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
  • 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
  • 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
  • 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
  • C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
• • 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
  • C04B28/08—Slag 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
  • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
  • C04B2111/00482—Coating or impregnation materials
  • C04B2111/00517—Coating or impregnation materials for masonry
• • 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
  • C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
  • C04B2111/00672—Pointing or jointing 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
  • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
  • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
• • 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

• the invention relates to the field of mortars based on hydraulic binder and aggregates.
• hydraulic binder is understood to mean, where appropriate, collectively, a mixture of several hydraulic binders.
• dry mortar composition (or dry mortar) is understood to mean a pulverulent mixture in which the hydraulic binder, the aggregates and any additives are in the form of powder and of grains.
• mixing step a paste, or wet mortar, is obtained which can be deposited on a substrate.
• the invention relates more particularly to adhesive mortars for tile adhesives.
• the wet mortar is placed on a substrate in order to secure the tiling to the latter.
• Adhesive mortars for tile adhesives must meet a number of requirements, relating both to ease of use during tiling and the properties of the hardened mortar after installation.
• Standard EN 12004 requires, for example, a tensile adhesion of at least 0.5 N / mm 2 (class Cl adhesive mortar) or even at least 1 N / mm 2 (class C2 adhesive mortar), even after immersion in water, action of heat or action of freezing and thawing.
• the open time, the maximum time between the gluing of the substrate and the laying of the tiles while maintaining an adhesion of at least 0.5 N / mm 2 must be at least 20 minutes, preferably at least 30 minutes for an extended open time adhesive mortar - denoted "E".
• the transverse deformation according to standard EN 12004 is preferably at least 2.5 mm (SI deformability), or even at least 5 mm (S2 deformability).
• SI deformability preferably at least 2.5 mm
• S2 deformability at least 5 mm
• the setting and hardening time, the feasibility of implementation, the consistency of the wet mortar, the effort to be implemented for the application are also parameters to be taken into account.
• the object of the invention is to propose a dry adhesive mortar composition satisfying the most demanding of the various aforementioned criteria, and more particularly preferably at least of C2E SI class, while ensuring the lowest possible consumption.
• the term “consumption” is understood to mean the mass of dry composition necessary for satisfactorily fixing 1 m 2 of tiling to a support, while meeting the various aforementioned criteria.
• Another object of the invention is to provide an adhesive mortar having a pleasant texture for the applicators, requiring little effort during installation.
• Another aim of the invention is to provide a dry mortar composition ensuring low consumption and pleasant application.
• a dry composition of mortar in particular of adhesive mortar for tile adhesive, comprising a hydraulic binder and aggregates, said hydraulic binder comprising ground granulated blast furnace slag and a cement chosen from Portland cements, aluminous cements and sulphoaluminous cements, said composition having an apparent density of between 0.40 and 0.69 kg.dnr 3 .
• Bulk density (sometimes also called bulk density) is measured according to EN 459-2: 2012. Of Generally in this text, any reference to density should be understood as relating to bulk density or bulk density.
• the apparent density is also that of the dry composition of the mortar, and therefore of the powder mixture, and not the density of the hardened mortar, after mixing and hardening.
• Another subject of the invention is a process for fixing a tile to a substrate, comprising successively mixing the dry adhesive mortar composition for tile adhesive according to the invention with water so as to obtain a wet mortar, applying wet mortar to the substrate, and applying tiles from said tiling to said substrate.
• composition according to the invention is preferably a dry adhesive mortar composition for tile adhesive.
• composition according to the invention may also be a composition of masonry mortar, a composition of mortar for facade plaster, a composition of adhesive mortar for an exterior insulation system, or a composition of under-plaster mortar. for exterior insulation system.
• Exterior insulation systems are also called ETICS (for External Thermal Insulation Composite System). They conventionally include, from the facade to be insulated from the outside, an insulating panel (for example in mineral wool or in expanded polystyrene) glued using an adhesive mortar or mechanically fixed to the facade, then a sub- coating (also called base coat or basecoat) incorporating a reinforcing mesh (for example a glass fiber grid), then a facade coating (or decorative coating).
• ETICS External Thermal Insulation Composite System
• compositions also make it possible to produce, after mixing, a moist mortar which is particularly pleasant and easy to apply for the applicator, requiring little effort, in particular by virtue of its smooth, creamy, slightly foamy texture.
• the amounts indicated in the present text are contents by weight, relative to the amount of dry composition.
• the bulk density of the dry composition is preferably at least 0.45 kg.dnr 3 , in particular at least 0.47 kg.dnr 3 , or even at least 0.50 kg.dnr 3 . It is advantageously at most 0.65 kg.dnr 3 , or even at most 0.62 kg.dnr 3 , and even at most 0.60 kg.dnr 3 .
• the hydraulic binder consists of ground granulated blast furnace slag and a cement chosen from Portland cements, aluminous cements and sulfoaluminous cements.
• the cement is preferably Portland cement.
• the hydraulic binder then comprises Portland cement and crushed granulated blast furnace slag.
• the hydraulic binder even advantageously consists of Portland cement and crushed granulated blast furnace slag.
• the total weight content of hydraulic binder in particular when the hydraulic binder is a preferred binder defined above, is preferably at least 45%, of preferably at least 50%, or even at least 55%. It is normally at most 90%, or even at most 85%, and even at most 80% or at most 70%.
• the dry composition comprises 25 to 60%, in particular from 30 to 50% by weight of Portland cement and 15 to 50%, in particular 18 to 40% by weight of ground granulated blast furnace slag.
• ground granulated blast furnace slag makes it possible to improve the texture and the creamy side of the wet mortar, and to reduce the force provided by the applicator. It also improves traction adhesion after immersion in water and after freeze / thaw as well as open time and transverse deformation.
• the hydraulic binder may also contain metakaolin in order to improve traction adhesion after immersion in water and after freeze / thaw.
• the dry composition preferably comprises a hydraulic binder and lightweight aggregates.
• lightweight aggregate is intended to mean an aggregate having an apparent density of at most 600 kg / m 3 .
• the bulk density of lightweight aggregates is determined in accordance with EN 1097-3: 1998.
• the dry composition preferably comprises at most
• the dry composition can even be free from such aggregates.
• the dry composition can comprise from 2 to 8% by weight of heavy aggregates, in particular of silica sand. Such a quantity, which does not significantly affect the bulk density of the dry composition, improves the internal cohesion and therefore the adhesion, as well as the comfort of installation.
• the composition preferably comprises at least 9%, and even at least 12% or at least 15% by weight of light aggregates. This content is preferably at most 40%, in particular at most 30%, or even at most 25%.
• the maximum size of the light aggregates is preferably at most 0.400 mm, in particular at most 0.315 mm.
• the maximum size is determined by sieving. It is defined as the size of the smallest screen through which all of the material passes.
• the light aggregates comprise, or even consist of, a mixture of hydrophobic expanded perlite, thermosetting polymer powder and hollow silicate particles.
• a combination of aggregates makes it possible to achieve low densities of dry mortar while giving the wet mortar a smooth and supple texture guaranteeing effortless application.
• the performance obtained by combining these lightweight aggregates is better than that obtained by using only one of these aggregates.
• Expanded perlite is silica sand of volcanic origin expanded by heat treatment.
• Perlite should be hydrophobic because regular perlite absorbs too much water.
• the hydrophobic character is obtained in a known manner by applying a coating to the surface of the particles.
• the bulk density of the hydrophobic expanded perlite is preferably at most 150 kg / m 3 , in particular at most 100 kg / m 3 .
• the weight content of hydrophobic expanded perlite in the dry composition is preferably between 3 and 10%, in particular from 3 to 7%.
• the hollow silicate particles are in particular chosen from expanded glass beads and cenospheres. Cenospheres are hollow particles of aluminosilicate produced during the combustion of coal in thermal power plants.
• the apparent density of the cenospheres is preferably at most 400 kg / m 3 , in particular at most 350 kg / m 3 .
• Their maximum size is preferably at most 0.315 mm.
• the bulk density of the expanded glass beads is preferably at most 500 kg / m 3 .
• Their maximum size is preferably at most
• the weight content of hollow silicate particles in the dry composition is preferably between 2 and 20%, in particular between 3 and 15%.
• the thermosetting polymer powder is preferably present in a weight content ranging from 2 to 20%, in particular from 3 to 15%, or even from 4 to 9%. Its maximum size is preferably at most 0.200 mm, in particular at most 0.150 mm.
• the D50 (based on a weight distribution) is preferably at most 0.100mm.
• the bulk density of the thermosetting polymer is preferably at most 500 kg / m 3 .
• the thermosetting polymer powder is preferably a micronized rubber powder, comprising in particular a vulcanized elastomer. It is preferably obtained by grinding used tires. The presence of thermosetting polymer powder, in the preferred contents and sizes, considerably improves the texture of the wet mortar and reduces the application effort.
• thermosetting polymer powder As the thermosetting polymer powder is part of the light aggregates, it is not a powder that can be redispersed in water. A redispersible powder is in fact not a granulate since it disintegrates in the mixing water. The possible and preferred presence of redispersible powder is described later in the text.
• the dry composition preferably comprises at least one additive chosen from wetting agents (in particular in a content of between 0.05 and 0.2%; for example chemically modified alkyl sulfonates), powders of redispersible polymers (in particular in a content of between 0.5 and 20%, preferably between 2 and 10%, and even between 3 and 8%), the hardening accelerators (in particular in a content between 0.1 and 1%, for example calcium formate), thickening agents such as cellulose ethers and starch ethers (in particular in a content of between 0.2 and 0.7%).
• wetting agents in particular in a content of between 0.05 and 0.2%; for example chemically modified alkyl sulfonates
• powders of redispersible polymers in particular in a content of between 0.5 and 20%, preferably between 2 and 10%, and even between 3 and 8%
• the hardening accelerators in particular in a content between 0.1 and 1%, for example calcium formate
• thickening agents such as cellulose ethers and star
• Redispersible polymer powders are powders which make it possible to obtain, after addition of water, a polymeric dispersion.
• the polymer is preferably based on one or more monomers chosen from vinyl esters (in particular vinyl esters of C1-C15 carboxylic acids), (meth) acrylates (in particular of C1-C10 alcohols), aromatics vinyls, alkenes (eg ethylene), dienes and vinyl halides.
• vinyl esters in particular vinyl esters of C1-C15 carboxylic acids
• (meth) acrylates in particular of C1-C10 alcohols
• aromatics vinyls alkenes (eg ethylene), dienes and vinyl halides.
• a particularly preferred combination is a dry adhesive mortar composition for tile adhesive.
• a dry adhesive mortar composition for tile adhesive comprising a hydraulic binder consisting of Portland cement (preferably 25 to 60%) and ground granulated blast furnace slag (preferably 15 to 50%), at most 10% by weight of heavy aggregates (optionally 2 to 8%) , light aggregates consisting of a mixture of hydrophobic expanded perlite (preferably 3 to 10%), micronized rubber powder (2.5 to 10%) and cenospheres or expanded glass beads (3 to 10%), and a redispersible polymer powder (0.5 to 20%).
• the contents indicated are weight contents relative to the weight of dry composition.
• the weight ratio between water and the dry composition also called “mixing rate”, is preferably between 0.45 and 0.55. Such a rate makes it possible to obtain a particularly pleasant texture.
• the substrate is typically a wall or a partition, or a floor, for example a screed.
• the tiles or slabs of the tiling can be of various materials, such as ceramic, stoneware, cement, stone, marble, etc.
• the wet mortar can for example be applied to the substrate, and possibly to the tiles or slabs by means of a glue comb, a float, a trowel or a notched spatula.
• Tables 1 and 2 show the compositions studied, the content of each component being expressed as a percentage by weight relative to the amount of dry composition.
• Cl to C6 adhesive mortars are comparative examples of standard (Cl, C2), lightweight (C3 to C5), or free from blast furnace slag (C6).
• the adhesive mortars 1 to 5 are adhesive mortars according to the invention.
• the slag is a blast furnace slag with a Blaine fineness of 7500.
• the silica sand has a maximum size of 0.6 mm and the limestone filler of 0.25 mm.
• the hydrophobic perlite has a maximum size of 0.04 mm and a bulk density of less than 100 kg / m 3 .
• the powder of rubber 1 has a maximum size of 0.150 mm and a bulk density of less than 500 kg / m 3 .
• the rubber powder 2 has a maximum size of 0.500 mm and a bulk density of less than 450 kg / m 3 .
• the expanded glass powder has a maximum size of 0.100 mm and a bulk density of less than 500 kg / m 3 .
• Cenospheres have a maximum size of 0.315 mm and a bulk density of less than 350 kg / m 3 .
• the accelerator is calcium formate.
• Tables 3 and 4 show the properties described below for each of the examples.
• the bulk density of the dry composition, in the pulverulent state, was measured in accordance with standard EN 459-2: 2012.
• the tables also present a qualitative measure of the appreciation of the smoothness of the wet mortar and of the effort involved in laying the tiles.
• the marks indicated are an average of the marks ranging from 0 to 10 attributed by each member of the panel and relating to the smoothness (velvety, creamy character) of the wet mortar and the absence of effort during its implementation, this last criterion taking into account both the effort to extract the wet mortar from the bucket and the effort to apply it to the substrate using with a notched trowel. Consumption is also an average of consumption measured by panel members. Mixing rates were 0.5 for the examples according to the invention.
• the examples according to the invention show that the consumption of adhesive mortar is very markedly reduced for usage properties (traction adhesion, open time, transverse deformation) at least as good as in the case of comparative adhesive mortars. Adhesives are further improved in terms of texture and effort required for installation.
• Examples 1 and C6 show that the addition of blast furnace slag improves traction adhesion after immersion in water and after freeze / thaw, open time, transverse deformation as well as comfort. deposit.
• the presence of blast furnace slag improves the smoothness of the adhesive mortar and reduces the effort required.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Ceramic Engineering (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Inorganic Chemistry (AREA)
• Materials Engineering (AREA)
• Structural Engineering (AREA)
• Organic Chemistry (AREA)
• Adhesives Or Adhesive Processes (AREA)
• Curing Cements, Concrete, And Artificial Stone (AREA)

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• 2019
  • 2019-05-24 FR FR1905512A patent/FR3096365B1/fr active Active
• 2020
  • 2020-05-20 WO PCT/EP2020/064070 patent/WO2020239576A1/fr unknown
  • 2020-05-20 BR BR112021021266A patent/BR112021021266A2/pt unknown
  • 2020-05-20 SG SG11202112377TA patent/SG11202112377TA/en unknown
  • 2020-05-20 EP EP20726148.8A patent/EP3976552A1/fr active Pending
  • 2020-05-21 AR ARP200101433A patent/AR118973A1/es active IP Right Grant
• 2021
  • 2021-10-22 CL CL2021002773A patent/CL2021002773A1/es unknown

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