JP2015030987A - Injection material injecting method for concrete structure, and injection material used therefor - Google Patents
Injection material injecting method for concrete structure, and injection material used therefor Download PDFInfo
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- JP2015030987A JP2015030987A JP2013159087A JP2013159087A JP2015030987A JP 2015030987 A JP2015030987 A JP 2015030987A JP 2013159087 A JP2013159087 A JP 2013159087A JP 2013159087 A JP2013159087 A JP 2013159087A JP 2015030987 A JP2015030987 A JP 2015030987A
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- epoxy resin
- injection material
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- 238000002347 injection Methods 0.000 title claims abstract description 45
- 239000007924 injection Substances 0.000 title claims abstract description 45
- 239000000463 material Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000003822 epoxy resin Substances 0.000 claims abstract description 53
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 53
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 17
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims abstract description 16
- 150000001875 compounds Chemical class 0.000 claims abstract description 14
- 229920001021 polysulfide Polymers 0.000 claims abstract description 14
- 239000005077 polysulfide Substances 0.000 claims abstract description 14
- 150000008117 polysulfides Polymers 0.000 claims abstract description 14
- -1 alicyclic amine Chemical class 0.000 claims abstract description 10
- 229930185605 Bisphenol Natural products 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract description 6
- 230000008961 swelling Effects 0.000 abstract description 4
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 abstract description 3
- IVSZLXZYQVIEFR-UHFFFAOYSA-N m-xylene Chemical group CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009191 jumping Effects 0.000 abstract 1
- 230000002787 reinforcement Effects 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- LCFVJGUPQDGYKZ-UHFFFAOYSA-N Bisphenol A diglycidyl ether Chemical compound C=1C=C(OCC2OC2)C=CC=1C(C)(C)C(C=C1)=CC=C1OCC1CO1 LCFVJGUPQDGYKZ-UHFFFAOYSA-N 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- IMUDHTPIFIBORV-UHFFFAOYSA-N aminoethylpiperazine Chemical compound NCCN1CCNCC1 IMUDHTPIFIBORV-UHFFFAOYSA-N 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- LULCPJWUGUVEFU-UHFFFAOYSA-N Phthiocol Natural products C1=CC=C2C(=O)C(C)=C(O)C(=O)C2=C1 LULCPJWUGUVEFU-UHFFFAOYSA-N 0.000 description 2
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 230000003796 beauty Effects 0.000 description 2
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- WORVYYDNYUXZBS-UHFFFAOYSA-N 2,4,6-tris(dimethylamino)-3-methylphenol Chemical compound CN(C)C1=CC(N(C)C)=C(O)C(N(C)C)=C1C WORVYYDNYUXZBS-UHFFFAOYSA-N 0.000 description 1
- AHDSRXYHVZECER-UHFFFAOYSA-N 2,4,6-tris[(dimethylamino)methyl]phenol Chemical compound CN(C)CC1=CC(CN(C)C)=C(O)C(CN(C)C)=C1 AHDSRXYHVZECER-UHFFFAOYSA-N 0.000 description 1
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical group 0.000 description 1
- 229940072282 cardura Drugs 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- RUZYUOTYCVRMRZ-UHFFFAOYSA-N doxazosin Chemical compound C1OC2=CC=CC=C2OC1C(=O)N(CC1)CCN1C1=NC(N)=C(C=C(C(OC)=C2)OC)C2=N1 RUZYUOTYCVRMRZ-UHFFFAOYSA-N 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 239000011433 polymer cement mortar Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
Description
本発明は，コンクリート構造物に発生したひび割れや，コンクリート構造物内部にあるジャンカや，ＲＣ造においてコンクリート打設時等に鉄筋周囲に生じた空隙にエポキシ樹脂を注入する際のコンクリート構造物の注入材注入工法及びこれに使用する注入材に関する。 The present invention is a method for injecting a concrete structure when an epoxy resin is injected into a crack generated around a reinforcing bar in a concrete structure, such as a crack generated in a concrete structure, a junker inside the concrete structure, or in RC construction. The present invention relates to a material injection method and an injection material used therefor.
従来，コンクリート建築物にひび割れが生じて亀裂が発生したり，コンクリート構造物内部にジャンカや鉄筋周囲に空隙がある場合，これらの欠陥は漏水の原因になり，またコンクリート構造物としての強度が不足することがあるため，エポキシ樹脂等を注入して補修する必要がある。 Conventionally, when cracks occur in concrete buildings, or when there are voids around the junkers or reinforcing bars inside the concrete structure, these defects can cause water leakage, and the strength of the concrete structure is insufficient. Therefore, it is necessary to repair by injecting epoxy resin.
これらの欠陥を補修する方法としては，コンクリート構造物の亀裂部等にドリルで穴を穿孔し，該穴に高圧注入バルブのノズルを差し込みエポキシ樹脂を注入して補修する高圧工法や，注射器形状をした注入器において，シリンダとピストン間に弾性体を介在させ，同様にコンクリート構造物の亀裂部等にドリルで穴を穿孔し，該穴に注入器のノズルを差し込み弾性体の圧縮力でシリンダ内のエポキシ樹脂を注入して補修する低圧工法等が知られている。 As a method for repairing these defects, a high-pressure construction method such as drilling a hole in a cracked part of a concrete structure with a drill, inserting a nozzle of a high-pressure injection valve into the hole and injecting epoxy resin, or a syringe shape can be used. In the injector, an elastic body is interposed between the cylinder and the piston. Similarly, a hole is drilled in a crack portion of the concrete structure with a drill, and the nozzle of the injector is inserted into the hole by the compression force of the elastic body. A low-pressure method of repairing by injecting an epoxy resin is known.
また，コンクリート構造物のひび割れや，ジャンカ，鉄筋周囲の空隙に注入充填剤を注入する方法において，コンクリートやモルタル部分に，コンクリートやモルタル表面から鉄筋位置に達する非貫通穴（Ａ）または，深さ１〜１００ｍｍ程度の非貫通穴（Ａ）を穿つ，あるいは穴を開けずに，コンクリートやモルタル部分のひび割れ部（Ｂ）と連通し，該穴（Ａ）の口端部より穴の先端，又はひび割れ部（Ｂ）に向けて注入材（Ｘ）を注入するに際し，注入器（Ｙ）を用い，一定の圧力で，穴（Ａ）又はひび割れ部（Ｂ）内に注入材（Ｘ）を注入すると共に，穴（Ａ）内と注入治具（２）又は注入治具（２）内の空気を外部に抜き，穴（Ａ）内と注入治具（２）又は注入治具（２）内を低圧状態にしながら穴（Ａ）内，又は，ひび割れ部（Ｂ）から注入材（Ｘ）を注入することを特徴とするコンクリート構造物への注入材の注入方法が提案されている（特許文献１）。 Also, in the method of injecting filler into cracks in concrete structures, junkers, and rebars, non-through holes (A) or depths reaching the rebar position from the concrete or mortar surface in the concrete or mortar part. Drill a non-through hole (A) of about 1 to 100 mm, or communicate with a cracked part (B) of concrete or mortar without opening a hole, or the tip of the hole from the mouth end of the hole (A), or When injecting the injection material (X) toward the cracked portion (B), the injection material (X) is injected into the hole (A) or the cracked portion (B) at a constant pressure using an injector (Y). At the same time, the air in the hole (A) and the injection jig (2) or the injection jig (2) is evacuated to the outside, and the hole (A) and the injection jig (2) or the injection jig (2) In the hole (A) or cracked part ( ) Injection method of injecting material into the concrete structure, characterized by injecting grout to (X) has been proposed (Patent Document 1).
しかしながら，コンクリート構造物にドリルで穿孔した穴から注入剤としてエポキシ樹脂を注入した場合，該穿孔穴には硬化後のエポキシ樹脂が充填されることになり，気温が低い冬から春に注入工事が行なわれてエポキシ樹脂が硬化した場合，夏季に該エポキシ樹脂の頭部が熱膨張により膨らんでコンクリートの壁面や床面である表面より突出することがあるという課題がある。特に該膨れは，コンクリートの壁面や床面全体が薄塗り塗料等で塗装されている場合は外観上その凹凸が目立つという課題となっていた。 However, when an epoxy resin is injected as an injectant from a hole drilled into a concrete structure, the hole is filled with an epoxy resin after curing. When the epoxy resin is cured by being carried out, there is a problem that the head of the epoxy resin swells due to thermal expansion in the summer and protrudes from the surface of the concrete wall or floor. In particular, the swelling has been a problem that the unevenness is conspicuous in the appearance when the concrete wall surface or the entire floor surface is coated with a thin paint or the like.
本発明が解決しようとする課題は，気温が低い冬から春にかけて，コンクリート構造物にドリルで穿孔した穴から注入剤としてエポキシ樹脂を注入して硬化させても，夏季に該エポキシ樹脂の頭部が膨らんでコンクリート壁面や床面である表面より突出することのないコンクリート構造物の注入材注入工法及びこれに使用する注入材を提供することにある。 The problem to be solved by the present invention is that even if the epoxy resin is injected and cured from a hole drilled in a concrete structure from winter to spring when the temperature is low, the head of the epoxy resin is cured in the summer. An object of the present invention is to provide an injection material injection method for a concrete structure that does not protrude from the surface of a concrete wall or floor, and an injection material used therefor.
請求項１記載の発明は，コンクリート構造物のひび割れやジャンカや鉄筋周囲の空隙にエポキシ樹脂を注入するにあたって，コンクリート構造物に穿孔し，該穿孔穴よりひび割れやジャンカや鉄筋周囲の空隙に注入材としてエポキシ樹脂を注入して硬化させ，穿孔穴を該エポキシ樹脂で充填硬化させるコンクリート構造物の注入材注入工法において，エポキシ樹脂は，液状ビスフェノールＡ型ジグリシジルエーテルと，スチレン付加メタキシレンジアミンと，脂環式アミンと，メルカプタン末端ポリサルファイド化合物とから成ることを特徴とするコンクリート構造物の注入材注入工法を提供する。 In the invention described in claim 1, when injecting epoxy resin into cracks in concrete structures or gaps around junkers or reinforcing bars, the concrete structure is drilled and injected into cracks, gaps around junkers or reinforcing bars from the holes. In an injection material injection method for a concrete structure in which an epoxy resin is injected and cured, and a hole is filled and cured with the epoxy resin, the epoxy resin includes liquid bisphenol A type diglycidyl ether, styrene-added metaxylenediamine, Provided is an injecting method for injecting a concrete structure comprising an alicyclic amine and a mercaptan-terminated polysulfide compound.
請求項２記載の発明は，請求項１記載のコンクリート構造物の注入材注入工法に使用する注入材であって，液状ビスフェノールＡ型ジグリシジルエーテルと，スチレン化メタキシレンジアミンと，脂環式アミンと，メルカプタン末端ポリサルファイド化合物とから成ることを特徴とするコンクリート構造物の注入材を提供する。 The invention described in claim 2 is an injection material used in the method for injecting concrete material according to claim 1, wherein the liquid bisphenol A type diglycidyl ether, styrenated metaxylenediamine, and alicyclic amine are used. And an injection material for a concrete structure, characterized by comprising a mercaptan-terminated polysulfide compound.
本発明のコンクリート構造物の注入材注入工法は，気温が低い冬から春にかけて，コンクリート構造物にドリルで穿孔した穴から注入材として請求項１記載のエポキシ樹脂を注入して硬化させても，夏季に該エポキシ樹脂の頭部が膨らんでコンクリート壁面や床面である表面より突出することがないという効果がある。 The injection method for injecting the concrete structure according to the present invention may be performed by injecting the epoxy resin according to claim 1 as an injection material from a hole drilled in the concrete structure from winter to spring when the temperature is low, and curing it. In the summer, there is an effect that the head of the epoxy resin does not bulge and protrude from the surface of the concrete wall or floor.
特にコンクリートの壁面や床面全体が薄塗り塗料等で塗装されている場合は上記エポキシ樹脂がコンクリートの表面より突出することがないため外観上の美観が保たれるという効果がある。 In particular, when the concrete wall surface or the entire floor surface is coated with a thin paint or the like, the epoxy resin does not protrude from the surface of the concrete, so that the appearance is maintained.
また本発明の請求項２記載のコンクリート構造物の注入材は，請求項１記載のコンクリート構造物の注入材注入工法に使用する注入材であって，該注入材注入工法に使用することにより，冬季にドリルで穿孔した穴に充填硬化した注入材が夏季に膨らんでコンクリート壁面や床面である表面より飛び出ることがないという効果がある。 Further, the concrete structure injecting material according to claim 2 of the present invention is an injecting material used in the concrete structure injecting material injecting method according to claim 1, and is used in the injecting material injecting method. There is an effect that the injection material filled and hardened in the hole drilled in the winter does not swell in the summer and protrudes from the concrete wall or floor surface.
特にコンクリートの壁面や床面全体が薄塗り塗料等で塗装されている場合は，冬季にドリルで穿孔した穴に充填硬化した注入材が夏季にコンクリートの表面より突出することがないため外観上の美観が保たれるという効果がある。 In particular, when the concrete wall and the entire floor are coated with thin paint, the injected material filled and hardened in the holes drilled in the winter does not protrude from the concrete surface in the summer. There is an effect that the beauty is maintained.
以下本発明について詳細に説明する。 The present invention will be described in detail below.
本発明にかかるコンクリート構造物は，特には注入材を注入後に外観上の美観が要求される建築物に関するが，コンクリート表面を穿孔するにあたっては，まずは該コンクリート表面を全面サンディングしてひび割れ等を明確し，またコンクリート構造物の断面が欠損して鉄筋が露出している場合には，その欠損部分にポリマーセメントモルタル等にて予め断面補修を行なっておく。 The concrete structure according to the present invention particularly relates to a building that requires an aesthetic appearance after injecting an injection material. When drilling a concrete surface, first, the concrete surface is completely sanded to clearly show cracks and the like. If the cross section of the concrete structure is damaged and the reinforcing bar is exposed, the cross section is repaired in advance with a polymer cement mortar or the like.
次に注入材であるエポキシ樹脂を注入するポイントに印をつけ，直径６〜１０ｍｍ程度で深さ４０〜２００ｍｍ程度にドリルにて穿孔し，該穿孔穴に残っている削粉を吸塵して清掃する。清掃後，例えばエポキシ樹脂をシリンダ内に充填した注射器形状の注入器のノズルを該穿孔穴に挿し込みセットしてシリンダ内のエポキシ樹脂をひび割れ等に注入する。 Next, mark the point for injecting the epoxy resin, which is the injection material, drill with a diameter of about 6 to 10 mm and a depth of about 40 to 200 mm, and clean the dust by removing the dust remaining in the hole. To do. After cleaning, for example, the nozzle of a syringe-shaped injector filled with epoxy resin in the cylinder is inserted and set in the perforated hole, and the epoxy resin in the cylinder is injected into a crack or the like.
注入するエポキシ樹脂は，液状ビスフェノール型ジグリシジルエーテルと，スチレン付加メタキシレンジアミンと，脂環式アミンと，メルカプタン末端ポリサルファイド化合物とから成り，ＪＩＳＡ６０２４−２００８建築補修用注入エポキシ樹脂の表４ 硬質形エポキシ樹脂の品質 低粘度形冬用に規定される規格値を満足するものが好ましい。 The epoxy resin to be injected is composed of liquid bisphenol-type diglycidyl ether, styrene-added metaxylene diamine, alicyclic amine, and mercaptan-terminated polysulfide compound. Table 4 Rigid Epoxy Resins for JISA6024-2008 Building Repair Resin quality Those satisfying the standard values specified for low-viscosity winter are preferred.
エポキシ樹脂が硬化後は注入器を撤去し，穿孔穴に満たされている硬化後のエポキシ樹脂をコンクリート表面と面一になるようにサンディング等により調整する。 After the epoxy resin is cured, remove the injector and adjust the cured epoxy resin filled in the perforated holes by sanding or the like so that it is flush with the concrete surface.
その後，美観のため，コンクリート表面全体に塗料や塗材を塗布して仕上げる。 Then, for the sake of beauty, paint and coating materials are applied to the entire concrete surface.
液状ビスフェノール型ジグリシジルエーテル
本発明でいうエポキシ樹脂は，主剤となる液状のビスフェノール型ジグリシジルエーテルと，これと常温で反応する硬化剤となるスチレン付加メタキシレンジアミンと脂環式アミンとメルカプタン末端ポリサルファイド化合物とから成るが，液状ビスフェノール型ジグリシジルエーテルとは，液状ビスフェノールＡ型ジグリシジルエーテル，液状ビスフェノールＦ型ジグリシジルエーテル，液状ビスフェノールＡＤ型ジグリシジルエーテル，及びこれらの変性物を言い，単独或いは併せて用いてもよく，また反応性若しくは非反応性希釈剤を配合しても良い。最も多く配合する液状ビスフェノール型ジグリシジルエーテルの軟化点は３５℃以下が好ましく，このような液状ビスフェノール型ジグリシジルエーテルとしては，液状ビスフェノールＡ型ジグリシジルエーテルが，汎用性，コスト等で適当である。市販の液状ビスフェノールＡ型ジグリシジルエーテルとしては，ＤＥＲ−３３１Ｎ（商品名，ダウケミカル社製，エポキシ当量１７０〜１９０）がある。液状ビスフェノール型ジグルシジルエーテルの配合量はエポキシ樹脂１００重量部中，５０重量部〜７５重量部であり，５０重量部未満では十分な硬化物性が得られず，７５重量部超では注入材としての粘度が高くなり作業性が劣り注入がスムーズに行われなくなる。
Liquid bisphenol-type diglycidyl ether The epoxy resin referred to in the present invention comprises a liquid bisphenol-type diglycidyl ether as a main agent, a styrene-added metaxylenediamine, an alicyclic amine, and a mercaptan-terminated polysulfide as a curing agent that reacts with this at room temperature. The liquid bisphenol-type diglycidyl ether includes liquid bisphenol A-type diglycidyl ether, liquid bisphenol F-type diglycidyl ether, liquid bisphenol AD-type diglycidyl ether, and modified products thereof. Or a reactive or non-reactive diluent may be added. The softening point of the most liquid bisphenol diglycidyl ether blended is preferably 35 ° C. or lower, and as such liquid bisphenol diglycidyl ether, liquid bisphenol A diglycidyl ether is suitable in terms of versatility and cost. . As a commercially available liquid bisphenol A type diglycidyl ether, there is DER-331N (trade name, manufactured by Dow Chemical Company, epoxy equivalents 170 to 190). The amount of liquid bisphenol diglycidyl ether is 50 to 75 parts by weight in 100 parts by weight of the epoxy resin. If it is less than 50 parts by weight, sufficient cured properties cannot be obtained. Viscosity increases and workability is inferior, and injection cannot be performed smoothly.
スチレン付加メタキシレンジアミン
本発明に使用するスチレン付加メタキシレンジアミンは，メタキシレンジアミンにスチレンを付加したものであり，活性水素当量としては８０〜１２０が好ましい。市販のスチレン付加率９９％のスチレン付加メタキシレンジアミンとしては，ガスカミン２４０（活性水素当量１０３，粘度６６ｍＰａ・ｓ／２５℃）がある。スチレン付加メタキシレンジアミンの配合量は，エポキシ樹脂１００重量部中，１０重量部〜２０重量部であり，１０重量部未満では湿潤面に対する接着性が不十分になると共に注入材としての粘度が高くなり作業性が劣り注入がスムーズに行われなくなり，２０重量部超では硬化物が脆くなる。
Styrene-added metaxylenediamine The styrene-added metaxylenediamine used in the present invention is obtained by adding styrene to metaxylenediamine, and the active hydrogen equivalent is preferably 80 to 120. A commercially available styrene-added metaxylenediamine having a styrene addition rate of 99% is gascamine 240 (active hydrogen equivalent 103, viscosity 66 mPa · s / 25 ° C.). The compounding amount of styrene-added metaxylenediamine is 10 to 20 parts by weight in 100 parts by weight of the epoxy resin. If it is less than 10 parts by weight, the adhesiveness to the wet surface becomes insufficient and the viscosity as an injection material is high. Therefore, the workability is inferior and the injection is not smoothly performed, and if it exceeds 20 parts by weight, the cured product becomes brittle.
脂環式アミン
本発明に使用する脂環式アミンとは，イソホロンジアミン，４，４´−ジアミノシクロヘキサン，ピペラジン，Ｎ−アミノエチルピペラジン等及びこれらの変性物をいい，特にはＮ−アミノエチルピペラジン及びこの変性物が，硬化反応性が良好であるため好ましい。市販のＮ−アミノエチルピペラジンのビスフェノールＡ型ジグリシジルエーテル付加物として，ダイトクラールＡ−５９２９Ｂ（活性水素当量７８．７，粘度９０〜２００ｍＰ・ｓ／２５℃，大都産業株式会社製）がある。脂環式アミンの配合量は，エポキシ樹脂１００重量部中，１０重量部〜２０重量部であり，１０重量部未満では湿潤面に対する接着性が不十分になると共に耐熱性が低くなり，２０重量部超では注入材としての粘度が高くなり作業性が劣り注入がスムーズに行われなくなる。
Cycloaliphatic amine The cycloaliphatic amine used in the present invention refers to isophorone diamine, 4,4'-diaminocyclohexane, piperazine, N-aminoethylpiperazine and the like, and modified products thereof, particularly N-aminoethylpiperazine. And this modified product is preferable because of its good curing reactivity. As a commercially available bisphenol A-type diglycidyl ether adduct of N-aminoethylpiperazine, there is Daitokural A-5929B (active hydrogen equivalent 78.7, viscosity 90 to 200 mP · s / 25 ° C., manufactured by Daito Sangyo Co., Ltd.). The compounding amount of the alicyclic amine is 10 to 20 parts by weight in 100 parts by weight of the epoxy resin, and if it is less than 10 parts by weight, the adhesiveness to the wet surface is insufficient and the heat resistance is reduced to 20 parts by weight. If it exceeds the part, the viscosity as the injection material becomes high, the workability is inferior, and the injection is not performed smoothly.
メルカプタン末端ポリサルファイド化合物
本発明に使用するメルカプタン末端ポリサルファイド化合物とは，分子中にジサルファイド結合を有し，末端にメルカプタン基を有する化合物である。好ましいメルカプタン末端ポリサルファイド化合物としては，分子中に−ＣＨ２ＣＨ２ＯＣＨ２ＯＣＨ２ＣＨ２ＳＳ−または−ＣＨ２ＣＨ２ＯＣＨ２ＣＨ２ＯＣＨ２ＣＨ２ＳＳ−で示されるようなポリサルファイド結合含有構造単位を有し，末端がメルカプタン基である化合物を挙げることができる。市販のメルカプタン末端ポリサルファイド化合物としては，チオコールＬＰ−３(商品名，平均分子量１０００，粘度１．２Ｐａ・ｓ／２５℃)がある。メルカプタン末端ポリサルファイド化合物の配合量は，エポキシ樹脂１００重量部中，３重量部〜１０重量部であり，３重量部未満では湿潤面に対する接着性が不十分となり，１０重量部超で硬化物が柔らかくなりすぎる。
Mercaptan-terminated polysulfide compound The mercaptan-terminated polysulfide compound used in the present invention is a compound having a disulfide bond in the molecule and a mercaptan group at the terminal. Preferred mercaptan-terminated polysulfide compounds include polysulfide bond-containing structural units represented by —CH 2 CH 2 OCH 2 OCH 2 CH 2 SS— or —CH 2 CH 2 OCH 2 CH 2 OCH 2 CH 2 SS— in the molecule. And a compound whose terminal is a mercaptan group. As a commercially available mercaptan-terminated polysulfide compound, there is thiocol LP-3 (trade name, average molecular weight 1000, viscosity 1.2 Pa · s / 25 ° C.). The compounding amount of the mercaptan-terminated polysulfide compound is 3 to 10 parts by weight in 100 parts by weight of the epoxy resin. If it is less than 3 parts by weight, the adhesiveness to the wet surface is insufficient, and the cured product is soft when it exceeds 10 parts by weight. Too much.
以下，実施例及び比較例にて具体的に説明する。 Hereinafter, it demonstrates concretely in an Example and a comparative example.
実施例及び比較例
実施例又は比較例として，表１に示す配合にて主剤と硬化剤を分けた状態で，各材料を均一に混合し実施例又は比較例のエポキシ樹脂とした。該エポキシ樹脂は，試験の直前に主剤と硬化剤を均一に混合して，試験に供した。表１中，ビスフェノールＡ型ジグリシジルエーテルにはＤＥＲ３３１Ｎを，ビスフェノールＦ型ジグリシジルエーテルにはＪＥＲ−８０７（エポキシ当量；１６０〜１７５，粘度３〜４．５Ｐａ・ｓ／２５℃，商品名，三菱化学社製）を，３級カルボン酸モノグリシジルエーテルにはカージュラＥ（エポキシ当量；２４０〜２６０，粘度５〜１５ｍＰａ・ｓ／２５℃，商品名，三菱化学社製）を，スチレン付加メタキシレンジアミンにはガスカミン２４０を，脂環式アミンにはダイトクラールＡ−５９２９Ｂを，メルカプタン末端ポリサルファイド化合物にはチオコールＬＰ−３を，脂肪族ポリアミンＡにはエピキュア３１０７（活性水素当量；９５，粘度０．４〜０．８Ｐａ・ｓ／２５℃，商品名，三菱化学社製）を，脂肪族ポリアミンＢにはハードナーＯＨ−８０２（活性水素当量；５２，粘度０．４〜０．８Ｐａ・ｓ／２５℃，商品名，ＰＴＩジャパン株式会社製）を，２，４，６トリジメチルアミノメチルフェノールにはアンカミンＫ−５４（商品名，エアプロダクツジャパン社製）を硬化促進剤として，それぞれ使用した。
Examples and comparative examples As examples or comparative examples, the materials shown in Table 1 were separated into the main agent and the curing agent, and the materials were uniformly mixed to obtain the epoxy resin of the examples or comparative examples. . The epoxy resin was subjected to the test by mixing the main agent and the curing agent uniformly immediately before the test. In Table 1, DER331N is used for bisphenol A type diglycidyl ether, and JER-807 (epoxy equivalent; 160 to 175, viscosity is 3 to 4.5 Pa · s / 25 ° C., trade name, Mitsubishi, for bisphenol F type diglycidyl ether. Chemical Co., Ltd.), tertiary carboxylic acid monoglycidyl ether, Cardura E (epoxy equivalent: 240-260, viscosity 5-15 mPa · s / 25 ° C., trade name, manufactured by Mitsubishi Chemical Corporation), styrene-added metaxylenediamine Is gascamine 240, alicyclic amine is dytochlor A-5929B, mercaptan-terminated polysulfide compound is thiocol LP-3, aliphatic polyamine A is epicure 3107 (active hydrogen equivalent; 95, viscosity 0.4 To 0.8 Pa · s / 25 ° C., trade name, manufactured by Mitsubishi Chemical Corporation) with aliphatic polyamine B Is hardener OH-802 (active hydrogen equivalent; 52, viscosity 0.4 to 0.8 Pa · s / 25 ° C., trade name, manufactured by PTI Japan Co., Ltd.), 2,4,6 tridimethylaminomethylphenol is ancamine K-54 (trade name, manufactured by Air Products Japan) was used as a curing accelerator.
評価項目及び評価方法Evaluation items and evaluation methods
膨れ試験
ＪＩＳＡ５３７１の３００ｍｍ×３００ｍｍ×厚さ６０ｍｍのコンクリート平板を５℃下で水中に２４時間全浸漬し，その後表面部分を水中から引き上げて厚さ方向の下部３０ｍｍのみを水に浸漬した状態とする。この状態でコンクリート表面を一の端部から相対する他端方向に２００ｍｍの長さで深さ１５ｍｍ幅１５ｍｍでＵカットする。次に５℃に調整した実施例または比較例のエポキシ樹脂の主剤と硬化剤をそれぞれ十分に混合してＵカット部に充填して硬化させ，５℃にて１４日間養生し，実施例又は比較例の湿潤状態の膨れ試験用試験体とした。
Swelling test A 300 mm x 300 mm x 60 mm thick concrete plate of JISA5371 is fully immersed in water at 5 ° C for 24 hours, and then the surface portion is pulled up from the water so that only the lower 30 mm in the thickness direction is immersed in water. . In this state, the concrete surface is U-cut with a length of 200 mm, a depth of 15 mm, and a width of 15 mm from the one end to the other end. Next, the epoxy resin main component and curing agent of Example or Comparative Example adjusted to 5 ° C. were mixed thoroughly, filled into a U-cut part, cured, and cured at 5 ° C. for 14 days. A test sample for a swollen test in a wet state was used.
同様にＪＩＳＡ５３７１の３００ｍｍ×３００ｍｍ×厚さ６０ｍｍのコンクリート平板を５℃下に２４時間放置し表面の含水率を５％（ケット水分計ＨＩ−５２０，コンクリートレンジ）以下であることを確認する。この状態でコンクリート表面を一の端部から相対する他端方向に２００ｍｍの長さで深さ１５ｍｍ幅１５ｍｍでＵカットする。次に５℃に調整した実施例または比較例のエポキシ樹脂の主剤と硬化剤をそれぞれ十分に混合してＵカット部に充填して硬化させ，５℃にて１４日間養生し，実施例又は比較例の乾燥状態の膨れ試験用試験体とした。 Similarly, a 300 mm × 300 mm × 60 mm thick concrete plate of JISA5371 is allowed to stand at 5 ° C. for 24 hours to confirm that the surface moisture content is 5% (Ket moisture meter HI-520, concrete range) or less. In this state, the concrete surface is U-cut with a length of 200 mm, a depth of 15 mm, and a width of 15 mm from the one end to the other end. Next, the epoxy resin main component and curing agent of Example or Comparative Example adjusted to 5 ° C. were mixed thoroughly, filled into a U-cut part, cured, and cured at 5 ° C. for 14 days. A dry swell test specimen was used as an example.
次にコンクリート平板のＵカット部に充填し硬化した，実施例または比較例の湿潤状態及び乾燥状態の膨れ試験用試験体のエポキシ樹脂表面の上記一の端部に，歪みゲージとしてプラスチック用ゲージＧＦＬＡ−６−５０−３ＬＴ（（株）東京測器研究所製）を貼り付け，試験体の温度を５℃から３５℃に変化させ測定される歪み(μ)をデータロガーＴＤＳ−３０３（(株)東京測器研究所製）にて測定した。併せて歪みが１００μ超を×，１００μ以下を○として評価した。 Next, the plastic gauge GFLA is used as a strain gauge at the one end of the epoxy resin surface of the wet and dry swell test specimens of Examples and Comparative Examples which are filled and cured in the U-cut part of the concrete flat plate. -6-50-3LT (manufactured by Tokyo Sokki Kenkyujo Co., Ltd.) was pasted, and the strain (μ) measured by changing the temperature of the test specimen from 5 ° C. to 35 ° C. was measured as data logger TDS-303 ( Measured by Tokyo Sokki Kenkyujo Co., Ltd.). In addition, the strain was evaluated as x when the strain was over 100 μ, and ○ when the strain was 100 μ or less.
ＪＩＳ Ａ６０２４−２００８建築補修用注入エポキシ樹脂の表４ 硬質形エポキシ樹脂の品質試験
ＪＩＳ Ａ６０２４−２００８建築補修用注入エポキシ樹脂の規定に従い，該ＪＩＳ規格の表４ 硬質形エポキシ樹脂の品質 低粘度型冬用の各試験項目について評価した。
JIS A6024-2008 Building repair injection epoxy resin Table 4 Quality test of hard epoxy resin JIS A6024-2008 Building repair injection epoxy resin according to the provisions of JIS standard Table 4 Hard epoxy resin quality Low viscosity winter Each test item was evaluated.
評価結果
膨れ試験の結果を表２に，ＪＩＳ Ａ６０２４−２００８建築補修用注入エポキシ樹脂の表４ 硬質形エポキシ樹脂の品質 低粘度形冬用の評価結果を表３に示す。
Evaluation results Table 2 shows the results of the swelling test, and Table 4 shows the quality of the hard epoxy resin in Table 4 of the injection epoxy resin for JIS A6024-2008 building repair.
まとめ
実施例及び比較例のエポキシ樹脂は，ＪＩＳ Ａ６０２４−２００８建築補修用注入エポキシ樹脂の表４ 硬質形エポキシ樹脂の品質 低粘度形冬用に規定される規格値を満たしているが，膨れ試験において大きな差異があり，実施例は湿潤状態及び乾燥状態ともに○評価であった。実施例は夏季において膨れは視認されないと評価された。
Summary The epoxy resins of Examples and Comparative Examples satisfy the standard values specified for JIS A6024-2008 Building Injection Injection Epoxy Resin Table 4 Hard Epoxy Resin Low Viscosity Winter, but in the blister test There was a large difference, and in the examples, both wet and dry conditions were evaluated as good. The examples were evaluated as no blisters were visible in summer.
Claims (2)
An injection material for use in an injection material injection method for a concrete structure according to claim 1, comprising liquid bisphenol A type diglycidyl ether, styrenated metaxylenediamine, alicyclic amine, and mercaptan-terminated polysulfide compound. An injection material for a concrete structure characterized by comprising:
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| JP2002121901A (en) * | 2000-10-16 | 2002-04-26 | Alpha Kogyo Kk | Reinforcing/repairing method for concrete structure having cracks and infiltration type adhesive composition for it |
| JP2003002948A (en) * | 2001-06-20 | 2003-01-08 | Toray Ind Inc | Epoxy resin composition for repairing/reinforcing concrete structure and method for repairing/reinforcing using the composition |
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