NO319145B1 - Alkali-free liquid bonding and curing accelerator for cement, method for accelerating bonding and curing of cement and use of the accelerator - Google Patents
Alkali-free liquid bonding and curing accelerator for cement, method for accelerating bonding and curing of cement and use of the accelerator Download PDFInfo
- Publication number
- NO319145B1 NO319145B1 NO19961799A NO961799A NO319145B1 NO 319145 B1 NO319145 B1 NO 319145B1 NO 19961799 A NO19961799 A NO 19961799A NO 961799 A NO961799 A NO 961799A NO 319145 B1 NO319145 B1 NO 319145B1
- Authority
- NO
- Norway
- Prior art keywords
- accelerator
- cement
- accelerator according
- amorphous
- concrete
- Prior art date
Links
- 239000004568 cement Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000007788 liquid Substances 0.000 title claims description 9
- 239000004567 concrete Substances 0.000 claims abstract description 25
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 13
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 11
- 238000010276 construction Methods 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000011378 shotcrete Substances 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- -1 aluminum compound Chemical class 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 5
- 239000002562 thickening agent Substances 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- SQAINHDHICKHLX-UHFFFAOYSA-N 1-naphthaldehyde Chemical compound C1=CC=C2C(C=O)=CC=CC2=C1 SQAINHDHICKHLX-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 claims description 2
- 229920000615 alginic acid Polymers 0.000 claims description 2
- 235000010443 alginic acid Nutrition 0.000 claims description 2
- 229920001222 biopolymer Polymers 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 229940042400 direct acting antivirals phosphonic acid derivative Drugs 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 150000007974 melamines Chemical class 0.000 claims description 2
- 150000003007 phosphonic acid derivatives Chemical class 0.000 claims description 2
- 239000010695 polyglycol Substances 0.000 claims description 2
- 229920000151 polyglycol Polymers 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 229910021653 sulphate ion Inorganic materials 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 2
- 239000000440 bentonite Substances 0.000 claims 2
- 229910000278 bentonite Inorganic materials 0.000 claims 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims 1
- 229910002651 NO3 Inorganic materials 0.000 claims 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims 1
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 claims 1
- 150000003839 salts Chemical class 0.000 abstract description 4
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract 1
- 239000010440 gypsum Substances 0.000 description 10
- 229910052602 gypsum Inorganic materials 0.000 description 10
- 230000001133 acceleration Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 235000021317 phosphate Nutrition 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical class [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 3
- 235000011132 calcium sulphate Nutrition 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 235000002639 sodium chloride Nutrition 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000011398 Portland cement Substances 0.000 description 2
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 159000000007 calcium salts Chemical class 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000002706 dry binder Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 2
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- 206010015943 Eye inflammation Diseases 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical class O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 229940037003 alum Drugs 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- JLDSOYXADOWAKB-UHFFFAOYSA-N aluminium nitrate Chemical class [Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O JLDSOYXADOWAKB-UHFFFAOYSA-N 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid group Chemical class C(CC(O)(C(=O)O)CC(=O)O)(=O)O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 229910001679 gibbsite Inorganic materials 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 125000005395 methacrylic acid group Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- KVOIJEARBNBHHP-UHFFFAOYSA-N potassium;oxido(oxo)alumane Chemical compound [K+].[O-][Al]=O KVOIJEARBNBHHP-UHFFFAOYSA-N 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/12—Set accelerators
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/14—Hardening accelerators
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
- C04B2111/1025—Alkali-free or very low alkali-content materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
- C04B2111/1062—Halogen free or very low halogen-content materials
Abstract
Description
Foreliggende oppfinnelse angår en alkalifri flytende avbindings- og herdingsakselerator for sement, en fremgangsmåte for akselerering av avbinding og herding av sement samt anvendelse av akseleratoren. The present invention relates to an alkali-free liquid setting and hardening accelerator for cement, a method for accelerating the setting and hardening of cement and the use of the accelerator.
Det er allerede kjent flere substanser, som akselererer avbinding og herding av betong. De vanligste er bl.a. sterkt alkalisk reagerende stoffer som alkalihydroksider, alkali-karbonater, alkalisilikater, alkalialuminater og jordalkaliklorider. Med de sterkt alkalisk reagerende stoffene inntrer uønskede belastninger på de som arbeider. Således kan slike produkter sterkt etse huden og forårsake øyebetennelse og homhinneetsinger, som i vesentlig grad kan påvirke synsevnen. Når man puster inn støvet som oppstår under arbeidet, kan det også oppstå skadelige påvirkninger av luftveiene. Several substances are already known which accelerate the setting and hardening of concrete. The most common are i.a. strongly alkaline reacting substances such as alkali hydroxides, alkali carbonates, alkali silicates, alkali aluminates and alkaline earth chlorides. With the strongly alkaline-reactive substances, undesirable stresses occur on those who work. Thus, such products can strongly etch the skin and cause eye inflammation and corneal etching, which can significantly affect the ability to see. When you breathe in the dust that arises during work, harmful effects on the respiratory tract can also occur.
Betongteknologisk reduserer sterkt alkalisk avbildningsakseleratorer sluttfastheten, forsterker svinn, og dette kan føre til rissdannelse og kan påvirke varigheten til bygg-verket. In terms of concrete technology, strongly alkaline imaging accelerators reduce the final strength, increase shrinkage, and this can lead to cracking and can affect the durability of the building.
Alkaliholdige akseleratorer kan dessuten bli vasket ut og fører dermed til forurensninger av grunn- og drikkevann såvel som av elver og sjøer. Disse forurensningene kan også føre til forsintring av drenering og vannkanaler. Alkali-containing accelerators can also be washed out and thus lead to contamination of groundwater and drinking water as well as rivers and lakes. These pollutants can also lead to sintering of drainage and water channels.
Kloridholdige avbindingsakseleratorer er som regel uønsket på byggestedet, da de både kan føre til korrosjon på armeringsjern i betong og også på byggeutstyret. Chloride-containing setting accelerators are generally undesirable on the construction site, as they can both lead to corrosion of reinforcing bars in concrete and also to the construction equipment.
Videre er det kjent at kloridholdige avbindingsakseleratorer sterkt reduserer kjemikalibestandigheten, fremfor alt sulfatbestandigheten i sement. Furthermore, it is known that chloride-containing setting accelerators greatly reduce the chemical resistance, above all the sulphate resistance in cement.
Fra JP 511 444 25 er det kjent en akselerator som inneholder amorft aluminiumhydroksid og eventuelt en blanding av gips-dihydrat-, -hemidrat og - anhydritt. From JP 511 444 25, an accelerator is known which contains amorphous aluminum hydroxide and possibly a mixture of gypsum dihydrate, hemihydrate and anhydrite.
Denne akseleratoren er uegnet for anvendelse i dispergert form, den er ikke lagringsstabil, da det utherdes hemihydrat og anhydritt med vann. This accelerator is unsuitable for use in dispersed form, it is not storage stable, as the hemihydrate and anhydrite are cured with water.
Målet ved foreliggende oppfinnelse er således å stille til rådighet en avbindings- og herdingsakselerator for sement, som fortrinnsvis er alkalifri og som - dersom ønskelig - kan bli anvendt som vandig dispersjon. The aim of the present invention is thus to provide a setting and hardening accelerator for cement, which is preferably alkali-free and which - if desired - can be used as an aqueous dispersion.
Dette målet oppnås ved at oppfinnelsen tilveiebringer en alkalifri avbindings- og herdingsakselerator inneholdende kalsiumsulfat og en aluminiumforbindelse, kjennetegnet ved at a) kalsiumsulfatet er kalsiumsulfatdihydrat og b) aluminiumforbindelsen er amorft aluminiumhydroksid og/eller et amorft og/eller krystallinsk basisk aluminiumsalt. This goal is achieved by the invention providing an alkali-free debonding and curing accelerator containing calcium sulfate and an aluminum compound, characterized in that a) the calcium sulfate is calcium sulfate dihydrate and b) the aluminum compound is amorphous aluminum hydroxide and/or an amorphous and/or crystalline basic aluminum salt.
Videre tilveiebringer oppfinnelsen en fremgangsmåte for akselerering av avbinding og herding av sement, så vel som den derav fremstilte mørtel og betong, kjennetegnet ved at man til en blanding som inneholder sement tilsetter en akselerator som omtalt ovenfor i mengder fra 0,1 til 20 vekt-%, med hensyn på vekt av sement. Furthermore, the invention provides a method for accelerating the setting and hardening of cement, as well as the mortar and concrete produced therefrom, characterized by adding an accelerator as mentioned above to a mixture containing cement in amounts from 0.1 to 20 wt. %, with regard to the weight of cement.
Endelig omfatter oppfinnelsen anvendelse av en avbildnings-og herdingskatalysator som omtalt ovenfor for akselerering av avbindning og herding av sement og videre anvendelse av denne i injeksjonsslemminger, i sprøytemørtel eller sprøytebetong, eller tørr- eller våtsprøytefremgangsmåter. Finally, the invention includes the use of an imaging and hardening catalyst as mentioned above for accelerating the setting and hardening of cement and its further use in injection slurries, in sprayed mortar or sprayed concrete, or dry or wet spraying methods.
De fleste nåværende vanlige aluminiumkomponentene for akselerering av avbinding og herding av betong, som kalsiumaluminater og kalsiumsulfonater, er uegnede for flytende akseleratorer, da de reagerer med vann. De oppløselige saltene, som aluminiumsulfater eller aluminumnitrater er uegnede, da deres løsninger er fortynnet for å oppnå en tilstrekkelig avbindings- og herdingsakselerering i betong ved en dosering på høyst 10% av sementvekt. Andre salter som aluner inneholder uønskede alkalier. Most of the current common aluminum components for accelerating the setting and hardening of concrete, such as calcium aluminates and calcium sulphonates, are unsuitable for liquid accelerators, as they react with water. The soluble salts, such as aluminum sulphates or aluminum nitrates, are unsuitable, as their solutions are diluted to achieve a sufficient setting and hardening acceleration in concrete at a dosage of no more than 10% of cement weight. Other salts such as alum contain undesirable alkalis.
Det er nå funnet at en blanding som inneholder It has now been found that a mixture containing
1. Kalsiumsulfat, i form av gips (kalsiumsulfatdihydrat), fosfatgips eller blandinger av disse med mindre enn 50% forurensninger som metallsulfater eller andre kalsiumsalter, og 2. amorft aluminiumhydroksid, og/eller basiske aluminiumsalter der et foretrukket basisk aluminiumsalt kan være amorft basisk aluminiumsulfat med mindre enn 25% av andre anioner som fosfatet, karbonatet, azetatet, formiatet, etc. (betegnelsen amorft basisk aluminiumsulfat står for en blanding av amorf aluminiumhydroksid, der en del av hydroksidgruppene er erstattet med et sulfat. Avhengig av antall erstattede hydroksidgrupper, inneholder blandingen Al(OH)3 og en eller flere av følgende substanser med ytterligere forurensninger: Al2(OH)4S04, AIOHSO4, Al2(S04)3), 1. Calcium sulfate, in the form of gypsum (calcium sulfate dihydrate), phosphate gypsum or mixtures of these with less than 50% impurities such as metal sulfates or other calcium salts, and 2. amorphous aluminum hydroxide, and/or basic aluminum salts where a preferred basic aluminum salt may be amorphous basic aluminum sulfate with less than 25% of other anions such as the phosphate, carbonate, acetate, formate, etc. (the term amorphous basic aluminum sulfate stands for a mixture of amorphous aluminum hydroxide, where part of the hydroxide groups have been replaced with a sulfate. Depending on the number of replaced hydroxide groups, contains the mixture Al(OH)3 and one or more of the following substances with additional impurities: Al2(OH)4S04, AIOHSO4, Al2(S04)3),
er en meget god alkalifri avbindings- og herdingsakselerator for sement, som godt kan is a very good alkali-free setting and hardening accelerator for cement, which can
bli anvendt som vandig dispersjon. be used as an aqueous dispersion.
I foreliggende oppfinnelse ble det for første gang forenet en i flytende form anvendbar, alkalifri akselerator med utmerket avbindings- og herdingsakselerering i et produkt. In the present invention, an alkali-free accelerator usable in liquid form was combined for the first time with excellent debinding and curing acceleration in one product.
For disse blir det - ved siden av de ovenfornevnte komponentene 2 - som komponent 1 anvendt gisp (kalsiumsulfatdihydrat), fosfatgips eller blandinger av disse med mindre enn 50% forurensninger som metallsulfater og andre kalsiumsalter og videre For these, gypsum (calcium sulfate dihydrate), phosphate gypsum or mixtures of these with less than 50% impurities such as metal sulfates and other calcium salts and more are used as component 1 - next to the above-mentioned components 2
3. Vann (fortrinnsvis drikkevann) 3. Water (preferably drinking water)
4. inntil 10% tilsetning av dispergeringshjelpemidler som sulfonerte melamin- eller naftalin-formaldehyd-kondensater, polymerer eller kopolymerer av akryl- eller metakrylsyrer eller deres derivater, fosfonsyrederivater, fosfater og polyfosfater, sitronsyrer eller salter av nevnte syrer, 5. inntil 5% fortrykker som betonitt, bentoner, amorfe silisiumdioksider, fermenterte organiske biopolymerer, polyglykoleter, alginater, akrylat- eller uretanfortykkere, 6. inntil 5% ytterligere tilsetninger for forenkling av produksjon eller påføring av konserveringsmiddel, anti-skummemidler, flytendegjørere, etc. 4. up to 10% addition of dispersing aids such as sulfonated melamine or naphthalene-formaldehyde condensates, polymers or copolymers of acrylic or methacrylic acids or their derivatives, phosphonic acid derivatives, phosphates and polyphosphates, citric acids or salts of said acids, 5. up to 5% prepress such as betonite, bentones, amorphous silicon dioxides, fermented organic biopolymers, polyglycol ethers, alginates, acrylate or urethane thickeners, 6. up to 5% additional additives to facilitate the production or application of preservatives, anti-foaming agents, liquefiers, etc.
For fremstilling av produktene ifølge oppfinnelsen kan gips og aluminiumkomponenter adskilt eller etter forblanding, fortrinnsvis ved hjelp av et dispergeringsmiddel, innføres i vandig fase. For stabilisering av suspensjonen blir det fortrinnsvis anvendt en fortykker. Meget godt egnede dispergeringshjelpemidler/stabilisatorer er f.eks. alkali-salter av polyakrylsyrer og/eller akrylsyrekopolymerer. For the production of the products according to the invention, gypsum and aluminum components can be introduced into the aqueous phase separately or after premixing, preferably with the aid of a dispersant. A thickener is preferably used to stabilize the suspension. Very suitable dispersing aids/stabilizers are e.g. alkali salts of polyacrylic acids and/or acrylic acid copolymers.
Som alternativer kan gips også bli tilsatt betongen eller sementen i betongverket eller på byggestedet. Dette tillater høyere konsentrasjon av aluminiumkomponenter i slurryen og dermed en mindre dosering av akselerator på byggestedet. Dette er mulig fordi gips, dvs. kalsiumsulfatdihydrat, alene ikke har noen akselererende virkning på avbinding av betong og dessuten er fuktighet som finnes i betongen ukritisk. pH-verdien av slurryen må ikke være sterkt basisk eller sur, for at virkningen ikke skal påvirkes ved krystallisasjon. As an alternative, gypsum can also be added to the concrete or cement in the concrete plant or on the construction site. This allows a higher concentration of aluminum components in the slurry and thus a smaller dosage of accelerator on the construction site. This is possible because plaster, i.e. calcium sulphate dihydrate, alone has no accelerating effect on the setting of concrete and, furthermore, moisture present in the concrete is not critical. The pH value of the slurry must not be strongly basic or acidic, so that the effect is not affected by crystallization.
Akseleratoren ifølge oppfinnelsen kan ikke bare bli dispergert i vann, men kan også finne anvendelse som pulver. Gjennom anvendelse av egnet dispergeringshjelpemiddel kan dispersjonen bli fremstilt med et faststoffinnhold inntil 80%. The accelerator according to the invention can not only be dispersed in water, but can also be used as a powder. Through the use of a suitable dispersion aid, the dispersion can be produced with a solids content of up to 80%.
Ved anvendelse av akseleratoren i pulverform blir denne forblandet med tørr sement eller med tørr mørtel eller betong og denne blandingen blir deretter utherdet gjennom tilsetning av vann. Selv om denne anvendelse gir gode resultater er anvendelse av akselerator fortrukket som dispersjon, da det er lettere å oppnå en homogen gjennomblanding med bindemiddelholdige komponenter. When using the accelerator in powder form, this is premixed with dry cement or with dry mortar or concrete and this mixture is then cured by adding water. Although this application gives good results, the use of an accelerator is preferred as a dispersion, as it is easier to achieve a homogeneous thorough mixing with binder-containing components.
Naturligvis kan akseleratorene ifølge oppfinnelsen også bli tilblandet før anvendelse i fabrikken ved bindemiddelfremstiIlingen eller umiddelbart ved anvendelse av tørt bindemiddel alene eller i forfabrikert tørr mørtel eller betong. Naturally, the accelerators according to the invention can also be mixed before use in the factory during the binder production or immediately when using dry binder alone or in prefabricated dry mortar or concrete.
Som nevnt over kan akseleratoren ifølge oppfinnelsen tilsettes til tørt eller med vann blandet bindemiddel, mørtel eller betong i produksjonsanlegget (fortrinnsvis tørre bindemiddelholdige komponenter og pulverformige akselerator og tilsvarende fuktige, bindemiddelholdige komponenter og gips) eller på byggeplassen. Tilsetningen kan foregå i blander, i transportpumpe, transportledning, forblandingsdyse, sprøytedyse eller akseleratoren kan bli tilsatt over en statisk blander med en pulverdoseringsapparatur eller en flytende doseringsapparatur direkte til blandingen eller med transportluft. As mentioned above, the accelerator according to the invention can be added to dry or water-mixed binder, mortar or concrete in the production plant (preferably dry binder-containing components and powdered accelerator and correspondingly moist, binder-containing components and plaster) or on the construction site. The addition can take place in a mixer, in a transport pump, transport line, premix nozzle, spray nozzle or the accelerator can be added over a static mixer with a powder dosing device or a liquid dosing device directly to the mixture or with transport air.
Gipsen er bestanddel i akseleratoren, slik at det i betong kan dannes mineralet ettringitt, som i betydelig grad er ansvarlig for herdingsakselerasjon. Gypsum is a component of the accelerator, so that the mineral ettringite can be formed in concrete, which is largely responsible for hardening acceleration.
Mol-forholdet aluminium til sulfat (omfattende alle inneholdte sulfationer i akseleratoren) ligger vanligvis i området fra 0,1 til 10. The mole ratio of aluminum to sulfate (including all contained sulfate ions in the accelerator) is typically in the range of 0.1 to 10.
Akseleratoren benyttes vanligvis i mengde fra 0,1 til 20 vektprosent (tørrsubstans), med hensyn på vekten av sementen. The accelerator is usually used in amounts from 0.1 to 20 percent by weight (dry substance), taking into account the weight of the cement.
Anvendelsesmulighetene for denne akseleratoren ligger i fremstilling av forfabrikerte elementer og akselerering av den fremstilte betongen på byggeplassen. I førstnevnte tilfelle kan den vanlige herdingsakselereringen bli forkortet med varme (elektra- eller oljeoppvarming eller damp) eller den kan helt bli eliminert eller det kan også ved lavere temperaturer oppnås ytterligere herding. Anvendelse kan også skje ved fremstilling av raskt avbindende sement- og mørtelblandinger, spesielt for fiksering av ferdigdeler, støpestykker, etc. The application possibilities for this accelerator lie in the production of prefabricated elements and acceleration of the manufactured concrete on the construction site. In the former case, the usual hardening acceleration can be shortened by heat (electrical or oil heating or steam) or it can be completely eliminated or further hardening can also be achieved at lower temperatures. Application can also take place in the production of fast setting cement and mortar mixtures, especially for fixing finished parts, castings, etc.
Et ytterligere anvendelsesområde er akselerering av utherdingen av sementoppslemminger, som kan bli anvendt for tetting og festing av steinklipper, løsstein eller gulv. A further area of application is the acceleration of the hardening of cement slurries, which can be used for sealing and fixing stone cliffs, loose stones or floors.
Et spesielt anvendelsesområde er sprøytemørtel og sprøytebetong. Slik mørtel og betong tjener til fremstilling av byggverk i høy og lavhus, så vel som bygging og kledning av underjordiske, naturlig eller kunstig tilveiebrakte hulrom, som stoller-, tunnel- eller bergbygg, der betongen må tilfredsstille statiske krav, så vel som at den må være tett for vann. Den tjener likeledes til konsolidering av byggegruber, helninger, løse steinvegger, etc. A particular area of application is shotcrete and shotcrete. Such mortar and concrete serve for the production of construction works in high-rise and low-rise buildings, as well as the construction and lining of underground, naturally or artificially provided cavities, such as tunnels, tunnels or rock buildings, where the concrete must satisfy static requirements, as well as that it must be watertight. It also serves to consolidate building pits, slopes, loose stone walls, etc.
Akseleratoren ifølge oppfinnelsen er egnet både i tørr- og også i våtsprøytefremgangsmåter. The accelerator according to the invention is suitable both in dry and also in wet spraying methods.
Oppfinnelsen blir ytterligere forklart ved hjelp av følgende eksempler. The invention is further explained by means of the following examples.
Eksempel 1 Example 1
Det ble fremstilt to forskjellige slurryakseleratorer og i tørrsprøyting ble deres virkning i betong undersøkt. Two different slurry accelerators were produced and their effect in concrete was investigated in dry spraying.
Sprøytebetongen for tørrsprøyterfemgangsmåten inneholder 350 kg/m^ Portlandsement og de største kornene utgjør 8 mm. Det ble anvendt en Aliva AL 246 sprøytebetongmaskin med en 3,5 1 rotor og 40 m slange med en indre diameter på 32 mm. Avbindingsoppførselen ble bestemt ved hjelp av inntrengingsmotstand med en Mecmesin mikroprosessorkraftmåler og en nåleoppsats. The shotcrete for the dry shot five-pass method contains 350 kg/m^ Portland cement and the largest grains are 8 mm. An Aliva AL 246 shotcrete machine with a 3.5 1 rotor and 40 m hose with an inner diameter of 32 mm was used. Debonding behavior was determined using penetration resistance with a Mecmesin microprocessor force meter and a needle attachment.
Det er åpenbart at betong akselerert med slurry B (med største gipsmengde) viser, en betydelig bedre fasthetsutvikling sammenlignet med slurry A. It is obvious that concrete accelerated with slurry B (with the largest amount of gypsum) shows a significantly better strength development compared to slurry A.
Begge slurryer er lagringsstabile i minst fire måneder lagringsstabile og viser ikke noe aktivitetstap i løpet av denne tiden. Both slurries are storage-stable for at least four months and show no loss of activity during this time.
Eksempel 2 Example 2
Våtsprøytebetong med 425 kg/m^ Portlandsement og maksimal kornstørrelse på 8 mm ble anvendt i en tettstrømfremgangsmåte. Som betongpumpe ble det anvendt et Aliva 277 aggregat. Som sammenligning ble to slurryer og en kommersielt oppnåelig flytende alkali-aluminaf-hydroksid/karbonat akselerator anvendt (Sigunit). Wet shotcrete with 425 kg/m^ Portland cement and maximum grain size of 8 mm was used in a dense flow process. An Aliva 277 unit was used as a concrete pump. For comparison, two slurries and a commercially available liquid alkali-alumina-hydroxide/carbonate accelerator were used (Sigunit).
Også i våtsprøjtretettsrørmfremgangsmåten medfører tilsats av gips en betydelig forbedring av trykkstyrke. Also in the wet-spray reinforced pipe method, the addition of gypsum leads to a significant improvement in compressive strength.
Eksempel 3 Example 3
Utvaskingsforholdene ble bestemt som følger: The leaching conditions were determined as follows:
Fra sprøytebetongforsøkene i eksempel 2 ble det tatt ut 95 mm borkjerner, snittet i 10 mm tynne skiver og undersøkt etter 28 dagers utherding med hensyn på eluerbare andeler. Metoden er overtatt fra Technischen Universitat Milnchen, Ihstitut fur Bau-ingenieurwesen n, Leitung Prof. Dr. R. Springenschmid. 6% av innkjøpt flytende kaliumaluminat/kaliumhydroksid/kaliumkarbonat-akselerator (Sigunit) fra eksempel 2 ga følgende eluatkonsentrasjoner: 6% av de flytende akseleratoren ifølge oppfinnelsen (slurry D) fra eksempel 2 ga følgende eluatkonsentrasjoner: From the shotcrete tests in example 2, 95 mm drill cores were taken out, cut into 10 mm thin slices and examined after 28 days of curing with regard to eluable proportions. The method is adopted from the Technischen Universitat Milnchen, Ihstitut fur Bau-ingenieurwesen n, Leitung Prof. Dr. R. Springenschmid. 6% of purchased liquid potassium aluminate/potassium hydroxide/potassium carbonate accelerator (Sigunit) from example 2 gave the following eluate concentrations: 6% of the liquid accelerator according to the invention (slurry D) from example 2 gave the following eluate concentrations:
Claims (17)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH134195 | 1995-05-09 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO961799D0 NO961799D0 (en) | 1996-05-03 |
| NO961799L NO961799L (en) | 1996-11-11 |
| NO319145B1 true NO319145B1 (en) | 2005-06-27 |
Family
ID=4208218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO19961799A NO319145B1 (en) | 1995-05-09 | 1996-05-03 | Alkali-free liquid bonding and curing accelerator for cement, method for accelerating bonding and curing of cement and use of the accelerator |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0742179B1 (en) |
| AT (1) | ATE185540T1 (en) |
| DE (1) | DE59603322D1 (en) |
| DK (1) | DK0742179T3 (en) |
| ES (1) | ES2139272T3 (en) |
| GR (1) | GR3032188T3 (en) |
| NO (1) | NO319145B1 (en) |
| TR (1) | TR199600377A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PT946451E (en) † | 1996-10-25 | 2001-02-28 | Bk Giulini Chem Gmbh & Co Ohg | SOLIDIFICATION AND HARDENING ACCELERATOR FOR HYDRAULIC BINDING AGENTS |
| EP0858981A1 (en) * | 1997-02-14 | 1998-08-19 | Sika AG, vorm. Kaspar Winkler & Co. | Hardening accelerator for cement |
| FR2792629B1 (en) * | 1999-04-26 | 2001-06-29 | Rhodia Chimie Sa | PROCESS FOR THE PREPARATION OF A LIQUID SETTING ACCELERATOR FOR A HYDRAULIC BINDER |
| AU2005201416B2 (en) * | 1999-12-08 | 2006-10-12 | Construction Research & Technology Gmbh | Preparation of Concrete Accelerator |
| GB9928977D0 (en) | 1999-12-08 | 2000-02-02 | Mbt Holding Ag | Process |
| PT1167317E (en) * | 2000-06-21 | 2004-04-30 | Sika Schweiz Ag | NON-ALKALINE PRESSURE AND HARDNESS ACCELERATOR |
| ES2228354T3 (en) * | 2000-06-21 | 2005-04-16 | Sika Schweiz Ag | ACCELERATING PEOPLE OF THE FRAGUADO AND THE STRENGTH, EXEMPT FROM SULFATES AND ALCALIS. |
| GB0128438D0 (en) | 2001-11-28 | 2002-01-16 | Mbt Holding Ag | Method |
| GB0223875D0 (en) * | 2002-10-15 | 2002-11-20 | Bpb Plc | Method and apparatus for producing a multilayer cementitious product |
| DE102004016127B8 (en) * | 2004-03-26 | 2006-02-09 | Rombold & Gfröhrer GmbH & Co. KG | A method for accelerating the setting of a cement two-component setting accelerator and its use |
| US8016960B2 (en) | 2005-04-27 | 2011-09-13 | United States Gypsum Company | Methods of and systems for adding a high viscosity gypsum additive to a post-mixer aqueous dispersion of calcined gypsum |
| CN109020292B (en) * | 2018-08-16 | 2020-04-10 | 科之杰新材料集团有限公司 | Preparation method of environment-friendly enhanced alkali-free liquid accelerator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51144425A (en) * | 1975-06-06 | 1976-12-11 | Onoda Cement Co Ltd | Cement setup accelerating agent |
| JPS5473825A (en) * | 1977-11-24 | 1979-06-13 | Shinichi Suzuki | Production of cement blending agent |
| CH648272A5 (en) * | 1981-10-12 | 1985-03-15 | Sika Ag | ALKALIF-FREE SETTING AND HARDENING ACCELERATOR AND METHOD FOR ACCELERATING THE SETTING AND HARDENING OF A HYDRAULIC BINDING AGENT. |
| CH667096A5 (en) * | 1985-11-22 | 1988-09-15 | Sika Ag | METHOD FOR PRODUCING A BUILDING AND / OR CONSTRUCTION MATERIAL. |
| US5340612A (en) * | 1992-04-16 | 1994-08-23 | W.R. Grace & Co.-Conn. | Sprayable portland cement-based fireproofing compositions |
-
1996
- 1996-04-25 DK DK96106500T patent/DK0742179T3/en active
- 1996-04-25 ES ES96106500T patent/ES2139272T3/en not_active Expired - Lifetime
- 1996-04-25 DE DE59603322T patent/DE59603322D1/en not_active Expired - Lifetime
- 1996-04-25 AT AT96106500T patent/ATE185540T1/en active
- 1996-04-25 EP EP96106500A patent/EP0742179B1/en not_active Expired - Lifetime
- 1996-05-03 NO NO19961799A patent/NO319145B1/en not_active IP Right Cessation
- 1996-05-08 TR TR96/00377A patent/TR199600377A1/en unknown
-
1999
- 1999-12-17 GR GR990403274T patent/GR3032188T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ATE185540T1 (en) | 1999-10-15 |
| GR3032188T3 (en) | 2000-04-27 |
| ES2139272T3 (en) | 2000-02-01 |
| NO961799D0 (en) | 1996-05-03 |
| DE59603322D1 (en) | 1999-11-18 |
| DK0742179T3 (en) | 2000-04-10 |
| TR199600377A1 (en) | 1996-11-21 |
| EP0742179B1 (en) | 1999-10-13 |
| EP0742179A1 (en) | 1996-11-13 |
| NO961799L (en) | 1996-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI411592B (en) | Quick - setting agents and their use of spray construction | |
| US6869987B2 (en) | Cementitious compositions and a method of their use | |
| US5560774A (en) | Process for accelerating the setting and hardening of material which contains a hydraulic binder, setting and hardening accelerator and use of a mixture for accelerating the setting and hardening | |
| US20020023574A1 (en) | Sulfate-free and alkali-free setting and hardening accelerator | |
| CN108137425A (en) | Load value is increased in anchoring is applied based on the bicomponent mortar system that alumina cement includes calcium sulfate and reduces the purposes shunk | |
| NO319145B1 (en) | Alkali-free liquid bonding and curing accelerator for cement, method for accelerating bonding and curing of cement and use of the accelerator | |
| CA2333340A1 (en) | Efficient catalyst for the set acceleration of plaster | |
| AU2016342205A1 (en) | Stabilized aqueous suspension for initiating setting and hardening of aluminous cement compositions | |
| CA2526948C (en) | Admixture for sprayable cement compositions | |
| EP0402319B1 (en) | Admixture for concrete mixes | |
| EP0858981A1 (en) | Hardening accelerator for cement | |
| US6514327B1 (en) | Stabilized setting and hardening accelerator of low viscosity | |
| AU2014356413B2 (en) | Flowable concrete with secondary accelerator | |
| JPH1045441A (en) | Cement for high strength spray concrete and high strength spray concrete | |
| JP4937541B2 (en) | Shotcrete production apparatus, shotcrete production method using the same, and shotcrete | |
| JP2018104982A (en) | Construction method of spray concrete | |
| JPH11335152A (en) | Cement-based material and its spray application | |
| JP2000302506A (en) | Accelerator slurry, spraying material and method of spraying using the same | |
| JP2005035856A (en) | Spray material and spraying method of construction using the same | |
| JPH11130500A (en) | Curing accelerating assistant material for spraying material | |
| JP2001302323A (en) | Shotcrete material and shotcrete method | |
| JP3931945B2 (en) | Method for producing quick setting concrete for prelining | |
| JPS629155B2 (en) | ||
| WO2021156808A1 (en) | Activator for a slag cement based shotcrete | |
| JPH06263498A (en) | Setting retarder and method for placing quick-setting concrete using the retarder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM1K | Lapsed by not paying the annual fees |