EP2981512A1 - Isolationsmörtelzusammensetzung - Google Patents

Isolationsmörtelzusammensetzung

Info

Publication number
EP2981512A1
EP2981512A1 EP14722256.6A EP14722256A EP2981512A1 EP 2981512 A1 EP2981512 A1 EP 2981512A1 EP 14722256 A EP14722256 A EP 14722256A EP 2981512 A1 EP2981512 A1 EP 2981512A1
Authority
EP
European Patent Office
Prior art keywords
mortar
weight
total composition
mortar according
relative
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP14722256.6A
Other languages
English (en)
French (fr)
Inventor
Caroline MIRA PERMANYER
David GONZALO SANZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Weber SA
Original Assignee
Saint Gobain Weber SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Weber SA filed Critical Saint Gobain Weber SA
Publication of EP2981512A1 publication Critical patent/EP2981512A1/de
Pending legal-status Critical Current

Links

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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/14—Minerals of vulcanic origin
    • C04B14/18—Perlite
    • C04B14/185—Perlite expanded
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/20—Mica; Vermiculite
    • C04B14/204—Mica; Vermiculite expanded
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/04—Silica-rich materials; Silicates
    • C04B14/22—Glass ; Devitrified glass
    • C04B14/24—Glass ; Devitrified glass porous, e.g. foamed glass
    • 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
    • C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B14/02—Granular materials, e.g. microballoons
    • C04B14/30—Oxides other than silica
    • C04B14/301—Oxides other than silica porous or hollow
    • C04B14/302—Aerogels
    • 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
    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/04—Macromolecular compounds
    • C04B16/08—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/10—Burned or pyrolised refuse
    • C04B18/105—Gaseous combustion products or dusts collected from waste incineration, e.g. sludge resulting from the purification of gaseous combustion products of waste incineration
    • C04B18/106—Fly ash from waste incinerators
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/14—Waste materials; Refuse from metallurgical processes
    • C04B18/141—Slags
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/14—Waste materials; Refuse from metallurgical processes
    • C04B18/146—Silica fume
    • 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
    • C04B22/02—Elements
    • C04B22/04—Metals, e.g. aluminium used as blowing agent
    • 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
    • C04B22/06—Oxides, Hydroxides
    • C04B22/068—Peroxides, e.g. hydrogen peroxide
    • 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
    • C04B28/10—Lime cements or magnesium oxide 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
    • C04B28/10—Lime cements or magnesium oxide cements
    • C04B28/12—Hydraulic lime
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/08—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding porous substances
    • 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
    • C04B2111/00034—Physico-chemical characteristics of the mixtures
    • C04B2111/00146—Sprayable or pumpable 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
    • 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
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • 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 present invention relates to a lightened insulating mortar and its use in the field of construction for coating and / or treating surfaces or walls of buildings, in particular facades, both for new constructions and for the renovation of existing constructions.
  • Ble particularly relates to a mortar easily applicable to surfaces by means of usual applications, such as for example by pneumatic projection using a mortar pump.
  • TE Outdoor thermal insulation
  • ITE systems conventionally comprise an insulator on which one or more layers of facing plaster are applied. They are generally complex systems that are very thick.
  • the insulating capacities of these systems are in particular a function of the choice of insulating material and its thickness. Sheets of expanded polystyrene with a thickness of between 20 and 500 mm are currently used. The greater the thickness of the plate, the better the insulation. However, too thick insulation results in a loss of floor space and also many additional costs. It is therefore necessary to find a compromise between a material with the best characteristics of soil and the most expensive weights.
  • insulating plaster or mortar incorporates insulating materials such as expanded polystyrene beads or exfoliated vermiculite. They are usually applied in several layers. Even if they allow an improvement of the insulation of the surface on which they are applied, they do not make it possible to reach technical performances equivalent to those of the other techniques and system ITE, and do not make it possible to get rid of the plates insulation. Expanded polystyrene sheets used in conventional ITE systems have a thermal conductivity of about 37 mW / mK. In order for an insulating mortar to achieve similar thermal performance, it would be necessary for it to contain no heat.
  • the present invention has sought to develop a lightweight insulating mortar usable for facade cladding to overcome the drawbacks mentioned above.
  • the insulating mortar according to the present invention has the advantage of combining good thermal insulation properties, comparable to those of expanded polystyrene plates, and good mechanical strength properties, compatible with the applications envisaged. It also has a very good fire resistance, superior to the EPS only plates.
  • the present invention provides an insulating mortar lightened and having a density of less than 300 kg / m 3 in the cured state comprising at least one inorganic binder selected from cement and lime, in an amount between 50 and 95% by weight relative to the total composition of the mortar, at least 1% by weight of a polymeric adjuvant relative to the total composition of the mortar, at least 0.2% by weight of a rheological admixture relative to the total composition of the mortar, optionally aggregates, said mortar comprising at least 70% by volume of leaching fillers having a thermal conduction of less than 55 mW / mK, relative to the composition of the mortar, chosen from expanded polystyrene, aerogels, hollow microspheres of glass, expanded glass beads, cenospheres, vermiculite and perlite and of which at least 10% by weight of the inorganic binder is substituted by a pozzolanic agent.
  • Percentages of binder, polymeric or rheological adjuvant, leaching charges or other fillers and / or additives are given by weight or by volume relative to the total composition of the mortar. Only the percentage of pozzolanic agent is expressed relative to the amount of inorganic binder, since part of it is substituted by this agent.
  • the mortar is lightened and has a density of less than 300 kg / m 3 in the cured state.
  • the density measurement is performed after setting, hardening and drying the mortar.
  • lightlyened mortar it is understood that it is a mortar of low density, and comprising a large amount of air. Relief can be obtained in different ways.
  • composition lightening fillers whose bulk density, that is to say the mass of material contained in a given volume, comprising the volume of interstitial air is conventionally less than 300 kg / m 3
  • another way to alleviate the mortar is used in the form of foam, or by introducing into the composition of a preformed foam, as described for example in patent application WO 2011/095718, or by introducing into its composition of a so-called "porogenic" agent, creating pores during its decomposition as for example described in application EP0485814.
  • the different ways of lightening the mortar can be combined with each other.
  • the mortar according to the present invention comprises at least 70% by volume of leaching fillers having a thermal conductivity of less than 55 mW / m.K., relative to the composition of the mortar.
  • the said lightening fillers are chosen from expanded polystyrene, aerogels, hollow glass microspheres, expanded glass beads, cenospheres, vermiculite and perlite.
  • the term of lightening loads it is understood that it is a component for lightening the mortar, without playing any role of binder.
  • the mortar according to the present invention comprises
  • the composition of the mortar has the advantage of being able to be applied manually and projected onto the surfaces to be coated with conventional projection machines. Ble presents a good maneuverability and makes it possible to obtain coatings having good mechanical resistance, in particular with cracks.
  • the mortar is both lightened and insulating.
  • the solution provided by the present invention is very easy to implement and can in particular be used for existing constructions, particularly in the field of renovation.
  • This mortar composition thus makes it possible to have a low thermal conductivity, without causing a decrease in mechanical performance.
  • the presence of pozzolanic agent in the important proportions described above makes it possible in particular to obtain this compromise.
  • rheological adjuvant advantageously gives the mortar good handling and thixotropic consistency for use in vertical.
  • polymeric adjuvant advantageously gives the mortar the desired mechanical strength, as well as good cohesion.
  • This additive makes it possible in particular to improve the resistance to cracking.
  • the binder making it possible to ensure the cohesion of the various constituents of the mortar and its hardening is a mixture comprising cement and / or lime, and a pozzolanic agent.
  • a pozzolanic agent In order to obtain the desired properties from a thermal and mechanical point of view, it is essential that the amount of pozzolanic agent is sufficient.
  • At least 10% of the inorganic binder selected from cement and lime is substituted by a pozzolanic agent.
  • the total amount of binder present in the mortar composition is between 50 and 95% by weight of the mortar composition.
  • the mortar may comprise a blowing agent for releasing air and thus increasing the porosity of the mortar during its shaping.
  • the decomposition of the blowing agent is generally carried out when this agent comes into contact with a decomposition catalyst.
  • the blowing agent may be based on peroxides, aluminum powder or any other component known for its decomposition capabilities.
  • the presence of this pore-forming agent can be the means of lightening the mortar. It is also possible that the mortar comprises both lightening fillers and a blowing agent.
  • the cement used in the mortar according to the present invention is chosen from Port I and cements, pozzolanic mixture cements possibly comprising fly ash, blast furnace slag, silica fume and / or natural pozzolans, calcined or synthetic materials, aluminous cements, sulphoaluminous cements, crushed industrial residues, belitic cements, alone or as a mixture.
  • the presence of the pozzolanic agent is necessary regardless of the type of inorganic binder used in the mortar to achieve the desired performance. Even if the inorganic binder comprises a pozzolanic mixture cement, at least 10% of this binder is substituted by the pozzolanic agent.
  • the pozzolanic agent is selected from metakaolin, blast furnace slags, fly ash, silica fumes.
  • the pozzolanic agent is chosen from metakaolin and blast furnace slags. These agents have the advantage of being able to react with the free lime generated during the hydration reaction of the cement to form stable hydration products and thus to improve the mechanical properties.
  • the minimum amount of pozzolanic agent to achieve the desired mechanical and thermal performance varies depending on the type of agent. According to one embodiment, at least 25% by weight of the inorganic binder is substituted with metakaolin. According to another embodiment, at least 15% by weight of the inorganic binder is substituted by blast furnace slags.
  • the lime can be hydraulic or aerial.
  • the binder consists of cement, lime and pozzolanic agent in the following proportions: it is a mixture of 20 to 70% by weight of cement, from 0 to 50% by weight of lime and 3 to 50% weight pozzolanic agent, relative to the total composition of the mortar. Even more preferably, the binder consists of a mixture of 30 to 60% by weight of cement, 20 to 40% by weight of lime and 5 to 25% by weight of pozzolanic agent, relative to the total composition of the mortar.
  • the polymeric adjuvant is a redispersible polymer powder and / or a latex.
  • redispersible polymer powder is understood to mean a polymer powder which, when mixed with an aqueous medium, splits into small particles, forming a stable dispersion in water.
  • polymers used in the composition of such a powder mention may be made of vinyl and / or acrylic polymers.
  • latex refers in particular to the latex polymers usually used in building materials.
  • latex means an emulsion or aqueous dispersion of one or more natural or synthetic polymeric substances. For example, elastomeric latexes, thermoplastic latices and thermosetting latices may be mentioned.
  • polyethylene polyisoprene, polystyrene, polyvinyl chloride, polybutadienes, alkali metal polyacrylates, polyacrylic acid, polymethylmethacrylate, polyvinyl acetate and polylaurate.
  • the polymeric adjuvant is at least 2% by weight, preferably at least 7% by weight of the total composition of the mortar.
  • the rheological adjuvant present in the mortar according to the present invention is chosen from cellulose ethers, starch ethers and their mixtures, such as ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methahyl cel I ulose,
  • ⁇ hydroxypropylmethyl cellulose It preferably represents between 0.4% by weight and 1.5% by weight of the total composition of the mortar.
  • the mortar may comprise aggregates, aggregates or sands, playing in particular on the rheology, the thickness, the hardness, the final appearance and the permeability of the mortar. They are generally formed of siliceous sand, limestone and / or if lic-limestone, generally having a particle size of between 100 ⁇ and 5 mm. The rate of such aggregates can represent between 0 and 10% by weight relative to the total composition of the mortar.
  • the mortar may comprise inert fillers, also called fillers, limestone and / or siliceous being generally in the form of powder whose particle size is less than 120 ⁇ . The level of fillers in the mortar composition represents between 0 and 20% by weight relative to the total composition of the mortar.
  • the mortar according to the invention may also comprise additives or adjuvants conferring particular properties. They are chosen from rheological agents such as plasticizers or superplasticizers, water-retaining agents, thickening agents, biocidal protective agents, dispersing agents, pigments, accelerators and / or retarders, hydrophobic agents, and other agents to improve the setting, hardening and / or stability of the mortar or concrete after application, to adjust the color, the workability, the implementation or the impermeability.
  • rheological agents such as plasticizers or superplasticizers, water-retaining agents, thickening agents, biocidal protective agents, dispersing agents, pigments, accelerators and / or retarders, hydrophobic agents, and other agents to improve the setting, hardening and / or stability of the mortar or concrete after application, to adjust the color, the workability, the implementation or the impermeability.
  • the total content of additives typically varies between 0.1 and 5% by weight.
  • the mortar according to the present invention is in the form of a dry mixture, preferably in a ready-to-mix form. Once the mixing with the mixing water is carried out, the mortar thus becomes applicable to the surface to be coated. The application can be done manually or by projection.
  • the mortar according to the present invention has the advantage of being projectable on the surface.
  • the present invention also relates to a coating or wall coating obtained by applying the tempered mortar described above.
  • the coating is deposited on all or part of a support such as a wall or building facade in the form of one or more layers.
  • the total thickness of the coating can vary between 1 and 12 cm.
  • the coating has a compressive strength of at least
  • the coating has a compressive strength of at least 0.4 MPa and a thermal conductivity less than or equal to
  • the support on which the tempered mortar is applied can be made of different materials, such as concrete, brick, plate, cement, polystyrene board, wood, fiber cement, rock wool or glass wool, blocks, blocks, etc.
  • the application can be carried out directly on the support or after application of an adhesion primer if necessary.
  • the coating according to the present invention can be integrated into any external thermal insulation process and meets the safety standards in this field. It has the advantage of being a continuous coating, which avoids thermal bridges. It notably has a durability and an aging compatible with its use as a facade mortar, presenting no degradation or cracks at the end of the aging cycles described by the EOTA guide used for external thermal insulation processes with mortar and / or at the end of the artificial aging tests according to NF T 30-049, NF P 84-402 and / or EN1015-21 standards.
  • Two mortar formulations according to the present invention are made by mixing the various constituents given in Table 1 in a Hobart type mixer.
  • Composition 1 comprises a mineral binder consisting of a mixture of cement, metakaolin (pozzolanic agent) and aerial lime.
  • Composition 2 comprises a mineral binder consisting of a mixture of cement, slag (pozzolanic agent) and hydraulic lime.
  • Composition A1 Composition A2
  • the mortars are prepared by mixing the various constituents with water.
  • the fresh dough is poured into appropriate molds and then matured for 28 days (at a temperature of 22 ° C and 55% relative humidity) before undergoing final drying in an oven at 70 ° C for several days until stability of the mass of the sample (corresponding to the elimination of free water).
  • the thermal conductivity is then determined on 25x25x4 cm samples, using a TCA 300DT conductivity meter from Taurus Instruments GmbH, in accordance with EN NF 12664.
  • Mortar formulations not in accordance with the invention were prepared in the same manner as in Example 1, and are described in Table 3 below.
  • Composition C2 55 0.5 250
  • Composition C3 54 0.36 236
  • Table 4 Composition C1 serves as a reference.
  • the amount of expanded polystyrene beads increases in the formulation of the mortar, it is found that the thermal conductivity is improved since it decreases, to the detriment of the mechanical strength which falls below 0.3 MPa.
  • Composition C6 is a formulation comprising a large quantity of expanded polystyrene beads and also polymeric additives: the thermal conductivity is improved but the mechanical strength does not exceed 0.3 MPa.
  • the amount of metakaolin represents 7% by weight of the total composition: even if the thermal conductivity is improved with respect to the composition C5, the mechanical strength remains around 0.3 MPa.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
EP14722256.6A 2013-04-04 2014-04-02 Isolationsmörtelzusammensetzung Pending EP2981512A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1353034A FR3004177B1 (fr) 2013-04-04 2013-04-04 Composition de mortier isolant
PCT/FR2014/050784 WO2014162097A1 (fr) 2013-04-04 2014-04-02 Composition de mortier isolant

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AR (1) AR095692A1 (de)
BR (1) BR112015024596B1 (de)
FR (1) FR3004177B1 (de)
MY (1) MY189772A (de)
RU (1) RU2662741C2 (de)
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SG11201508191VA (en) 2015-11-27
BR112015024596B1 (pt) 2021-09-08
CN105050981A (zh) 2015-11-11
RU2662741C2 (ru) 2018-07-30
FR3004177A1 (fr) 2014-10-10
MY189772A (en) 2022-03-04
WO2014162097A1 (fr) 2014-10-09
BR112015024596A2 (pt) 2017-07-18
RU2015147154A3 (de) 2018-03-01
RU2015147154A (ru) 2017-05-15
AR095692A1 (es) 2015-11-04
FR3004177B1 (fr) 2015-11-20

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