EP3060531A1 - Sucre caramélisé comme fluidifiant pour des compositions de liant minéral - Google Patents

Sucre caramélisé comme fluidifiant pour des compositions de liant minéral

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Publication number
EP3060531A1
EP3060531A1 EP14786887.1A EP14786887A EP3060531A1 EP 3060531 A1 EP3060531 A1 EP 3060531A1 EP 14786887 A EP14786887 A EP 14786887A EP 3060531 A1 EP3060531 A1 EP 3060531A1
Authority
EP
European Patent Office
Prior art keywords
sugar
mineral binder
aggregates
caramelized sugar
use according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP14786887.1A
Other languages
German (de)
English (en)
Inventor
Christian BÜRGE
Christophe Kurz
André Peter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sika Technology AG
Original Assignee
Sika Technology AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sika Technology AG filed Critical Sika Technology AG
Priority to EP14786887.1A priority Critical patent/EP3060531A1/fr
Publication of EP3060531A1 publication Critical patent/EP3060531A1/fr
Pending legal-status Critical Current

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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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/10—Carbohydrates or derivatives thereof
    • 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
    • C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02—Treatment
    • C04B20/023—Chemical treatment
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/16—Sulfur-containing compounds
    • C04B24/18—Lignin sulfonic acid or derivatives thereof, e.g. sulfite lye
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/283—Polyesters
    • 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
    • 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
    • C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
    • 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
    • C04B2103/40—Surface-active agents, dispersants
    • C04B2103/408—Dispersants

Definitions

  • the invention relates to the use of condensers for mineral binder compositions. Furthermore, the invention relates to compositions comprising a plasticizer and a method for producing such compositions. In addition, the invention relates to a cured mineral binder composition.
  • Binder compositions such as e.g. Mortar or concrete mixtures containing, together with a binder, such as cement, usually additives.
  • aggregates typically aggregates in the form of sand and / or gravel are used.
  • organic additives e.g. Plastics such as polystyrene.
  • dispersants as plasticizers.
  • plasticizers for example, polycarboxylate-based comb polymers are known to be particularly effective dispersants. Such comb polymers have a polymer backbone and side chains attached thereto.
  • Corresponding polymers are e.g. in EP 1 138 697 A1 (Sika AG).
  • the quality of the additives has a great influence on the processability of the binder composition and the properties of the cured product.
  • Certain surcharges have a massive impact on the demand for water and fluids. These are, for example, additives with high fines, Clay minerals or aggregates obtained from recycled material, in particular crushed and washed demolition material. Compared with higher quality aggregates, eg fresh river sand or river gravel, the water and / or fluid requirements for an identical workability are drastically increased, which is undesirable.
  • the proportion of flow agent is usually increased, but this entails higher costs, which can reduce early compressive strengths, retard the setting, and can affect the quality of the cured binder composition. For example, a very high flux content can result in too harsh or rough concrete.
  • Another measure is to add more water to the binder composition. However, this leads to reduced strengths of the cured binder composition, which is also undesirable.
  • Object of the present invention is therefore to overcome the above problems.
  • a solution is to be found which allows the use of low-quality additives in mineral binder compositions with the lowest possible water and / or fluid requirements. This especially when using recycled aggregates and / or aggregates with high levels of fines and / or clays. In this case, the best possible and long-term durable processability of the mineral binder compositions sought.
  • the solution should also work as much as possible regardless of the type and quality of the aggregates.
  • caramelized sugar can significantly reduce the water requirement and / or the flow requirement in mineral binder compositions containing recycled aggregates and / or additives with high proportions of fines and / or clays.
  • a good processability of the mineral binder compositions can be achieved, which persists for a long time.
  • the present invention relates to the use of caramelized sugar as a condenser for mineral binder compositions.
  • carbamelized sugar is used herein in particular for browning products which are obtainable by heat treatment or heating of sugar.
  • it is a dry heat treatment or a dry heating. This means in particular that the heating takes place in the absence of a liquid, in particular in the absence of water.
  • sugar includes in particular monosaccharides, oligosaccharides or mixtures thereof.
  • oligosaccharides are understood as meaning saccharides which are composed of 2-10 identical or different monosaccharides (simple sugars) and linked together by glycosidic bonds are connected.
  • the caramelized sugar is in particular caramelized monosaccharides and / or caramelized oligosaccharides.
  • sugars which serve as starting materials for the preparation of the caramelized sugars monosaccharides, oligosaccharides and / or mixtures thereof can be used. These may e.g. in the form of glucose syrup, fructose, lactose, dextrose, invert sugar, sucrose, corn syrup, malt syrup, molasses and / or hydrolyzed starch. But there are other forms of sugar possible.
  • the heat treatment of the sugar takes place in particular at atmospheric pressure (1 bar) and in air or in earth's atmosphere.
  • the sugar is typically heated to temperatures of 110-180 ° C during the heat treatment.
  • the sugar is heated in particular until a brown coloration occurs.
  • the sugar is heated until caramelized sugar having the color intensities and / or hues defined below is obtained.
  • the caramelized sugar preferably has a color intensity of 0.005-0.65, in particular 0.008-0.35, preferably 0.01-0.20 or 0.025-0.09, at a wavelength of 610 nm.
  • the caramelized sugar has a color intensity of 0.01-0.70, in particular 0.03-0.45, preferably 0.05-0.30 or 0.06-0.20, at a wavelength of 560 nm.
  • the color intensity is defined as the absorbance of an aqueous solution containing 1 mg of caramelized sugar (dry substance) per 1 ml solution (total volume of the solution including caramelized sugar) at a wavelength of 610 nm and a light path of 1 cm in length.
  • Absorbance may also be referred to as optical density or absorbance and stands for -log-m (l / lo) or the negative decadic logarithm of the ratio of the intensity of the radiation (I) emanating from the sample to the intensity of in the sample entering radiation (l 0 ).
  • a hue of the caramelized sugar according to the Hue index is in particular in the range from 3.0 to 8.0, in particular 3.5 to 7.5, in particular 4.0 to 7.5, preferably 5.0 to 7.2.
  • the Hue index is defined as 10 log TM (A 510 / A 610 ), with A 510 and A 610 representing absorptions at 510 nm and 610 nm, respectively.
  • the caramelized sugar comprises or consists of caramel.
  • Caramel in the present case is for one exclusively by heating sugar, e.g. Sucrose, obtained browning product.
  • sugar e.g. Sucrose
  • browning product e.g. sucrose
  • no reaction accelerator or no further substances are used.
  • the caramelized sugar comprises sugar caramel or consists thereof.
  • a sugar caramel is a substance according to Amsterdamcs Directory No. 232-435-9 and / or CAS Registration No. 8028-89-5.
  • Sugar Coulour we are also called Caramel Color.
  • Caramel can be prepared analogously to caramel, but in the heat treatment or during caramelization usually additional reaction accelerator are added. These are e.g. Bases or acids.
  • reaction accelerators one or more substances from the group of sodium hydroxide solution, sodium sulfite, potassium sulfite, sulfurous acids, sulfite and ammonium compounds are used as reaction accelerators.
  • reaction accelerators arise differently composed Zuckercouleure.
  • the sugar egg is in particular a sugar 07 of the type INS No. 150, preferably 150a, 150b, 150c and / or 150d.
  • the guy is in accordance with the internationally accepted Codex Alimentarius of the Joint FAO / WHO Expert Committee on Food Additives defined (see eg Compendium Of Food Additive Specifications, Joint FAO / WHO Expert Committee on Food Additives, 74 th Meeting 201 1; ISBN 978-92- 5-107004-8, pages 9-20).
  • the INS number is usually preceded by the letter "E".
  • INS No. 150a corresponds to E150a in this case.
  • reaction accelerators also called simple sugar liquor, caustic soda or strong acids are used as reaction accelerators.
  • sugar caramel type INS No. 150b also referred to as sulfite-lye caramel
  • sulfite compounds for example sodium sulfite, potassium sulfite or sulfurous acids
  • sugar line of the type INS No. 150c also called ammonia Zuckercouleur
  • ammonium compounds are used as a reaction accelerator.
  • Insulated sugar type INS No. 150d also called ammonium sulfite caramel, is produced by means of sulfite and ammonium compounds.
  • sugar line of the type INS No. 150a and / or 150d is advantageous. Especially preferred is the type INS No. 150a.
  • liquefier in the present context in particular a substance which, if added to a mineral binder composition, is capable of improving the flowability or processability of the waterborne mineral binder composition. This is compared to a mineral binder composition which does not contain the plasticizer but otherwise has the same composition. The flowability or the processability is assessed in particular by the slump according to standard EN 1015-3.
  • the caramelized sugar is used in particular for improving the flowability and / or processability of the mineral binder composition.
  • the processing time of mineral binder compositions can be extended.
  • the slump of a first mineral binder composition treated with the caramelized sugar decreases less with time than the slump of a second mineral binder composition which contains no caramelized sugar, but otherwise has an identical composition to the first one mineral binder composition.
  • the caramelized sugar can therefore be used to extend the processing time of the mineral binder composition.
  • cementitious binder is in particular a binder or a binder composition in an amount of at least 5% by weight, in particular at least 20% by weight, preferably at least 35% by weight, in particular at least 65% by weight.
  • cement clinker understood.
  • the cement clinker is preferably a Portland cement clinker.
  • cement clinker is meant in the present context in particular ground cement clinker.
  • a “mineral binder composition” accordingly refers to a composition containing a mineral binder and optionally further components, such as e.g. Aggregates, water and / or additives.
  • Additives in the present context are in particular concrete admixtures and / or additives according to standard EN 934-2.
  • the mineral binder or the mineral binder composition contains a hydraulic binder, preferably cement.
  • a hydraulic binder preferably cement.
  • a cement having a cement clinker content of> 35 wt .-%.
  • the cement is of the type CEM I, CEM II and / or CEM III (according to standard EN 197-1).
  • a proportion of the hydraulic binder in the total mineral binder is advantageously at least 5 wt .-%, in particular at least 20 wt .-%, preferably at least 35 wt .-%, in particular at least 65 wt .-%.
  • the mineral binder consists of> 95 wt .-% of hydraulic binder, in particular cement clinker.
  • the binder or the binder composition contains or consists of other binders.
  • these are in particular latent hydraulic binders and / or pozzolanic Binder.
  • Suitable latent hydraulic and / or pozzolanic binders are, for example, slag, fly ash and / or silica fume.
  • the binder composition may contain inert substances such as limestone, quartz flours and / or pigments.
  • the mineral binder contains 5 to 95% by weight, in particular 5 to 65% by weight, particularly preferably 15 to 35% by weight, of latently hydraulic and / or pozzolanic binders.
  • Advantageous latent hydraulic and / or pozzolanic binders are slag and / or fly ash.
  • the mineral binder contains a hydraulic binder, in particular cement or cement clinker, and a latent hydraulic and / or pozzolanic binder, preferably slag and / or fly ash.
  • the proportion of latent hydraulic and / or pozzolanic binder is particularly preferably 5 to 65 wt .-%, particularly preferably 15 to 35 wt .-%, while at least 35 wt .-%, in particular at least 65 wt .-%, of the hydraulic Binder present.
  • a proportion of mineral binder is in particular 1 to 100 wt.%, In particular 5 to 50 wt.%, Especially 10 to 30 wt.%, Based on the total weight of the mineral binder composition.
  • the binder composition additionally contains solid aggregates, in particular gravel, sand and / or aggregates.
  • solid aggregates in particular gravel, sand and / or aggregates.
  • Corresponding binder compositions can be used, for example, as mortar mixtures or concrete mixtures.
  • the aggregates preferably have a content of 5-95% by weight, in particular 50-90% by weight, especially 60-85% by weight, based on the total weight of the mineral binder composition.
  • the aggregates have a water absorption according to standard DIN EN 1097-6: 2000 + AC: 2002 + A1: 2005 of 0-5 wt .-%, in particular 0.1 to 4 wt .-%, especially 0.2 to 4 wt., In particular 0.4 - 3.5 wt .-% or 0.5 - 3 wt .-%, based on (water absorption based on the dry mass of the aggregates).
  • the aggregates have a content of fines of from 0.001 to 40% by weight, in particular from 1 to 35, especially from 1.5 to 30% by weight or from 3 to 30% by weight, based on the total weight of all aggregates. Fines in the present case denote solids having a particle size ⁇ 125 ⁇ m. The particle size can be determined for example by sieve analysis with a sieve with square openings (125 ⁇ 125 ⁇ openings). The fines are especially inert solids and / or solids which are not mineral binders.
  • a clay content of the aggregates is in particular in the range of 0 to 5 wt .-%, in particular 0.1 to 4 wt .-%, especially 0.3 to 3.5 wt .-%, in particular 0.5 to 3.5 wt .-% or 1 to 3 wt. -%.
  • "clay” is understood in particular to be phyllosilicates.
  • the clay content of the aggregates is determined in particular by the Rietveld method, which is based on X-ray diffraction (XRD). This process is known per se to the person skilled in the art.
  • a methylene blue value of the aggregates according to standard DIN EN 933-9 is in particular in the range of 0.1-100 g / kg (grain class 0-75 ⁇ m), especially 3-85 g / kg (grain class 0-75 ⁇ m), in particular 15-75 g / kg (grain class 0 - 75 ⁇ ) or 25 - 60 g / kg (grain class 0 - 75 ⁇ ).
  • the methylene blue value can be considered as a measure of the quality of the aggregates or the surface activity of the aggregates. The higher, for example, the clay content and / or the content of absorbing fines in the aggregates, the greater the methylene blue value and the lower the quality of the aggregates.
  • the binder composition additionally contains water, wherein a weight ratio of water to mineral binder is preferably in the range of 0.25-0.9, in particular 0.3-0.8, preferably 0.35-0.7.
  • a weight ratio of water to mineral binder is preferably in the range of 0.25-0.9, in particular 0.3-0.8, preferably 0.35-0.7.
  • the caramelized sugar is advantageously in an amount of 0.0005 - 10 wt .-%, in particular 0.001 - 2 wt .-%, preferably 0.004 - 0.5 wt .-%, each based on the dry content of the caramelized sugar and based on the content of mineral binder used in the mineral binder composition.
  • the caramelized sugar is advantageously used in the form of an aqueous solution with a dry content of caramelized sugar of 0.01-90% by weight, in particular 10-80% by weight, preferably 25-75% by weight or 35-70% by weight. %, used. This allows in particular a good dosage.
  • the caramelized sugar is used together with at least one additive, in particular a liquefier accelerator, retarder, air entraining agent, defoamer, shrinkage reducer, corrosion inhibitor, preservative, stabilizer and / or dye.
  • at least one additive in particular a liquefier accelerator, retarder, air entraining agent, defoamer, shrinkage reducer, corrosion inhibitor, preservative, stabilizer and / or dye.
  • the caramelized sugar is used together with at least one other condenser.
  • the at least one other condenser is chemically different from the caramelized sugar.
  • the at least one further liquefier advantageously comprises or consists of lignosulfonates, sulfonated naphthalene-formaldehyde condensates, sulfonated melamine-formaldehyde condensates, vinyl copolymers, polycarboxylates and / or polycarboxylate ethers (PCE).
  • the at least one further liquefier is used in particular with a proportion of 0.001-10 wt.%, In particular 0.01-5 wt.%, Preferably 0.02-3 wt.%, Based on the weight of the mineral binder.
  • the weights are in particular based on the solids content of the condenser.
  • a weight ratio of caramelized sugar to the at least one further liquefier is in particular in a range from 1:50 to 50: 1, preferably 1:10 to 10: 1, in particular 1: 10 to 5: 1 or 1: 8 to 2: 1 .
  • the at least one further liquefier comprises or consists of a polycarboxylate ether.
  • the polycarboxylate ether in particular has ester chains, ether, amide and / or imide groups attached to a main chain side chains. Preference is given to ester, ether and / or amide groups, in particular esters and / or ether groups.
  • the main chain has at least one Acid unit or a salt thereof.
  • the acid moiety is in particular an ⁇ -unsaturated mono- or dicarboxylic acid, such as acrylic acid, methacrylic acid, maleic anhydride, maleic acid, itaconic acid, crotonic acid or fumaric acid.
  • the acid moiety is preferably acrylic acid, methacrylic acid, maleic acid and / or a salt thereof and / or combinations thereof.
  • the side chains contain polyalkylene oxide side chains, preferably polyethylene oxide units.
  • a proportion of ethylene oxide units in the polyalkylene oxide side chains, based on all the alkylene oxide units present in the side chains, is preferably more than 90 mol%, in particular more than 95 mol%, preferably more than 98 mol%, in particular 100 mol% ,
  • the polyalkylene oxide side chains preferably have no hydrophobic groups, in particular no alkylene oxides having three or more carbon atoms.
  • a high proportion of ethylene oxide units or a low content of alkylene oxides having three or more carbon atoms reduces the risk of undesirable air entry.
  • the polyalkylene oxide side chains have in particular a structure according to formula - [AO] n -R a .
  • A C 2 - to C 5 -alkylene, which may be branched or unbranched.
  • R a is preferably H, a C to C 2 o-alkyl group, - cyclohexyl group or -alkylaryl group.
  • n 2 to 300, in particular 3 to 200 or 5 to 150.
  • a weight-average molecular weight (M w ) of the polycarboxylate ether is in particular 5 ⁇ 00 - 150 ⁇ 00 g / mol, preferably 10 ⁇ 00 - 100 ⁇ 00 g / mol.
  • a number-average molecular weight (M n ) of the polycarboxylate ether is advantageously 3000-10000 g / mol, in particular 8-100-7000 g / mol.
  • the weight average molecular weight is determined by gel permeation chromatography (GPC) with polyethylene glycol (PEG) as the standard. This technique is known per se to the person skilled in the art.
  • the polycarboxylate ether preferably comprises or consists of the following partial structural units: a) a molar proportions of a partial structural unit S1 of the formula (I)
  • R 1 each independently, is -COOM, -SO 2 -OM,
  • R 2 , R 3 , R 5 , R 6 , R 9 , R 10 , R 13 and R 14 are each independently, H or an alkyl group having 1 to 5 carbon atoms,
  • R 4 , R 7 , R 11 and R 15 are H, -COOM or an alkyl group having 1 to 5 carbon atoms,
  • M independently of one another, is H + , an alkali metal ion, an alkaline earth metal ion, a divalent or trivalent metal ion, an ammonium ion, an organic ammonium group, m is 0, 1 or 2, p is 0 or 1,
  • R 8 and R 12 are a C to C2o alkyl group, - cycloalkyl group, alkylaryl group or a group of the formula - [AO] n -
  • R b and R c independently of one another, stand for a C 1 - to C 20 -alkyl group, -cycloalkyl group -alkylaryh group or -aryl group, or for a hydroxyalkyl group or for an acetoxyethyl- (CH 3 -CO-O-CH 2 -CH 2 -) or a hydroxy-isopropyl- (HO- CH (CH 3 ) -CH 2 -) or an acetoxyisopropyl group (CH 3 -CO-O-CH (CH 3 ) -CH 2 -);
  • R b and R c together form a ring of which the nitrogen is a part to form a morpholine or imidazoline ring;
  • R d is a C 2 -C 4 -alkylene group
  • R e and R f are each independently a C 2 -C 20 -alkyl group, -cycloalkyl, -alkylary,
  • the sequence of the partial structural units S1, S2, S3 and S4 can be alternating, block-like or random. Furthermore, it is also possible that, in addition to the partial structural units S1, S2, S3 and S4, further partial structural units are present.
  • the partial structural units S1, S2, S3 and S4 together have a weight fraction of at least 50% by weight, in particular at least 90% by weight, very particularly preferably at least 95% by weight, of the total weight of the polycarboxylate ether.
  • a ratio of a / (b + c + d) is in particular in the range of 1-5.
  • the polycarboxylate can be prepared based on acrylic or methacrylic acid monomers, which is interesting from an economic point
  • Such polycarboxylate ethers can be prepared on the basis of maleic acid monomers.
  • Such polycarboxylate ethers can be prepared, for example, starting from (meth) acrylic acid esters, vinyl (meth) allyl or isoprenol ethers.
  • R 2 and R 5 are mixtures of H and -CH 3 . Preference is given to mixtures with 40-60 mol% H and 40-60 mol% CH 3 . If the corresponding partial structural units are present, this also applies in particular to R 9 and R 13 . In this case, moreover, R 3 and R 6 are preferably H, and, if the corresponding partial structural units are present, R 9 and R 13 are H.
  • R 1 COOM
  • R 2 H
  • R 5 -CH 3
  • R 1 COOM
  • R 1 is COOM
  • R 2 and R 5 independently of one another, are H, -CH 3 or mixtures thereof.
  • R 2 and R 5 are very particularly advantageous for mixtures of H and -CH 3 . Preference is given to mixtures with 40-60 mol% H and 40-60 mol% CH 3 .
  • R 9 and R 13 this also applies in particular to R 9 and R 13 ;
  • R 3 and R 6 are H.
  • R 10 and / or R 14 this also applies in particular to R 10 and / or R 14 ;
  • R 4 and R 7 independently of one another, are H or -COOM, preferably H.
  • the polycarboxylate ethers according to the invention can be prepared in a manner known per se.
  • the polymer-analogous reaction or the radical polymerization are used.
  • the polycarboxylate ethers can be prepared after the polymer-analogous reaction. First, a main chain is produced, which is then equipped with side chains. Polymer-analogous reactions are known per se and are described, for example, in WO97 / 35814A1, WO95 / 09821A2, DE 100 15 135A1, EP 1 138697A1, EP1348729A1 and WO2005 / 090416A1. Details of the polymer-analogous reaction are disclosed, for example, in EP 1 138 697 B1 on page 7 line 20 to page 8 line 50, and in the examples contained therein, or in EP 1 061 089 B1 on page 4, line 54 to page 5 line 38 and in the examples.
  • the polycarboxylate ethers may also be prepared by a free radical polymerization reaction wherein the copolymer is obtained from corresponding ethylenically unsaturated acid, ester and amide monomers in the presence of a free radical generator. This technique is known per se to the person skilled in the art.
  • the invention relates to a composition
  • a composition comprising caramelized sugars and at least one member selected from the group consisting of mineral binders, aggregates and admixtures for mortar and / or concrete.
  • Additives for mortar and / or concrete are in particular substances as defined in EN 934-2.
  • these are accelerators, retarders, air entrainers, defoamers, shrinkage reducers, corrosion inhibitors, preservatives, stabilizers and / or dyes.
  • the composition may be in solid, liquid or pasty state.
  • the composition contains caramelized sugar and at least one further liquefier as described above.
  • the at least one further liquefier particularly comprises a polycarboxylate ether.
  • a weight ratio of caramelized sugar to at least one further liquefier is in a range from 1:50 to 50: 1, preferably 1:10 to 10: 1, in particular 1:10 to 5: 1 or 1: 8 to 2 :1 .
  • the composition comprises the following components or the composition consists thereof: a) 2-50% by weight, in particular 10-40% by weight, preferably 15-35% by weight of a further liquefier, b) 0.2- 50% by weight, in particular 0.5-30% by weight, preferably 1-15% by weight of caramelized sugar, c) 10-97.5% by weight, in particular 50-95% by weight, preferably 75-90% by weight .-% water, d) 0 - 50 wt .-%, in particular 0 - 10 wt .-% or 0.001 - 5 wt .-% further additives, such as Accelerators, retarders, air entrainers, defoamers, shrinkage reducers, corrosion inhibitors, preservatives, stabilizers and / or dyes.
  • additives such as Accelerators, retarders, air entrainers, defoamers, shrinkage reducers, corrosion inhibitors, preservatives, stabilizers and / or dyes.
  • the invention relates to a mineral binder composition containing at least one mineral binder and caramelized sugar.
  • the mineral binder composition may also contain aggregates and / or additives as described above.
  • the mineral binder composition contains a further condenser as described above, preferably a polycarboxylate ether.
  • the invention relates to a cured binder composition which is obtainable by mixing a mineral binder composition as described above with water and subsequent curing.
  • Another aspect of the present invention relates to a process for preparing a composition
  • a process for preparing a composition comprising a step of adding caramelized sugar to a mineral binder, aggregates, and / or an admixture for concrete and / or mortar.
  • a mineral binder composition containing at least one mineral binder by adding caramelized sugar to at least one component of the binder composition before, during and / or after admixing the binder composition.
  • the caramelized sugar can for example be added to the mixing water. But it is also possible to mix at least a portion of the caramelized sugar before mixing with the mineral binder, any aggregates and / or an additive.
  • At least one component of the mineral binder composition in particular the mineral binder and / or aggregates, is coated with the caramelized sugar prior to mixing the mineral binder composition.
  • the aggregates are preferably coated.
  • Type 150d Dry content: 40% by weight AG, Zurich, Switzerland
  • Dry content 40% by weight AG, Zurich, Switzerland
  • sucrose 40% by weight in H 2 O Zuckerfabrik Fettfeld,
  • Mortar mixtures The mortar mixtures MM1 - MM3 used have the dry compositions described in Table 3.
  • the content of fines was determined by sieve analysis with a sieve with square openings (125 ⁇ 125 ⁇ openings).
  • the methylene blue value was determined according to standard DIN EN 933-9 and the water absorption according to standard EN 1097-6.
  • the clay content was determined by X-ray diffraction and the Rietveld method.
  • the sands, filler and cement were dry blended for 1 minute in a Hobart mixer. Within 30 seconds, the mixing water, to which sugarcouleur and / or other additives had previously been added, was added and mixed for a further 2.5 minutes. The total mixing time wet took 3 minutes each.
  • the hydration behavior of the mortar and blended mixtures prepared and prepared as described above was followed by measuring the temporal temperature development.
  • the temperature measurement was carried out under adiabatic conditions with a thermocouple as a temperature sensor in a conventional manner. All samples were measured under the same conditions.
  • the measure of the solidification time considered in the present case is the time that has elapsed from mixing the mortar mixture until reaching the maximum temperature occurring after the induction phase or rest phase.
  • the slump (ABM) was measured according to standard EN 1015-3 for mortar compositions and EN 12350-5 for concrete compositions.
  • the setting mass is determined according to standard EN 12350-2.
  • sucrose alone increases the processability relatively strong. This is probably also the reason for the improved processability in trial A3.
  • Glucose has a lower initial mass when compared to sucrose and sugar caramel (experiment A8). Glucose shows neither alone nor in Combination with a PCE a striking liquefaction effect. The latter may be due to the fact that glucose does not cause a significant reduction in PCE adsorption on the aggregates.
  • sucrose and glucose Experiments A3, A4, A7 and A8 also results in comparison with the experiments containing Zuckercouleur (experiments A5, A9 and A10) a strong extension of the solidification time, especially in the experiments with sucrose.
  • Table 7 shows the results using various additives in mortar mixture MM2 at a water / cement value of 0.68.
  • the column " ⁇ 0- 6 ⁇ ” is defined as described in Table 6 below.
  • sucrose alone (experiment B7) already causes a relatively large increase in liquefaction.
  • the increased liquefaction effect in experiment B3 should be caused essentially by the liquefaction performance of the sucrose.
  • the liquefaction performance of sugar coulter is not sufficient to explain the massively higher liquefaction effects of experiment B5. This can be explained in particular by the reduction of PCE adsorption on the aggregates.
  • Table 8 shows the results using various additives in mortar mix MM3 at a water / cement value of 0.86.
  • the column " ⁇ 0- 9 ⁇ ” indicates the percentage decrease in spread or processability over the period of 90 minutes after application.
  • Table 9 shows the results using the additive compositions ZM1 and ZM2 in the concrete mix BM1 at a water / cement value of 0.45.
  • the column “ ⁇ 0- 9 ⁇ ” indicates the percentage decrease in spread or workability over 90 minutes after application.
  • Table 10 shows the results using various additives in mortar mixture MM2 at a water / cement value of 0.73.
  • the " ⁇ 0- 3 ⁇ " column is defined analogously to Table 6 below.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Civil Engineering (AREA)

Abstract

L'invention concerne un sucre caramélisé qui est utilisé comme fluidifiant pour des compositions de liant minéral.
EP14786887.1A 2013-10-25 2014-10-20 Sucre caramélisé comme fluidifiant pour des compositions de liant minéral Pending EP3060531A1 (fr)

Priority Applications (1)

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EP14786887.1A EP3060531A1 (fr) 2013-10-25 2014-10-20 Sucre caramélisé comme fluidifiant pour des compositions de liant minéral

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EP13190301 2013-10-25
PCT/EP2014/072454 WO2015059100A1 (fr) 2013-10-25 2014-10-20 Sucre caramélisé comme fluidifiant pour des compositions de liant minéral
EP14786887.1A EP3060531A1 (fr) 2013-10-25 2014-10-20 Sucre caramélisé comme fluidifiant pour des compositions de liant minéral

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WO2017072126A1 (fr) 2015-10-26 2017-05-04 Sika Technology Ag Inertisation de minéraux argileux et amélioration de l'action de liquéfiants dans des compositions minérales de liant contenant de l'argile
JP6436193B2 (ja) * 2016-07-20 2018-12-12 日亜化学工業株式会社 発光装置
EP3515209B1 (fr) * 2016-09-20 2024-06-12 The Coca-Cola Company Composition de couleur caramel comestible
WO2021026629A1 (fr) 2019-08-14 2021-02-18 Pyrotek High Temperature Industrial Products Inc. Procédé de fabrication d'un article réfractaire
US11535557B2 (en) 2021-04-15 2022-12-27 Saudi Arabian Oil Company Lignosulfonate and hydrolyzed carbohydrate retarder additive for cement mixture

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US2418431A (en) * 1941-08-13 1947-04-01 Jr Edward W Scripture Cement composition
CH255349A (de) 1942-12-09 1948-06-30 Ag Sika Holding Verfahren zur Herstellung von Mörtel bezw. Beton mit guten Plastizitätseigenschaften.
US3573947A (en) 1968-08-19 1971-04-06 United States Gypsum Co Accelerator for gypsum plaster
PL183101B1 (pl) 1993-09-29 2002-05-31 Grace W R & Co Mieszanka hydraulicznego cementu, imidyzowany polimer akrylowy i sposób wytwarzania imidyzowanego polimeru akrylowego
TR199801911T2 (en) 1996-03-26 1999-01-18 Arco Chemical Technology, L.P. �imento katk�lar�.
DK1061089T3 (da) 1999-06-15 2004-07-12 Sika Schweiz Ag Cementdispergerende polymerer med multiple formål til beton med stor flydeevne og stor styrke
EP1138696A1 (fr) 2000-03-29 2001-10-04 Sika AG, vorm. Kaspar Winkler & Co. Polymères pour compositions dispersantes pour ciment
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EP1348729A1 (fr) 2002-03-25 2003-10-01 Sika Schweiz AG Polymères en état changeant solide
EP1577327A1 (fr) 2004-03-19 2005-09-21 Sika Technology AG Polymère comportant des groupes amide et ester, sa préparation et son utlisation
EP2128110B1 (fr) * 2008-05-29 2016-08-17 Sika Technology AG Additif pour liant hydraulique doté d'un temps de traitement plus long et d'une plus grande résistance à court terme
EP2383237A1 (fr) 2010-04-30 2011-11-02 BENEO-Orafti S.A. Retardateur de prise et plastifiant pour béton
EP2559675A1 (fr) 2011-08-16 2013-02-20 Sika Technology AG Saccharose enzymatique inversée comme agent de dispersion

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WO2015059100A1 (fr) 2015-04-30
US9688577B2 (en) 2017-06-27

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