WO2001055053A1 - Compositions a base de derives phenoliques et leur utilisation comme adjuvants des liants mineraux - Google Patents
Compositions a base de derives phenoliques et leur utilisation comme adjuvants des liants mineraux Download PDFInfo
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- WO2001055053A1 WO2001055053A1 PCT/FR2001/000268 FR0100268W WO0155053A1 WO 2001055053 A1 WO2001055053 A1 WO 2001055053A1 FR 0100268 W FR0100268 W FR 0100268W WO 0155053 A1 WO0155053 A1 WO 0155053A1
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
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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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/02—Alcohols; Phenols; Ethers
-
- 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
- C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
-
- 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
-
- 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
- C04B24/32—Polyethers, e.g. alkylphenol polyglycolether
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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
-
- 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
- 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
- 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
- C04B40/0042—Powdery 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Definitions
- composition for binders in the form of powder or aqueous suspension, comprising at least one phenolic derivative additive and at least one amorphous silica.
- composition for binders in the form of powder or aqueous suspension, comprising at least one phenolic derivative and at least one polymer.
- the invention also relates to the processes for preparing these different compositions, and to their uses in the preparation, in particular of mortars and concretes.
- mortars and concretes are prepared by mixing mineral binders, preferably a cement, with water, and aggregates, such as sand and gravel.
- mineral binders designates products, such as, for example, cement (or lime) which are capable of setting and hardening in the presence of water with the formation of stable compounds.
- cement or lime
- the specialist is in the habit of qualifying more specifically as concrete, a composition in which the mineral filler is based on relatively large aggregates (of the order of 5 to 30 mm), and in mortar a composition in which the mineral filler is based on finer aggregates, the term “concrete” will be used interchangeably in the present description to designate all types of compositions, whatever the particle size, in order to simplify the description.
- cementitious matrices which are compositions free from sand and aggregates, and containing cement and, optionally, fillers such as filler (calcium carbonate, fly ash, slag, etc.).
- superplasticizing additives are generally added to the concrete, such as condensates of the naphthalene sulfonate type, melamine sulfonate, of the polycarboxylate type of alkali metals and alkaline earth metals; polyacrylates of alkali and alkaline earth metals; polyalkylene oxides optionally grafted with a calcium complexing group or their derivatives, optionally in combination with an aminoalkylene phosphonate; derivatives of polymers or copolymers based on acrylic or methacrylic acid, and terpolymers of acrylic or methacrylic acid or their salts.
- an agent improving the fluidity of concrete can very significantly degrade the cohesion of the concrete, and for example, have a negative effect on pumpability (in the case of fluid concretes, for example ). Furthermore, it can also, at high doses, cause significant amounts of air, which results in a degradation of the mechanical properties, and induce setting delays, which immobilizes the formworks for long periods of time, thus limiting progress of construction sites. It has now been found, and this is what constitutes the object of the present invention, that the addition of an effective amount of a phenolic derivative in a cementitious matrix, preferably concrete, makes it possible to obtain advantageous properties.
- the essential constituent involved in the cement compositions of the invention is a phenolic derivative.
- the phenolic derivatives preferably used correspond more particularly to formula (I): in said formula (I):
- a linear or branched alkyl group having from 1 to 12 carbon atoms, preferably from 1 to 4 carbon atoms,
- an ionizable group G in acid or safiated form such as a carboxylic, carboxylate, sulfonic, sulfonate, hemisulfuric, sulfate, phosphonic, phosphonate, hemiphosphoric, phosphate group in acid or salified form,
- an R group which may be a linear or branched alkyl group having from 1 to 12 carbon atoms or an alkenyl or alkynyl group having from 2 to 12 carbon atoms carrying an ionizable group G in acid or safiated form such as carboxylic group, carboxylate, sulfonic, sulfonate, hemisulfuric, sulfate, phosphonic, phosphonate, hemiphosphoric, phosphate in acid or salified form,
- a linear or branched alkenyl group having from 2 to 6 carbon atoms, preferably from 2 to 4 carbon atoms, such as vinyl, allyl,
- an acyl group of formula R 3 -CO- in which R 3 represents a linear or branched alkyl group preferably having 1 to 17 carbon atoms, acetyl, lauroyl, palmitoyl, stearoyl,. a group O,. a group -CHOH-COOH,. a group of formula:
- - N is a number ranging from 0 to 5, preferably equal to 1, 2 or 3.
- X-i more particularly represents a formyl group or a carboxylic group.
- the group R 2 preferably represents a hydrogen atom or a methyl group and the group R .., represents a hydrogen atom.
- the number of oxyalkylenated units can vary widely between 1 and 50, but it is preferably between 1 and 20.
- the invention relates to phenolic derivatives corresponding to formula (I), in which the group Y * - represents a functionalized group symbolized by the group R which is an alkyl, alkenyl or alkynyl group carrying an ionizable group.
- the invention does not exclude that the group R as defined is interrupted by a heteroatom, oxygen or nitrogen or by a functional group such as carbonyl, carboxy, amino, amido, sulfone, etc.
- Xi represents a group of type R comprising an ionizable group.
- phenolic derivatives which are entirely suitable for implementing the invention, mention may in particular be made of the following families of compounds: diphenolic compounds, precursor and derivative vanillins, salicylates, nitrogen phenolic compounds.
- phenolic derivatives which can be used as adjuvants for binders, preferably mortars and concretes, are given below.
- vanillomandelic acid . orthovanillomandelic acid,. mandelic acid from catechol,. methylenedioxybenzenemandelic acid,
- vanillin . ethyl vanillin
- the following derivatives are preferably chosen:
- an aromatic compound preferably benzene, is preferably chosen, carrying at least one hydroxyl group and at least one ionizable group: said ionizable group being able to be carried by the aromatic ring, by a side chain carried by the cycle or else be part of the group attached to the oxygen atom.
- ionizable group symbolized subsequently by G, is meant a group in acid or salified form such as a carboxylic, carboxylate, sulfonic, sulfonate, hemisulfuric, sulfate, phosphonic, phosphonate, hemiphosphoric, phosphate in acid or salified form.
- the preferred ionizable groups are the -COOM or -SO 3 M groups in which M represents a hydrogen atom or a metal cation, preferably an alkaline cation, preferably sodium or an ammonium group,
- a first category of preferred phenolic derivatives involved in the process of the invention are monohydroxylated phenolic derivatives.
- the derivative of formula (I) comprises at least one ionizable group G; the group G being on the cycle preferably ortho with respect to the hydroxyl group or else carried on the group fixed on the oxygen atom.
- the derivatives of this category can be represented by the formulas (la) and (Ib):
- X 2 represents an ionizable group, preferably a carboxylic or carboxylate group or a group R carrying an ionizable group G
- Xi has the meaning given above and n 2 is a number from 0 to 4.
- the other category of interesting phenolic derivatives according to the invention are the dihydroxylated phenolic derivatives, which can be represented by the formula (le):
- X 2 represents an ionizable group, preferably a sulfonic or sulfonate group or a group R carrying an ionizable group G
- X- ⁇ has the meaning given above
- Y 3 represents a hydrogen atom or a group of formula (F) and n 3 is a number from 0 to 3.
- n 3 is preferably equal to 1 and Xi preferably represents an ionizable group, preferably a sulfonic or sulfonate group or a group R carrying an ionizable group G.
- the compounds called TIRON optionally oxyethylenated illustrate the family of phenolic derivatives corresponding to formula (Ie).
- a phenolic derivative is added to an inorganic binder. It is also possible to use a mixture of phenolic derivatives.
- the method according to the present invention applies to all kinds of mineral binders, in particular cements, artificial lime, cement / hydraulic lime or fatty lime mixtures, plasters, etc.
- cement designates all the combinations of (lime + silica + alumina) or of (lime + magnesia + silica + alumina + iron oxide) commonly known as hydraulic cements.
- the preferred cements are Portland type cements, in which the clinker represents at least 65% by weight; the possible additions, which are at most 35% by weight, can be fly ash from thermal power stations, pozzolans, blast furnace slag, fillers or mixtures of these products.
- Said Portland cements also contain, in general, calcium sulphate, which is introduced in the form of gypsum CaSO 4 .2H 2 0 or of anhydrite CaS0 4 .
- Special cements can also be used, such as masonry cements and masonry binders.
- the adjuvant of the invention can be introduced at different stages.
- the phenolic derivative if it is in solid form, it can be introduced either at the level of the manufacture of the binder, preferably a cement, for example, mixed with the clinker or even further downstream during the manufacture of the mineral matrix. , by dry premixing with the other constituents of mortars and concretes.
- a phenolic derivative in liquid form it can be deposited on a support (silica or calcium carbonate, for example),
- the admixture is in liquid form or soluble in water, it can be introduced into the mixing water or else introduced during the mixing of the mortar or concrete.
- the phenolic derivative is used in an amount which can represent from 0.05 to 3%; preferably from 0.1 to 0.3% of the weight of the binder expressed as dry matter.
- the association of a phenolic derivative with a mineral binder makes it possible to obtain good rheology control (control of the consistency of the fresh material), the setting kinetics and acquisition of mechanical performance ( resistance to bending and compression).
- the fields of application of the admixtures of the invention are very broad: concrete in the broad sense, for example structural concrete, precast concrete, road concrete, concrete paving, finishing materials (smoothing plasters , adhesive mortars, repair mortars).
- Phenolic / silica derivative Phenolic / silica derivative.
- Another object of the invention therefore resides in an adjuvant composition for mineral binders characterized in that it comprises at least one amorphous silica, preferably in aqueous suspension and at least one phenolic derivative. It is known to use an ultra-fine silica to improve the cohesion of grouts or mortars or fluid concretes.
- the addition of a superplasticizer alone can cause loss of cohesion, delayed setting and a decrease in mechanical properties at young ages.
- the concrete prepared is given an improvement in cohesion, in particular by increasing pumpability and plasticity when said composition was incorporated into fluid concrete or by reducing rebound, when it was introduced into shotcrete.
- the ternary association silica / phenolic derivative / superplasticizer has the advantage of increasing the final mechanical strengths.
- the presence of the phenolic derivative makes it possible to obtain, in an unexpected manner, concretes which present at young ages high mechanical characteristics (tensile strengths by bending and in simple compression), although there is presence of a superplasticizer known to delay the acquisition of mechanical performance at young ages.
- the adjuvant compositions according to the invention can be in different physical forms in the form of a powder or an aqueous suspension.
- a first constituent of the adjuvant composition according to the invention is the phenolic derivative as defined above which preferably corresponds to formula (I) and even more preferably to formulas (la), (Ib) or (le).
- the other constituent of the composition of the invention is an amorphous silica.
- the mode of preparation of the silica can be arbitrary (addition of acid on a silicate base stock, simultaneous total or partial addition of acid or silicate on a base stock of water or silicate solution, etc. ), and is chosen according to the type of silica that one wishes to obtain.
- the stage of separation of the silica from the reaction medium is carried out by any known means, press filter or vacuum filter for example. This collects a filter cake, which is washed if necessary. This cake can be, optionally after disintegration, dried by any known means, in particular by atomization, then optionally ground and / or agglomerated. All of these protocols are the subject of a detailed description in application EP 736 501, to which reference will be made.
- the amorphous silica is used in the form of an aqueous suspension.
- aqueous suspensions it is very interesting from an economic point of view to use such suspensions, because their use avoids the use of separate devices for the separate and / or successive introduction of silica and (s ) phenolic derivative (s) of the invention.
- the addition of the phenolic derivative to the aqueous silica suspension made it possible to increase the stability of the silica suspension, due to its dispersing effect.
- the presence of said phenolic derivative gives the suspension better resistance to bacterial attack.
- the aqueous suspension involved in the invention advantageously has an amorphous silica content of between 1 and 60% by weight, preferably between 1 and 49%, and even more preferably between 3 and 35% by weight, relative to the total weight of suspension.
- the precipitated silica consists of particles generally having a CTAB specific surface of between 50 and 250 m 2 / g, and in particular between 100 and 240 m 2 / g.
- the CTAB surface is the external surface determined according to standard NFT 45007 (November 1987).
- the suspension according to the invention advantageously contains a precipitated silica having a good capacity for dispersion and disagglomeration.
- the silica in particular the precipitated silica, contained in the aqueous suspension, can be finely divided, in particular following grinding. (e.g. wet grinding) or ultrasonic deagglomeration.
- a silica sol is used.
- the aqueous silica soils are aqueous dispersions of colloidal silica, in which the silica is present in the form of spherical particles which are not cross-linked with one another and which carry hydroxyl groups on the surface.
- the physical and chemical properties of silica soils and their manufacturing process are described in Ullmans Encyclopàdie der Technischen Chemie, 4th edition, volume 21, pages 456-458.
- said soils advantageously have a particle size between 4 and 60 nm, and a BET specific surface ranging from 45 to 700 m 2 / g.
- the BET specific surface is determined according to the BRAUNER-EMMET-TELLER method described in "The Journal of the American Chemical Society", Vol. 60, Page 309, February 1938, and corresponding to standard NFT 45007 (November 1987).
- amorphous silica is in the form of an aqueous or colloidal suspension, in accordance with the process of the invention, it is combined with at least one phenolic derivative.
- the latter can be introduced during or at the end of the preparation of the aqueous silica suspension. It should be noted that this term, used in the rest of the text, also covers silica soils.
- the amount of the phenolic derivative present in the aqueous silica suspension, expressed in dry extracts, can represent from 0.5 to 5% of the total weight of the suspension, and preferably at least 1% of the total weight of the suspension.
- the present invention also relates to processes for preparing an aqueous suspension using the phenolic type additive as defined according to the invention.
- the aqueous suspension according to the invention can be prepared (in particular on site) from a composition in powder form comprising at least one amorphous silica in powder form, and at least one phenolic derivative in powder form. according to a process consisting in mixing them, under agitation (mechanical agitation in particular); it suffices to introduce this composition into the mixing water, and to knead the assembly obtained.
- Said aqueous suspension can also be prepared, optionally according to a process consisting in mixing, with stirring (mechanical stirring in particular), at least one amorphous silica meeting the definition above, in the form of a powder, with an aqueous solution of the phenolic derivative, and possibly water.
- the aqueous suspension can finally be optionally prepared according to a process consisting in mixing, with stirring (mechanical stirring in particular), an aqueous suspension of at least one amorphous silica, with an aqueous solution of at least one phenolic derivative, and optionally of the 'water.
- this process consists in adding, with mechanical stirring, an aqueous solution of at least one phenolic derivative in an aqueous suspension of at least one precipitated silica, and optionally of water, and in continuing the stirring of the mixture thus got.
- the temperature at which the addition is carried out is chosen according to the nature of the phenolic derivative, so as to avoid the degradation of the latter.
- the aqueous suspension according to the invention can be added at a rate of 0.5 to 15% by weight, and preferably 2.5 to 5%, relative to the weight of cement used to prepare the concrete.
- composition of the invention in the form of a powder
- it can be prepared by simple dry mixing of the phenolic derivative in the form of powder (or optionally deposited on a support if it is liquid such as silica or carbonate) and silica in powder form.
- cement designates all the combinations of (lime + silica + alumina) or of (lime + magnesia + silica + alumina + iron oxide) commonly known as hydraulic cements.
- the preferred cements are Portland type cements, in which the clinker represents at least 65% by weight; the possible additions, which are at most 35% by weight, can be fly ash from thermal power stations, pozzolans, blast furnace slag, fillers or mixtures of these products.
- Said Portland cements also generally contain calcium sulphate, which is introduced in the form of CaSO 4 .2H 2 O gypsum or CaSO 4 anhydrite.
- composition of the invention being in different physical forms, solid or liquid, there are many possibilities for introducing it during the manufacture of concrete and mortar.
- the composition if it is in solid form, it can be introduced either at the level of the manufacture of the binder, preferably a cement, for example, mixed with the clinker or even further downstream during the manufacture of the mineral matrix, by dry premixing with the other constituents of mortars and concretes.
- a cement for example, mixed with the clinker or even further downstream during the manufacture of the mineral matrix
- composition is in liquid form, it can be introduced into the mixing water or else introduced during the mixing of the mortar or concrete.
- Said composition can also be introduced into fresh mortar or concrete, immediately before use.
- the phenolic derivative is used in any composition for binders in an amount which may represent from 0.05 to 3%; preferably from 0.1 to 0.3% of the weight of the binder expressed as dry matter.
- the silica is used in an amount which can represent from 0.1 to 5%; preferably from 0.1 to 3% of the weight of the binder expressed as dry matter
- the invention also relates to the use of a composition as described above, in a medium of the cement matrix, concrete or mortar type, as an agent improving the fluidity and cohesion of said medium and the mechanical properties of young people. ages, at 28 days, and at term.
- the invention finds an application in concrete paving, smoothing plasters and more particularly in so-called specialty concretes, which must have particular rheology properties in the fresh state, in appearance in the cured state, long-term mechanical resistance (in particular in tension by bending, and in compression), and inter alia, of fluidity during the implementation.
- the invention achieves not only the high fluidity which is often desirable, but also an improvement in pumpability, which makes it easier to install.
- the invention makes it possible to obtain, in addition to the high cohesiveness, a considerable reduction in the rebound of the sprayed concrete.
- Phenolic / silica / suDerDlastifier derivative Phenolic / silica / suDerDlastifier derivative.
- at least one amorphous silica and a phenolic derivative are combined with a superplasticizer when its presence is required in the intended application.
- the presence of the phenolic derivative makes it possible to minimize the side effects resulting from the use of a superplasticizer, namely the entrainment of air which causes the reduction in mechanical strength.
- the amount of superplasticizer used which limits the risks of bleeding (rise of laitance on the surface).
- the amount of superplasticizer can be less, namely from 0.3 to 2%, preferably 1% relative to the weight of the cement.
- superplasticizers use may in particular be made of condensates of the naphthalene sulfonate type, melamine sulfonate, of the polycarboxylate type of alkali and alkaline earth metals; polyacrylates of alkali and alkaline earth metals; polyalkylene oxides optionally grafted with a calcium complexing group or their derivatives, optionally in combination with an aminoalkylene phosphonate; derivatives of polymers or copolymers based on acrylic or methacrylic acid, and terpolymers of acrylic or methacrylic acid or their salts.
- the alkali and alkaline earth metals can be chosen from sodium, potassium, calcium or magnesium.
- the alkylene polyoxides grafted by a calcium complexing group, of the functionalized polyethylene glycol type, such as CHRYSOFLUID OPTIMA 100 are preferred.
- compositions comprising both the phenolic derivative, the silica and the superplasticizer, in powder form or in liquid form.
- the aqueous suspension of silica, phenolic derivative (s) and superplasticizer (s) has a dry matter concentration by weight varying most often between 20 and 50%.
- the contents of the various constituents expressed as dry matter can be:
- compositions include:
- compositions of the invention in powder form, there may be mentioned those which result from the combination of silica and MELMENT F10® sold by the company CIA FOSROC (condensate of melamine sulfonate type) and salicylic acid.
- this mixture can be introduced when it is in powder form, with dry products, such as cements, aggregates and other adjuvants and even in admixture with the clinker.
- the mixture can be used to make a grout (composition without load), paving concrete, smoothing plaster or self-leveling mortar or fluid concrete.
- Phenolic / polymer derivative In some mortars and concretes, it is common to add a latex, depending on the application.
- the expression “latex” is used in this field even when the water in the aqueous suspension is removed and the polymer is then in the form of a powder redispersible in water.
- Common mortars, mixtures of cement and sand, are often used in a thin layer to make a coating on a wall, a screed, a floor, a bonding layer between a covering, for example, tiling and its support. They can be used as repair mortars or for small seals.
- Another object of the invention therefore lies in an adjuvant composition for mineral binders, characterized in that it comprises at least one polymer and at least one phenolic derivative.
- aqueous or latex suspension comprising at least one polymer and at least one phenolic derivative.
- a first constituent of the adjuvant composition according to the invention is the phenolic derivative as defined above which preferably corresponds to formula (I) and even more preferably to formulas (la), (Ib) or (le).
- the other constituent involved in the composition of the invention is a polymer.
- the polymer (homopolymer, copolymer, terpolymer or other) used is of natural or, generally, synthetic origin.
- the monomers can be all types of polymers, in the form of particles insoluble in water and in particular those resulting from the polymerization of ethylenically unsaturated monomers.
- the monomers can be chosen from:
- esters that is to say esters of acrylic acid and methacrylic acid with C 1 -C 12 alkanols, preferably C 1 -C 8 , such as methyl acrylate , ethyl acrylate, propyl acrylate, n-butyl acrylate, isobutyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, methacrylate n-butyl, isobutyl methacrylate, - vinyl nitriles having from 3 to 12 carbon atoms, in particular acrylonitrile and methacrylonitrile,
- - ethylenic unsaturated mono and di-carboxylic acids such as acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid and the mono-alkyl esters of dicarboxylic acids of the type mentioned with the alkanols preferably having 1 to 4 carbon atoms and their N-substituted derivatives,
- - amides of unsaturated carboxylic acids such as acrylamide, methacrylamide, N-methylolacrylamide or -methacrylamide
- esters of (meth) acrylic acids with alkanediols preferably containing 2-8 carbon atoms such as glycol mono (meth) acrylate, hydroxypropyl mono (meth) acrylate, mono (meth) acrylate of 1 -4 butanediol as well as the monomers comprising two polymerizable double bonds such as ethylene glycol dimethacrylate,
- the polymer used in the cement according to the invention results from the polymerization of at least one ethylenically unsaturated monomer and at least one monomer chosen from monomers with a carboxylic function and acrylamide or the methacrylamide.
- the ethylenically unsaturated monomer can be chosen from: styrene, butadiene, acrylic or methacrylic esters of CC 12 alkyl and their corresponding acids or vinyl esters. It can advantageously be a polymer prepared from a styrene / butadiene mixture with regard to the ethylenically unsaturated monomers.
- the monomer having a carboxylic function can be chosen from carboxylic acids containing ethylenic unsaturation. It can for example be chosen from acrylic acid, itaconic acid, fumaric acid, crotonic acid, maleic acid, maleic anhydride, mesaconic acid, glutaconic acid or their mixtures.
- the polymers prepared from a mixture of monomers comprising 99.9 to 92% by weight of at least one ethylenically unsaturated monomer and 0.1 to 8% by weight, preferably 2 to 5%, of at least one monomer with a carboxylic function.
- the polymer is obtained from the polymerization of at least one monomer chosen from vinyl esters of carboxylic acid such as vinyl acetate, vinyl versatate, vinyl propionate. It can in particular be a vinyl versatate / vinyl acetate copolymer.
- It may consist of a styrene-butadiene copolymer, a vinyl ester (co) polymer (s), a vinyl acetate (co) polymer; a (co) polymer of ethylene acetate.
- a polymer of vinyl acetate It is thus possible to use a polymer of vinyl acetate. It is also possible to use a copolymer of vinyl acetate and of at least one vinyl ester of saturated monocarboxylic acids, branched or not, having from 1 to 12 carbon atoms, such as propianate, pivalate, laurate or, preferably, versatate (registered trademark designating mixtures of branched acid esters having from 9 to 12 carbon atoms) of vinyl.
- the vinyl acetate / vinyl versatate copolymer sold under the name RHOXIMAT is preferred.
- the (co) polymer may also consist of a copolymer of a vinyl ester, in particular vinyl acetate, and of at least one acid ester unsaturated mono- or dicarboxylic having from 3 to 6 carbon atoms and from alkyl having from 1 to 10 carbon atoms, such as acrylates, methacrylates, maleates, methyl, ethyl, butyl fumarates, ethylhexyl.
- the (co) polymer can be used either in the form of a powder or in dispersion in water (this is called latex).
- a first form of the composition of the invention is an aqueous or latex suspension comprising at least one polymer and at least one phenolic derivative.
- the latex is generally obtained following an emulsion polymerization of the monomers.
- the polymer content is between 5 and 60% by weight, preferably between 10 and 50% by weight, relative to the total weight of the suspension.
- the phenolic derivative can be introduced into the polymer suspension. It can be present in the latex suspension in an amount which can advantageously vary between 0.1 and 10% of the weight of polymer expressed as dry matter, and preferably between 1 and 5%.
- compositions of the invention is a powder form.
- the water in a latex can be removed, for example, by freezing, then sublimation or lyophilization
- anti-caking additives a conventional mineral filler can be used, for example, silica, calcium carbonate, kaolin, barium sulphate, titanium oxide, talc, hydrated alumina, bentonite and calcium sullfoaluminate (satin white).
- the quantity by weight of polymer in said mortar is advantageously between 0.1 and 10%, in particular between 0.5 and 6%, and more preferably between 0.1 and 0.3% relative to the weight of mineral binder. In some applications, the upper limit may be exceeded or even reach
- compositions of the invention can be advantageously used in self-leveling fluid mortars.
- self-leveling fluid mortar a mortar generally put in place by pumping, which makes it possible to obtain, after application or pouring on a horizontal surface, a screed free of surface irregularities, and perfectly horizontal, without mechanical treatment of the surface (such as in particular smoothing) following the pouring of said mortar.
- the self-leveling fluid mortar comprises at least one mineral binder, preferably a Portland cement (in particular CPA CEM I or CPJ CEM II) or aluminous, calcium sulphate, of natural or synthetic origin; aggregates, preferably silica or silica-calcareous sand, optionally a setting regulator, a fluidizer, and preferably, at least one (co) polymer resin, and water called mixing water.
- a Portland cement in particular CPA CEM I or CPJ CEM II
- aluminous, calcium sulphate of natural or synthetic origin
- aggregates preferably silica or silica-calcareous sand, optionally a setting regulator, a fluidizer, and preferably, at least one (co) polymer resin, and water called mixing water.
- anhydrous calcium sulphate CaSO 4 (in particular anhydrite CaSO 4 of natural origin or of synthetic origin, in the form of fluoro-, phospho-, sulfo- or titano-anhydrite), and / or partially hydrated calcium sulphate, in particular ⁇ -hemihydrate CaSO 4 .1 / 2H 2 0.
- Fluid mortar generally has an aggregate / mineral binder weight ratio of between 1 and 6, for example between about 1.2 and 2.0.
- the amount of water (so-called mixing water) present in the fluid mortar according to the invention is usually between 30 and 60%, for example between 40 and 50%, by weight relative to the weight of mineral binder.
- the quantity by weight of polymer in said mortar is advantageously between 0.5 and 6%, in particular between 1, 5 and 3%, relative to the weight of mineral binder.
- It can also contain a setting accelerator or a thinner.
- the total amount by weight of setting regulator (s) in said mortar is then generally between 0.1 and 5%, in particular between 0.5 and 2.5%, by weight, relative to the weight of mineral binder .
- plasticizers of melamines, poiymelamines, polynaphthalenes (in particular polynaphthalene sulfonate of sodium, calcium or potassium), polyacrylates (especially sodium, calcium or potassium polyacrylate), lignosulfonates, etc.
- the fluid mortar according to the invention may also contain at least one fluidizer, generally between 0.1 and 2.5%, in particular between 0.2 and 1.5%, by weight, relative to the weight of binder. mineral.
- the fluid mortar according to the invention comprises, in addition to the phenolic derivative, anhydrite or ⁇ -hemihydrate, sand, a (co) polymer of vinyl acetate, a fluidizer, a regulator plug, lime and water.
- the adjuvant according to the invention is used in the fluid mortar according to several embodiments, which can be chosen according to the physical form of the phenolic derivative and of the polymer.
- compositions which can be used (in particular on the site) for the preparation of a self-leveling fluid mortar composition which has the same formulation (or constitution) as the fluid mortar, according to the invention, described above, except that said composition does not comprise water; it then suffices to introduce this composition into the mixing water, and to knead the assembly obtained.
- the phenolic derivative upstream of the manufacture of the mortar.
- it can be introduced during the preparation of the latex or else during the drying of the latex by any known means (for example atomization tower), in order to obtain a powder.
- a polymer powder additivated with at least one phenolic derivative is thus obtained.
- the presence of the phenolic derivative in the mortar according to the invention, preferably at a rate of 0.1 to 5% of the weight of the binder makes it possible to improve the rheology of the screed obtained from said mortar.
- the invention also relates to the use of a phenolic derivative, as an additive allowing the improvement of the mechanical resistance in a screed obtained from a self-leveling fluid mortar comprising, in addition to said additive, at least a mineral binder, aggregates and water.
- the screed obtained from the fluid mortar according to the invention is generally put in place by pumping and applied, in particular by casting it on a horizontal surface.
- cement mortars which comprise from 2 to 20%, preferably from 10 to 20% of a synthetic polymer as mentioned above expressed relative to the weight of the cement. They also contain other additives such as fillers and / or pigments; emulsifiers of ionic nature or not, plasticizers (dibutyl phthalate, tricresyl phosphate); thickeners (carboxymethylcellulose, methylcellulose, ethylcellulose, alkaline and alkaline earth alginates); anti-freeze agents; defoaming agents (silicone products or dialkyl phosphate containing 15 to 20 carbon atoms); anti-fungal agents, etc.
- plasticizers dibutyl phthalate, tricresyl phosphate
- thickeners carboxymethylcellulose, methylcellulose, ethylcellulose, alkaline and alkaline earth alginates
- anti-freeze agents defoaming agents (silicone products or dialkyl phosphate containing 15 to 20 carbon atoms); anti-
- the phenolic derivative can be introduced in powder form into the mixture of solid ingredients (cements and various fillers)
- At least one phenolic derivative is combined with a superplasticizer when its presence is required in the intended application.
- the presence of the phenolic derivative makes it possible to minimize the side effects resulting from the use of a superplasticizer, namely the entrainment of air which causes the reduction in mechanical strength.
- the amount of superplasticizer used which limits the risks of bleeding (rise of laitance on the surface).
- the amount of superplasticizer can be less, namely from 0.3 to
- compositions comprising both the phenolic derivative and the superplasticizer, in powder form or in liquid form.
- the aqueous suspension of phenolic derivative (s) and superplasticizer (s) has a dry matter concentration by weight varying most often between 20 and 50%.
- they can comprise: - from 10 to 90% by weight of at least one phenolic derivative, - from 10 to 90% by weight of at least one superplasticizer.
- compositions of the invention in powder form, mention may be made of those which result from the combination of MELMENT F10® sold by CIA FOSROC (melamine sulfonate condensate) and salicylic acid.
- this mixture can be introduced when it is in powder form, with dry products, such as cements, aggregates and other adjuvants.
- the mixture of phenolic derivative and superplasticizer (s), whether in powder or liquid form, is introduced into the cement at a rate of 0.5 to 5% by weight.
- the mixture can be used to make paving concrete, leveling plaster or self-leveling fluid mortar or concrete.
- the present invention precisely describes the associations of phenolic derivative / silica or phenolic derivative / polymer or phenolic derivative / superplasticizer, whether in solid or liquid form, but it also includes ternary or quaternary associations of phenolic derivative / silica and / or resin and / or superplasticizer.
- the adjuvants tested are as follows (the quantities are expressed as% of the weight of the cement): a) reference: GLENIUM 27 1 0.5% b) TIRON 2 0.1% c) pyrocatechol 0.1% d) SALICYLIC ACID 0.1% e) 5-aminosalicylic acid 0.1%
- GLENIUM is a modified polycarboxylic ether from M.B.T (S.K.W).
- 2 TIRON is the disodium salt of 4,5-dihydroxy-1, 3-benzenedisulfonic acid.
- Table (I) Rheological characterization of paving concrete formulations, containing phenolic derivatives.
- CATECHOL leads to a tightening phenomenon of the dough, which can be linked to an acceleration of the setting phenomenon.
- GLENIUM 27 leads to the best rheological characteristics, but this seems partly linked to an air entrainment phenomenon (see density values of fresh pasta).
- TIRON achieves the best performance, whatever the measurement deadline.
- the density of the hardened test pieces was measured after 1, 2, 7 and 28 days, after removing the test pieces from their storage water, drying on the surface using absorbent paper, then conditioning for 3 hours in the open air.
- BEVALOID 770 DD is a polyglycol adsorbed on silica.
- VICAT socket is made according to standard NF-P-15-431.
- Example 3 The interest lies in the improvement of mechanical performance, linked to the lowering of the dosage of aluminous cement (used in combination with Portland cement).
- CULMINAL 8121 is a cellulose ether, methylhydroxypropylcellulose with a viscosity of 20,000 cps measured on a 2% aqueous solution,
- CULMINAL 8121 is also a cellulose ether, methylhydroxyehercellulose with a viscosity of 14,000 cps measured on a 2% aqueous solution,
- the phenolic adjuvants used are the following:
- the spreading values are improved, both compared to the control mortar (without adjuvant), and compared to the mortar containing the slurry "RHOXIMAT CS 60 SL" alone.
- the objective is to improve the rheological properties, while benefiting from the resistance gain generated by the phenolic compound (Table II).
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001231929A AU2001231929A1 (en) | 2000-01-28 | 2001-01-29 | Compositions based on phenolic derivatives and their use as mineral binder additives |
EP01903987A EP1252119A1 (fr) | 2000-01-28 | 2001-01-29 | Compositions a base de derives phenoliques et leur utilisation comme adjuvants des liants mineraux |
US10/182,071 US20030162866A1 (en) | 2000-01-28 | 2001-01-29 | Compositions based on phenolic derivatives and their use as mineral binder additives |
PL01356835A PL356835A1 (en) | 2000-01-28 | 2001-01-29 | Compositions based on phenolic derivatives and their use as mineral binder additives |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR00/01133 | 2000-01-28 | ||
FR0001133A FR2804424B1 (fr) | 2000-01-28 | 2000-01-28 | Compositions a base de derives phenoliques et leur utilisation comme adjuvants des liants mineraux |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001055053A1 true WO2001055053A1 (fr) | 2001-08-02 |
Family
ID=8846435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2001/000268 WO2001055053A1 (fr) | 2000-01-28 | 2001-01-29 | Compositions a base de derives phenoliques et leur utilisation comme adjuvants des liants mineraux |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1252119A1 (fr) |
AU (1) | AU2001231929A1 (fr) |
FR (1) | FR2804424B1 (fr) |
PL (1) | PL356835A1 (fr) |
WO (1) | WO2001055053A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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ITTO20080348A1 (it) * | 2008-05-12 | 2009-11-13 | Biopaint S R L | Nuovi agenti antiadesione microbica ecologicamente compatibili per vernici antivegetative |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3415773A (en) * | 1964-09-08 | 1968-12-10 | Ind Res And Mfg Inc | Cementitious compositions |
GB2079739A (en) * | 1980-07-14 | 1982-01-27 | Diamond Shamrock Europ | Additives for cement compositions |
US4351671A (en) * | 1981-04-15 | 1982-09-28 | W. R. Grace & Co. | Water reducing agent with reduced air |
JPS57175765A (en) * | 1981-04-21 | 1982-10-28 | Denki Kagaku Kogyo Kk | Concrete workability improvement |
EP0524019A1 (fr) * | 1991-07-19 | 1993-01-20 | W.R. Grace & Co.-Conn. | Mélanges de ciment hydraulique contenant (dialcanol)aminoalkyl-phenols |
US5321070A (en) * | 1992-01-25 | 1994-06-14 | Degussa Aktiengesellschaft | Adhesion promoters for rubber and synthetic mixtures |
WO1998004919A1 (fr) | 1996-07-25 | 1998-02-05 | The Mclean Hospital Corporation | Utilisation de preseniline-1 pour diagnostiquer la maladie d'alzheimer |
WO1998004918A1 (fr) | 1996-07-26 | 1998-02-05 | Case Western Reserve University | Detection de mycobacteries |
WO1999054292A1 (fr) * | 1998-04-20 | 1999-10-28 | Rhodia Chimie | Nouveaux derives de diphenols sulfones et oxy- ou polyoxyalkylenes et leurs sels correspondants |
WO2001004212A1 (fr) * | 1999-07-07 | 2001-01-18 | Rhodia Chimie | Poudres redispersables dans l'eau contenant des polyphenols |
-
2000
- 2000-01-28 FR FR0001133A patent/FR2804424B1/fr not_active Expired - Fee Related
-
2001
- 2001-01-29 WO PCT/FR2001/000268 patent/WO2001055053A1/fr not_active Application Discontinuation
- 2001-01-29 PL PL01356835A patent/PL356835A1/xx unknown
- 2001-01-29 AU AU2001231929A patent/AU2001231929A1/en not_active Abandoned
- 2001-01-29 EP EP01903987A patent/EP1252119A1/fr not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3415773A (en) * | 1964-09-08 | 1968-12-10 | Ind Res And Mfg Inc | Cementitious compositions |
GB2079739A (en) * | 1980-07-14 | 1982-01-27 | Diamond Shamrock Europ | Additives for cement compositions |
US4351671A (en) * | 1981-04-15 | 1982-09-28 | W. R. Grace & Co. | Water reducing agent with reduced air |
JPS57175765A (en) * | 1981-04-21 | 1982-10-28 | Denki Kagaku Kogyo Kk | Concrete workability improvement |
EP0524019A1 (fr) * | 1991-07-19 | 1993-01-20 | W.R. Grace & Co.-Conn. | Mélanges de ciment hydraulique contenant (dialcanol)aminoalkyl-phenols |
US5321070A (en) * | 1992-01-25 | 1994-06-14 | Degussa Aktiengesellschaft | Adhesion promoters for rubber and synthetic mixtures |
WO1998004919A1 (fr) | 1996-07-25 | 1998-02-05 | The Mclean Hospital Corporation | Utilisation de preseniline-1 pour diagnostiquer la maladie d'alzheimer |
WO1998004918A1 (fr) | 1996-07-26 | 1998-02-05 | Case Western Reserve University | Detection de mycobacteries |
WO1999054292A1 (fr) * | 1998-04-20 | 1999-10-28 | Rhodia Chimie | Nouveaux derives de diphenols sulfones et oxy- ou polyoxyalkylenes et leurs sels correspondants |
WO2001004212A1 (fr) * | 1999-07-07 | 2001-01-18 | Rhodia Chimie | Poudres redispersables dans l'eau contenant des polyphenols |
Non-Patent Citations (4)
Title |
---|
"La Pratique des ciments et des bétons", Michel Vénuat, Edition du Moniteur des Travaux Publics et du Bâtiment, pp. 131-137 |
"Les Bétons, Bases et Données pour leur Formulation", Jacques Baron et Jean-Pierre Olivier pp. 96-120, Ecole Franceise du Béton |
DATABASE WPI Section Ch Week 198249, Derwent World Patents Index; Class A93, AN 1982-05523J, XP002148558 * |
THE JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 60, February 1938 (1938-02-01), pages 309 |
Also Published As
Publication number | Publication date |
---|---|
PL356835A1 (en) | 2004-07-12 |
EP1252119A1 (fr) | 2002-10-30 |
FR2804424B1 (fr) | 2002-11-22 |
AU2001231929A1 (en) | 2001-08-07 |
FR2804424A1 (fr) | 2001-08-03 |
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