SK11172000A3 - Rapid hardening binder mixture and method for controlling the early strength of binder mixture - Google Patents
Rapid hardening binder mixture and method for controlling the early strength of binder mixture Download PDFInfo
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- SK11172000A3 SK11172000A3 SK1117-2000A SK11172000A SK11172000A3 SK 11172000 A3 SK11172000 A3 SK 11172000A3 SK 11172000 A SK11172000 A SK 11172000A SK 11172000 A3 SK11172000 A3 SK 11172000A3
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- 239000011230 binding agent Substances 0.000 title claims abstract description 69
- 239000000203 mixture Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000011161 development Methods 0.000 claims abstract description 28
- 239000003513 alkali Substances 0.000 claims abstract description 23
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 21
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 20
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 11
- 229910000027 potassium carbonate Inorganic materials 0.000 claims abstract description 10
- 239000011398 Portland cement Substances 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 3
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims description 15
- 239000004568 cement Substances 0.000 claims description 15
- 239000011734 sodium Substances 0.000 claims description 13
- 235000013339 cereals Nutrition 0.000 claims description 12
- 229920001732 Lignosulfonate Polymers 0.000 claims description 10
- 235000012054 meals Nutrition 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 8
- 238000007711 solidification Methods 0.000 claims description 7
- 230000008023 solidification Effects 0.000 claims description 7
- 239000000654 additive Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 5
- 235000013312 flour Nutrition 0.000 claims description 5
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 229920005610 lignin Polymers 0.000 claims description 4
- 239000004014 plasticizer Substances 0.000 claims description 4
- 125000000542 sulfonic acid group Chemical group 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 claims description 2
- 239000010881 fly ash Substances 0.000 claims description 2
- 230000000979 retarding effect Effects 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 claims 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract description 11
- 239000011435 rock Substances 0.000 abstract 1
- 239000004570 mortar (masonry) Substances 0.000 description 7
- 239000011575 calcium Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 229940043430 calcium compound Drugs 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- -1 that is Substances 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical class O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 150000001674 calcium compounds Chemical class 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 description 1
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 1
- 235000019256 formaldehyde Nutrition 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000000887 hydrating effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical class C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 235000019976 tricalcium silicate Nutrition 0.000 description 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 1
Classifications
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- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/10—Acids or salts thereof containing carbon in the anion
-
- 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
- C04B40/0032—Controlling the process of mixing, e.g. adding ingredients in a quantity depending on a measured or desired value
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/48—Clinker treatment
- C04B7/52—Grinding ; After-treatment of ground cement
- C04B7/527—Grinding ; After-treatment of ground cement obtaining cements characterised by fineness, e.g. by multi-modal particle size distribution
-
- 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
- C04B2111/1018—Gypsum free or very low gypsum content cement compositions
Abstract
Description
Oblasť technikyTechnical field
Vynález sa týka rýchlotvrdnúcej hydraulickej spojivovej zmesi a spôsobu riadenia skorej pevnosti spojivovej zmesi.The invention relates to a fast setting hydraulic binder composition and a method for controlling the early strength of the binder composition.
Doterajší stav technikyBACKGROUND OF THE INVENTION
Hydraulické systémy spojív z múčok slinku portlandského cementu bez sulfátových nosičov s plastifikátormi na reguláciu tuhnutia sú známe. Pri takýchto systémoch spojív stojí v popredí extrémne vysoká pevnosť vo veľmi krátkom čase, najmä už od 2 hodín. Tieto skoré pevnosti sú veľmi výhodné na formulovanie špeciálnych mált a betónov na účely opráv.Hydraulic binder systems from Portland cement clinker flours without sulfate carriers with solidification control plasticizers are known. With such binder systems, extremely high strength is at the forefront in a very short time, especially from 2 hours. These early strengths are very advantageous for formulating special mortars and concrete for repair purposes.
Z “Baustoffindustrie 1990” (“Priemysel stavebných látok 1990”), str. 104 až 107, je známe, že sa pri takýchto systémoch spojív kombináciou lignínsulfonátov a alkalických uhličitanov účinne spomaľuje tuhnutie slinkovej múčky na báze slinku portlandského cementu bez obsahu sadry. Ďalej je známe čiastočné alebo úplné nahradzovanie lignínsulfonátov inými plastifikátormi, ako napríklad kondenzačnými produktami sulfonovaných fenolov a formaldehydov, soľami naftalénsulfónových kyselín, a alkalických uhličitanov alkalickými hydroxidmi.From “Baustoffindustrie 1990” (“Building Materials Industry 1990”), p. 104-107, it is known that in such binder systems, the combination of lignosulfonates and alkali carbonates effectively retards the setting of the gypsum-free Portland cement clinker meal. Furthermore, it is known to partially or completely replace lignin sulfonates with other plasticizers, such as the condensation products of sulfonated phenols and formaldehydes, salts of naphthalenesulfonic acids, and alkali carbonates with alkali hydroxides.
Mechanizmy pôsobenia alkalických uhličitanov v spojivových zmesiach z múčky slinku portlandského cementu bez sulfátového nosiča a z lignínsulfonátov a alkalických uhličitanov sú opísané v “Cement and Concrete Research” (“Výskum cementu a betónu), zv. 3, strany 279 až 293, Pergamon Press, Inc. 1973. Po styku cementu s vodou sa roztok nasýti hydroxidom vápenatým [Ca(OH)2]. Najväčšie množstvo hydroxidu vápenatého vzniká rýchlou reakciou trikalciumsilikátu (C3S). Pretože cement trvalé obsahuje určité podiely alkálií (Na2O, K2O), pH-hodnota cementového roztoku je vždy vyššia než pH-hodnota nasýteného roztoku hydroxidu vápenatého. Alkálie sa rozpustia a vytvoria OH-ióny. V rýchlotvrdnúcich spojivách na báze bezsulfátových slinkových múčok a alkalických uhličitanov pochádzajú OHMechanisms of action of alkali carbonates in binder mixtures from Portland cement clinker flour without sulfate carrier and from lignin sulfonates and alkali carbonates are described in “Cement and Concrete Research”, Vol. 3, pp. 279-293, Pergamon Press, Inc. 1973. After contacting the cement with water, the solution is saturated with calcium hydroxide [Ca (OH) 2 ]. The largest amount of calcium hydroxide is produced by the rapid reaction of tricalcium silicate (C 3 S). Since the cement permanently contains certain proportions of alkali (Na 2 O, K 2 O), the pH value of the cement solution is always higher than the pH value of the saturated calcium hydroxide solution. The alkalis dissolve to form OH ions. OH comes from quick-setting binders based on sulphate-free clinker meal and alkali carbonates
-2-ióny z reakcie s Ca(OH)2 na uhličitan. Uhličitan v glejive z bezsulfátovej slinkovej múčky má podobný, resp. rovnaký vplyv ako sadra v bežných pastách z bežného portlandského cementu, teda cementu, ktorý sa získal spoločným zomletím slinku portlandského cementu a sulfátového nosiča. Namiesto sulfoaluminátu sa na povrchu trikalciumaluminátu (C3A) tvoria iné rýchlo hydratujúce cementové zložky, kalciumkarboalumináty. Kalciumkarboalumináty tvoria ochrannú vrstvu okolo C3A a zabraňujú jeho rýchlej ďalšej hydratácii. Popri tvorbe kalciumkarboaluminátov majú alkalické uhličitany ešte dva ďalšie vplyvy. Po prvé alkálie zvyšujú rýchlosť hydratácie. Podiely alkálií v alkalických uhličitanoch tvoria alkalické hydroxidy, ktoré znižujú rozpustnosť hydroxidu vápenatého, t. j. uhličitanový ión pôsobí ako spomaľovač a alkalický ión ako urýchľovač. Tretí efekt alkalických uhličitanov je spojený s lignínsulfonátom. Bez alkalického uhličitanu lignínsulfonát veľmi rýchlo vypadáva z roztoku, pretože v kvapalnej fáze hydratovaného cementu existuje dostatok Ca2+-iónov, ktoré môžu reagovať s lignínsulfonátmi. Ako sme už opísali, alkalickými uhličitanmi produkované OH-ióny, ktoré znižujú koncentráciu Ca2+-iónov v roztoku, takto spôsobia, že lignínsulfonát nebude vypadávať. Nevypadnutý lignínsulfonát sa takto môže adsorbovať na povrchu cementnových zŕn.-2-ions from reaction with Ca (OH) 2 to carbonate. Sulfate-free clinker flour carbonate has a similar, respectively. the same effect as gypsum in conventional pastes of conventional Portland cement, that is, cement obtained by grinding together the Portland cement clinker and the sulfate carrier. Instead of sulfoaluminate, other rapidly hydrating cementitious components, calciumcarboaluminates, are formed on the tricalciumaluminate (C 3 A) surface. Calcium carboaluminates form a protective layer around C 3 A and prevent its rapid further hydration. In addition to the formation of calcium carboaluminates, alkali carbonates have two other effects. First, the alkali increases the rate of hydration. The proportions of alkali in alkali carbonates form alkali hydroxides that reduce the solubility of calcium hydroxide, ie the carbonate ion acts as a retarder and the alkali ion as an accelerator. The third effect of the alkali carbonates is associated with lignosulfonate. Without alkali carbonate, the lignin sulfonate falls out of solution very quickly because there is sufficient Ca 2+ -ions in the liquid phase of the hydrated cement that can react with the lignin sulfonates. As already described, the OH-ions produced by the alkali carbonates, which reduce the concentration of Ca 2+ -ions in the solution, thus cause the lignin sulphonate to not fall out. Thus, the non-precipitated lignosulfonate can adsorb on the surface of the cement grains.
V EP 0 517 869 B1 sa na zvýšenie pevnosti používajú donor uhličitanov a najmenej jedna zlúčenina, vytvárajúca komplexy so železom. Ako donor uhličitanov sú vhodné vo vode rozpustné soli kyseliny uhličitej. Celkom všeobecne sa ako donory uhličitanov, resp. generátory uhličitanov môžu použiť zlúčeniny, ktoré v alkalickom vodnom prostredí uvoľňujú uhličitanové ióny alebo reagujú s reaktívnymi zlúčeninami vápnika na uhličitan vápenatý a/alebo na zlúčeniny, ktoré obsahujú uhličitan vápenatý (karboaluminát, karboaluminoferit, taumazit, karboaluminosilikát atď.).In EP 0 517 869 B1, a carbonate donor and at least one iron-complexing compound are used to increase the strength. Water-soluble salts of carbonic acid are suitable as the carbonate donor. Generally, as carbonate donors, resp. carbonate generators can use compounds that release carbonate ions in an alkaline aqueous environment or react with reactive calcium compounds to form calcium carbonate and / or compounds that contain calcium carbonate (carboaluminate, carboaluminoferite, taumazite, carboaluminosilicate, etc.).
Úlohou tohto vynálezu je vytvoriť spojivovú zmes, ktorej skorá pevnosť, najmä v rámci vopred stanoveného časového okna do 24 hodín, a pevnostný interval použiteľnosti sú premenlivo nastaviteľné.It is an object of the present invention to provide a binder composition whose early strength, especially within a predetermined time window of up to 24 hours, and the shelf life are variable adjustable.
-3Podstata vynálezu3. Summary of the Invention
Podstatou vynálezu je rýchlotvrdnúca spojivová zmes, vykazujúca hydraulickú spojivovú zložku bez sulfátového nosiča, najmä zomletú bez sulfátového nosiča, a zložku na urýchlenie tvrdnutia, ktorá na riadenie skorej pevnosti a vývoja skorej pevnosti obsahuje pridané tak uhličitan sodný, ako aj uhličitan draselný v pomeroch, prispôsobených príslušnému prípadu použitia.SUMMARY OF THE INVENTION The present invention provides a quick curing binder composition having a hydraulic binder component without a sulfate carrier, in particular ground without a sulfate carrier, and a cure acceleration component comprising both sodium carbonate and potassium carbonate in proportions adapted to control early strength and early strength development. relevant use case.
Spojivová zmes podľa vynálezu na riadenie začiatku vývoja skorej pevnosti môže obsahovať pridanú zložku, ktorá spomaľuje začiatok tuhnutia.The binder composition of the invention for controlling the onset of early strength development may comprise an added component that retards the onset of solidification.
Spojivová zmes podľa vynálezu obsahuje 0,1 až 10 % hmotn. alkalických uhličitanov a 0,05 až 5 % hmotn. spomaľujúcej zložky.The binder composition according to the invention contains 0.1 to 10 wt. % of alkali carbonates and 0.05 to 5 wt. slowing component.
Jemnosť, ako aj rozdelenie zŕn hydraulickej spojivovej zložky sú nastavené na požadovanú pevnosť a vývoj pevnosti zmesi.The fineness as well as the grain distribution of the hydraulic binder component are adjusted to the desired strength and strength development of the mixture.
Spojivová zložka vykazuje múčku slinku portlandského cementu, najmä v množstvách od 25 do 99,7 % hmotn., vztiahnuté na spojivovú zmes.The binder component has Portland cement clinker meal, in particular in amounts of from 25 to 99.7% by weight, based on the binder mixture.
Podľa iného uskutočnenia vynálezu spojivová zložka vykazuje hlinitanový cement a/alebo puzolánové a/alebo skryto hydraulické látky, ako je múčka z vysokopecnej trosky alebo popolček, najmä v množstvách od 0 do 30 % hmotn., vztiahnuté na spojivovú zmes.According to another embodiment of the invention, the binder component comprises aluminous cement and / or pozzolanic and / or hidden hydraulic substances, such as blast furnace slag or fly ash meal, in particular in amounts of 0 to 30% by weight, based on the binder mixture.
V inom uskutočnení spojivová zmes vykazuje plnivá, ako je kamenná múčka a/alebo vysokodisperzná kyselina kremičitá, najmä v množstvách od 0 do 30 % hmotn., vztiahnuté na spojivovú zmes.In another embodiment, the binder composition comprises fillers such as stone meal and / or high disperse silicic acid, in particular in amounts of from 0 to 30% by weight, based on the binder composition.
Ďalej môže spojivová zmes obsahovať plastifikátor.Further, the binder composition may comprise a plasticizer.
Zložka, ktorá spomaľuje tuhnutie, vykazuje plastifikačný účinok a môže ňou byť zložka, ktorá vykazuje skupiny kyseliny sulfónovej, ako je napríklad lignínsulfonát.The solidification retarding component exhibits a plasticizing effect and may be a component having sulfonic acid groups such as lignin sulfonate.
Ďalej spojivová zmes môže obsahovať prísady a/alebo prímesi, ktoré sú ako také známe.Further, the binder mixture may contain additives and / or additives which are known per se.
Výhodné ďalšie varianty sú charakterizované v závislých nárokoch.Preferred further variants are characterized in the dependent claims.
Spojivová zmes podľa tohto vynálezu vykazuje ako podiel spojiva múčku slinku portlandského cementu bez sulfátového nosiča. Na regulovanie tuhnutia aThe binder composition of the present invention exhibits Portland cement clinker flour without a sulfate carrier as the binder fraction. To control solidification a
-4tvrdnutia sa používajú lignínsulfonáty a alkalické uhličitany. Ako alkalické uhličitany sa používajú uhličitan sodný a draselný v ľubovoľných pomeroch zmiešania podľa zadania úlohy.-4-curing, lignin sulfonates and alkali carbonates are used. The alkali carbonates used are sodium and potassium carbonate in any mixing ratios according to the task.
Vynález ďalej poskytuje spôsob riadenia skorej pevnosti a priebehu skorej pevnosti spojivovej zmesi, najmä spojivovej zmesi podľa vynálezu, v ktorom na riadenie vopred stanovenej požadovanej skorej pevnosti a vopred stanoveného vývoja pevnosti sa k spojivovej zmesi pridá zmes urýchľovačov tvrdnutia z uhličitanu sodného a uhličitanu draselného, pričom na urýchlenie vývoja skorej pevnosti sa zvýši podiel uhličitanu draselného na úkor uhličitanu sodného v zmesi.The invention further provides a method for controlling the early strength and course of the early strength of a binder composition, in particular a binder composition of the invention, wherein a mixture of cure accelerators of sodium carbonate and potassium carbonate is added to the binder composition to control a predetermined desired early strength and predetermined strength development. to accelerate the development of early strength, the proportion of potassium carbonate is increased at the expense of the sodium carbonate in the mixture.
Prekvapujúco sa zistilo, že zmenou pomeru uhličitanu draselného k uhličitanu sodnému sa skorá pevnosť spojivovej pasty dá meniť v širokom rozsahu, najmä prispôsobiť ju príslušnému účelu použitia. Vývoj pevnosti namiešanej spojivovej zmesi sa takto dá cielene nastaviť už pri výrobe zodpovedajúcou zmesou uhličitanu sodného a draselného, pričom vývoj pevnosti sa najmä v oblasti od 2 do 24 hodín dá riadiť pomerom týchto alkalických uhličitanov. Pritom sa pri vopred určenej zmesi, resp. pri vopred danej zložke spojiva a pri vopred stanovenom rozsahu skorej pevnosti na riadenie priebehu skorej pevnosti a skorej pevnosti udržiava Na2O-ekvivalent - nastavený na tieto parametre - konštantný a mení sa len pomer K2CO3/(K2CO3 + Na2CO3) v rámci tohto konštantného Na2O-ekvivalentu. Okrem toho sa doba spracovania dá nastaviť ďalšími prísadami, ako je lignínsulfonát, vnútri ohraničeného časového okna na skoršie časy bez trvalej straty pevnosti. Taktiež je vytvorená široká variabilita, čo sa týka začiatku pevnosti a veľkosti pevnosti pasty. Ďalšia možnosť ovplyvnenia, čo sa týka vývoja pevnosti a začiatku vývoja pevnosti, spočíva v jemnosti použitej spojivovej zložky. Okrem toho sa tieto parametre dajú riadiť aj tým, že sa podiel spojiva, v tomto prípade slinkovej múčky, zmieša z rozličných frakcií zŕn vždy jednotlivo pre daný prípad použitia.Surprisingly, it has been found that by varying the ratio of potassium carbonate to sodium carbonate, the early strength of the binder paste can be varied over a wide range, in particular tailored to the particular application. The strength development of the mixed binder mixture can thus be adjusted in a targeted manner already in the production with the corresponding mixture of sodium and potassium carbonate, the strength development particularly in the range of 2 to 24 hours being controlled by the ratio of these alkali carbonates. In this case, in the case of a predetermined mixture, respectively. at a predetermined binder component and at a predetermined range of early strength to control early strength and early strength, the Na 2 O equivalent - set to these parameters - keeps constant and only the K 2 CO 3 / (K 2 CO 3 + Na ratio) changes 2 CO 3 ) within this constant Na 2 O-equivalent. In addition, the processing time can be adjusted by other additives, such as lignin sulphonate, within the limited time window for earlier times without permanent loss of strength. There is also a wide variation in the strength of the paste and the strength of the paste. A further possibility of influencing the strength development and the beginning of the strength development lies in the fineness of the binder component used. In addition, these parameters can also be controlled by mixing the binder fraction, in this case the clinker meal, from the various grain fractions individually for each application.
Prehľad obrázkov na výkresochBRIEF DESCRIPTION OF THE DRAWINGS
Na obr. 1 je znázornený vývoj pevnosti betónu s rýchlocementom.In FIG. 1 shows the development of strength of a concrete with a quick-cement.
-5Na obr. 2 je znázornený vývoj pevnosti v tlaku pri príkladnej malte pri 20 °C do 24 hodín v závislosti od pomeru K2CO3/(K2CO3 + Na2CO3) v spojive.FIG. 2 shows the development of compressive strength at an exemplary mortar at 20 ° C for up to 24 hours, depending on the ratio of K 2 CO 3 / (K 2 CO 3 + Na 2 CO 3) in a binder.
Na obr. 3 je znázornený vývoj pevnosti v tlaku pri príkladnej malte pri 20 °C do 90 dní v závislosti od pomeru K2CO3/(K2CO3 + Na2CO3) v spojive.In FIG. 3 shows the development of compressive strength of an exemplary mortar at 20 ° C to 90 days depending on the K 2 CO 3 / (K 2 CO 3 + Na 2 CO 3 ) ratio in the binder.
Na obr. 4 je znázornený vývoj pevnosti v tlaku pri príkladnej malte pri 20 °C do 24 hodín v závislosti od pomeru K2CO3/(K2CO3 + Na2CO3) v spojive.In FIG. 4 shows the development of compressive strength at an exemplary mortar at 20 ° C for up to 24 hours, depending on the ratio of K 2 CO 3 / (K 2 CO 3 + Na 2 CO 3) in a binder.
Na obr. 5 je znázornený vývoj pevnosti v tlaku pri príkladnej malte pri 20 °C do 90 dní v závislosti od pomeru K2CO3/(K2CO3 + Na2CO3).In FIG. 5 shows the development of compressive strength of an exemplary mortar at 20 ° C to 90 days depending on the ratio of K 2 CO 3 / (K 2 CO 3 + Na 2 CO 3 ).
Príklady uskutočnenia vynálezuDETAILED DESCRIPTION OF THE INVENTION
Na obr. 1 sa dá napríklad vidieť oblasť, ktorá je ohraničená oboma alkalickými uhličitanmi a vnútri ktorej sa zmena pevnosti môže uskutočniť.In FIG. 1, for example, one can see an area which is bounded by both alkali carbonates and within which a change in strength can take place.
Zodpovedajúce krivky sa pritom zistili tak, že sa špeciálny cement z 97,7 % slinkovej múčky s jemnosťou D95 < 12,5 gm a 0,3 % lignínsulfonátu zmiešalo v jednom prípade s 2 % uhličitanu sodného a v druhom prípade s 3,04 % uhličitanu draselného, pričom sa 450 kg/m3 špeciálneho cementu zmiešalo s 1973 kg/m3 prísady, pozostávajúcej z 35 % veľkosti zŕn 0 až 2, 25 % veľkosti zŕn 5 až 8 a 40 % zrnitosti 8/11 pri vodnom súčiniteli 0,35.Corresponding curves were found by mixing special cement of 97.7% clinker meal with a fineness of D95 <12.5 gm and 0.3% lignin sulphonate in one case with 2% sodium carbonate and in the other case with 3.04% carbonate potassium, where 450 kg / m 3 of special cement was mixed with 1973 kg / m 3 of an additive consisting of 35% grain size 0 to 2, 25% grain size 5 to 8 and 40% grain size 8/11 at an aqueous coefficient of 0.35 .
Obr. 2 znázorňuje možnú variabilitu v dôsledku zmeny pomeru K2CO3/(K2CO3 + Na2CO3).Fig. 2 shows possible variability due to a change in the K 2 CO 3 / (K 2 CO 3 + Na 2 CO 3 ) ratio.
Rozličné krivky pritom vychádzajú z pomeru od 1 po 0. Vytvorili sa zmesi zo 450 g rýchlotuhnúceho cementu so zodpovedajúco sa meniacim zložením urýchľovača, 1350 g normalizovaného piesku a 157,5 g vody, pričom rýchlotvrdnúca hydraulická zmes vykazovala špeciálne veľkosti zŕn a fázové zloženie. Vývoj pevnosti v tlaku pri príkladnej malte je do 24 hodín znázornený na obr. 2 a do 90 dní na obr. 3. V tomto špeciálnom prípade boli fázové a zrnitostné zloženie cementu nastavené na spracovateľnosť v rozsahu 60 minút.The various curves are based on a ratio of from 1 to 0. Mixtures of 450 g of quick setting cement with correspondingly varying accelerator compositions, 1350 g of standard sand and 157.5 g of water were formed, the quick-setting hydraulic mixture having special grain sizes and phase composition. The development of compressive strength in an exemplary mortar is shown in FIG. 2 and within 90 days of FIG. 3. In this special case, the phase and granular composition of the cement was set to a workability within 60 minutes.
-6V ďalšom pokuse sa zvolila rýchlotvrdnúca hydraulická zmes s rozdelením veľkosti častíc, resp. zložením frakcií a fázovým zložením, ktoré zabezpečuje spracovateľnosť do asi 10 minút. Následne táto zmes vyvinie najmä v oblasti od 4 do 24 hodín rozlične rýchlo vysoké pevnosti, ktoré závisia od pomeru alkalických uhličitanov. Pre pokus sa zmes 450 g rýchlocementu s vyššie uvedenými meniacimi sa zloženiami alkalických uhličitanov, ako aj 1350 g normalizovaného piesku zmiešalo so 157,5 g vody. Vývoj pevnosti v tlaku príkladnej malty pri 20 °C do 24 hodín je znázornený na obr. 4, pričom pomer K2CO3/(K2CO3 + Na2CO3) sa menil medzi 0 a 1. Vývoj pevnosti v tlaku až do 90 dní po príprave je znázornený na obr.In a further experiment, a fast-hardening hydraulic compound having a particle size distribution, respectively, was selected. a fraction composition and a phase composition that provides workability within about 10 minutes. Consequently, this mixture develops, in particular in the region of 4 to 24 hours, of different fast high strengths, which depend on the ratio of alkali carbonates. For the experiment, a mixture of 450 g of quick-cement with the above-mentioned varying alkali carbonate compositions as well as 1350 g of standard sand was mixed with 157.5 g of water. The development of the compressive strength of an exemplary mortar at 20 ° C within 24 hours is shown in FIG. 4, wherein the ratio of K 2 CO 3 / (K 2 CO 3 + Na 2 CO 3 ) varied between 0 and 1. The development of compressive strength up to 90 days after preparation is shown in FIG.
5.5th
Pri hydraulickej spojivovej zmesi podľa tohto vynálezu je výhodné, že skorá pevnosť, najmä priebeh skorej pevnosti, ako aj začiatok vývoja skorej pevnosti sa dajú jednotlivo nastaviť v širokom časovom rámci do 24 hodín a v širokom rozsahu pevností v súlade s oblasťou použitia a požiadavkami zákazníka. Naviac sa vývoj pevnosti dá regulovať rozdelením veľkosti častíc, resp. jemnosťou použitej spojivovej zložky a jej fázovým zložením.In the hydraulic binder composition of the present invention, it is advantageous that the early strength, in particular the early strength course, as well as the onset of early strength development can be individually adjusted within a wide time frame within 24 hours and a wide strength range in accordance with the field of use and customer requirements. In addition, the development of strength can be controlled by particle size distribution, resp. the fineness of the binder component used and its phase composition.
Claims (17)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19936093A DE19936093C2 (en) | 1999-07-30 | 1999-07-30 | Method for controlling the early strength and for controlling the early strength development of a binder mixture free of sulfate carrier |
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| SK11172000A3 true SK11172000A3 (en) | 2001-02-12 |
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| SK1117-2000A SK11172000A3 (en) | 1999-07-30 | 2000-07-25 | Rapid hardening binder mixture and method for controlling the early strength of binder mixture |
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| EP (1) | EP1072566B9 (en) |
| AT (1) | ATE255074T1 (en) |
| CZ (1) | CZ20002782A3 (en) |
| DE (2) | DE19936093C2 (en) |
| DK (1) | DK1072566T3 (en) |
| ES (1) | ES2209724T3 (en) |
| HU (1) | HUP0002889A2 (en) |
| PL (1) | PL341784A1 (en) |
| PT (1) | PT1072566E (en) |
| SK (1) | SK11172000A3 (en) |
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| DE10164824B4 (en) * | 2001-04-04 | 2006-03-02 | Dyckerhoff Ag | Use of a mass of water and a binder mixture in the refractory range |
| EP1375027A3 (en) * | 2001-04-04 | 2005-06-08 | Dyckerhoff AG | Use of a mixture of water and binder for producing refractory products |
| DE10116849C2 (en) * | 2001-04-04 | 2003-12-24 | Dyckerhoff Ag | Use of a hydraulic binder mixture for a metal casting process |
| DE102004014806B4 (en) * | 2004-03-24 | 2006-09-14 | Daimlerchrysler Ag | Rapid technology component |
| DE102004032529A1 (en) * | 2004-07-06 | 2006-02-02 | Pci Augsburg Gmbh | Use of a binder mixture for the formulation of cementitious mortar systems |
| DE102006038743A1 (en) | 2006-08-17 | 2008-02-21 | Pci Augsburg Gmbh | Use of a solid composition comprising a sulfate-carrier-free Portland cement clinker flour, a cement restrainer, a cellulose ether and optionally further components, for the production of tile adhesives |
| DE102019213361A1 (en) | 2019-09-03 | 2021-03-04 | Xella Technologie- Und Forschungsgesellschaft Mbh | Process for the production of hydrothermally hardened porous or foamed concrete molded bodies and porous or foamed concrete molded bodies produced by means of the process |
| EP3995470A1 (en) | 2020-11-10 | 2022-05-11 | HeidelbergCement AG | Concrete elements and method for manufacturing them |
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| GB1525653A (en) * | 1975-05-12 | 1978-09-20 | Degussa | Process for the production of cyanogen chloride |
| US4066469A (en) * | 1975-06-04 | 1978-01-03 | The Associated Portland Cement Manufacturers Limited | Rapid hardening cement |
| DE2820067A1 (en) * | 1977-05-10 | 1978-11-23 | Coal Industry Patents Ltd | ACCELERATING EQUIPMENT TO ACCELERATE THE CURING OF CEMENT AND METHODS AND MATERIALS FOR FILLING CAVITY IN UNDERGROUND CONSTRUCTION |
| DE3543210A1 (en) * | 1985-12-06 | 1987-06-11 | Sicowa Verfahrenstech | FASTER-HARDENING Binder Mix |
| CS270602B1 (en) * | 1987-05-25 | 1990-07-12 | Hrazdira Jaroslav | Method for concrete mixture without gypsum preparation |
| ES2158718T3 (en) * | 1998-11-25 | 2001-09-01 | Dyckerhoff Ag | COMPOSITION OF HYDRAULIC BINDING AGENT, AS WELL AS ITS USE. |
| DE19854477C2 (en) * | 1998-11-25 | 2002-03-14 | Dyckerhoff Ag | Fastest-setting hydraulic binder composition and its use |
-
1999
- 1999-07-30 DE DE19936093A patent/DE19936093C2/en not_active Expired - Lifetime
-
2000
- 2000-06-28 EP EP00113681A patent/EP1072566B9/en not_active Revoked
- 2000-06-28 DE DE50004540T patent/DE50004540D1/en not_active Revoked
- 2000-06-28 AT AT00113681T patent/ATE255074T1/en active
- 2000-06-28 DK DK00113681T patent/DK1072566T3/en active
- 2000-06-28 ES ES00113681T patent/ES2209724T3/en not_active Expired - Lifetime
- 2000-06-28 PT PT00113681T patent/PT1072566E/en unknown
- 2000-07-25 HU HU0002889A patent/HUP0002889A2/en unknown
- 2000-07-25 SK SK1117-2000A patent/SK11172000A3/en unknown
- 2000-07-28 CZ CZ20002782A patent/CZ20002782A3/en unknown
- 2000-07-31 PL PL00341784A patent/PL341784A1/en not_active Application Discontinuation
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| ES2209724T3 (en) | 2004-07-01 |
| DK1072566T3 (en) | 2004-03-15 |
| ATE255074T1 (en) | 2003-12-15 |
| CZ20002782A3 (en) | 2001-11-14 |
| DE19936093C2 (en) | 2002-03-14 |
| DE50004540D1 (en) | 2004-01-08 |
| PT1072566E (en) | 2004-04-30 |
| HU0002889D0 (en) | 2000-10-28 |
| PL341784A1 (en) | 2001-02-12 |
| EP1072566B1 (en) | 2003-11-26 |
| EP1072566A1 (en) | 2001-01-31 |
| EP1072566B9 (en) | 2004-08-11 |
| HUP0002889A2 (en) | 2003-07-28 |
| DE19936093A1 (en) | 2001-02-08 |
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