NO127457B - - Google Patents
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- Publication number
- NO127457B NO127457B NO345470A NO345470A NO127457B NO 127457 B NO127457 B NO 127457B NO 345470 A NO345470 A NO 345470A NO 345470 A NO345470 A NO 345470A NO 127457 B NO127457 B NO 127457B
- Authority
- NO
- Norway
- Prior art keywords
- dispersion
- stated
- passivating agent
- iron
- aqueous dispersion
- Prior art date
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- 239000006185 dispersion Substances 0.000 claims description 18
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000004567 concrete Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000003054 catalyst Substances 0.000 claims description 5
- 239000000178 monomer Substances 0.000 claims description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 229920001971 elastomer Polymers 0.000 claims description 4
- 239000004816 latex Substances 0.000 claims description 4
- 229920000126 latex Polymers 0.000 claims description 4
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical group NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 3
- 150000001450 anions Chemical class 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 235000019801 trisodium phosphate Nutrition 0.000 claims description 3
- 235000011009 potassium phosphates Nutrition 0.000 claims description 2
- SOBHUZYZLFQYFK-UHFFFAOYSA-K trisodium;hydroxy-[[phosphonatomethyl(phosphonomethyl)amino]methyl]phosphinate Chemical compound [Na+].[Na+].[Na+].OP(O)(=O)CN(CP(O)([O-])=O)CP([O-])([O-])=O SOBHUZYZLFQYFK-UHFFFAOYSA-K 0.000 claims description 2
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims 1
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical group 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- MTPJEFOSTIKRSS-UHFFFAOYSA-N 3-(dimethylamino)propanenitrile Chemical compound CN(C)CCC#N MTPJEFOSTIKRSS-UHFFFAOYSA-N 0.000 description 1
- 239000004160 Ammonium persulphate Substances 0.000 description 1
- RHNZWEVYQLVIBU-UHFFFAOYSA-N CC(C#N)N(C)C.N Chemical compound CC(C#N)N(C)C.N RHNZWEVYQLVIBU-UHFFFAOYSA-N 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 235000019395 ammonium persulphate Nutrition 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000000337 buffer salt Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011814 protection agent Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical class [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
- E04B1/642—Protecting metallic construction elements against corrosion
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Paints Or Removers (AREA)
- Sealing Material Composition (AREA)
Description
Korrosjonsbeskyttelsesmiddel for jern som befinner seg Corrosion protection agent for iron located
i hulrom, porøse masser eller sprekker, spesielt i betong. in cavities, porous masses or cracks, especially in concrete.
Den foreliggende oppfinnelse angår korrosjonsbeskyttelse av jern, The present invention relates to corrosion protection of iron,
særlig jern som "befinner seg i hulrom, porose masser eller sprekker, especially iron that "is in cavities, porous masses or cracks,
som f.eks. i betong. like for example. in concrete.
For å beskytte jern not korrosjon under atmosfæriske forhold To protect iron from corrosion under atmospheric conditions
benyttes maling eller av og til en elektrolysemetode (katodisk beskyttelse). paint or occasionally an electrolysis method (cathodic protection) is used.
Jernet i en armert betong eller spennbetong har vanligvis ikke The iron in a reinforced concrete or prestressed concrete usually does not
blitt beskyttet på kunstig måte, men selv om betongen ikke er full- been protected artificially, but even if the concrete is not fully
stendig tett overfor atmosfæriske angrep, er det funnet at den hydratiserte scimenten gir effektiv beskyttelse fordi den har en constantly close to atmospheric attack, the hydrated sciment has been found to provide effective protection because it has a
pH so.n passiverer jaraet. For at denne beskyttelse skal være virkningsfall må jernet være godt omsluttet. Danne betingelse kan ikke oppnås hvis■betongen er meget poros eller sprukket. I pH so.n passivates the jaraet. For this protection to be effective, the iron must be well enclosed. This condition cannot be achieved if the ■concrete is very porous or cracked. IN
dette tilfelle vil det derfor være nodvendig å forbedre dan sprukne betongen ved innsproytning, og innsproytningsmassen må in this case, it will therefore be necessary to improve the then cracked concrete by injection, and the injection compound must
være tilstrekkelig flytende slik at den trenger fullstendig inn i porer og sprekker i betongen og gir en fullstendig og varig tetning. be sufficiently fluid so that it penetrates completely into pores and cracks in the concrete and provides a complete and lasting seal.
Den foreliggende oppfinnelse angår folgelig en dispersjon som The present invention therefore relates to a dispersion which
i kald tilstand kan omdannes til en elastisk omhyllingsmasse, in a cold state can be converted into an elastic covering mass,
for derved å beskytte jern som befinner seg i hulrom, porose masser eller sprekker, spesielt i betong, idet dispersjonen inneholder et passiveringsmiddel for jern som omfatter att eller flere salter med basisk reaksjon og hvis anion ikke virker korroderende og som gjor det mulig å opprettholde en pH-verdi mellom 9 og 11, og det særegne ved dispersjonen er at passiveringsmidlet er homogent dispergert i en vandig dispersjon av en vinylmoriomer eller -prepolymer, som i kald tilstand kan omdannes til en elastomer i nærvær av en katalysator som utgjor mellom 1 og 7 vektprosent på basis av innholdet av monorner eller prepolymer. in order to thereby protect iron located in cavities, porous masses or cracks, especially in concrete, as the dispersion contains a passivating agent for iron which comprises one or more salts with a basic reaction and whose anion does not have a corrosive effect and which makes it possible to maintain a pH value between 9 and 11, and the peculiarity of the dispersion is that the passivating agent is homogeneously dispersed in an aqueous dispersion of a vinyl moriomer or prepolymer, which in the cold state can be converted into an elastomer in the presence of a catalyst that constitutes between 1 and 7 weight percent based on the content of monomers or prepolymer.
Passiveringsmidlet for jernet kan omfatte ett eller flore slike kjente midler og/eller en basisk buffer, som i opplesning er i stand til å holde pH i området 9 til 11, fortrinnsvis i området 9,5 til 10. Salter som kan benyttes er slike som ha" en basisk reaksjon hvor anionet ikke virker korroderende, f.eks. karbonater og silikater av alkalimetallene. Spesielt viktig or primære, sekundære og tertiære fosfater av alkalimetallene, især en blandirg av mono-, di-, og tri- natrium- eller-kalium-fosfater, fortrinnsvis di og tri-natrium-fosfater. I tilfellet med,fosfåtene, som på The passivating agent for the iron may comprise one or more such known agents and/or a basic buffer, which in reading is capable of keeping the pH in the range 9 to 11, preferably in the range 9.5 to 10. Salts that can be used are such as have" a basic reaction where the anion is not corrosive, e.g. carbonates and silicates of the alkali metals. Particularly important are primary, secondary and tertiary phosphates of the alkali metals, especially a mixture of mono-, di- and tri- sodium or potassium phosphates, preferably di- and tri-sodium phosphates In the case of the phosphates, as in
samme tid har en passiverende virkning og en buffervirkning, at the same time has a passivating effect and a buffering effect,
kan det benyttes en mengde som gir en pH i området 9- 11, can an amount be used that gives a pH in the range 9-11,
spesielt i området 9, 5- 10. especially in the area 9, 5-10.
fteroyr-3/i '"or passiveringsmidlet er. en vandig dispersjon av en' vinyl-monomer eller et derivat av lavere polyverisasjonsgrad (prepolymer) av denne, og inneholder ett eller flere tilsetnings- fteroyr-3/i '"or the passivating agent is. an aqueous dispersion of a' vinyl monomer or a derivative of a lower degree of polymerization (prepolymer) thereof, and contains one or more additives
stoffer og katalysatorer, som f.eks. et redoks-par bestående av et reduksjonsmiddel, f„eks. et amin, og et oksydasjonsmiddel, f.eks. et persulfat, som gjor at væsken kan omformes til en elastomer i kald tilstand. De vinylforbindelser som særlig egner seg for omvendelse som bærevæske er vandige dispersjonar av forbindelser som minst har ett funksjonelt acrylamid, spesielt acrylamid og/eller metyl-bis-acrylamid. Slike dispersjoner er meget lettflytende og egner seg således foe innsprøytning i sprekker og etter polymerisasjon danner de en tykt-flytende og elastisk masse, som inneholder vannet i den opprinnelige dispersjon. Som eksempel kan det nevnes et stoff som finnes i handel under navnet "AM-9" fra la Societe American Cyanamid Co. substances and catalysts, such as a redox couple consisting of a reducing agent, e.g. an amine, and an oxidizing agent, e.g. a persulphate, which allows the liquid to be transformed into an elastomer in the cold state. The vinyl compounds which are particularly suitable for conversion as a carrier liquid are aqueous dispersions of compounds which have at least one functional acrylamide, especially acrylamide and/or methyl-bis-acrylamide. Such dispersions are very easy-flowing and are thus suitable for injection into cracks and after polymerisation they form a thick-flowing and elastic mass, which contains the water in the original dispersion. As an example, a substance available commercially under the name "AM-9" from la Societe American Cyanamid Co. can be mentioned.
Til den vandige dispersjon av bærevæsken kan det videre tilsettes en naturlig lataks eller en syntetisk lateks, fortrinnsvis en lateks av polybutadien eller polyisopren. De fine gummipartiklene befinner seg da innesluttet i massen og oker derved s tyk.-;n og elastisiteten. Mengden av lateks som tilsettes blandingen kan være opptil 50% >. Det skal bemerkes at buffersaltene og/eller passiveringsmidlene er godt bundet sammen med blandingen, som er fullstendig tett, og de kan ikke diffundere i det omgivende vann. Konsentrasjonen av disse midlene i blandingen kan derfor være mindre enn 10%, dog uten.at et overskudd vil være skadelig, idet en konsentrasjon på 2- 6% vanligvis er tilstrekkelig for å oppnå den ønskede effekt. A natural latex or a synthetic latex, preferably a latex of polybutadiene or polyisoprene, can also be added to the aqueous dispersion of the carrier liquid. The fine rubber particles are then enclosed in the mass and thereby increase the thickness and elasticity. The amount of latex added to the mixture can be up to 50% >. It should be noted that the buffer salts and/or passivating agents are well bound together with the mixture, which is completely dense, and they cannot diffuse into the surrounding water. The concentration of these agents in the mixture can therefore be less than 10%, without, however, that an excess will be harmful, since a concentration of 2-6% is usually sufficient to achieve the desired effect.
EKSEMPEL 1 : EXAMPLE 1:
EKSEMPEL 2: EKSEMPEL 3.1 EXAMPLE 2: EXAMPLE 3.1
(x) I alle eksemplene benyttes det kjent redoks-par dimetylaminopropionitril-ammoniumpersulfat som katalysator. (x) In all the examples, the known redox couple dimethylaminopropionitrile-ammonium persulfate is used as catalyst.
Mengden av benyttet katalysator varierer slik: The amount of catalyst used varies as follows:
a) 3-7 g dimetylaminopropionitril a) 3-7 g of dimethylaminopropionitrile
b) 0,3-0,7 g ammoniumpersulfat b) 0.3-0.7 g of ammonium persulphate
Anvendelse av 3 g av a) og 0,3 g av b) gir en reaksjonstid på Application of 3 g of a) and 0.3 g of b) gives a reaction time of
V timer eller lenger, og anvendelse av 7 g av a) og 0,7 g V hours or longer, and application of 7 g of a) and 0.7 g
av b) gir en reaksjonstid på mindre enn 1 time. of b) gives a reaction time of less than 1 hour.
Disse forskjellige blandinger frigjor ikke vann ved utskillelse og forblir derfor fullstendig tette. Videre er blandingene meget elastiske og sprekker ikke selv om underlaget beveger seg. These different mixtures do not release water during excretion and therefore remain completely dense. Furthermore, the mixtures are very elastic and do not crack even if the substrate moves.
De korrosjonshindrende fnidler kan benyttes til beskyttelse av kablene i spennbetong. Det er tidligere kjent å fylle det ringformede rom mellom kablen eller tråden og hallet med en masse av sement eller en mortel av sand og sement. Når kablen er satt under spenning og etter innsproytning av fyllmassen, The corrosion-preventing fins can be used to protect the cables in prestressed concrete. It is previously known to fill the annular space between the cable or wire and the hall with a mass of cement or a mortar of sand and cement. When the cable is under tension and after injection of the filler,
vil dane på grunn av at den er meget mindre elastisk enn stål, lett komme til å sprekke. Det er derfor av betydning å erstatte den nevnte masse med en masse med storre elastisitet, f.eks. den som er beskrevet ovenfor. will deform because it is much less elastic than steel, easily crack. It is therefore important to replace the aforementioned mass with a mass with greater elasticity, e.g. the one described above.
For å begrense utgiftene og likeledes for å unngå unodvendig tap av den flytende massen på et.sted som ikke nodvendigvis er tett, vil det i de fleste tilfeller være nyttig å gjore blandingen tykkere ved å tilsette et eller flere fyllstoffer i form av fint pulver, som eventuelt kan være fin sand. Eksempelvis kan det til produktene i eksemplene 1-3 tilsettes: In order to limit the expenses and likewise to avoid unnecessary loss of the liquid mass in a place that is not necessarily dense, it will in most cases be useful to make the mixture thicker by adding one or more fillers in the form of fine powder, which can possibly be fine sand. For example, the products in examples 1-3 can be added:
250 g pulverformet kritt, 250 g powdered chalk,
1 750 g fin sand 1,750 g fine sand
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR6931181A FR2060204A1 (en) | 1969-09-12 | 1969-09-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
NO127457B true NO127457B (en) | 1973-06-25 |
Family
ID=9040025
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO345470A NO127457B (en) | 1969-09-12 | 1970-09-10 |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS4933254B1 (en) |
AT (1) | AT301979B (en) |
BE (1) | BE754281A (en) |
CA (1) | CA928057A (en) |
DE (1) | DE2039119A1 (en) |
ES (1) | ES377525A1 (en) |
FR (1) | FR2060204A1 (en) |
GB (1) | GB1311942A (en) |
NL (1) | NL7013290A (en) |
NO (1) | NO127457B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017008987A1 (en) * | 2017-09-26 | 2019-03-28 | Sto Se & Co. Kgaa | Storage stable coating composition |
-
0
- BE BE754281D patent/BE754281A/en unknown
-
1969
- 1969-09-12 FR FR6931181A patent/FR2060204A1/fr not_active Withdrawn
-
1970
- 1970-03-14 ES ES377525A patent/ES377525A1/en not_active Expired
- 1970-08-06 DE DE19702039119 patent/DE2039119A1/en active Pending
- 1970-08-11 CA CA090509A patent/CA928057A/en not_active Expired
- 1970-08-21 GB GB4047170A patent/GB1311942A/en not_active Expired
- 1970-08-26 AT AT774670A patent/AT301979B/en active
- 1970-09-09 NL NL7013290A patent/NL7013290A/xx unknown
- 1970-09-10 NO NO345470A patent/NO127457B/no unknown
- 1970-09-12 JP JP8042070A patent/JPS4933254B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS4933254B1 (en) | 1974-09-05 |
ES377525A1 (en) | 1972-07-01 |
DE2039119A1 (en) | 1972-01-27 |
CA928057A (en) | 1973-06-12 |
BE754281A (en) | 1970-12-31 |
GB1311942A (en) | 1973-03-28 |
NL7013290A (en) | 1971-03-16 |
FR2060204A1 (en) | 1971-06-18 |
AT301979B (en) | 1972-09-25 |
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