FR2710634A1 - Mixture with a view to the production of a hydraulic binder - Google Patents
Mixture with a view to the production of a hydraulic binder Download PDFInfo
- Publication number
- FR2710634A1 FR2710634A1 FR9311867A FR9311867A FR2710634A1 FR 2710634 A1 FR2710634 A1 FR 2710634A1 FR 9311867 A FR9311867 A FR 9311867A FR 9311867 A FR9311867 A FR 9311867A FR 2710634 A1 FR2710634 A1 FR 2710634A1
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- FR
- France
- Prior art keywords
- mixture
- reactive charge
- mixture according
- cement
- production
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- 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.)
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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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/008—Cement and like inorganic materials added as expanding or shrinkage compensating ingredients in mortar or concrete compositions, the expansion being the result of a recrystallisation
-
- 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
- C04B28/06—Aluminous 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
Description
L'invention se rapporte à un mélange à base de ciment, de fondu, de polymères, d'adjuvants chimiques et de charges, en vue de la réalisation d d'un liant hydraulique, plus particulièrement, mais non exclusivement destiné à la réalisation de chapes de faible épaisseur. The invention relates to a mixture based on cement, melt, polymers, chemical additives and fillers, with a view to the production of a hydraulic binder, more particularly, but not exclusively intended for the production of thin screeds.
Dans le batiment, il est connu de recouvrir une surface présentant des défauts d'aspect telle une dalle en bêton brut ou un sol partiellement abimé, au moyen d'une chape utilisant un liant hydraulique. In the building, it is known to cover a surface with appearance defects such as a rough concrete slab or partially damaged soil, by means of a screed using a hydraulic binder.
Toutefois ces chapes sont soit très minces de l'ordre de 3 mm à la manière d'un ragréage et ne peuvent constituer une surface d'usure, soit d'épaisseur beaucoup plus importante. However, these screeds are either very thin of the order of 3 mm in the manner of a leveling compound and cannot constitute a wear surface, or of much greater thickness.
Le principal but de ses chapes est de reconstituer une surface plane qui pourra ensuite être éventuellement garnie d'un revêtement de finition suivant les goûts et besoins de l'utilisateur. The main purpose of its screeds is to reconstitute a flat surface which can then be optionally filled with a finishing coating according to the tastes and needs of the user.
Néanmoins, pour des raisons de poids ou risque de fissuration importante, jusqu'à ce jour, soit on effectue un simple ragréage si les défauts sont inférieurs à une valeur donnée de l'ordre de 5 mm, mais au dela de cette valeur on doit remplacer complètement la dalle de béton car, recouvrir celle existante par une nouvelle dalle d'usure, entrainerait un risque de surcharge pour la structure existante. However, for reasons of weight or risk of significant cracking, to date, either a simple patching is carried out if the defects are less than a given value of the order of 5 mm, but beyond this value we must completely replace the concrete slab because, covering the existing one with a new wear slab, would entail a risk of overloading the existing structure.
Pour la réalisation d'une telle chape on étale sur place la composition mise en présence d'eau et qui, après séchage dénommé prise, durcira et présentera une surface libre plane. For the production of such a screed, the composition is placed on site in the presence of water and which, after drying, known as setting, will harden and have a flat free surface.
Pour des raisons pratiques, on souhaite que ces chapes durcissent rapidement notamment pour permettre un usage rapide du sol, par exemple, en premier lieu pour le trafic piétonnier et un peu plus tard pour le passage d'engins mécaniques. For practical reasons, it is desired that these screeds harden quickly, in particular to allow rapid use of the ground, for example, firstly for pedestrian traffic and a little later for the passage of mechanical machinery.
Pour obtenir et la surface plane et le séchage rapide, on utilise d'une part des compositions spécifiques de matériaux à prise rapide et d'autre part qui sont dites autolissantes, c'est à dire que leur viscosité est suffisamment faible pour qu'au moment de leur application sur le support, elles concourent à leur étalement par simple gravité. To obtain both the flat surface and the rapid drying, use is made on the one hand of specific compositions of fast setting materials and on the other hand which are said to be self-leveling, that is to say that their viscosity is sufficiently low so that at the time of their application on the support, they contribute to their spreading by simple gravity.
La viscosité de ces compositions est donc un caractère important à prendre en considération, mais cela peut influer sur la vitesse de prise de la chape. The viscosity of these compositions is therefore an important character to take into consideration, but this can influence the setting speed of the screed.
Les propriétés dites autolissantes de la composition sont en outre considérées à ce jour comme dépendant directement de la forme et de la taille des charges incluses dans le matériau. The so-called self-leveling properties of the composition are also considered to date as directly dependent on the shape and size of the fillers included in the material.
C'est ainsi que l'on emploi généralement des matières de granulométries définies et surtout dépourvues d'arêtes trop importantes. This is how we generally use materials with defined particle sizes and especially without excessively large edges.
C'est ainsi que des produits ayant un aspect lamellaire sont à ce jour écrites dans ces compositions. This is how products having a lamellar appearance are to date written in these compositions.
Avec les compositions connues à ce jour, un des inconvénients de la rapidité de la prise est qu'elle favorise la fissuration de la chape. With the compositions known to date, one of the drawbacks of the speed of setting is that it promotes cracking of the screed.
L'évaporation trop rapide de l'eau crée, en effet, aussi un retrait rapide provoquant ces fissurations qui constituent des amorces de dégradation de la chape. The too rapid evaporation of the water creates, in fact, also a rapid withdrawal causing these cracks which constitute primers of degradation of the screed.
Dans le domaine des constructions en béton, c'est à dire en agrégat de gravier, de sable et de liant, en présence d'eau il est connu, pour augmenter la résistance chimique des pièces préfabriquées en béton généralement étuvées d'utiliser dans le béton un liant siliceux constitué par une modification cristalline de la silice à savoir de la tridymite ou de la cristobalite. In the field of concrete constructions, that is to say aggregate of gravel, sand and binder, in the presence of water it is known to increase the chemical resistance of prefabricated concrete parts generally steamed to use in the concrete a siliceous binder consisting of a crystalline modification of silica, namely tridymite or cristobalite.
Ce souci de résistance chimique n'est pas primordial dans le domaine des liants hydrauliques à base de résine. This concern for chemical resistance is not essential in the field of resin-based hydraulic binders.
Il est spécifique au domaine des constructions en béton, lesquels bétons ne peuvent convenir pour des chapes minces. It is specific to the field of concrete constructions, which concretes are not suitable for thin screeds.
Du fait de la nature différente des deux liants un produit, adjuvant ou charge, connu pour le béton, n'est donc pas de nature à produire un rôle comparable dans un liant à base de résine. Due to the different nature of the two binders, a product, adjuvant or filler, known for concrete, is therefore not capable of producing a comparable role in a resin-based binder.
Dans la fabrication de liant à base de résine, on fait appel outre à la résine, à un ciment, à un fondu, à du sable, à des sulfates de calcium, à des adjuvants et à des pigments. In the manufacture of resin-based binder, in addition to the resin, a cement, a melt, sand, calcium sulphates, adjuvants and pigments are used.
Un des résultats que vise l'invention est une composition du type précité plus haut qui, destinée à réaliser des chapes minces, offre une vitesse de prise accélérée et qui néanmoins permet l'élimination du phénomène de fissuration. One of the results targeted by the invention is a composition of the aforementioned type which, intended for producing thin screeds, offers an accelerated setting speed and which nevertheless allows the elimination of the cracking phenomenon.
A cet effet, elle a pour objet une telle composition de liant notamment à base de polymères, d'adjuvants chimiques et de charges notamment caractérisée en ce qu'elle comprend en outre une charge réactive constituée de matériau lamellaire agissant notamment comme rétenteur d'eau, agent anti-retrait et d'augmentation des échanges ioniques, laquelle charge est obtenue par la calcination de la silice à une température de l'ordre de 1200 à 16000 Celsius. To this end, it relates to such a binder composition, in particular based on polymers, chemical adjuvants and fillers, in particular characterized in that it also comprises a reactive filler consisting of lamellar material which acts in particular as a water retentive , anti-shrinkage agent and for increasing ion exchange, which charge is obtained by calcining the silica at a temperature of the order of 1200 to 16000 Celsius.
L'invention sera bien comprise à l'aide de la description ci-après faite à titre d'exemple non limitatif en regard du dessin ci-annexé qui représente schématiquement
- Figure 1 : vue en coupe d'un support portant une chape mince,
- Figure 2 : dispositif pour la réalisation d'un mélange selon l'invention.The invention will be better understood with the aid of the description below given by way of nonlimiting example with regard to the attached drawing which schematically represents
- Figure 1: sectional view of a support carrying a thin yoke,
- Figure 2: device for producing a mixture according to the invention.
En se reportant au dessin, on voit que pour réaliser une surface plane 1 sur un support 2 non plan, tel une dalle en bêton abimée, on fait appel à une chape 3 mince que l'on coule sur le support. Referring to the drawing, it can be seen that in order to produce a flat surface 1 on a non-planar support 2, such as a damaged concrete slab, use is made of a thin screed 3 which is poured onto the support.
Cette chape mince a généralement une épaisseur de l'ordre de 5 à 15 mm
Elle est réalisée à partir d'une composition 11 de matériaux mettant en oeuvre un liant résineux 4, un ciment 5, un fondu 6, des charges 7,8,9,10, telles du sable 7 et des adjuvants chimiques 8, tels du sulfate de calcium ainsi qu'éventuellement des pigments 9.This thin screed generally has a thickness of the order of 5 to 15 mm
It is produced from a composition 11 of materials using a resinous binder 4, a cement 5, a melt 6, fillers 7,8,9,10, such as sand 7 and chemical adjuvants 8, such as calcium sulfate and possibly pigments 9.
Pour son application, la composition de matériaux doit pouvoir être qualifiée de pompable et d'autolissante à l'inverse d'un mortier dont la viscosité est trop importante pour mériter ces qualificatifs
Le liant 4 résineux est de préférence un matériau de la famille des polymères et par exemple des polymères vinylique, acrylique, styrène acrylique, styrène butadiène, latex, époxidique ou poluyréthane.For its application, the composition of materials must be qualified as pumpable and self-leveling unlike a mortar whose viscosity is too high to deserve these qualifiers
The resinous binder 4 is preferably a material from the family of polymers and for example vinyl, acrylic, styrene acrylic, styrene butadiene, latex, epoxidic or polyurethane polymers.
Le fondu 6 est un ciment alumineux. The melt 6 is an aluminous cement.
Selon la caractéristique essentielle de l'invention, le mélange 11 comprend en outre une charge réactive 10 constituée de matériau lammellaire agissant notamment comme retenteur d'eau et agent anti-retrait, laquelle charge est obtenue par la calcination de la silice à une température de l'ordre de 1200 à 1600O Celsius
La charge réactive obtenue qui présente notamment un aspect lamellaire permet d'augmenter la surface d'échange ioniques qui contribue tant au phénomène de rétention d'eau que d'accélération de la prise.According to the essential characteristic of the invention, the mixture 11 also comprises a reactive charge 10 consisting of lammellar material which acts in particular as a water retentant and anti-shrinkage agent, which charge is obtained by calcination of the silica at a temperature of around 1200 to 1600O Celsius
The reactive charge obtained which in particular has a lamellar appearance makes it possible to increase the ion exchange surface which contributes both to the phenomenon of water retention and to acceleration of the setting.
La silice est de préférence apportée sous forme de galets de silex de mer. The silica is preferably provided in the form of pebbles of sea flint.
Le produit obtenu est le résultat d'une transformation de la silice cryptocristalline et amorphe. The product obtained is the result of a transformation of cryptocrystalline and amorphous silica.
La charge réactive contient entre 30 % et 60 % en poids de cristobalite. The reactive charge contains between 30% and 60% by weight of cristobalite.
Avantageusement, le pourcentage de la charge réactive est compris entre 10 et 40 % en poids de la composition finale sèche. Advantageously, the percentage of the reactive charge is between 10 and 40% by weight of the final dry composition.
On obtient ainsi une composition qui permet d'accélerer la vitesse de prise de la chape de 30% et c'est ainsi que la mise en service du trafic piétonnier peut avoir lieu environ 4 heures après la confection de la chape et une utilisation par des véhicules 24 heures après la pose. A composition is thus obtained which makes it possible to accelerate the setting speed of the screed by 30% and this is how the entry into service of the pedestrian traffic can take place approximately 4 hours after the making of the screed and use by vehicles 24 hours after installation.
La charge réactive joue un rôle de catalyseur pour accélérer la prise de la composition et de rétenteur d'eau qui est ensuite redistribuée lentement au mélange pour éviter la fissuration des chapes. The reactive charge acts as a catalyst to accelerate the setting of the composition and retains water which is then slowly redistributed to the mixture to avoid cracking of the screeds.
De par cette rétention et cette redistribution d'eau, le retrait se fait sur un temps plus long. Due to this retention and this redistribution of water, the withdrawal takes place over a longer time.
Avantageusement, un exemple de composition pour la réalisation de chape comprend en pourcentage de poids total de matière sèche
- 5 à 10 % de ciment,
- 15 à 20 % de fondu,
- 20 à 25 % de sable,
- 3 à 5 % de sulfate de calcium,
- 1 à 3 % de liant résineux
- 2 % de pigment
- 2 % d'adjuvant et
- 10 à 40 % de charge réactive.Advantageously, an example of composition for making a screed comprises as a percentage of the total weight of dry matter
- 5 to 10% cement,
- 15 to 20% of fade,
- 20 to 25% sand,
- 3 to 5% of calcium sulphate,
- 1 to 3% resinous binder
- 2% pigment
- 2% adjuvant and
- 10 to 40% of reactive charge.
Avantageusement, la granulomètrie de la charge réactive sera comprise entre 0,5 et 1,5 mm, mais une granulométrie plus large est possible par exemple jusqu'à 3 mm. Advantageously, the particle size of the reactive charge will be between 0.5 and 1.5 mm, but a larger particle size is possible for example up to 3 mm.
Cette granulométrie sera de préférence au dessus de 0,05 mm. This particle size will preferably be above 0.05 mm.
La matière sèche est considérée comme la matière dépourvue d'eau cristalline. Dry matter is considered to be matter without crystal water.
On peut réaliser ainsi des chapes minces qui ne sont pas trop lourdes pour les structures existantes et qui constituent une surface d'usure. It is thus possible to produce thin screeds which are not too heavy for existing structures and which constitute a wear surface.
Une composition intéressante comprend
- 13,0 % de dispersion aqueuse de résine époxyde liquide
- 10,0 % d'adduct polyaminoamide à l'eau
- 5,0 % d'eau
- 7,0 % de ciment
- 12,0 % de fondu
- 18,0 % de sable
- 3,5 % de sulfate de calcium
- 1,5 % de pigment
- 1,5 % d'adjuvants
- 28,5 % de charge réactive An interesting composition includes
- 13.0% aqueous dispersion of liquid epoxy resin
- 10.0% polyaminoamide water adduct
- 5.0% water
- 7.0% cement
- 12.0% fade
- 18.0% sand
- 3.5% calcium sulfate
- 1.5% pigment
- 1.5% of adjuvants
- 28.5% reactive charge
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9311867A FR2710634B1 (en) | 1993-09-29 | 1993-09-29 | Mixing for the production of a hydraulic binder. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9311867A FR2710634B1 (en) | 1993-09-29 | 1993-09-29 | Mixing for the production of a hydraulic binder. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2710634A1 true FR2710634A1 (en) | 1995-04-07 |
| FR2710634B1 FR2710634B1 (en) | 1996-12-13 |
Family
ID=9451559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9311867A Expired - Fee Related FR2710634B1 (en) | 1993-09-29 | 1993-09-29 | Mixing for the production of a hydraulic binder. |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2710634B1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1840566A (en) * | 1927-11-17 | 1932-01-12 | Rubin David | Waterproofing compound for cement and concrete |
| DE967758C (en) * | 1953-06-26 | 1957-12-12 | Gen Refractories Ltd | Method of burning flint and making silica stones |
| AT305129B (en) * | 1971-01-27 | 1973-02-12 | Laengle Josef | Process for improving the properties of concrete made from hydraulic binder, sand and water |
| GB1433138A (en) * | 1972-06-05 | 1976-04-22 | Walley N | Cementitious compositions |
| FR2421152A1 (en) * | 1978-03-31 | 1979-10-26 | Venditti Gaetan | Base compsn. for mixing with cement for coating prodn. - comprises water retention agent, plasticiser, impermeabilising agent, air entraining agent, self smoothing agent and adhesive |
| JPS62128957A (en) * | 1985-11-25 | 1987-06-11 | 松下電工株式会社 | Manufacture of inorganic board |
-
1993
- 1993-09-29 FR FR9311867A patent/FR2710634B1/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1840566A (en) * | 1927-11-17 | 1932-01-12 | Rubin David | Waterproofing compound for cement and concrete |
| DE967758C (en) * | 1953-06-26 | 1957-12-12 | Gen Refractories Ltd | Method of burning flint and making silica stones |
| AT305129B (en) * | 1971-01-27 | 1973-02-12 | Laengle Josef | Process for improving the properties of concrete made from hydraulic binder, sand and water |
| GB1433138A (en) * | 1972-06-05 | 1976-04-22 | Walley N | Cementitious compositions |
| FR2421152A1 (en) * | 1978-03-31 | 1979-10-26 | Venditti Gaetan | Base compsn. for mixing with cement for coating prodn. - comprises water retention agent, plasticiser, impermeabilising agent, air entraining agent, self smoothing agent and adhesive |
| JPS62128957A (en) * | 1985-11-25 | 1987-06-11 | 松下電工株式会社 | Manufacture of inorganic board |
Non-Patent Citations (1)
| Title |
|---|
| CHEMICAL ABSTRACTS, vol. 107, no. 16, 19 October 1987, Columbus, Ohio, US; abstract no. 139934d, page 361; * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2710634B1 (en) | 1996-12-13 |
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Effective date: 20080531 |