CN1709832A - Method for preventing stripping of concrete - Google Patents
Method for preventing stripping of concrete Download PDFInfo
- Publication number
- CN1709832A CN1709832A CN 200510077588 CN200510077588A CN1709832A CN 1709832 A CN1709832 A CN 1709832A CN 200510077588 CN200510077588 CN 200510077588 CN 200510077588 A CN200510077588 A CN 200510077588A CN 1709832 A CN1709832 A CN 1709832A
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- Prior art keywords
- concrete
- mentioned
- scaling
- composition
- resin
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- 238000000034 method Methods 0.000 title claims abstract description 61
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- 238000000576 coating method Methods 0.000 claims abstract description 54
- 239000011248 coating agent Substances 0.000 claims abstract description 44
- 229920000768 polyamine Polymers 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 22
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 21
- 238000001035 drying Methods 0.000 claims abstract description 18
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 17
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 17
- 239000011342 resin composition Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 54
- 239000000203 mixture Substances 0.000 claims description 40
- 239000000758 substrate Substances 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 230000008439 repair process Effects 0.000 claims description 14
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- 150000001412 amines Chemical class 0.000 claims description 11
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 11
- 239000002344 surface layer Substances 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 5
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- 125000000524 functional group Chemical group 0.000 description 3
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
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- 150000001298 alcohols Chemical class 0.000 description 2
- 125000002723 alicyclic group Chemical group 0.000 description 2
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- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical class C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
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- 229920002554 vinyl polymer Polymers 0.000 description 2
- KMOUUZVZFBCRAM-OLQVQODUSA-N (3as,7ar)-3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione Chemical compound C1C=CC[C@@H]2C(=O)OC(=O)[C@@H]21 KMOUUZVZFBCRAM-OLQVQODUSA-N 0.000 description 1
- ZWVMLYRJXORSEP-UHFFFAOYSA-N 1,2,6-Hexanetriol Chemical compound OCCCCC(O)CO ZWVMLYRJXORSEP-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- 239000009261 D 400 Substances 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 1
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 1
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 description 1
- 229920000538 Poly[(phenyl isocyanate)-co-formaldehyde] Polymers 0.000 description 1
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- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000001118 alkylidene group Chemical group 0.000 description 1
- BSKDTBSPWVDDQD-UHFFFAOYSA-N benzylbenzene;ethane Chemical compound CC.C=1C=CC=CC=1CC1=CC=CC=C1 BSKDTBSPWVDDQD-UHFFFAOYSA-N 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 1
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- 239000004927 clay Substances 0.000 description 1
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- FOTKYAAJKYLFFN-UHFFFAOYSA-N decane-1,10-diol Chemical compound OCCCCCCCCCCO FOTKYAAJKYLFFN-UHFFFAOYSA-N 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
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- 239000011737 fluorine Substances 0.000 description 1
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- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- FHKSXSQHXQEMOK-UHFFFAOYSA-N hexane-1,2-diol Chemical compound CCCCC(O)CO FHKSXSQHXQEMOK-UHFFFAOYSA-N 0.000 description 1
- 229940097275 indigo Drugs 0.000 description 1
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
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- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
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- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Bridges Or Land Bridges (AREA)
- Lining And Supports For Tunnels (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a method for preventing peeling-off of concrete and a concrete repairing method for easily finding and repairing parts needed to be repaired. The method for preventing peeling-off of concrete is excellent in coating workability by a trowel or a paddle because of sufficient viscosity is obtained immediately after concrete are mixed. The peeling-off of a concrete block can be prevented by using a resin composition having a touch-drying time within several hours without using a reinforcing material. The method for preventing the peeling-off of concrete includes a process for forming a high strength resin film by applying a resin composition to a concrete surface. The resin composition is obtained by mixing a component A containing a polyol and an aliphatic polyamine and a component B containing a polyisocyanate.
Description
Technical field
The present invention relates to prevent the method and the concrete repair process of concrete scaling.
Background technology
Concrete is owing to meeting deteriorations such as salt damage, neutralisation, alkali-aggregate reaction and freeze injury are known.The concrete intensity that is considered to be caused by the carrying out degree of this deterioration reduces and the problem such as peel off of concrete blocks, remarkable day by day in recent years, particularly from the accident of peeling off of the concrete blocks of concrete constructions such as overpass and el, taking this as an opportunity seeks it and prevents countermeasure.
As preventing the concrete blocks method for exfoliating, known have in the outside wall surface of concrete construction in Resins, epoxy laminated film therebetween woven fiber glass and the polyvinyl 3D grid lining method (for example with reference to non-patent literature 1 and 2) as strongthener is arranged.But, these methods need be taken time and energy and be cut off woven fiber glass and polyvinyl 3D grid strongthener matches with the shape with concrete construction, and exist concavo-convex and angle part at concrete construction and be difficult to make its problem of driving fit in the such construction of concrete surface fully for identical its shape during crooked strongthener.And then, need many laminations operation to sandwich above-mentioned strongthener, long in time limit, and the loss economically of accompanying with it also is a problem.
In order to address these problems, developing the technology of not using strongthener in recent years.For example urethane resin by using special apparatus for coating spraying expediting setting type or urea resin to be forming liner, thereby form the technology of high-intensity resin film at concrete surface with the short duration.But the problem that stays is to need special apparatus for coating and owing to being need disperse when the being coated with complete sfgd. etc. of dust of spraying coating process.
On the other hand, studying the method that prevents concrete scaling, it is by trowel and two high liquid reaction-curable urethane resins of scraper coating touch dry on the outside wall surface of such concrete construction.Soon the be coated with operation viscosity of resin after this resin can be guaranteed to mix according to the use level of packing material sometimes.But; because the physical properties of the resin molding that obtains is low; thereby to guarantee mixedly to be coated with operation viscosity simultaneously, guarantee to utilize the time fully, guarantee to be coated with the touch dry of back in a few hours and the physical properties of guaranteeing the anti-desired film of exfoliation material that the physical properties of promptly taking into account coating operation, rapidly-curable and film is unusual difficulty.
Firm " preventing the technology of concrete scaling ", [online] under the grand good fortune in [non-patent literature 1] lining, the palace, in October, 2002 big Japanese coating the 10-15 page or leaf of " DNT coating skill newspaper ", [retrieval on May 28th, 2003], internet＜network address: http://www.dnt.co.jp/japanese/imagepdf/giho2-10.pdf 〉
" preventing the technology α V network system that the concrete sheet peels off ", [online], on April 15th, 2002 of [non-patent literature 2] ア Le Off ア Industrial Co., Ltd, [retrieval on May 28th, 2003], internet＜network address: http://www.alpha-kogyo.co.jp/methods/alphav.htm 〉
Summary of the invention
The purpose of this invention is to provide the method that prevents concrete scaling and can easily find and repair the concrete repair process that needs mend, the above-mentioned method of concrete scaling that prevents is owing to just given sufficient viscosity soon after mixing, thereby the operation that utilizes trowel and scraper to be coated with is superior, and by use drying time of finger-touching a few hours with interior resin combination, even do not use strongthener also can prevent peeling off of concrete blocks.
The present invention relates to prevent the method for concrete scaling, it is to comprise the method that prevents concrete scaling that concrete surface coating resin composition is formed the operation (1) of high-intensity resin film, it is characterized in that, above-mentioned resin combination is that composition A and composition B mix and the material of formation, mentioned component A contains polyvalent alcohol and aliphatic polyamine, and mentioned component B contains polyisocyanates; Soon viscosity is more than or equal to 15Pas after the above-mentioned mixing of above-mentioned resin combination, viscosity after above-mentioned mixing was through 10 minutes is smaller or equal to 1000Pas, and be that drying time of finger-touching under 20 ℃ the environment is 1 hour～4 hours in temperature, above-mentioned high-intensity resin film temperature be 20 ℃, humidity be tensile strength under 65% the environment for more than or equal to 10MPa, and elongation is more than or equal to 30%.At this, the normal ratio of the above-mentioned relatively hydroxyl groups of amine equivalent that for example is included in the above-mentioned aliphatic polyamine among the mentioned component A is preferably 5%～20%.In addition, above-mentioned aliphatic polyamine preferably amine equivalent be 80～300 have the polyamine of at least 2 aliphatics amino at intramolecularly.
In addition, above-mentioned concrete surface can be coated with basecoat material or substrate treatment material and basecoat material, and above-mentioned substrate treatment material can be a resin slurry.
And then the method that prevents concrete scaling of the present invention can comprise the operation (2) of coated face coating after above-mentioned operation (1).
In addition, the present invention relates to concrete repair process, it is characterized in that, the high-intensity resin film that forms by the above-mentioned method that prevents concrete scaling or surface layer are filmed produces the part of displacement, carries out concrete repair.
And then, the present invention relates to resin combination, it is characterized in that, be used to the above-mentioned method that prevents concrete scaling.
The method that prevents concrete scaling of the present invention has just been given sufficient viscosity after mixing certainly soon, even be a kind of method that also can suppress to produce sagging fully of using at once.The reason that suppresses sagging like this is also unclear, but can infer, its reason is by using by the composition A of the polyamine that contains polyvalent alcohol and ad hoc structure and containing the resin combination that the composition B of polyisocyanates mixes, the urea that reacts very fast in reactive urethane (urethane reaction) system more slowly in reaction reacts (urea reaction), consequently produce structural viscosity, the viscosity of resin combination uprises at once.
The present invention comprises the method that prevents concrete scaling that concrete surface coating resin composition is formed the operation (1) of high-intensity resin film.Be used for the high-intensity resin film of the method for concrete scaling that prevents of the present invention and be characterised in that, temperature be 20 ℃, humidity be tensile strength under 65% the environment for more than or equal to 10MPa, and elongation is more than or equal to 30%.When not enough 10MPa of above-mentioned tensile strength or above-mentioned elongation less than 30%, the high-intensity resin film that then obtains can not tolerate follows concrete deterioration and peeling off and displacement of producing, and breaks easily.Preferred above-mentioned tensile strength is more than or equal to 15MPa, and perhaps above-mentioned elongation is more than or equal to 45%.Above-mentioned tensile strength and elongation can be tried to achieve by the tension test instrument.Can enumerate for example Autograph AG-100KNE (society of Shimadzu Seisakusho Ltd. system) etc. as such tension test instrument.
In addition, the tensile strength among the present invention, elongation more particularly are following mensuration and the value that obtains.On polypropylene board, sprawl the coating resin composition, make thickness be about 1mm, under 20 ℃ environment, solidified 7 days and making physical properties evaluation plate, according to JIS K 6301-3 the physical properties that obtains is estimated plate and cut into dumbbell shape No. 2, make sample with trowel.Using the tension test instrument is that 20 ℃, humidity are with extension speed 100mm/ minute the sample of making to be carried out tension test under 65% the environment in temperature, thereby obtains the measured value of tensile strength (MPa) and elongation (%).
The resin combination that is used to form above-mentioned high-intensity resin film is that the composition B that contains the composition A of polyvalent alcohol and aliphatic polyamine and contain polyisocyanates mixes and forms.Above-mentioned polyvalent alcohol, above-mentioned aliphatic polyamine and polyisocyanates just do not have special qualification so long as satisfy the material of above-mentioned tensile strength and elongation.It is generally acknowledged the mutual close association of tensile strength and elongation.Then elongation was little when tensile strength was big usually, and described resin molding is hard, enbrittles.On the contrary, then tensile strength was little when elongation was big, and described resin molding softness has snappiness.Above-mentioned tensile strength and elongation can be regulated by the solidified nature of resin combination and the molecular weight of the crosslink part of the resin molding that obtains etc.That is, if improve above-mentioned solidified nature, then usually tensile strength can become greatly, and elongation can diminish.On the other hand, if increase the molecular weight of above-mentioned crosslink part, then usually elongation can become greatly, and tensile strength can diminish.Consider based on this, can carry out the change of the constituent of above-mentioned resin combination.
Do not have special qualification as the such polyvalent alcohol that is included among the mentioned component A, can enumerate the alcohol that for example has the hydroxyl more than 2 or 2 at 1 intramolecularly.The molecular weight of above-mentioned polyvalent alcohol is preferably 300～10000.And above-mentioned hydroxyl groups equivalent is preferably 100～5000.During lower value that above-mentioned molecular weight and hydroxyl equivalent are not enough, the elongation of the resin molding that then obtains might reduce; When surpassing higher limit, then tensile strength might reduce.
Can enumerate polyether glycol or polyester polyol particularly as above-mentioned polyvalent alcohol.Can enumerate for example ethylene glycol, propylene glycol, Diethylene Glycol, triethylene glycol, dipropylene glycol, three methylene glycols, 1 as above-mentioned polyether glycol, 3-butyleneglycol, 1,4-butyleneglycol, 1,5-pentanediol, 1,2-hexylene glycol, 1,10-decanediol, 1,2-cyclohexane diol, glycerol, 1,2,6-hexanetriol, 1,1,1-trimethylolethane, 1,1, on the polyvalent alcohols such as 1-TriMethylolPropane(TMP), tetramethylolmethane in the epoxide such as addition polymerization oxyethane, propylene oxide, butylene oxide ring, tetrahydrofuran (THF) a kind, more than 2 kinds or 2 kinds and the material that obtains.Can enumerate polycarboxylic acid reactions such as making above-mentioned polyvalent alcohol and succsinic acid, pentanedioic acid and hexanodioic acid or their dimethyl ester, sebacic acid, Tetra hydro Phthalic anhydride and the material that forms as above-mentioned polyester polyol.Also can enumerate and make the polyester that obtains with the polyvalent alcohol polymerization as the cyclic ester of lactone such as caprolactone etc.These polyvalent alcohols can use a kind or mix more than 2 kinds or 2 kinds and to use separately.
In addition, the such aliphatic polyamine that is included among the mentioned component A does not have special qualification, can enumerate the material that has the amino more than 2 or 2 at 1 intramolecularly in the aliphatics mode.Be included in the aliphatic polyamine that has aromatic nucleus in the molecule in the above-mentioned aliphatic polyamine.The weight-average molecular weight of above-mentioned aliphatic polyamine for example is 160～1000.And the amine equivalent of above-mentioned aliphatic polyamine is preferably 80～300.When above-mentioned amine equivalent exceeded above-mentioned scope, then the flow of above-mentioned resin combination and coating operation may reduce.
As above-mentioned aliphatic polyamine, can enumerate polyoxy alkylidene polyamine particularly by using the hydrogenation-dehydrogenation catalyzer that methods such as the terminal hydroxyl of the polyoxy sub alkyl polylol with at least 2 hydroxyls and ammonia react are obtained.Soon the angle of viscosity considers that above-mentioned aliphatic polyamine is preferably aliphatie diamine after mix.Can enumerate for example ジ エ Off ア one ミ Application D-230 (サ Application テ Network ノ chemistry society system, amine equivalent about 120), ジ エ Off ア one ミ Application D-400 (サ Application テ Network ノ chemistry society system, amine equivalent about 200) etc. as the commodity commercially available with such aliphatie diamine.
As being included in the polyvalent alcohol among the mentioned component A and the preferably combination of aliphatic polyamine, consider the combination that specifically can enumerate polyether glycol and aliphatie diamine from the angle of the viscosity of the performance of gained high-strength membrane and resin combination.After composition A and composition B mixing, can give viscosity more fully soon like this.
In mentioned component A, the normal ratio of the above-mentioned relatively hydroxyl groups of amine equivalent that is included in the above-mentioned aliphatic polyamine among the mentioned component A is preferably 5%～20%.During less than 5%, soon viscosity is low after then mixing, and is easy to generate sagging, and the coating operation may reduce.Surpass at 20% o'clock, soon viscosity height after then mixing, the coating difficulty, it is short to be coated with the activity duration, and the coating operation may reduce.Aforementioned proportion more preferably 7%～15%.
Mentioned component A can contain pigment in the scope of the performance that does not reduce gained high-intensity resin film.
There is not special qualification as above-mentioned pigment, can enumerate mineral dyes such as chrome yellow, Zh 1, ferric oxide, carbon black, titanium dioxide, mica particularly, painted pigment such as pigment dyestuff such as azo chelating class pigment, insoluble azo class pigment, condensation azo class pigment, phthalocyanine pigment, indigo pigment, perylene quinones pigment, perylene class pigment, dioxane pigment, quinoline a word used for translation ketone pigment, isoindoline ketone pigment, metal complex pigment; And extender pigment such as lime carbonate, settleability barium sulfate, clay, talcum.
Do not have special qualification as the polyisocyanates that is included among the mentioned component B, can enumerate known polyisocyanates etc., can enumerate aromatic polyisocyanate compound, aliphatic polyisocyanate compound, alicyclic polyisocyanates compound etc. particularly.
As above-mentioned aromatic polyisocyanate compound, for example can enumerate the liquid diphenylmethane methylmethane vulcabond that obtains by the carbodiimide modification or the part prepolymer of diphenylmethanediisocyanate, 2,4-tolylene diisocyanate (2,4-TDI), ditan-4,4 '-vulcabond (MDI), ditan-2,4 '-vulcabond, eylylene diisocyanate (XDI), rough tolylene diisocyanate, polymethylene polyphenyl isocyanate and their carbodiimide modifier, biuretized modifier, pre-polymerization materialization modifier etc.Wherein, consider preferred ditan-4,4 '-vulcabond, ditan-2,4 '-vulcabond or their prepolymer or modifier from the angle of solidified nature.
As above-mentioned aliphatic polyisocyanate compound and alicyclic polyisocyanates compound, can enumerate for example dicyclohexyl methyl hydride-4,4 '-vulcabond, isophorone diisocyanate, hexamethylene diisocyanate and their isocyanuric acid esterification modifier, carbodiimide modifier, pre-polymerization materialization modifier etc.
Can enumerate for example ミ リ オ ネ one ト MLT (Japanese polyurethane industry society system), ミ リ オ ネ one ト MTL-S (Japanese polyurethane industry society system), コ ロ ネ one ト MX (Japanese polyurethane industry society system) etc. as the commodity commercially available with above-mentioned polyisocyanates.
Consider that from the angle of reduction of erection time above-mentioned resin combination is 1 hour～4 hours at 20 ℃ drying time of finger-touching.On resin molding, can not leave the time of finger mark when in addition, drying time of finger-touching is meant resin molding after the finger touch coating.Above-mentioned drying time of finger-touching is surveyed periodic temperature does not have special qualification, the temperature in the time of can be for operation separately.Employed resin combination in the method that prevents concrete scaling of the present invention, even have above-mentioned drying time of finger-touching 10 ℃～30 ℃ temperature range, the temperature during corresponding operation is not found the reduction of flow and coating operation yet.
In the method that prevents concrete scaling of the present invention, carrying out above-mentioned operation (1) before, mixing mentioned component A and mentioned component B and obtain above-mentioned resin combination.Soon the viscosity of resin combination is more than or equal to 15Pas after the above-mentioned mixing.During the not enough 15Pas of soon viscosity, the flow when then being coated with is low after the above-mentioned mixing.Soon viscosity is preferably more than and equals 18Pas after the above-mentioned mixing, more preferably more than or equal to 30Pas.
In addition, the viscosity of the resin combination after above-mentioned mixing was through 10 minutes is smaller or equal to 1000Pas.When the viscosity after above-mentioned mixing was through 10 minutes surpasses 1000Pas, then be coated with operation and become difficult.Viscosity after above-mentioned mixing was through 10 minutes is preferably smaller or equal to 900Pas, more preferably smaller or equal to 500Pas.In this manual, " after the mixing soon " and " mix certainly through 10 minutes after " is defined as respectively, under the condition of 1500rpm, mentioned component A and mentioned component B are mixed stirring 1 minute with desk-top decollator, mix after 1 minute that stirs after finishing and after 11 minutes.
Measuring method as above-mentioned viscosity does not have special qualification, can enumerate the method for viscometers well known to those skilled in the art such as use cone-plate type rotational viscosimeter etc.It is under 0.5rpm, 25 ℃ the condition determination at 25 ℃, 3 degree cone angles, speed of rotation that the viscosity of the resin combination among the present invention more specifically is to use cone-plate type rotational viscosimeter, is determined at and mixes the viscosity that stirs resin combination after 1 minute, after 11 minutes and the value that obtains.
The proportioning of mentioned component A and mentioned component B is preferably hydroxyl equivalent/isocyanurate equivalent=1/1 to 1/1.5.By making proportioning in above-mentioned scope, can obtain having the resin molding of superior physical properties.More preferably 1/1.1 to 1/1.3.
The method that prevents concrete scaling of the present invention is to comprise concrete surface is coated with above-mentioned resin combination and forms the method for the operation (1) of above-mentioned high-intensity resin film.Do not have special qualification as above-mentioned concrete, for example can enumerate the concrete well known to those skilled in the art of building and being solidified to form by the material after water, cement, fine aggregate and coarse aggregate is mixing.The method of concrete scaling that prevents of the present invention preferably is applicable to the above-mentioned concrete part of peeling off the overhead part that is considered to high road of possibility of accident occurrence and circuit, the outside wall surface top of buildings etc. because of generation.As above-mentioned coating process can enumerate utilize trowel and scraper and carry out sprawl coating etc.
The thickness or the glue spread of the resin molding during above-mentioned coating do not have special qualification, can set according to applied part is suitable.In order to bring into play effect of the present invention fully, above-mentioned thick resin film is preferably set to 0.75mm～2mm.
Be generally more than or equal to 16 hours the set time as till obtaining sufficient membrane property up to the above-mentioned resin combination after the above-mentioned coating, is to be 16 hours under 20 ℃ the environment in temperature for example.
In the method that prevents concrete scaling of the present invention, the preferred applied basecoat material of above-mentioned concrete surface.By at above-mentioned concrete surface coating basecoat material, can improve the tack between above-mentioned concrete surface and the above-mentioned high-intensity resin film.The material superior can be enumerated as above-mentioned basecoat material, Off ガ one De R-M priming paint (Japanese ペ イ Application ト society system moisture-curable urethane resene priming paint), Off ガ one De R-W priming paint (Japanese ペ イ Application ト society preparing aqueous epoxy resins class priming paint) etc. can be enumerated as commercially available commodity with the tack of above-mentioned concrete surface.
Coating process as above-mentioned basecoat material does not have special qualification, can enumerate for example brushing, roller coat, spraying etc.In addition, the thickness or the glue spread of the basecoat material during above-mentioned coating and do not have special qualification time of drying can be according to the suitable settings such as kind of above-mentioned basecoat material.For example, when using Off ガ one De R-M priming paint, adopting roller coat can set glue spread for is 0.15kg/m
2, time of drying of 20 ℃ is 30 minutes.
In addition, in the method that prevents concrete scaling of the present invention, above-mentioned concrete surface also can applied substrate treatment material and basecoat material.By handling material and basecoat material at above-mentioned concrete surface coated substrates, can adjust the concavo-convex of above-mentioned concrete surface, further improve the tack between above-mentioned concrete surface and the above-mentioned high-intensity resin film.And,, can also improve stripping strength by the concrete surface coated substrates is handled material.Can enumerate the material superior as above-mentioned substrate treatment material, specifically can enumerate cement, contain the resin slurry of aggregate and resin etc. etc. with the tack of above-mentioned concrete surface and basecoat material.Can enumerate Off ガ one De E-W filler (Japanese ペ イ Application ト society system epoxy-based polymer sand-cement slurry substrate treatment material) etc. as the commodity commercially available with such substrate treatment material.
Coating process as above-mentioned substrate treatment material does not have special qualification, can enumerate for example same with the coating process of above-mentioned resin combination method.In addition, the thickness of the substrate treatment material during as above-mentioned coating or glue spread and do not have special qualification time of drying can be according to the suitable settings such as kind of above-mentioned substrate treatment material.For example, when using Off ガ one De E-W filler, sprawl coating with trowel, can set glue spread for is 1.0kg/m
2, time of drying of 20 ℃ is 18 hours.
As coating process, thickness or the glue spread of above-mentioned basecoat material and there is not special qualification time of drying, can enumerate and describe in above-mentioned basecoat material part.
Thus, can prevent concrete peeling off by concrete surface being formed above-mentioned high-intensity resin film.
And then the method for concrete scaling that prevents of the present invention can comprise the coated face coating and form the operation (2) that surface layer is filmed after above-mentioned operation (1).By being coated with above-mentioned investment precoat, can prevent UV degradation, and improve view.Do not have special qualification as above-mentioned investment precoat, can enumerate for example coating well known to those skilled in the art such as crylic acid resin coating, urethane resins surface coating and fluorine resin class coating.Wherein, in order to be adapted to concrete strain etc., the preferred rubber-like coating that is referred to as soft type that uses.For example can enumerate Off ガ one De UD investment precoat (urethane resins surface investment precoat, Japanese ペ イ Application ト society system) etc. as the commodity commercially available with such investment precoat.
Coating process as above-mentioned investment precoat does not have special qualification, can enumerate for example same with the coating process of above-mentioned basecoat material method.In addition, the thickness of investment precoat or glue spread and time of drying do not have special qualification during as above-mentioned coating, can be according to the suitable settings such as kind of above-mentioned investment precoat.For example, when using Off ガ one De UD investment precoat, adopt roller coat, can set glue spread for is 0.12kg/m
2, time of drying of 20 ℃ is 18 hours.
Concrete repair process of the present invention is characterised in that, films at the high-intensity resin film that forms by the above-mentioned method that prevents concrete scaling or the surface layer that further forms thereon the displacement part takes place, and carries out concrete repair.
The generation of above-mentioned displacement is by confirming with above-mentioned high-intensity resin film of visual inspection or surface layer film coated surface.At this, be the variable quantity that points to perpendicular to the direction of coated surface as displacement, if for example variable quantity is 10mm, then be judged as the displacement that 10mm takes place.The above-mentioned concrete repair that the generation displacement is partly carried out waits method well known to those skilled in the art to carry out by the following method, this method be confirmed to be on above-mentioned resin molding or above-mentioned surface layer are filmed displacement part resin molding or be coated with membranectomy after, repair with repairing mortar.
In addition, above-mentioned repairing is preferably carried out during smaller or equal to 30mm in above-mentioned displacement.When surpassing 30mm, then concrete degradation is too high, strengthens the difficulty that may become by repairing.
Concrete by above-mentioned concrete repair process is repaired has preferably carried out after the necessary processing its surface, carries out the above-mentioned method that prevents concrete scaling once more.
The method that prevents concrete scaling of the present invention is owing to be to use the composition A of the polyamine that contains polyvalent alcohol and ad hoc structure and contain the resin combination that the composition B of polyisocyanates mixes and concrete surface is formed the method for the high-intensity resin film with the specific physical property values of filming, thereby mix just height of initial stage viscosity certainly, can not produce sagging even use at once yet.It is considered to because, at the reaction very fast urea reaction that reacts in the urethane reaction system more slowly, thus the generation structural viscosity, the viscosity of resin combination uprises at once.
In addition, of the present inventionly prevent that its curing reaction of resin combination that uses in the method for concrete scaling is fast, the use woven fiber glass more in the past and the method for 3D grid are also easy, and can carry out the construction of casual labourer's phase.
And then, concrete repair process of the present invention is owing to be to film at the high-intensity resin film that forms by the above-mentioned method that prevents concrete scaling or the surface layer that forms thereon the displacement part takes place, carry out the method for concrete repair, thereby can check operation and repairing work simply.
Embodiment
Below enumerate specific embodiment and explain the present invention, but the present invention is not limited to following embodiment.In addition, " part " below is meant " mass parts ".
The manufacturing of Production Example 1 composition A-1
To 97 parts of ミ ゼ ロ Application B-500 grey paint liquid (coatings chemistry society of Mitsui Metal Co., Ltd. systems, this is coated with feed liquid, and to comprise 54 parts of hydroxyl equivalents be that 625g/eq and average functional group number are 2.7 polyhydroxy reactant, 40 parts of pigment and 3 parts of additives that formed by titanium dioxide, silicon-dioxide, mica and carbon black, solids component is 100%) in mix 1 part of ジ エ Off ア one ミ Application D-230 (サ Application テ Network ノ chemistry society system aliphatie diamine, amine equivalent are that 126g/eq and average functional group number are 2.0, effective constituent be 100%), fully stir, thereby obtain composition A-1.
The manufacturing of Production Example 2 compositions A-2～composition A-3
Except cooperation, mix beyond ミ ゼ ロ Application B-500 grey paint liquid and the ジ エ Off ア one ミ Application D-230 and Production Example 1 similarly obtains composition A-2～composition A-3 according to table 1.
The manufacturing of Production Example 3 composition A-4
Except cooperation, mix beyond ミ ゼ ロ Application B-500 grey paint liquid, ジ エ Off ア one ミ Application D-230 and the titanium dioxide and Production Example 1 similarly obtains composition A-4 according to table 1.
Table 1
| Production Example (composition) | ||||
| ??1 ??(A-1) | ??2 ??(A-2) | ??3 ??(A-3) | ??4 ??(A-4) | |
| ミ ゼ ロ Application B-500 grey paint liquid (part) | ??97.0 | ??97.0 | ??97.0 | ??97.0 |
| ジ エ Off ア one ミ Application D-230 (part) | ??1.0 | ??3.0 | ??- | ??- |
| Titanium dioxide (part) | ??0.0 | ??0.0 | ??0.0 | ??20.0 |
| The ratio of the relative hydroxyl equivalent of amine equivalent (%) | ??5 | ??15 | ??- | ??- |
Embodiment 1
Use desk-top decollator under the condition of 1500rpm with the composition A-1 that obtains in 98 parts of Production Examples 1 and 33 parts of ミ ゼ ロ Application A-5000 solidifying agent (coatings chemistry society of Mitsui Metal Co., Ltd. system polyisocyanates, isocyanate group equivalent are 135, functional group's number be 2.7 and solids component be 100%) mix 1 minute, thereby obtain resin combination 1.Sprawl this resin combination 1 of coating on the asbestos plate with scraper after, be determined at 20 ℃ drying time of finger-touching, the result is 2 hours.
Sprawl the resin combination 1 that coating obtains with trowel on polypropylene board, make thickness be about 1mm, health is 7 days under 20 ℃ environment, estimates plate thereby make physical properties.
In addition, with the glue spread 1.4kg/m with the resin combination 1 usefulness trowel that obtains
2Be coated on the base material test body of making according to following main points 1 and U-shaped lid test body health 3 hours.And then, with the glue spread 0.12kg/m with brush
2Coating Off ガ one De UD investment precoat (Japanese ペ イ Application ト society system polyurethane type resin investment precoat), health is 7 days under 20 ℃ environment, thereby makes evaluation test body 1 and estimate the U-shaped lid.
[the test system is made main points]
With the collar plate shape sand mill to as the mortar base material 1,2 of base material (JIS mortar, 70mm * 150mm * 20mm) and among the JIS A 5334 surface (even surface) of the U-shaped lid of regulation grind.Above-mentioned JIS mortar and U-shaped covered dipping took out after 24 hours in 20 ℃ water from water, remove the moisture on surface with rag.
Surface to the base material 1,2 that obtains and U-shaped lid is 1.0kg/m with the glue spread with trowel
2Sprawl coating Off ガ one De E-W filler (Japanese ペ イ Application ト society system contains the epoxy resin substrate treatment material of sand-cement slurry), health is 16 hours under 20 ℃ environment.And then with the glue spread 0.15kg/m with brush
2Coating Off ガ one De R-M priming paint (Japanese ペ イ Application ト society system moisture-curable ammonia ester resene priming paint), health is 2 hours under 20 ℃ environment, thereby obtains base material test body 1,2 and U-shaped lid test body.
Embodiment 2 and comparative example 1,2
Except cooperation according to table 2, mix beyond composition A-2～4 and ミ ゼ ロ Application A-5000 solidifying agent that obtain in the Production Example 2～4, similarly obtain resin combination 2～4 with embodiment 1, then, further make physical properties and estimate plate, evaluation test body 1 and estimate the U-shaped lid.In addition, drying time of finger-touching is 2 hours.
In addition, about embodiment 2, further use mortar base material 2 (base material that forms with an end 50mm of Masking strip covering mortar base material 1 short brink) to replace mortar base material 1, make main points with the test system of embodiment 1 and similarly obtain base material test body 2, at this base material test body 2, with with the same method coating resin composition 2 of making method of the evaluation test body 1 of embodiment 1, make evaluation test body 2.
Table 2
| Resin combination | |||||
| ??1 | ??2 | ??3 | ??4 | ||
| Composition A | A-1 (part) | ??98.0 | ??- | ??- | ??- |
| A-2 (part) | ??- | ??100.0 | ??- | ??- | |
| A-3 (part) | ??- | ??- | ??97.0 | ??- | |
| A-4 (part) | ??- | ??- | ??- | ??114.0 | |
| Composition B | ミ ゼ ロ Application A-5000 solidifying agent (part) | ??33.0 | ??33.0 | ??33.0 | ??33.0 |
Embodiment 3
Except replace Off ガ one De R-M priming paint in the making of test body is 0.04kg/m with the glue spread
2Brush Off ガ one De R-W priming paint (Japanese ペ イ Application ト society preparing aqueous epoxy resins class priming paint) in addition and embodiment 2 similarly make evaluation test body 1, evaluation test body 2 and estimate the U-shaped lid.
Embodiment 4
Except in the making of test body, not being coated with the Off ガ one De E-W filler and embodiment 2 similarly makes evaluation test body 1, evaluation test body 2 and estimates the U-shaped lid.
Embodiment 5
Use the Off ガ one De R-W priming paint except in the making of test body, replacing Off ガ one De R-M priming paint and embodiment 4 similarly makes evaluation test body 1, evaluation test body 2 and estimates the U-shaped lid.
Evaluation test
Carry out following evaluation test at the resin combination 1～4 that obtains and each physical properties evaluation plate, evaluation test body 1, evaluation test body 2 and evaluation U-shaped lid.The evaluation result that obtains is shown in Table 3.
(1) viscosity
Use EH type viscometer (ト キ メ Star Network society system cone-plate type rotational viscosimeter, condition determination are that 3 degree cone angles, speed of rotation are 0.5rpm, 25 ℃) to measure to mix to stir and finish after 1 minute and the viscosity after 11 minutes at the resin combination that obtains 1～4.
(2) coating operation
(a) flow
The JIS mortar that 1～4 pair of the resin combination that utilization obtains stands vertically is the area that 5mm is coated with 10mm * 100mm with thickness, estimates each resin combination and whether produces sagging.
(b) can be coated with the activity duration
With scraper asbestos plate is sprawled the resin combination 1～4 that coating obtains, measure by sprawling the time that operation becomes difficulty.
(3) resin molding physical properties
According to JIS K 6301-3 each physical properties that obtains in embodiment 1,2 and the comparative example 1,2 is estimated plate and cut into dumbbell shape No. 2, after making sample, be to implement tension test with テ Application シ ロ Application UTM-10T (Japan ボ one Le De ウ イ Application society system tension test instrument, extension speed: 100mm/ minute) under 65% the environment at 20 ℃, humidity, measure tensile strength (MPa) and elongation (%).
(4) cohesiveness
(a) cohesive force
At each the evaluation test body 1 that obtains in embodiment 2 and 3～5, be to build according to 69165.6 usefulness of JIS A under 65% the environment to grind formula cohesion test instrument and measure cohesive force (MPa) at 20 ℃, humidity.
(b) stripping strength
At each the evaluation test body 2 that obtains in embodiment 2 and 3～5, be that テ Application シ ロ Application UTM-10T (extension speed: 100mm/ minute) measures 90 degree stripping strengths (kg/mm) under 65% the environment at 20 ℃, humidity.
(5) punching test evaluation
According to Japanese road community's experimental study institute standard " the adhesive punching press shearing test method of continuous fibre sheet " the U-shaped lid of respectively estimating that obtains in embodiment 1～5 and the comparative example 1,2 is measured loading-displacement and dissection scope.
Table 3
| Embodiment | Comparative example | |||||||
| ??1 | ??2 | ??3 | ??4 | ??5 | ??1 | ??2 | ||
| Resin combination | ??1 | ??2 | ??2 | ??2 | ??2 | ??3 | ??4 | |
| Viscosity | After 1 minute [Pas] | ??18 | ??58 | ??58 | ??58 | ??58 | ??5 | ??15 |
| After 11 minutes [Pas] | ??300 | ??350 | ??350 | ??350 | ??350 | ??240 | ??460 | |
| The coating operation | Soon produce sagging after the mixing | Do not have | Do not have | Do not have | Do not have | Do not have | Have | Do not have |
| Can be coated with the activity duration [minute] | ??20 | ??20 | ??20 | ??20 | ??20 | ??20 | ??20 | |
| The resin molding physical properties | Tensile strength [MPa] | ??15.3 | ??15.8 | ??15.8 | ??15.8 | ??15.8 | ??15.2 | ??18.1 |
| Elongation [%] | ??60 | ??65 | ??65 | ??65 | ??65 | ??63 | ??12 | |
| Cohesiveness | Build and grind cohesive force [MPa] | ??- | ??＞2.0 | ??＞2.0 | ??＞2.0 | ??＞2.0 | ??- | ??- |
| Stripping strength [kg/mm] | ??- | ??0.35 | ??0.35 | ??0.03 | ??0.03 | ??- | ??- | |
| JH " punching press shearing test " | Maximum loading [kN] 1) | ??1.70 | ??1.73 | ??1.73 | ??1.51 | ??1.58 | ??1.70 | ??-3) |
| Peel off shape 2) | Circle | Circle | Circle | Oval | Oval | Circle | ||
1) in maximum loading more than or equal to 10mm displacement place
2) in the shape of peeling off of 30mm displacement place
3) on resin molding, produce be full of cracks, thereby do not have data until 10mm
Can know from the result of table 3 and to know, soon viscosity height after the method that prevents concrete scaling of the present invention is mixed, even coating can not produce sagging yet at once, drying time of finger-touching is short, and the film physical properties that obtains cohesiveness also good and base material also superior (embodiment 1～5).Be coated with at substrate surface under the situation of substrate treatment material, separability improves, and the shape of peeling off that obtains by the punching press shearing test also is circular (embodiment 4 and 5).And set time is also short.But if viscosity after mixing soon is low, coating at once soon can produce sagging (comparative example 1) after then mixing; If the film physical properties is insufficient, the resin molding that then obtains does not meet experimental study institute of Japanese road community standard.
The possibility of utilizing on the industry
The method that prevents concrete scaling of the present invention is useful for the concrete constructions such as structure of overpass and overhead railway etc.
Claims (9)
1, a kind of method that prevents concrete scaling, it comprises the operation (1) that concrete surface coating resin composition is formed the high-intensity resin film, it is characterized in that, described resin combination is that composition A and composition B mix and the material of formation, described composition A contains polyvalent alcohol and aliphatic polyamine, and described composition B contains polyisocyanates; Soon viscosity is more than or equal to 15Pas after the described mixing of described resin combination, and the viscosity after described mixing was through 10 minutes is smaller or equal to 1000Pas, and is that drying time of finger-touching under 20 ℃ the environment is 1 hour～4 hours in temperature; Described high-intensity resin film temperature be 20 ℃, humidity be tensile strength under 65% the environment for more than or equal to 10MPa, and elongation is more than or equal to 30%.
2, the method that prevents concrete scaling according to claim 1, wherein, the normal ratio of the described relatively hydroxyl groups of amine equivalent that is included in the described aliphatic polyamine among the described composition A is 5%～20%.
3, according to claim 1 or the 2 described methods that prevent concrete scaling, wherein, described aliphatic polyamine be amine equivalent be 80～300 have the polyamine of at least 2 aliphatics amino at intramolecularly.
4, according to claim 1, the 2 or 3 described methods that prevent concrete scaling, wherein, described concrete surface is coated with basecoat material.
5, according to claim 1, the 2 or 3 described methods that prevent concrete scaling, wherein, described concrete surface is coated with substrate treatment material and basecoat material.
6, the method that prevents concrete scaling according to claim 5, wherein, described substrate treatment material is a resin slurry.
7,, wherein, after described step (1), comprise the operation (2) of coated face coating according to claim 1,2,3,4, the 5 or 6 described methods that prevent concrete scaling.
8, a kind of concrete repair process is characterized in that, the high-intensity resin film that forms by claim 1,2,3,4,5, the 6 or 7 described methods that prevent concrete scaling or surface layer are filmed produces the part of displacement, carries out concrete repair.
9, a kind of resin combination is characterized in that, described resin combination is used to claim 1,2,3,4,5, the 6 or 7 described methods that prevent concrete scaling.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004181363A JP4780938B2 (en) | 2004-06-18 | 2004-06-18 | Concrete peeling prevention method |
| JP2004181363 | 2004-06-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1709832A true CN1709832A (en) | 2005-12-21 |
| CN100475743C CN100475743C (en) | 2009-04-08 |
Family
ID=35706128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100775881A Expired - Fee Related CN100475743C (en) | 2004-06-18 | 2005-06-17 | Method for preventing stripping of concrete |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4780938B2 (en) |
| CN (1) | CN100475743C (en) |
| HK (1) | HK1083827A1 (en) |
| SG (1) | SG118388A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5680821B2 (en) * | 2008-12-18 | 2015-03-04 | アイカ工業株式会社 | Concrete piece peeling prevention resin composition and its construction method |
| JP5328683B2 (en) * | 2010-01-20 | 2013-10-30 | 日鉄住金防蝕株式会社 | Leakage repair method for expansion device part of bridge |
| JP5638841B2 (en) * | 2010-06-01 | 2014-12-10 | 株式会社ダイフレックス | One-component polyurethane resin composition for preventing stripping of concrete pieces and tiles and method for preventing stripping of concrete pieces and tiles using the same |
| JP5967437B2 (en) * | 2012-10-16 | 2016-08-10 | 清水建設株式会社 | Anchor bolt anchorage reinforcement structure |
| JP5662498B2 (en) * | 2013-02-13 | 2015-01-28 | 矢作建設工業株式会社 | Concrete structure and method for coating concrete surface |
| JP6320223B2 (en) * | 2014-07-30 | 2018-05-09 | アイカ工業株式会社 | Concrete stripping prevention structure, this peeling prevention construction method, and alicyclic polyamine used in them |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61261282A (en) * | 1985-05-13 | 1986-11-19 | 第一工業製薬株式会社 | Method of coating concrete or mortar structure |
| JP3597264B2 (en) * | 1995-08-24 | 2004-12-02 | 横浜ゴム株式会社 | Base adjuster composition |
-
2004
- 2004-06-18 JP JP2004181363A patent/JP4780938B2/en not_active Expired - Fee Related
-
2005
- 2005-06-17 CN CNB2005100775881A patent/CN100475743C/en not_active Expired - Fee Related
- 2005-06-17 SG SG200503924A patent/SG118388A1/en unknown
-
2006
- 2006-03-30 HK HK06103957.9A patent/HK1083827A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JP4780938B2 (en) | 2011-09-28 |
| SG118388A1 (en) | 2006-01-27 |
| CN100475743C (en) | 2009-04-08 |
| HK1083827A1 (en) | 2006-07-14 |
| JP2006001812A (en) | 2006-01-05 |
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