JP2016196743A - Simple repair material and simple repair method - Google Patents
Simple repair material and simple repair method Download PDFInfo
- Publication number
- JP2016196743A JP2016196743A JP2015076098A JP2015076098A JP2016196743A JP 2016196743 A JP2016196743 A JP 2016196743A JP 2015076098 A JP2015076098 A JP 2015076098A JP 2015076098 A JP2015076098 A JP 2015076098A JP 2016196743 A JP2016196743 A JP 2016196743A
- Authority
- JP
- Japan
- Prior art keywords
- air
- simple repair
- water
- composition
- repair material
- 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
Landscapes
- Working Measures On Existing Buildindgs (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
本発明は、劣化したコンクリートを簡易に補修するための材料と、該材料を用いたコンクリートの簡易補修方法に関する。 The present invention relates to a material for easily repairing deteriorated concrete and a simple repair method for concrete using the material.
コンクリート構造物の点検・調査でコンクリートの劣化部分を発見すると、通常、劣化位置と劣化の状態を記録し、優先順位を定めて、順次、コンクリートの補修が行われる。
したがって、優先度の低い劣化部分は、補修の順番がくるまで放置されるため、その間に劣化が進行するおそれがある。ちなみに、点検してから補修するまでの期間は、補修の優先度が低い場合や、補修する場所が立ち入り難い場合には、１年以上になることもある。
そこで、点検・調査と同時に応急的に補修を行うことができれば、本格的な補修までの間、劣化の進行が抑制でき、劣化の進行による補修費用の増加を抑えることができる。
When a deteriorated part of concrete is discovered by inspection and investigation of a concrete structure, the deterioration position and the state of deterioration are usually recorded, priorities are set, and concrete is repaired sequentially.
Therefore, the deteriorated portion having a low priority is left until the repair order is reached, and thus the deterioration may progress during that time. By the way, the period from inspection to repair may be over one year if the priority of repair is low or the place to repair is difficult to enter.
Therefore, if repairs can be performed immediately at the same time as inspections and surveys, the progress of deterioration can be suppressed until full-scale repairs, and the increase in repair costs due to the progress of deterioration can be suppressed.
従来、種々の有機系および無機系の補修材が提案されている。
例えば、有機系補修材として、エポキシ樹脂舗装用塗料にビニール系粉体混和物を所定の割合で混合した補修材（特許文献１）や、常温硬化型のアクリル系の補修材（特許文献２）等が提案されている。また、無機系補修材として、水砕スラグ粒子を主体とする骨材と、セメントと、コンクリート混和材との混合粉からなる補修材（特許文献３）や、セメント、骨材、水、および減水剤を含む補修材（特許文献４）等が提案されている。
しかし、有機系補修材はパック等の使い易い形態の製品があるものの、屋外での耐久性に劣り、また、水に濡れているコンクリートの下地に対しては付着が弱くなり易い。
また、セメントを含む無機系補修材は耐久性に優れ、湿った状態のコンクリートの下地に対しても強く付着するが、該補修材と水を混合するための混合装置や混合工程が必要になり、その分、手間がかかり煩雑になる等の課題がある。
Conventionally, various organic and inorganic repair materials have been proposed.
For example, as an organic repair material, a repair material (Patent Document 1) in which a vinyl-based powder admixture is mixed in a predetermined ratio with an epoxy resin pavement paint, or a room temperature curing acrylic repair material (Patent Document 2) Etc. have been proposed. In addition, as an inorganic repair material, a repair material (Patent Document 3) made of a mixed powder of aggregate mainly composed of granulated slag particles, cement and a concrete admixture, cement, aggregate, water, and water reduction A repair material containing an agent (Patent Document 4) has been proposed.
However, although there are products in an easy-to-use form such as packs, organic repair materials are inferior in durability outdoors, and adhesion to a concrete substrate wet with water tends to be weak.
In addition, the inorganic repair material containing cement is excellent in durability and adheres strongly to the wet concrete ground, but requires a mixing device and a mixing process to mix the repair material with water. Therefore, there is a problem that it is troublesome and complicated.
したがって、本発明は、従来の補修材よりも取り扱いが簡易な補修材等を提供することを目的とする。 Accordingly, an object of the present invention is to provide a repair material and the like that are easier to handle than conventional repair materials.
本発明者は、前記目的を達成するために鋭意検討した結果、気硬性物質（下記の水酸化カルシウムおよび／または水酸化マグネシウム）と水を含む組成物を密封した状態で保管しておき、補修時に開封して該組成物を用いれば、長期間保管ができ、また補修が簡易になることを見い出し、本発明を完成させた。 As a result of intensive studies to achieve the above object, the present inventor has stored a composition containing an air-hardening substance (the following calcium hydroxide and / or magnesium hydroxide) and water in a sealed state for repair. It has been found that if the composition is used after being opened from time to time, it can be stored for a long period of time and the repair can be simplified, and the present invention has been completed.
すなわち、本発明は、以下の構成を有する簡易補修材および簡易補修方法である。
［１］シート状に成形された気硬性含水組成物の両面（表面および裏面）、または全面（両面および側面）を、炭酸ガス不透過性の被覆材により被覆してなることを特徴とする、簡易補修材。
［２］前記気硬性含水組成物が、水酸化カルシウムおよび／または水酸化マグネシウムと、水とを含む、前記［１］に記載の簡易補修材。
［３］前記気硬性含水組成物が、さらに骨材、繊維、防錆剤、増粘剤およびセメント混和用ポリマーからなる群より選ばれる１種以上を含む、前記［１］または［２］に記載の簡易補修材。
［４］前記［１］〜［３］のいずれかに記載の簡易補修材を用いて、コンクリートの劣化部分を補修する方法であって、下記（Ａ）〜（Ｃ）工程を含むことを特徴とする簡易補修方法。
（Ａ）前記簡易補修材の表面または裏面の被覆材を剥離して、気硬性含水組成物を露出させる、被覆材の剥離工程
（Ｂ）前記気硬性含水組成物の露出面をコンクリートの劣化部分に貼付する、気硬性含水組成物の貼付工程。
（Ｃ）残りの全ての面の被覆材を剥離して、気硬性含水組成物を空気中の炭酸ガスに曝すことにより炭酸化による硬化（気硬）を進行させる、気硬性含水組成物の炭酸化工程。
That is, this invention is the simple repair material and the simple repair method which have the following structures.
[1] It is characterized in that both surfaces (front and back surfaces) or entire surfaces (both surfaces and side surfaces) of a pneumatic hydrated composition formed into a sheet are covered with a carbon dioxide-impermeable coating material. Simple repair material.
[2] The simple repair material according to [1], wherein the air-borne hydrous composition includes calcium hydroxide and / or magnesium hydroxide and water.
[3] In the above [1] or [2], the air-borne hydrous composition further includes one or more selected from the group consisting of aggregate, fiber, rust inhibitor, thickener, and cement admixture polymer. Simple repair material described.
[4] A method for repairing a deteriorated portion of concrete using the simple repair material according to any one of [1] to [3], including the following steps (A) to (C): A simple repair method.
(A) The coating material peeling process which peels off the coating material of the surface or back surface of the said simple repair material, and exposes an air-hardening water-containing composition (B) The exposed surface of the said air-hardening water-containing composition is a deterioration part of concrete A sticking process of the air-hardening water-containing composition to be attached to the skin.
(C) Carbonation of a pneumatic hydrated composition in which the coating material on all the remaining surfaces is peeled off and curing (carbonized) is promoted by carbonation by exposing the pneumatic hydrated composition to carbon dioxide in the air. Process.
本発明の簡易補修材および簡易補修方法は以下の効果を有する。
（i）簡易補修材中の気硬性含水組成物は水を含むため、補修現場における材料の練混ぜが不要であり、その分、作業時間を短縮できる。
（ii）被覆材を剥がして簡易補修材中の気硬性含水組成物をコンクリートの劣化部分に貼付するだけで、コンクリートの補修が簡易にできる。
（iii）気硬性含水組成物は無機材料であるため、耐久性が高い。
（vi）気硬性含水組成物は空気中の炭酸ガスと反応して、長期にわたり強度が増進する。
（v）気硬性含水組成物はアルカリ性であるため、コンクリート中の鉄筋の防食効果が高い。
The simple repair material and the simple repair method of the present invention have the following effects.
(I) Since the air-borne hydrous composition in the simple repair material contains water, it is not necessary to mix the materials at the repair site, and the work time can be shortened accordingly.
(Ii) The concrete can be easily repaired by simply peeling off the covering material and applying the air-borne hydrous composition in the simple repair material to the deteriorated portion of the concrete.
(Iii) Since the air-hard water-containing composition is an inorganic material, it has high durability.
(Vi) The air-borne water-containing composition reacts with carbon dioxide in the air, and the strength is increased over a long period of time.
(V) Since the air-borne water-containing composition is alkaline, it has a high anticorrosion effect for reinforcing steel in concrete.
本発明の簡易補修材は、前記のとおり、シート状に成形された気硬性含水組成物の両面（表面および裏面）、または全面（両面および側面）を、炭酸ガス不透過性の被覆材により被覆してなるものである。また、本発明の簡易補修方法は、前記簡易補修材を用いて、コンクリートの劣化部分を補修する方法であって、（Ａ）被覆材の剥離工程、（Ｂ）気硬性含水組成物の貼付工程、および（Ｃ）気硬性含水組成物の炭酸化工程を含むものである。
以下に、本発明について、簡易補修材と簡易補修方法に分けて説明する。
As described above, the simple repair material of the present invention covers both surfaces (front surface and back surface) or the entire surface (both surfaces and side surfaces) of the air-borne hydrous composition formed into a sheet with a carbon dioxide-impermeable coating material. It is made. Further, the simple repair method of the present invention is a method of repairing a deteriorated portion of concrete using the simple repair material, wherein (A) a coating material peeling step, and (B) a pneumatic hydrated composition sticking step. And (C) a carbonation step of a pneumatic hard water-containing composition.
Hereinafter, the present invention will be described by dividing it into a simple repair material and a simple repair method.
１．簡易補修材
（１）炭酸ガス不透過性の被覆材
該被覆材は、気硬性含水組成物を空気中の炭酸ガスから遮断するために用いる。したがって、該被覆材は炭酸ガスが透過できない材料であれば、特に制限されず、例えば、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリエチレン、またはポリプロピレン等のフィルム、シート、または容器が挙げられる。
なお、前記「両面を被覆」とは、気硬性含水組成物が薄くて側面がない場合には、気硬性含水組成物の両面を被覆し、前記「全面を被覆」とは、気硬性含水組成物が厚くて側面がある場合には、気硬性含水組成物の両面と側面を被覆する意味である。
1. Simple Repair Material (1) Carbon dioxide-impermeable coating material The coating material is used to block the air-borne composition from carbon dioxide in the air. Accordingly, the coating material is not particularly limited as long as it is a material that cannot transmit carbon dioxide gas, and examples thereof include films, sheets, and containers such as polyvinyl chloride, polyvinylidene chloride, polyethylene, and polypropylene.
The “coating on both sides” means that when the air-borne hydrated composition is thin and has no side surfaces, both surfaces of the air-borne hydrated composition are coated, and the “covering the entire surface” means the air-borne hydrated composition. When a thing is thick and has a side surface, it is the meaning which coat | covers both surfaces and a side surface of a pneumatic hard water-containing composition.
（２）気硬性含水組成物
該気硬性含水組成物は、水酸化カルシウムおよび／または水酸化マグネシウムと、水とを含む組成物であって、空気中の炭酸ガスと反応して硬化する性質を有する。コンクリート中の鉄筋を保護する観点から、これらの中でも、好ましくは、高アルカリ性を示す水酸化カルシウムである。
前記気硬性含水組成物は、前記気硬性物質１００質量部に対し水を３０〜１００質量部含む。
また、前記気硬性含水組成物は、さらに骨材、繊維、防錆剤、増粘剤およびセメント混和用ポリマーからなる群より選ばれる１種以上を含むことができる。
前記骨材は、川砂、陸砂、海砂、珪砂、砕砂、軽量骨材（パーライト、シラスバルーン、合成樹脂発泡体など）、人工細骨材、再生細骨材、および陶磁器の粉砕物からなる群より選ばれる１種以上が挙げられる。これらの中でも反応性とコストが低く、粒度や骨材の乾燥状態など品質が安定している点で、珪砂が好ましい。骨材の配合量としては、前記気硬性物質１００質量部に対し１０〜４００質量部が好ましい。
前記繊維は、ガラス繊維、金属繊維、および有機繊維からなる群より選ばれる１種以上が挙げられ、繊維を含む気硬性含水組成物は、ダレやひび割れを低減できる。繊維の配合量としては、前記気硬性物質１００質量部に対し０．０１〜５．０質量部が好ましい。
また、前記防錆剤は、亜硝酸カルシウム等の亜硝酸塩、２級アミン等の有機アミン、ケイ酸塩等の沈殿形成物質等が挙げられ、これらの防錆剤は、鉄筋に不働態被膜を形成するため、鉄筋の腐食を抑制する効果が高い。防錆剤の配合量としては、前記気硬性物質１００質量部に対し０．０１〜５．０質量部が好ましい。
また、前記増粘剤は、セルロース系（メチルセルロース）、アクリル系（ポリアクリルアミド、アクリルポリマー）、グリコール系、およびデンプン系（アルファー化デンプン）等からなる群より選ばれる１種以上が挙げられ、これらの増粘剤は、増粘効果により材料分離やダレを抑制できる。増粘剤の配合量としては、前記気硬性物質１００質量部に対し０．０１〜５．０質量部が好ましい。
前記セメント混和用ポリマーは、水性ポリマーディスパージョン（ゴムラテックス、樹脂エマルジョン等）、再乳化形粉末樹脂（エチレン酢酸ビニル等）、水溶性ポリマー（ポリビニルアルコール等）、液状ポリマー等からなる群より選ばれる１種以上が挙げられ、これらのセメント混和用ポリマーは、セメント水和物間をポリマー粒子により充填し、接着面を増やすことにより付着を高める効果がある。セメント混和用ポリマーの配合量としては、前記気硬性物質１００質量部に対し５〜３５質量部が好ましい。
さらに、本発明における気硬性物質には、前記成分の他にも、必要に応じて、本発明の特長が損なわない程度において、さらに各種混和剤（材）を添加することを妨げない。例えば、高性能減水剤、高性能ＡＥ減水剤、ＡＥ減水剤および流動化剤等の分散剤、膨張材、収縮低減剤、急硬剤（材）、防水材、凍結防止剤、保水剤、顔料、白華防止剤、発泡剤、消泡剤、撥水剤、シリカフューム等のポゾラン微粉末、高炉スラグ微粉末、石灰石微粉末等の石粉等が挙げられる。
また、気硬性含水組成物はシート状であり、好ましくは、その厚さが３〜１５ｍｍであり、より好ましくは、５〜１０ｍｍである。気硬性含水組成物の形状や大きさは、作業可能な範囲であれば特に限定されないが、例えば、縦が５０〜２０００ｍｍ、および横が５０〜２０００ｍｍの方形、または直径が５０〜２０００ｍｍの円形である。より好ましくは縦が５０〜３００ｍｍ、および横が５０〜３００ｍｍの方形、または直径が５０〜３００ｍｍの円形である。この大きさであれば、持ち運びに便利であり、作業性にも優れる。
(2) Pneumatic water-containing composition The air-tight water-containing composition is a composition containing calcium hydroxide and / or magnesium hydroxide and water, and has a property of curing by reacting with carbon dioxide in the air. Have. Among these, calcium hydroxide showing high alkalinity is preferable from the viewpoint of protecting the reinforcing steel in the concrete.
The pneumatic hard water-containing composition contains 30 to 100 parts by mass of water with respect to 100 parts by mass of the pneumatic substance.
In addition, the air-borne hydrated composition may further include one or more selected from the group consisting of aggregates, fibers, rust inhibitors, thickeners, and cement-mixing polymers.
The aggregate is composed of river sand, land sand, sea sand, quartz sand, crushed sand, lightweight aggregate (perlite, shirasu balloon, synthetic resin foam, etc.), artificial fine aggregate, recycled fine aggregate, and ceramic pulverized material. 1 type or more chosen from a group is mentioned. Among these, silica sand is preferred because of its low reactivity and cost, and stable quality such as particle size and dryness of aggregates. As a compounding quantity of an aggregate, 10-400 mass parts is preferable with respect to 100 mass parts of said air-hardening substances.
As for the said fiber, 1 or more types chosen from the group which consists of glass fiber, a metal fiber, and an organic fiber is mentioned, The air-hardening water-containing composition containing a fiber can reduce dripping and a crack. As a compounding quantity of a fiber, 0.01-5.0 mass parts is preferable with respect to 100 mass parts of said air-hardening substances.
Examples of the rust inhibitor include nitrites such as calcium nitrite, organic amines such as secondary amines, and precipitation-forming substances such as silicates. These rust inhibitors provide a passive film on the reinforcing bars. Since it forms, the effect which suppresses corrosion of a reinforcing bar is high. As a compounding quantity of a rust preventive agent, 0.01-5.0 mass parts is preferable with respect to 100 mass parts of said air-hardening substances.
Examples of the thickener include one or more selected from the group consisting of cellulose (methylcellulose), acrylic (polyacrylamide, acrylic polymer), glycol, and starch (pregelatinized starch). This thickener can suppress material separation and sagging due to the thickening effect. As a compounding quantity of a thickener, 0.01-5.0 mass parts is preferable with respect to 100 mass parts of said air-hardening substances.
The cement-mixing polymer is selected from the group consisting of aqueous polymer dispersions (rubber latex, resin emulsion, etc.), re-emulsifying powder resins (ethylene vinyl acetate, etc.), water-soluble polymers (polyvinyl alcohol, etc.), liquid polymers, etc. One or more types can be mentioned, and these cement-mixing polymers have the effect of enhancing adhesion by filling the space between cement hydrates with polymer particles and increasing the adhesion surface. As a compounding quantity of the polymer for cement admixture, 5-35 mass parts is preferable with respect to 100 mass parts of said air-hardening substances.
Furthermore, in addition to the above-described components, it is not prohibited to add various admixtures (materials) to the air-hardening material in the present invention as necessary, as long as the features of the present invention are not impaired. For example, high-performance water-reducing agent, high-performance AE water-reducing agent, AE water-reducing agent and dispersant such as fluidizing agent, expansion material, shrinkage reducing agent, rapid hardening agent (material), waterproof material, antifreezing agent, water retention agent, pigment And white powder, such as anti-whitening agent, foaming agent, antifoaming agent, water repellent, fine powder of pozzolanes such as silica fume, fine powder of blast furnace slag, fine powder of limestone, and the like.
The air-borne hydrated composition is in the form of a sheet, and preferably has a thickness of 3 to 15 mm, more preferably 5 to 10 mm. The shape and size of the air-borne water-containing composition are not particularly limited as long as it is within the workable range. For example, it is a square having a length of 50 to 2000 mm and a width of 50 to 2000 mm, or a circle having a diameter of 50 to 2000 mm. is there. More preferably, it is a square having a length of 50 to 300 mm and a width of 50 to 300 mm, or a circle having a diameter of 50 to 300 mm. If it is this size, it is convenient to carry and excellent workability.
２．簡易補修方法
次に、簡易補修方法について、（Ａ）被覆材の剥離工程、（Ｂ）気硬性含水組成物の貼付工程、および（Ｃ）気硬性含水組成物の炭酸化工程に分けて説明する。
（Ａ）被覆材の剥離工程
該工程は、簡易補修材の表面または裏面の被覆材を剥離して、気硬性含水組成物を露出させる工程である。ここで、表面および裏面とは、シート状に成形した気硬性含水組成物において対向する二面をいい、該組成物を板上に載置した場合の上面および底面に相当する面である。
（Ｂ）気硬性含水組成物の貼付工程
該工程は、前記気硬性含水組成物の露出面をコンクリートの劣化部分に貼付する工程である。コンクリートの劣化部分の面積が大きく、１枚の気硬性含水組成物のシートでは被いきれない場合は、劣化部分を被うのに十分大きな面積になるように、複数の気硬性含水組成物のシートを貼付する。
（Ｃ）気硬性含水組成物の炭酸化工程
該工程は、残りの全ての面の被覆材を剥離して、気硬性含水組成物を空気中の炭酸ガスに曝すことにより、炭酸化による硬化を進行させる工程である。前記「残りの全ての面」とは、例えば、剥離面が表面の場合は裏面をいい、さらに側面がある場合は裏面と側面をいう。
なお、本発明の簡易補修方法の対象になるコンクリートは、橋梁の床版、柱、桁部材等が挙げられる。これらのコンクリートを定期的に目視で点検した際に発見した劣化部分に、本発明のシート状の簡易補修材を貼り付けて、応急的に補修する。これにより、本格的な補修まで劣化の進行を抑制でき、補修費用の増加や劣化による不具合を予防できる。
2. Simple Repair Method Next, the simple repair method will be described by dividing it into (A) a coating material peeling step, (B) a pneumatic water-containing composition sticking step, and (C) a carbonaceous water-containing composition carbonation step. .
(A) Coating material peeling step This step is a step of peeling the coating material on the front surface or back surface of the simple repair material to expose the air-hardened water-containing composition. Here, the front surface and the back surface refer to two surfaces facing each other in the air-borne hydrous composition formed into a sheet shape, and are surfaces corresponding to the top surface and the bottom surface when the composition is placed on a plate.
(B) The sticking process of a pneumatic hard water composition This process is a process of sticking the exposed surface of the said hard water composition to the deteriorated part of concrete. When the area of the deteriorated portion of the concrete is large and cannot be covered with a single sheet of the pneumatic hard water-containing composition, a plurality of the hard water-containing water-containing compositions are formed so as to have a sufficiently large area to cover the deteriorated portion. Affix the sheet.
(C) Carbonation step of the air-borne water-containing composition In this step, the coating material on all remaining surfaces is peeled off, and the air-borne water-containing composition is exposed to carbon dioxide gas in the air, thereby hardening by carbonation. This is a process to proceed. The “all remaining surfaces” means, for example, the back surface when the peeling surface is the front surface, and the back surface and the side surface when there are further side surfaces.
In addition, the concrete used as the object of the simple repair method of this invention includes the floor slab of a bridge, a pillar, a girder member, etc. A simple repair material in the form of a sheet of the present invention is pasted on a deteriorated portion found when the concrete is visually inspected regularly, and repaired as soon as possible. Thereby, progress of deterioration can be suppressed until full-scale repair, and the malfunction by the increase in repair cost or deterioration can be prevented.
以下、本発明の実施例を図に基づいて具体的に説明するが、本発明は該実施例に限定されない。
１．簡易補修材の作製
水酸化カルシウム１００質量部に対し水を６０質量部添加して、ホバートミキサで混練し気硬性含水組成物を得た。次に、該組成物をポリスチレン製（被覆材）の皿に入れ、該組成物の上面をポリエチレンフィルム（被覆材）で覆って、図１の（ａ）に示す簡易補修材を作製した。簡易補修材のシートの寸法は、約２００ｍｍ×約１２０ｍｍ×約５ｍｍであった。
Hereinafter, although the Example of this invention is described concretely based on figures, this invention is not limited to this Example.
1. Preparation of Simple Repair Material 60 parts by mass of water was added to 100 parts by mass of calcium hydroxide, and kneaded with a Hobart mixer to obtain an air-hardened hydrous composition. Next, the composition was placed in a polystyrene (coating material) dish, and the upper surface of the composition was covered with a polyethylene film (coating material) to prepare a simple repair material shown in FIG. The dimension of the sheet of the simple repair material was about 200 mm × about 120 mm × about 5 mm.
２．簡易補修材の評価試験
前記簡易補修材について評価試験を行った。具体的には、以下のとおりである。
補修材を貼付する下地コンクリートは、ＪＩＳ Ａ ５３７１「プレキャスト無筋コンクリート製品」に規定する普通平板（３００×３００×６０ｍｍ）を用いた。図１の（ａ）に示すように、コンクリート平板の表面には、補修箇所を想定した１００×１００ｍｍの枠を設け、この枠内に簡易補修材を貼付するものとし、施工性、付着性、および硬化性状を評価した。
前記簡易補修材の表面のポリエチレンフィルムを剥離して、気硬性含水組成物を露出させ（図１の（ｂ））、該露出面をコンクリート平板の枠の中に貼付した（図１の（ｃ））。次に、ポリスチレン製の皿を剥離した後、気硬性含水組成物を空気中の炭酸ガスに１日間曝して、炭酸化により硬化させた（図１の（ｄ））。該硬化した気硬性含水組成物は、コンクリートに強固に付着しており、付着性、硬化性ともに良好であった。また、フィルムのはがし易さや、貼り付け易さなどの施工性についても良好であることを確認した。
2. Evaluation test of simple repair material An evaluation test was performed on the simple repair material. Specifically, it is as follows.
As the base concrete on which the repair material is pasted, an ordinary flat plate (300 × 300 × 60 mm) defined in JIS A 5371 “Precast unreinforced concrete product” was used. As shown in FIG. 1 (a), a surface of a concrete flat plate is provided with a frame of 100 × 100 mm assuming a repair location, and a simple repair material is pasted in this frame. And the curing property was evaluated.
The polyethylene film on the surface of the simple repair material was peeled off to expose the air-hardening water-containing composition ((b) in FIG. 1), and the exposed surface was stuck in the frame of the concrete flat plate ((c in FIG. 1). )). Next, after peeling off the polystyrene dish, the air-borne hydrated composition was exposed to carbon dioxide in the air for 1 day and cured by carbonation ((d) in FIG. 1). The cured air-borne hydrated composition was firmly attached to the concrete and had good adhesion and curability. Moreover, it confirmed that it was favorable also about workability, such as the ease of peeling of a film, and a sticking ease.
Claims (4)
（Ａ）前記簡易補修材の表面または裏面の被覆材を剥離して、気硬性含水組成物を露出させる、被覆材の剥離工程
（Ｂ）前記気硬性含水組成物の露出面をコンクリートの劣化部分に貼付する、気硬性含水組成物の貼付工程。
（Ｃ）残りの全ての面の被覆材を剥離して、気硬性含水組成物を空気中の炭酸ガスに曝すことにより炭酸化による硬化（気硬）を進行させる、気硬性含水組成物の炭酸化工程。 A method of repairing a deteriorated portion of concrete using the simple repair material according to any one of claims 1 to 3, comprising the following steps (A) to (C): Method.
(A) The coating material peeling process which peels off the coating material of the surface or back surface of the said simple repair material, and exposes an air-hardening water-containing composition (B) The exposed surface of the said air-hardening water-containing composition is a deterioration part of concrete A sticking process of the air-hardening water-containing composition to be attached to the skin.
(C) Carbonation of a pneumatic hydrated composition in which the coating material on all the remaining surfaces is peeled off and curing (carbonized) is promoted by carbonation by exposing the pneumatic hydrated composition to carbon dioxide in the air. Process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015076098A JP2016196743A (en) | 2015-04-02 | 2015-04-02 | Simple repair material and simple repair method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015076098A JP2016196743A (en) | 2015-04-02 | 2015-04-02 | Simple repair material and simple repair method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2016196743A true JP2016196743A (en) | 2016-11-24 |
Family
ID=57357613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2015076098A Pending JP2016196743A (en) | 2015-04-02 | 2015-04-02 | Simple repair material and simple repair method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2016196743A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021130267A (en) * | 2020-02-20 | 2021-09-09 | 国立大学法人東海国立大学機構 | Surface protective sheet for structure and structure with surface protective sheet |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003305712A (en) * | 2001-09-11 | 2003-10-28 | Rikuo Himeno | Method for stabilizing water-containing lime plaster composition |
| JP2004168645A (en) * | 2002-10-30 | 2004-06-17 | Hagihara Industries Inc | Polypropylene fiber for cement reinforcement |
| JP2007154653A (en) * | 2005-11-10 | 2007-06-21 | Ichiro Tsukada | Covered green plaster sheet |
| JP2009052363A (en) * | 2007-08-29 | 2009-03-12 | Kikusui Chemical Industries Co Ltd | Method for treating surface of asbestos-containing building material |
| JP2013129570A (en) * | 2011-12-22 | 2013-07-04 | Taiheiyo Materials Corp | Heavy weight polymer cement mortar |
| US20140261091A1 (en) * | 2013-03-15 | 2014-09-18 | Rory BRENNAN | Plaster patching compositions and methods for making and using same |
-
2015
- 2015-04-02 JP JP2015076098A patent/JP2016196743A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003305712A (en) * | 2001-09-11 | 2003-10-28 | Rikuo Himeno | Method for stabilizing water-containing lime plaster composition |
| JP2004168645A (en) * | 2002-10-30 | 2004-06-17 | Hagihara Industries Inc | Polypropylene fiber for cement reinforcement |
| JP2007154653A (en) * | 2005-11-10 | 2007-06-21 | Ichiro Tsukada | Covered green plaster sheet |
| JP2009052363A (en) * | 2007-08-29 | 2009-03-12 | Kikusui Chemical Industries Co Ltd | Method for treating surface of asbestos-containing building material |
| JP2013129570A (en) * | 2011-12-22 | 2013-07-04 | Taiheiyo Materials Corp | Heavy weight polymer cement mortar |
| US20140261091A1 (en) * | 2013-03-15 | 2014-09-18 | Rory BRENNAN | Plaster patching compositions and methods for making and using same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021130267A (en) * | 2020-02-20 | 2021-09-09 | 国立大学法人東海国立大学機構 | Surface protective sheet for structure and structure with surface protective sheet |
| JP7412705B2 (en) | 2020-02-20 | 2024-01-15 | 国立大学法人東海国立大学機構 | Surface protection sheets for structures and structures with surface protection sheets |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4403155B2 (en) | Concrete water channel repair method | |
| AU2013305128B2 (en) | Multi-purpose mortar or cement compositions for construction applications | |
| Perkins | Repair, protection and waterproofing of concrete structures | |
| CN106278093A (en) | Fast hard Waterproof ceramic tile adhesive agent | |
| WO2021010456A1 (en) | Structure protection sheet, execution method and precast member using structure protection sheet, and method for manufacturing precast member | |
| Olivia | Durability related properties of low calcium fly ash based geopolymer concrete | |
| CN102757196B (en) | Waterproof cement additive and cement containing same | |
| JP2017193470A (en) | Concrete product and manufacturing method of concrete product | |
| JP2006306646A (en) | Alumina cement composition and repairing method using the same | |
| JP2016196743A (en) | Simple repair material and simple repair method | |
| JP6288670B2 (en) | Steel material anticorrosive primer, steel material anticorrosion coating method and anticorrosive steel material | |
| JP4642650B2 (en) | Surface coated mortar or concrete | |
| JP2016053254A (en) | Deck plate waterproof method | |
| JP2002137954A (en) | Hydraulic composition and paste, mortar and concrete using it | |
| JP7465451B2 (en) | Cement composition, mortar composition, and method for repairing concrete structure | |
| JP6036262B2 (en) | Underground polymer cement composition for waterproofing of road floor board and repair / reinforcement method of road floor board using the composition | |
| JP5919619B2 (en) | Repair method for concrete structures | |
| US5576062A (en) | Chemically resistant coating for concrete and masonry structures | |
| CN108276844B (en) | Self-closing resin waterproof coating and preparation method and application thereof | |
| CN102399091B (en) | Water-resistant salt-resistant concrete protecting agent and preparation method thereof | |
| WO2019195577A1 (en) | Non-toxic hardened synthetic material containing encapsulated toxic and non-toxic particles | |
| JPH10168340A (en) | Inorganic aqueous coating material | |
| JP2010155642A (en) | Cement composition and prolonged storage method thereof | |
| JP2004238497A (en) | Concrete-based waterproof adhesive | |
| JP2001302321A (en) | Mortar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20180330 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20190129 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20190205 |
|
| A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20190327 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20190904 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20200304 |