脂、減水剤粉末、必要に応じて使用
する増粘剤粉末、及び消泡剤粉末を含有した無水の混合
粉末に水を混合して使用するものである。前記混合粉末
は無水（含水率が１％未満）であるので、材料の経時変
化が少なく、かつ乾燥状態での各成分の均一混合が容易
にできる。そして更に具体的には、前記無水混合粉末
は、その成分たる前記セメント、骨材、粉末状水溶性樹
脂（例えば、水分散型アクリル系樹脂粉末）、減水剤粉
末、及び消泡剤粉末の各成分量が、セメントを１とした
場合、それぞれ重量比で、１．０〜２．５、０．０３〜
０．２、０．００５〜０．０５、０．０００５〜０．０
０３であるので、水を加えて混合して得られる構造物補
修材の作業性、耐久性をさらに高めることができる。こ
こで、前記コンクリート構造物補修用ポリマーセメント
組成物の中の各成分量の範囲を指定したのは以下の理由
による。In the polymer cement composition for repairing a concrete structure of the present invention, cement, dried aggregate, powdered water-soluble resin, water-reducing agent powder, thickener powder used as necessary, and defoaming agent Water is used by mixing anhydrous mixed powder containing powder. Since the mixed powder is anhydrous (water content is less than 1%), there is little change with time of the material, and it is easy to uniformly mix the respective components in a dry state. And more specifically, the anhydrous mixed powder is each of the components such as the cement, aggregate, powdery water-soluble resin (for example, water-dispersible acrylic resin powder), water reducing agent powder, and defoaming agent powder. When the amount of the components is 1, the weight ratio is 1.0 to 2.5, and 0.03 to
0.2, 0.005-0.05, 0.0005-0.0
Since it is 03, workability and durability of the structure repair material obtained by adding and mixing water can be further enhanced. Here, the range of the amount of each component in the polymer cement composition for concrete structure repair is specified for the following reason.
【００１４】即ち、骨材の重量比が１．０未満である
と、作業性を付加するための添加水量が増して強度が確
保できなくなり、重量比が２．５を超えるとセメント量
が減少するために強度が低下する。粉末状水溶性樹脂の
一例である水分散型アクリル系樹脂粉末とは、水溶性ア
クリル系樹脂のエマルジョンを乾燥固化させて粉末状と
したもので、水溶性のアクリル系樹脂にはヘキスト合成
（株）の商品名「モビニールパウダー」、Ｒ＆Ｈ社の商
品名「プライマール（ＤＰ−２９０３）」、バディッシ
ュ社の商品名「アクロナール（ＤＳ−６０２９）、Ａ−
１０００」等がある。このとき、凝固防止剤として炭酸
カルシウムや珪酸等を含有させたものを用いてもよい。
水分散型アクリル系樹脂粉末の重量比が０．０３未満で
あると、強度、表面性状が悪化する問題があり、重量比
が０．２を超えて添加しても、表面性状及び強度向上の
効果が少なく無駄である。減水剤粉末には、メラミンス
ルホン酸系縮合物等の粉末が使用でき、添加される水の
量を減らして圧縮強度、接着強度等の品質特性と作業性
とを高めることができ、例えば日産化学（株）の商品名
「ＳＭＦ」、昭和電工（株）の商品名「モルマスター」
等を使用できる。減水剤粉末の重量比が０．００５未満
であると、密度及び強度が低下し、重量比が０．０５を
超えて添加しても減水の効果に変化は少ない。なお、増
粘剤粉末を添加した場合、該増粘剤粉末の重量比が０．
０１を超えると粘性が高くなりすぎてモルタルの施工作
業に支障がでる。消泡剤粉末は粉末組成物を水と混合し
た際に生じる気泡の発生を抑えて、施工時における施工
体の緻密化に効果のあるサンノブコ（株）の商品名「Ｓ
Ｎ−デフォーマー（１４ＨＰ）」、旭電化（株）の商品
名「アデカノール」等の粉末である。消泡剤粉末の重量
比が０．０００５未満であると消泡効果が発揮できず密
度及び表面性状等が悪くなり、重量比が０．００３を超
えて添加しても効果は変わらず無駄である。That is, if the weight ratio of the aggregate is less than 1.0, the amount of added water for adding workability increases and the strength cannot be secured, and if the weight ratio exceeds 2.5, the amount of cement decreases. Therefore, the strength is reduced. A water-dispersible acrylic resin powder, which is an example of a powdery water-soluble resin, is a powder obtained by drying and solidifying an emulsion of a water-soluble acrylic resin. ) Brand name “Movinyl Powder”, R & H brand name “Primal (DP-2903)”, Badish brand name “Acronal (DS-6029), A-
1000 "etc. At this time, a substance containing calcium carbonate, silicic acid, or the like as the anticoagulant may be used.
If the weight ratio of the water-dispersed acrylic resin powder is less than 0.03, there is a problem that the strength and surface properties are deteriorated. Even if the weight ratio exceeds 0.2, the surface properties and strength are improved. Ineffective and useless. As the water reducing agent powder, a powder such as a melamine sulfonic acid condensate can be used, and the amount of added water can be reduced to improve the quality characteristics such as compressive strength and adhesive strength and workability. For example, Nissan Chemical Co., Ltd. Product name "SMF" of Showa Denko KK, product name "Molemaster" of Showa Denko KK
Etc. can be used. If the weight ratio of the water-reducing agent powder is less than 0.005, the density and strength are lowered, and even if the water-reducing agent powder is added in an amount exceeding 0.05, the water-reducing effect does not change much. When the thickener powder was added, the weight ratio of the thickener powder was 0.
If it exceeds 01, the viscosity becomes too high, which hinders the mortar construction work. The defoaming agent powder suppresses the generation of bubbles when the powder composition is mixed with water, and is effective in densifying the construction body at the time of construction.
N-deformer (14 HP) ", Asahi Denka Co., Ltd. trade name" Adecanol ", and the like. If the weight ratio of the defoaming agent powder is less than 0.0005, the defoaming effect cannot be exhibited, and the density and surface properties are deteriorated. Even if the weight ratio exceeds 0.003, the effect does not change and it is useless. is there.
【００１５】本発明のコンクリート構造物補修用ポリマ
ーセメント組成物に、長さ３ｍｍ乃至３０ｍｍ（より好
ましくは、１０〜１８ｍｍ程度）の繊維分を、セメント
１に対し、重量比で０．００２〜０．０６の範囲で添加
したものは、コンクリート構造物の補修をすると添加し
ないものに比して剥離しにくいものになる。繊維分とし
ては、カーボン繊維、耐アルカリガラス繊維、アルミナ
繊維、アルミナシリカ繊維等の各種の無機繊維や、ビニ
ロン等の有機繊維が使用できる。これは、繊維がヘアク
ラックの発生を妨げ、発生したヘアクラックについて成
長を妨げることによるものと思われる。なお、繊維分が
０．００２未満であると強度アップ、剥離防止効果が期
待できず、０．０６を超えて添加すると、繊維の均一分
散が困難となって、逆に強度が低下するので好ましくな
い。ここで、繊維分の長さが３ｍｍ未満であると、繊維
分が粒と同じになって組成物を連結する力が働かないの
で強度が不足する。また、繊維分の長さが３０ｍｍを超
えると繊維が絡まり易く、仕上げの場合に伸びないので
強度が落ちひび割れ防止効果が低下し、混練する場合に
は繊維が切れ易く結果として強度が低下するので好まし
くない。なお、実際的には繊維分の長さを１０〜１８ｍ
ｍとすることによって、より強度を有するコンクリート
構造物補修用ポリマーセメント組成物とすることができ
る。前述のコンクリート構造物補修用ポリマーセメント
組成物及びこれに繊維分を添加したものに、少量の着色
剤を添加することによって、これの上に塗付、吹付等を
行う補修材との色違いから、材料の取り間違いや該補修
材の施工漏れを未然に防止することができる。In the polymer cement composition for concrete structure repair of the present invention, a fiber component having a length of 3 mm to 30 mm (more preferably about 10 to 18 mm) is added to cement 1 in a weight ratio of 0.002 to 0. When added in the range of 0.06, when the concrete structure is repaired, it becomes more difficult to peel off as compared with the one not added. As the fiber component, various inorganic fibers such as carbon fiber, alkali resistant glass fiber, alumina fiber and alumina silica fiber, and organic fiber such as vinylon can be used. It is believed that this is because the fibers prevent the generation of hair cracks and the growth of the hair cracks that have occurred. In addition, if the fiber content is less than 0.002, strength cannot be expected to be enhanced and peeling prevention effect cannot be expected, and if it exceeds 0.06, uniform dispersion of the fibers becomes difficult, and conversely the strength decreases, which is preferable. Absent. Here, if the length of the fiber component is less than 3 mm, the fiber component becomes the same as the particles and the force for connecting the composition does not work, resulting in insufficient strength. If the length of the fiber component exceeds 30 mm, the fibers are easily entangled and do not elongate at the time of finishing, so that the strength decreases and the effect of preventing cracking decreases, and when kneading, the fiber easily breaks, resulting in a decrease in strength. Not preferable. In addition, the length of the fiber portion is practically 10 to 18 m.
By setting m, a polymer cement composition for repairing a concrete structure having higher strength can be obtained. From the above-mentioned polymer cement composition for concrete structure repair and the one to which the fiber content has been added, by adding a small amount of a coloring agent, the color difference from the repair material to be applied or sprayed on it Therefore, it is possible to prevent mistakes in taking the material and omission of construction of the repair material.
【００１６】ここで着色剤の添加量は、補修材相互間で
作業者が識別できる程度に色調の差が生じるような量を
添加する。着色剤によっては、着色剤がポリマーセメン
ト組成物と反応して強度が低下することがあるため、着
色剤は色調の差が生じる程度にする。コンクリート構造
物補修用ポリマーセメント組成物においては、前記骨材
には、製鉄過程で発生する高炉水砕スラグ又は転炉スラ
グを必要に応じて改質し、所定粒度に調整したスラグで
あり、転炉スラグの場合には先に説明したように改質し
たものであれば問題がないが、比重がやや大きくなる点
がデメリットである。Here, the colorant is added in such an amount that a difference in color tone is generated between the repairing materials so that the operator can distinguish them. Depending on the colorant, the colorant may react with the polymer cement composition to reduce the strength. Therefore, the colorant is adjusted to a color difference. In the polymer cement composition for concrete structure repair, the aggregate is a blast furnace granulated slag or converter slag generated in the iron making process, which is modified as necessary, and is a slag adjusted to a predetermined particle size. In the case of furnace slag, there is no problem if it is modified as described above, but the disadvantage is that the specific gravity is slightly increased.
【００１７】[0017]
【実施例】続いて、添付した図面を参照しつつ、本発明
を具体化した実施例につき説明し、本発明の理解に供す
る。ここに、図１は本発明の一実施例に係るコンクリー
ト構造物補修用ポリマーセメント組成物の使用形態を示
す断面図であって、（Ａ）はコンクリート構造物の劣化
損傷部を除去して生じた凹部の断面を示し、（Ｂ）はコ
ンクリート構造物が補修材によって補修された後の状態
を示している。Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. FIG. 1 is a cross-sectional view showing a usage pattern of a polymer cement composition for concrete structure repair according to an embodiment of the present invention, in which (A) is generated by removing a deteriorated damaged portion of the concrete structure. The cross section of the concave portion is shown, and (B) shows the state after the concrete structure is repaired by the repair material.
【００１８】先ず、中性化、ひび割れ、剥離等で劣化し
たコンクリート構造物１６の補修対象面をハンマー、カ
ッター、ワイヤーブラシ等ではつり、凹部を作り、鉄筋
１１等を図１（Ａ）に示すように露出させる。そしてさ
らに高圧水等ではつり部１０を洗浄し、はつり後のコン
クリート表面のＰＨが１０以下の場合には、亜硝酸リチ
ウムの水溶液等からなるアルカリ付与剤を刷毛もしくは
スプレー等の手段ではつり部１０のコンクリート表面に
約１ｍｍの厚みで塗り付ける。First, the surface to be repaired of the concrete structure 16 deteriorated due to neutralization, cracking, peeling, etc. is suspended by a hammer, a cutter, a wire brush or the like to form a recess, and the reinforcing bar 11 etc. are shown in FIG. 1 (A). To expose. Further, the hanging portion 10 is washed with high-pressure water or the like, and when the pH of the concrete surface after the peeling is 10 or less, an alkali-imparting agent consisting of an aqueous solution of lithium nitrite or the like is used by a means such as a brush or a spray. Apply it to the concrete surface with a thickness of about 1 mm.
【００１９】防錆剤１２は、表１（Ａ）に示す粉末状水
溶性樹脂の一例である水分散型アクリル系樹脂粉末７０
重量部、高炉セメント１０００重量部、珪砂からなる骨
材１０００重量部、減水剤粉末１０重量部、消泡剤粉末
１重量部、増粘剤粉末４重量部からなる粉末組成物を乾
燥状態において混合したものに着色剤の一例であるベン
ガラを１０重量部を加えて均一な混合物とし、さらにそ
の均一な混合物に水を５００重量部を添加し、モルタル
ミキサーにより均一混練したものであり、通常１〜２ｍ
ｍ程度の厚みで被覆される。なお、表１は、本発明のポ
リマーセメント組成物を用いてコンクリート構造物の劣
化損傷部を補修した場合における成分構成と施工結果の
関係を示したものである。The rust preventive agent 12 is a water-dispersible acrylic resin powder 70 which is an example of a powdery water-soluble resin shown in Table 1 (A).
In a dry state, a powder composition comprising 1 part by weight, 1000 parts by weight of blast furnace cement, 1000 parts by weight of aggregate made of silica sand, 10 parts by weight of water reducing agent powder, 1 part by weight of defoaming agent powder, and 4 parts by weight of thickener powder is mixed. 10 parts by weight of red iron oxide, which is an example of a colorant, is added to the prepared mixture to form a uniform mixture, and 500 parts by weight of water is further added to the uniform mixture, which is uniformly kneaded with a mortar mixer. 2m
It is coated with a thickness of about m. In addition, Table 1 shows the relationship between the component composition and the construction result when the deteriorated and damaged part of the concrete structure is repaired using the polymer cement composition of the present invention.
【００２０】[0020]
【表１】 [Table 1]
【００２１】前記防錆材１２はアルカリ性であるので長
時間にわたり防錆効果が維持される。また、このとき防
錆剤１２は添加したベンガラにより赤色に着色されてい
るため、容易に塗り付けの不良箇所を識別でき、作業効
率を向上させることができる。また、表１には施工が同
一の条件で、別に品質測定用の試験片を作成して、その
試験片の比重、曲げ強度及び圧縮強度を測定した値、及
び作業性の評価結果を施工結果として併記している。そ
して、次に表１（Ｂ）に示す如く、本発明の一実施例に
係るコンクリート構造物補修用ポリマーセメント組成物
を用いた躯体補修材１７を前記凹部に充填する。この躯
体補修材１７はコンクリート構造物１６の強度を健全に
維持するために、少なくとも２００ｋｇｆ／ｃｍ2 以上
の圧縮強度を必要とする補修材料である。Since the rust preventive material 12 is alkaline, the rust preventive effect is maintained for a long time. Further, at this time, since the rust preventive agent 12 is colored in red by the red iron oxide added, it is possible to easily identify the defective portion of application and improve the working efficiency. In addition, in Table 1, under the same conditions of construction, a test piece for quality measurement was separately prepared, and the specific gravity, bending strength and compression strength of the test piece were measured, and the workability evaluation result was used as the construction result. Are also listed as. Then, as shown in Table 1 (B), a skeleton repair material 17 using the polymer cement composition for concrete structure repair according to one embodiment of the present invention is filled in the recess. The skeleton repair material 17 is a repair material that requires a compressive strength of at least 200 kgf / cm 2 or more in order to maintain the strength of the concrete structure 16 soundly.
【００２２】そしてこの赤色に着色したポリマーセメン
ト組成物で構成された躯体補修材１７を鏝等によって、
コンクリート構造物１６の劣化部分をはつって生じた凹
部に充填して施工面を均し、ほぼ平らな補修面１０ａと
なるように仕上げた。図１（Ｂ）に示すモルタル欠損補
修材１４は、表１（Ｃ）に示すように繊維分の一例であ
るカーボン繊維を含有する本発明のポリマーセメントの
組成物に、水６２２重量部を添加した後、前記と同様に
モルタルミキサーにより混合したものであり、躯体補修
材１７の表面に塗布される。本発明のモルタル欠損補修
材１４は垂直な壁面に塗布したときに流れ落ちることな
く適度の粘性で、施工した補修面１０ｂを平滑に維持す
ることができる。このとき、モルタル欠損補修材１４が
特に軽量化、並びに良好な作業性を必要とする場合に
は、骨材配合中の中空粒子（人工軽量骨材）の量を増や
して、珪砂の量を減じた表１（Ｅ）に示す粉粒組成物３
２８２重量部に水７０６重量部を添加混合したものを用
いることができる。Then, using a trowel or the like, the body repair material 17 composed of the polymer cement composition colored in red is
The deteriorated part of the concrete structure 16 was filled in the recessed part and the construction surface was leveled to finish the repair surface 10a into a substantially flat surface. The mortar defect repair material 14 shown in FIG. 1 (B) has 622 parts by weight of water added to the composition of the polymer cement of the present invention containing carbon fibers which is an example of the fiber content as shown in Table 1 (C). After that, the mixture is mixed by a mortar mixer in the same manner as described above, and is applied to the surface of the body repair material 17. The mortar defect repair material 14 of the present invention does not run down when applied to a vertical wall surface, has an appropriate viscosity, and can keep the repaired surface 10b that has been applied smooth. At this time, when the mortar defect repair material 14 requires particularly light weight and good workability, the amount of hollow particles (artificial lightweight aggregate) in the aggregate is increased to reduce the amount of silica sand. Table 3 (E) powder and grain composition 3
A mixture of 282 parts by weight and 706 parts by weight of water may be used.
【００２３】ここで、中空粒子とは、アルミノシリケー
ト質又はシラスバルーンからなる骨材であり、施工体の
軽量化と作業性を調整することのできる原料である。こ
の場合、即ち表１（Ｅ）は、表１の（Ａ）〜（Ｄ）に較
べてはつり部１０及び補修面１０ａへの付着性、ダレ防
止等の作業性をさらに良好（◎）とすることができる。
そして、モルタル欠損補修材１４は鏝塗りもしくは吹付
等の手段により、３０ｍｍ前後の厚さで積層される。図
１（Ｂ）に示す仕上げ補修材１５は、美観が重視され、
かつ非透水性とすることが必要であるために、長さ１０
ｍｍ乃至１８ｍｍのカーボン繊維を含有させ、かつ珪砂
のみを骨材としたものであり、モルタル欠損補修材１４
が充填されている補修面１０ｂの表面に１〜２ｍｍの厚
さで積層される。Here, the hollow particles are aggregates made of aluminosilicate or shirasu balloon, and are raw materials which can reduce the weight of the construction body and adjust workability. In this case, that is, in Table 1 (E), compared to (A) to (D) in Table 1, the workability such as adhesion to the hanging portion 10 and the repair surface 10a and sagging prevention is further improved (⊚). be able to.
Then, the mortar defect repair material 14 is laminated with a thickness of about 30 mm by means such as trowel coating or spraying. The finish repair material 15 shown in FIG. 1 (B) emphasizes aesthetics,
In addition, since it is necessary to make it impermeable, a length of 10
a mortar defect repairing material containing carbon fiber of 18 mm to 18 mm and using only silica sand as an aggregate.
Is laminated on the surface of the repair surface 10b filled with 1 to 2 mm in thickness.
【００２４】本発明の仕上げ補修材１５は、表１（Ｄ）
に示す本発明のポリマーセメント組成物に５００重量部
の水を添加混合したものである。コンクリート構造物１
６の劣化損傷部を除去して生じた凹部は、本発明のポリ
マーセメント組成物によって前述の如く補修され、その
補修材は必要な補修材の色分けがなされているため、材
料の取り違え等の作業ミスがなく、かつ補修量及び補修
箇所を的確に判断できるために効率的な補修を行うこと
ができた。また、特に躯体補修材１７、モルタル欠損補
修材１４に使用する混合粉末中の高炉水砕スラグの量は
加えるセメント量１に対して重量比で０．５〜１．５と
することが経済性、コンクリート構造物へのアルカリ性
付与等の観点から望ましい。The finish repair material 15 of the present invention is shown in Table 1 (D).
In the polymer cement composition of the present invention shown in (1), 500 parts by weight of water is added and mixed. Concrete structure 1
The concave portion formed by removing the deteriorated and damaged portion of No. 6 is repaired by the polymer cement composition of the present invention as described above, and the repair material is color-coded for the necessary repair material. Since there were no mistakes and the repair amount and repair location could be accurately judged, efficient repairs could be performed. Further, it is economical to set the amount of granulated blast furnace slag in the mixed powder used for the frame repair material 17 and the mortar defect repair material 14 to be 0.5 to 1.5 by weight ratio with respect to the cement amount 1 to be added. It is desirable from the viewpoint of imparting alkalinity to concrete structures.
【００２５】以上、本発明の実施例を説明したが、本発
明はこれらの実施例に限定されるものではなく、要旨を
逸脱しない条件の変更等は全て本発明の適用範囲であ
る。例えば本実施例ではモルタル欠損補修材及び仕上げ
補修材に配合する繊維分として、カーボン繊維を用いた
が、耐アルカリガラス繊維、その他の無機あるいは有機
の繊維等が適用でき、着色剤としてもベンガラ以外の各
種の顔料等が使用できる。但しカーボン繊維は防錆材中
に含有させると、鉄筋との接触により錆を誘発するので
好ましくない。また、実施例において施工時の水の添加
量を限定して説明したが、用途又は季節に応じて変更す
ることも当然可能であり、更には本補修材を吹付け等の
手段によって施工することも可能である。Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and changes in conditions and the like without departing from the gist are all within the scope of the present invention. For example, in this embodiment, carbon fiber was used as the fiber component to be mixed in the mortar defect repair material and the finish repair material, but alkali resistant glass fiber, other inorganic or organic fiber, etc. can be applied, and as a colorant other than red iron oxide. Various kinds of pigments can be used. However, if carbon fiber is contained in the rust preventive material, rust is induced by contact with the reinforcing bar, which is not preferable. In addition, although the amount of water added during construction has been limited in the examples, it is of course possible to change it according to the application or the season. Furthermore, the repair material should be constructed by means such as spraying. Is also possible.
【００２６】[0026]
【発明の効果】本発明に係る請求項１〜６記載のコンク
リート構造物補修用ポリマーセメント組成物において
は、乾燥した骨材を用いるため保存中の材料の経時変化
が少なく、塊状物の発生もないので、現場で水を添加し
て行った混練物は容易に均一になる。また、予め秤量し
たものを同一梱包として保存することができるために、
均一な混練物を得ることができ、これを用いたコンクリ
ート構造物の補修部分は、中性化しにくく、更には剥離
しにくいものとなった。また、繊維分を含むようにした
場合には、水を加えてモルタルとしたときにモルタル中
に分散した繊維の絡み合いによって高強度化が達成で
き、劣化したコンクリート構造物の剥離を抑制すること
ができる。更に、原料及びこれに水を加えたモルタルの
識別のための少量の着色剤を含むようにした場合には、
これによってコンクリート構造物の補修された部分が色
付くことになり、その補修部の上に塗布、吹付等する機
能の異なる補修材の施工厚みの管理が容易になって補修
品質が向上したと同時に、補修材の取り違えから生じる
補修ミスが無くなった。EFFECTS OF THE INVENTION In the polymer cement composition for repairing a concrete structure according to claims 1 to 6 of the present invention, since dry aggregate is used, there is little change with time of the material during storage and formation of lumps. Since it does not exist, the kneaded product prepared by adding water on the spot easily becomes uniform. Also, since weighed items can be stored in the same package,
It was possible to obtain a uniform kneaded product, and the repaired part of the concrete structure using this was difficult to neutralize, and further, peeling was difficult. Further, when the fiber content is included, it is possible to achieve high strength by entanglement of the fibers dispersed in the mortar when water is added to form the mortar, and to prevent peeling of a deteriorated concrete structure. it can. Furthermore, when a small amount of a coloring agent for identifying the raw material and the mortar containing water added thereto is included,
As a result, the repaired part of the concrete structure will become colored, and it becomes easier to control the construction thickness of the repair material with different functions such as coating and spraying on the repaired part, improving the repair quality at the same time, There are no repair mistakes caused by mistaken repair materials.
【図１】（Ａ）、（Ｂ）は本発明の一実施例に係るコン
クリート構造物補修用ポリマーセメント組成物の使用形
態を示す断面説明図である。1A and 1B are cross-sectional explanatory views showing a usage pattern of a polymer cement composition for concrete structure repair according to an embodiment of the present invention.
１０ はつり部 １０ａ 補修面 １０ｂ 補修面 １１ 鉄筋 １２ 防錆材 １４ モルタル欠損補修材 １５ 仕上げ補修材 １６ コンクリート構造物 １７ 躯体補修材 10 Reinforcing part 10a Repair surface 10b Repair surface 11 Reinforcing bar 12 Anticorrosive material 14 Mortar defect repair material 15 Finish repair material 16 Concrete structure 17 Body repair material
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｅ０４Ｇ 23/02 Ｅ０４Ｇ 23/02 Ｂ // Ｃ０４Ｂ 111:72 (71)出願人 592179849 大日本色材工業株式会社 東京都千代田区神田神保町３丁目７番地１ 号 ニュー九段ビル (71)出願人 000108904 ダイキ工業株式会社 福岡県北九州市小倉北区赤坂５丁目６番64 号 (71)出願人 595053559 五光産業株式会社 福岡県北九州市小倉南区城野４丁目１−26 (72)発明者 北村 彰啓 福岡県北九州市戸畑区飛幡町１番１号 新 日本製鐵株式会社八幡製鐵所内 (72)発明者 山本 孝雄 福岡県北九州市八幡東区川淵町９の27 太 平工業株式会社八幡支店内 (72)発明者 糸長 一彦 福岡県北九州市小倉北区吉野町10番31号 財団法人北九州市建築・設備保全公社内 (72)発明者 堀 宏二 福岡県北九州市小倉北区吉野町10番31号 財団法人北九州市建築・設備保全公社内 (72)発明者 湯浅 賢治 福岡県北九州市小倉北区吉野町10番31号 財団法人北九州市建築・設備保全公社内 (72)発明者 藤村 良雄 福岡県福岡市博多区中洲５−６−20 三菱 化学株式会社九州支店内 (72)発明者 大滝 岩夫 大阪府大阪市中央区伏見町４丁目１−１ 大日本色材工業株式会社大阪営業所内 (72)発明者 池田 幹友 福岡県北九州市小倉北区赤坂５丁目６番64 号 ダイキ工業株式会社内 (72)発明者 中島 洋一 福岡県北九州市小倉南区城野４丁目１−26 五光産業株式会社内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location E04G 23/02 E04G 23/02 B // C04B 111: 72 (71) Applicant 592179849 Dainippon Color Materials Industry Co., Ltd. New Kudan Building, 3-7-1, Kanda-Jinbocho, Chiyoda-ku, Tokyo (71) Applicant 000108904 Daiki Industry Co., Ltd. 5-6-64 Akasaka, Kokurakita-ku, Kitakyushu, Fukuoka (71) Applicant 595053559 Gokou Sangyo Co., Ltd. 4-1-2, Shirono, Kokuraminami-ku, Kitakyushu, Fukuoka Prefecture (72) Inventor Akihiro Kitamura 1-1, Hibatacho, Tobata-ku, Kitakyushu, Kitakyushu, Fukuoka (72) Inventor, Yawata Works (72) Takao Yamamoto, 27, Kawabuchi-cho, Yawatahigashi-ku, Kitakyushu, Fukuoka Prefecture Taihei Kogyo Co., Ltd., Hachiman Branch (72) Inventor, Kazuhiko Itonaga, Yoshikazu, Kokurakita-ku, Kitakyushu, Fukuoka Town 10-31 Kitakyushu City Building and Equipment Conservation Public Corporation (72) Inventor Koji Hori 10-31 Yoshinocho, Kokurakita-ku, Kitakyushu City Fukuoka Prefecture Kitakyushu City Building and Equipment Conservation Public Corporation (72) Inventor Kenji Yuasa 10-31 Yoshino-cho, Kokurakita-ku, Kitakyushu, Fukuoka Prefecture Incorporated foundation, Kitakyushu City Building and Equipment Maintenance (72) Inventor Yoshio Fujimura 5-6-20 Nakasu, Hakata-ku, Fukuoka-shi, Fukuoka Mitsubishi Chemical Corporation Kyushu Branch (72) Inventor Iwao Otaki 4-1-1, Fushimi-cho, Chuo-ku, Osaka-shi, Osaka Inside Dainippon Color Materials Co., Ltd. Osaka Office (72) Inventor Mikitomo Ikeda 5-chome, Akasaka, Kitakyushu, Kitakyushu, Fukuoka No. 64 Inside Daiki Industry Co., Ltd. (72) Inventor Yoichi Nakajima 4-1-2, Shirono, Kokuraminami-ku, Kitakyushu City, Fukuoka Prefecture Within Goko Sangyo Co., Ltd.
Claims (6)
樹脂、減水剤粉末、及び消泡剤粉末を含有した無水の混
合粉末と水を混合することを特徴とするコンクリート構
造物補修用ポリマーセメント組成物。1. A polymer for repairing concrete structures, characterized in that water is mixed with an anhydrous mixed powder containing cement, dried aggregate, powdered water-soluble resin, water reducing agent powder, and defoaming agent powder. Cement composition.
脂、減水剤粉末、及び消泡剤粉末は、セメントを１とし
た場合、それぞれの重量比は、１．０〜２．５、０．０
３〜０．２、０．００５〜０．０５、０．０００５〜
０．００３である請求項１記載のコンクリート構造物補
修用ポリマーセメント組成物。2. The cement, the aggregate, the powdery water-soluble resin, the water-reducing agent powder, and the defoaming agent powder have a weight ratio of 1.0 to 2.5, 0 when cement is 1. .0
3-0.2, 0.005-0.05, 0.0005
The polymer cement composition for repairing a concrete structure according to claim 1, which is 0.003.
を、セメント１に対し、重量比で０．００２〜０．０６
の範囲で含む請求項１又は２記載のコンクリート構造物
補修用ポリマーセメント組成物。3. A fiber component having a length of 3 mm to 30 mm with respect to cement 1 in a weight ratio of 0.002 to 0.06.
The polymer cement composition for repairing a concrete structure according to claim 1 or 2, which is included in the range.
か１項に記載のコンクリート構造物補修用ポリマーセメ
ント組成物。4. The polymer cement composition for repairing a concrete structure according to claim 1, wherein a colorant is added.
合物で構成された請求項１〜４のいずれか１項に記載の
コンクリート構造物補修用ポリマーセメント組成物。5. The polymer cement composition for concrete structure repair according to claim 1, wherein the aggregate is composed of a mixture of granulated blast furnace slag and silica sand.
項１〜４のいずれか１項に記載のコンクリート構造物補
修用ポリマーセメント組成物。6. The polymer cement composition for repairing a concrete structure according to claim 1, wherein the aggregate is composed of a converter slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08745995A JP3394966B2 (en) | 1995-03-20 | 1995-03-20 | Polymer cement composition for concrete structure repair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08745995A JP3394966B2 (en) | 1995-03-20 | 1995-03-20 | Polymer cement composition for concrete structure repair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08259294A true JPH08259294A (en) | 1996-10-08 |
| JP3394966B2 JP3394966B2 (en) | 2003-04-07 |
Family
ID=13915468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08745995A Expired - Fee Related JP3394966B2 (en) | 1995-03-20 | 1995-03-20 | Polymer cement composition for concrete structure repair |
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| Country | Link |
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| JP (1) | JP3394966B2 (en) |
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|---|---|---|---|---|
| JP2000302511A (en) * | 1999-04-13 | 2000-10-31 | Nichiei-Yoshida Co Ltd | Repairing material for concrete |
| JP2001295476A (en) * | 2000-04-12 | 2001-10-26 | Yoshiyuki Ogushi | Reinforcing method for concrete skeleton |
| JP2001322858A (en) * | 2000-05-09 | 2001-11-20 | Sumitomo Osaka Cement Co Ltd | Concrete section repair material |
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