EP3535224A1 - Systeme constructif multicouche et isolant d'un batiment - son procede de fabrication -composition seche utilisable dans cette fabrication - Google Patents
Systeme constructif multicouche et isolant d'un batiment - son procede de fabrication -composition seche utilisable dans cette fabricationInfo
- Publication number
- EP3535224A1 EP3535224A1 EP17800910.6A EP17800910A EP3535224A1 EP 3535224 A1 EP3535224 A1 EP 3535224A1 EP 17800910 A EP17800910 A EP 17800910A EP 3535224 A1 EP3535224 A1 EP 3535224A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- binder
- cements
- hardened
- water
- dry
- 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
Links
Classifications
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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
- 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
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/248—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork from specific plants, e.g. hemp fibres
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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
- 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
- C04B16/02—Cellulosic materials
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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
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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
- C04B28/10—Lime cements or magnesium oxide cements
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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
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/12—Hydraulic lime
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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
- 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
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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
- 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
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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
- 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
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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
- 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
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
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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
- 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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/60—Flooring materials
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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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B2001/742—Use of special materials; Materials having special structures or shape
- E04B2001/745—Vegetal products, e.g. plant stems, barks
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
- E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
- E04C2/288—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
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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
- the technical field of the invention is that of constructive systems, multilayer and insulating implemented for the realization of buildings.
- the systems concerned by the invention are of the type of those comprising at least one wall associated with at least one layer of hardened insulation.
- the invention also relates to the raw materials used for the manufacture of the constructive system, in particular the dry compositions of concrete or mortar which are the raw material of the hardened insulating layer.
- a specific binder formulation, the wet forms of these compositions and their preparation, and their applications in the building are also an integral part of the invention.
- the invention also relates to the manufacture of the multilayer insulating construction system as well as the preparation and conditioning of the dry mortar and concrete compositions.
- the invention also includes kits for manufacturing said constructive systems and in particular their insulation layer, as well as buildings made using this constructive system.
- the constructive systems according to the invention comprise at least one wall, of whatever nature, and at least one layer of hardened insulation.
- the latter is obtained after drying of a wet formulation obtained by mixing with water (mixing) a dry composition of construction comprising at least one binder and aggregates, as well as any functional additives.
- the binders are inorganic and / or organic, and preferably inorganic.
- the granules more especially considered in the context of the invention are biosourced aggregates, which replace or supplement mineral aggregates.
- the biosourced aggregates are derived from biomass of plant or animal origin, preferably plant-based.
- These building compositions are concretes or mortars.
- the associated wall is the support on which is applied the wet composition or the wall against which is leaned the hardened insulating layer formed by molding in a mold or a formwork.
- the constructive systems according to the invention are part of the current regulatory and political context of reducing the environmental footprint of buildings, reducing the consumption of fossil raw materials, limiting greenhouse gas emissions and reducing greenhouse gas emissions. promoting the economy of sustainable development.
- Vegetable raw materials already used in the building and construction sector include: vegetable fiber wool, recycled natural textiles, cellulose wadding, hemp or hemp straw, hemp in other forms, flax shives, straw in the form of boots or compressed, wood in all its forms, etc.
- the aggregates / vegetable fillers are generally characterized by a high water absorption capacity linked to their highly porous structure.
- the chenevot, granulate / load resulting from the hemp stalk is capable of absorbing a quantity of water up to 3-4 times its weight.
- building systems In addition to these thermal and sound insulation specifications, building systems must also meet certain mechanical characteristics. In particular, it is very important that these building systems have the ductility required to withstand the dimensional changes to which buildings are subjected, given the thermal, hygrometric and seismic environmental constraints. Notwithstanding the drawbacks related to the very strongly hydrophilic and hyperabsorbent nature of plant biobased aggregates known hitherto, the inventors have postulated, as part of an inventive step, that it was not impossible to turn these disadvantages into advantages, especially for the quest for improvement of the mechanical properties of building construction systems.
- the invention aims to satisfy at least one of the following objectives:
- a dry mortar / concrete composition comprising vegetable raw materials, for producing a hardened insulating layer, integrated in the constructive system referred to in the above objectives, through an intermediate step in which a composition is involved moist of suitable viscosity allowing a simple deposit and homogeneous on a support, and / or a simple casting is homogeneous in a mold or a formwork, and this in a repeatable manner.
- the inventors have managed to select a particular class of biosourced aggregates of vegetable origin, suitable for constituting a hardened insulating layer, combined with at least one wall, for form an improved building construction system, meeting the above objectives, among others.
- the present invention thus relates, in a first of its aspects, to a multilayer and insulating constructive system of a building, characterized in that
- this system comprises at least one wall associated with at least one layer of hardened insulation
- the maximum thickness of the hardened insulating layer is between 1 and 60 cm
- the cured insulator has an Apparent Density (MVA) in kg / m 3 less than or equal to 450; 300; 250; 200; 150; 100; and more preferably between 50 and 300; 150 and 250;
- VMA Apparent Density
- this hardened insulating layer is prepared by mixing with water of a dry composition (d) comprising:
- At least one binder including:
- ⁇ -A2- optionally at least one water retaining agent
- VMA Apparent Bulk Weight
- this composition having a ratio A / B [mass of binder -A- dry in kg-] / [mass of filler - B- dry in kg], included between - in increasing order of preference - I and 15; l and 10; 1 and 8; 1 and 6.
- this advantageous constructive system could be obtained by counter intuitively choosing a particular biobased granulate B and combining this component B with a binder A, in suitable quantities and in such a way as to obtain MVA of hardened insulation within a given range.
- this constructive system is in the form of prefabricated elements intended to be assembled on site for the construction of the building or is manufactured on site for the construction of the building.
- this constructive system is in the form of unitary masonry elements, preferably standardized and prefabricated, intended to be assembled on site for the construction of the building or parts of the building, preferably walls or walls. walls.
- the hardened insulating layer is interposed between the associated wall and at least one other wall and / or at least one layer of a material different from the hardened insulator, this other wall and / or this layer being optionally a finished wall or a finishing coat.
- the percentage of rod marrow in the biobased granulate is (in% by weight on a dry basis and in increasing order of preference)> 15; > 20; > 30; > 40; > 50> 60; > 70; > 80; > 90; > 95; > 99.
- the constructive system according to the invention can be a thermal insulation system
- the invention relates to unitary masonry elements, in particular those referred to above, preferably standardized and prefabricated, and intended to be assembled on site for the construction of the building or parts of the building, preferably walls or walls,
- each element comprises at least one wall associated with at least one layer of hardened insulation
- the maximum thickness of the hardened insulating layer is between 1 and 60 cm
- the cured insulator has an Apparent Density (MVA) in kg / m 3 less than or equal to 450; 300; 250; 200; 150; 100; and more preferably between 50 and 300; 150 and 250;
- this hardened insulating layer is prepared by mixing with water of a dry composition (d) comprising:
- At least one binder including:
- ⁇ -Al- at least one hydraulic or aerial binder
- VMA Apparent Bulk Weight
- the invention relates to a dry composition (d) which is useful in particular in the system according to the invention, characterized in that it contains at least one biobased B granule based on sunflower stem and / or corn stalk and / or rapeseed stalk having an Apparent Bulk Weight (MVA) in kg / m3 of less than 110; preferably between 10 and 80; the MVA being defined according to the method M1.
- a dry composition (d) which is useful in particular in the system according to the invention, characterized in that it contains at least one biobased B granule based on sunflower stem and / or corn stalk and / or rapeseed stalk having an Apparent Bulk Weight (MVA) in kg / m3 of less than 110; preferably between 10 and 80; the MVA being defined according to the method M1.
- VMA Apparent Bulk Weight
- This dry composition can form, after mixing with water, a wet composition capable of being used in the conventional processes of building trades, namely pumping, the projection on a vertical support, inclined still horizontal (to floor or height), casting for molding in a mold or in a formwork or for making a screed on a floor, and without losing the desired insulating character for the insulating layer constituting the constructive system according to the invention. 'invention.
- the invention relates to a kit comprising separately a packaging containing a biobased granule B as referred to above and a packaging containing a binder A as referred to above, as well as a package insert. use of the kit for the manufacture of hardened insulation layers, in the construction system according to the invention.
- the invention in another of its aspects relates to a method of manufacturing the constructive system according to the invention.
- any singular denotes indifferently a singular or a plural.
- a prefabricated or in situ manufactured structure by application of the wet concrete or mortar composition, on horizontal surfaces by spreading, on vertical surfaces by projection,
- “Dry composition” a mixture of powders and biosourced aggregates, which may contain granules of mineral origin powder, intended to be mixed with water, to obtain cured insulation after drying and curing.
- the powders and in particular the biosourced aggregates which enter into the "dry composition” may contain residual quantities of water which neither affect the properties of the "dry composition", such as its flow properties, nor the properties of the hardened insulator, such as its durability.
- dry composition is here defined in contrast with the name “wet composition” which refers to the composition obtained by mixing the “dry composition” with water.
- stem means the stem of the plant constituting the raw material of the biosourced aggregates, this stem is constituted by a bark and a heart formed by the marrow.
- the attached figure 8 shows on the left picture a sunflower stem T seen in cross section. The darker peripheral part is the bark (E) and the lighter central part is the marrow (M).
- “marrow” of the “stem” core of the MVA stem less than 60 kg / m 3 .
- “marrow particles” means non-acicular (roughly spherical) or acicular particles with an MVA ⁇ 60 kg / m3.
- the photo on the right of Figure 8 and the left part of the photo of Figure 9 attached show sunflower marrow particles.
- Figure 9 shows on the right side of the photo non-acicular particles of corn marrow.
- FIG. 10B shows acicular particles of rapeseed marrow.
- bark particles acicular particles (rods) having an MVA> 1 10 kg / m3.
- Figure 8 attached shows the central photo of sunflower bark particles.
- seed particles include bark particles (rods) and marrow particles.
- the "size" of the biosourced charge (B) particles corresponds to the largest of the three dimensions of each particle.
- “mortar” or “concrete” means indifferently a dry or wet or hardened mixture of one or more organic and / or mineral binders, fillers of mineral and / or vegetable origin and optionally of oils and / or additives and / or or adjuvants;
- “Insulating” mortar means a mortar graded T "mortar for thermal insulation coating” following ⁇ 998-1 or a concrete in the form of a layer whose thermal conductivity ⁇ , measured after complete drying according to the so-called plate method hot reference NF EN 12664, is less than or equal to -en W / mK and in ascending order preferably -0.2; 0.15; 0.12; 0.1; 0.08; 0.07;
- “Complete drying” means a stabilization of the mass of the hardened mortar, at plus or minus 3%, over 24 hours, for storage at 50% relative humidity; • A particle charge has a size less than or equal to X mm, if its d90 is less than or equal to X mm; The term “d90” refers in this specification to the particle size criterion, wherein 90% of the particles are smaller than “d90". The particle size is measured by sieving according to EN 12192-1; ⁇ "Approximately” or “substantially” means plus or minus 10%, or within plus or minus 5%, based on the unit of measurement used;
- polymer denotes indifferently “homopolymer” and “copolymer” and / or mixture of polymers
- Figure 1 is a longitudinal section diagram of a 1st embodiment of the construction system (wall) of the invention.
- Figure 2 is a longitudinal section diagram of a 2nd embodiment of the construction system (wall) of the invention.
- Figures 3A & 3B are diagrams in longitudinal section of two variants of a 3rd embodiment of the construction system (wall) in renovation of the invention
- Figures 4A, 4B & 4C are schematic longitudinal sectional view of three variations of a 4th embodiment of the construction system (wall) in new construction according to the invention
- Figure 5 is a longitudinal section diagram of a 5th embodiment of the construction system (wall) in new construction according to the invention.
- Figures 6A & 6B are schematic longitudinal sectional view of a ceiling insulation variant (6A) and a roof insulation variant (6B), a 6th embodiment of the construction system in new construction or renovation according 'invention;
- Figure 7 is a longitudinal section diagram of a 7th embodiment of the construction system (sol-cap) in new construction or renovation of the invention.
- the attached figure 8 shows on the left picture a sunflower stem T seen in cross section, on the central photo of the sunflower bark particles and on the right photo of the sunflower marrow particles.
- Figure 9 shows sunflower marrow particles on the right and corn marrow particles on the left.
- Figure 10A attached shows rapeseed bark particles.
- FIG. 10B shows particles of rapeseed marrow.
- Fig. 11A shows the sunflower marrow (B granulate) of Example 1
- Figs. 11B & 11C show the mixture of binder A, granulate B and water in Example 1.
- FIGS. 12A 12B & 12C show a constructive system according to example 1.
- FIG. 14 shows the core of the insulating system obtained after an adhesion test according to European Standard ETAG 004, in Example 1.
- FIGS. 15A, 15B, 15C show projections of the insulating mortar to form constructive systems according to the invention in Example 1.
- Figure 16 shows the B granules of corn marrow used in Example 2.
- FIG. 17 gives the evolution of the density of the hardened insulating layer obtained in Examples 3 to 7, as a function of the ratio Granulat [L] / Binder [kg].
- FIG. 18 gives the evolution of the thermal conductivity of the hardened insulating layer obtained in Examples 3 to 7, as a function of the density in the hardened state of the insulating material.
- the construction system according to the invention is designated by the general reference (1) in the accompanying figures.
- the terms "INT” and "EXT” designate respectively the inside and the outside of the construction in FIGS. 1, 2, 3A, 3B, 4A, 4B, 4C & 5. It comprises one or two walls (2, 2i , 2e) vertical carriers (for embodiments 1 to 5) or horizontal (for embodiments 6 and 7), at least one hardened insulating layer (3), optionally at least one topcoat (4, 4i, 4e), and possibly at least one additional insulation layer (5).
- this wall (2, 2i, 2e) is a wall (bearing or not) made of a building material such as filling concrete, cellular concrete, cob, steel (cladding panel), breeze blocks, cut stones, hollow bricks, perforated bricks, solid bricks, thermo-insulating bricks, chopped concrete, wood (logs - panel), as well as the combination of these materials.
- a building material such as filling concrete, cellular concrete, cob, steel (cladding panel), breeze blocks, cut stones, hollow bricks, perforated bricks, solid bricks, thermo-insulating bricks, chopped concrete, wood (logs - panel), as well as the combination of these materials.
- the wall (2, 2i, 2e) of the embodiments 1 to 5 can be manufactured on site, that is to say on the construction site of the building, just before the construction or as and when this construction.
- elements of this wall (2, 2i, 2e) for example panels, can be prefabricated in a dedicated manufacturing site. These elements are then transported to the site and assembled during the construction of the building.
- the hardened insulating mortar layer (3) can be made by spraying a wet composition consisting of a mixture of the dry composition (d) according to the invention with water. Conventionally, this projection is carried out, manually by float, or mechanically with known devices such as screw pump or piston pump, connected to a projection lance.
- the dry composition (des) and the mixing ratio with the water are chosen so that the wet composition adheres and dries on the projection face, namely the outer face of the wall (2). Drying and hardening then take place.
- the layer of hardened insulating mortar (3) can also be prefabricated, for example in the form of panels, fixed by any known and appropriate means on the outer face of the wall (2), for example, bonding and / or screwing and / or pegging .
- an outer finish layer (4e) is applied to the hardened insulating mortar layer (3), while an inner finish layer (4i) is placed on the inner face of the load-bearing wall (2).
- These finishing layers (4i & 4e) can be formed in particular of one or more layers of plaster, and / or one or more layers of paint, plasterboard, plastic blades (eg polycarbonate), of wood, metal, stone, composite, concrete, terracotta, ceramic, tile, glass and combinations thereof.
- the wall (2) vertically is provided on its outer face, of horizontal frames (20) useful for attaching an outer finishing layer (4) arranged parallel to the outer face of the wall (2) and delimiting with the latter an interstitial space occupied in whole or in part by the hardened insulating layer (3).
- this interstitial space comprises the layer of hardened insulating mortar (3) integral with the outer face of the wall (2) and an air gap (5) also acting as an insulator. .
- a further insulating layer (5) is applied to the outer face of the wall (2).
- This insulating layer (5) may consist of various insulating materials, in particular based on mineral insulation (in particular glass wool, rockwool, cellular glass, perlite, vermiculite, expanded clay and their mixtures), and / or natural insulation (in particular cork, wood fiber, hemp, flax fiber, sheep wool, duck feathers, coconut fibers, reed boards, cellulose wadding, cotton wool, straw, cob and mixtures thereof ), and / or synthetic insulation (in particular expanded polystyrene, extruded polystyrene, polyurethane, phenolic foam and mixtures thereof).
- mineral insulation in particular glass wool, rockwool, cellular glass, perlite, vermiculite, expanded clay and their mixtures
- natural insulation in particular cork, wood fiber, hemp, flax fiber, sheep wool, duck feathers, coconut fibers, reed boards, cellulose wadding, cotton wool, straw, cob and mixtures thereof
- the construction system according to the variant of Figure 3A of this 3rd embodiment further comprises from the inside to the outside from the insulating layer (5), a layer of the era exterior finish (4e 1), the cured insulating mortar layer (3) and a 2 nd layer exterior finish (4e 2).
- An inner finish layer (4i) is applied to the inner face of the load-bearing wall (2).
- the construction system according to the variant of Figure 3B of this 3rd embodiment further comprises from the inside to the outside, from the supporting wall (2), a layer ere the interior fitting (4i 1) the hardened mortar layer insulation (3) and a 2 nd layer of interior finish (4i 2).
- An outer finish layer (4e) is applied to the outer face of the additional insulation layer (5).
- Figure 4 shows the 4th embodiment according to three variants declined 4A, 4B, 4C, in which:
- the wall (2) is connected by its outer face to an outer vertical support (7e) by means of horizontal struts (6);
- the wall (2) is a hollow supporting structure comprising two inner panels (2i) & outer (2e) connected to each other by horizontal bracing elements (8).
- an outer finish layer (4e) is applied to the outer face of the outer vertical support (7e).
- it is an inner finishing layer (4e) placed on the inner face of the inner vertical support (7i).
- it is an outer finish layer (4th) and inner finish layer (4i) which are placed on the inner and outer faces of the inner (2i) & outer panels respectively.
- topcoats have a similar nature, manufacture and pose as those described above for the first three exemplified embodiments.
- the 5th embodiment of the construction system shown in Figure 5 comprises an inner wall 2i and a second outer wall connected to each other by spacers 8, so as to delimit a casing occupied by the layer hardened insulator (3) as described above.
- the wall (2) of the construction system is a concrete slab cast in situ, precast concrete elements (floor slabs, prestressed concrete) concrete slabs or a combination of these materials.
- the hardened insulating layer (3) is applied by spraying, on the underside of the wall (2), a wet composition consisting of a mixture of the dry composition (d). ) according to the invention with water. So Conventional, this projection is performed manually by float, or mechanically with known devices such as screw pump or piston pump, connected to a projection lance.
- the dry composition (des) and the mixing ratio with the water, are chosen so that the wet composition adheres and dries on the projection face, namely the outer face of the wall (2). Drying and hardening then take place.
- the hardened insulating layer (3) can also be prefabricated, for example in the form of panels, fixed by any known and appropriate means on the underside of the wall (2) forming a ceiling element, for example gluing and / or screwing and / or pitting.
- the hardened insulating layer (3) may be covered with a finishing layer (4) which is fixed on a horizontal support (7) secured to the wall (2) by means of vertical struts (6) which pass through the hardened insulating layer (3), which is advantageously separated from the horizontal support (7) by an insulating air gap (5).
- the hardened insulating layer (3) is applied eg by casting, between the roof (not shown in FIG. 6B) and the upper face of the wall (2), of a wet composition consisting of a mixture of the dry composition (d) according to the invention with water.
- the hardened insulating layer (3) can also be prefabricated, for example in the form of panels, fixed by any known and appropriate means between the roof and the upper face of the wall (2).
- the lower face of the wall (2) can be covered with a finishing layer (4) which is fixed on a support (7) secured in parallel to this wall (2) by means of spacers (6) which define a blade insulating air (5) between the wall (2) and the support (7).
- the 7th embodiment is a construction system (1) for forming the building floor.
- the wall (2) is a floor made of a building material such as a concrete slab, a wood floor, a cement or anhydrite screed, or a combination of these materials.
- this wall (2) is integral with the hardened insulating layer (3), which is e.g. a light screed or a screed of rubbedage.
- the latter is advantageously covered with a finishing layer (4).
- the nature, manufacture and laying of these layers (3) & (4) are of the same type as those described above for the first six exemplified embodiments.
- the hardened insulating layer (3) can be made by spraying or casting a wet composition consisting of a mixture of the dry composition (d) according to the invention with water. Conventionally, this projection is carried out, manually by float, or mechanically with known devices such as screw pump or piston pump, connected to a projection lance.
- the dry composition (des) and the mixing ratio with the water are chosen so that the wet composition flows and can be spread on the soil properly. Drying and hardening then take place.
- the cured insulation layer (3) can also be prefabricated, for example in the form of panels, fixed by any known and appropriate means on the outer face of the wall (2), for example, gluing and / or screwing and / or pegging .
- the hardened insulating layer has a thermal conductivity ⁇ of less than 0.09 W / m ⁇ K; preferably less than or equal to 0.085 W / m.K.
- This hardened insulating layer is obtained from a dry composition (d) comprising at least one binder -A-, at least one biobased granule -B-.
- the binder -A- is preferably comprises at least one -Al-hydraulic or aerial binder, optionally at least one water-retaining agent -A2- and optionally at least one surfactant -A3 -.
- the binder -Al- is preferably selected from the group consisting of-ideally composed of cements, aerial lime, hydraulic lime, slags, geopolymers, metakaolins, binders with high content of cementitious phases rich in alumina, natural pozzolans, sodium silicates, potassium silicates, lithium silicates, organic binders and mixtures thereof alone or together;
- the cements being advantageously selected from the group comprising - ideally composed of Portland cements, Portland ash cements, Portland pozzolanic cements, Portland cements with combustion silica, masonry cements, quick natural cements, cements expansives, blended white cements, colored cements, finely ground cements, lime-pozzolana cements, supersulfated cements, calcium sulpho aluminate (CSA) cements, calcium aluminate cements ( CAC), natural cements, lime and mixtures thereof in isolation or together.
- CSA calcium sulpho aluminate
- CAC calcium aluminate cements
- the cements are selected from the following species: calcium aluminate cements (CAC), calcium sulpho aluminate cements (CSA), cementitious high content cementitious binders alumina or mixtures of these species alone or together.
- CAC calcium aluminate cements
- CSA calcium sulpho aluminate cements
- cementitious high content cementitious binders alumina or mixtures of these species alone or together.
- the cements are selected from among the following species: quick cements (for example quick natural cements), geopolymer cements, slags, calcium aluminate cements (CAC), cements based on Calcium sulphoaluminate (CSA) or mixtures of these species singly or together.
- quick cements for example quick natural cements
- geopolymer cements for example geopolymer cements
- slags for example calcium aluminate cements
- CAC calcium aluminate cements
- CSA Calcium sulphoaluminate
- the lime can be an air and / or hydraulic lime.
- the target aerated lime is of the type of those complying with the NF EN 459-1 standard, preferably chosen from the group comprising-ideally consisting of-:
- dolomitic lime containing calcium magnesium oxide (CaO MgO) and / or magnesium calcium hydroxide (Ca (OH) 2 Mg (OH) 2) whose sum CaO + MgO is at least 80%, and the MgO content varies from 5% to more than 30%>.
- the aerated lime used can be in various forms such as a paste, a powder or, for quicklime, the rock itself.
- the target hydraulic lime is of the type complying with the NF EN 459-1 standard. Any mixture of lime of any type whatsoever, in any form whatsoever, may contain the composition of the invention
- the -Al-binder may be selected from high alumina-rich cementitious phase cementitious binders or mixtures of these cements or binders taken singly or together. It may be, for example, fast cements, calcium aluminate cements (CAC), calcium sulpho aluminate (CSA) cements, or even more preferably hydraulic binders comprising:
- CACs are cements comprising a C4A3 $, CA, C12A7 mineralogical phase,
- C3A or ClA7CaF2 or mixtures thereof such as, for example, Fondu® cements, sulphoaluminous cements, calcium aluminate cements conforming to European Standard NF EN 14647 of December 2006, the cement obtained from the clinker described in patent application WO2006 / 018569 or their mixtures.
- Sulfoaluminous clinkers are obtained from a mixture of limestone calcium carbonate, bauxite or another source of alumina (for example a dross by-product) and calcium sulphate, which is either gypsum, anhydrite or hemihydrate or mixtures thereof.
- the specific constituent at the end of the manufacturing process is Yeelimite, C4A3 $.
- Prompt cements or cements sulphoaluminates which contain Yeelimite contents of between 3% and 70% which can be marketed by Vicat, Italcementi, Lafarge-Holcim, Polar Bear, Liu Jiu, Readerfast.
- a prompt natural cement consists of a clinker containing
- the binder -Al may be chosen from binders comprising a source of calcium sulphate, preferably chosen from anhydrites, gypsum, calcium half-hydrates, supersulfated cements and their mixtures.
- the water retainer -A2- is provided with a water retention greater than or equal to -in order of increasing order preferably- 50, 60, 70, 80, 90%, according to the method of measuring the M2 retention, the water retainer being preferably selected from polysaccharides, and more preferably still in the group comprising - or more preferably constituted by - cellulose or starch ethers and mixtures thereof; uloses, hydroxyethylcelluloses, hydroxypropylcelluloses, methylhydroxypropylcelluloses, methylhydroxyethylcelluloses and mixtures thereof; modified or unmodified guar ethers and mixtures thereof; or the mixture of these different species.
- the water-retaining agent A2 preferably has a viscosity at 2% in water, measured with the HAAKE rotovisco RV100 viscometer, shear rate of 2.55 s -1 at 20 ° C. between 5000 and 70,000 cp, preferably between 20000 and 50000.
- the water retainer A2 has the property of keeping the mixing water before setting. The water is thus maintained in the mortar or concrete paste, which gives it a very good adhesion and good hydration. To a certain extent, it is less absorbed on the support, the surface release is limited and thus there is little evaporation.
- the surfactants are preferably chosen from:
- anionic surfactants of the type for example alkyl sulphates, alkyl ether sulphates, alkaryl sulphonates, alkyl succinates, alkyl sulpho succinates, alkoyl sarcosinates, alkyl phosphates, alkyl ether phosphates, alkyl ether carboxylates, and alpha olefin sulfonates, preferentially sodium lauryl sulfate,
- polyether polyols iv. polyether polyols, hydrocarbon molecules, silicone molecules, hydrophobic esters,
- alkyl ether sulfonates examples include hydroxyalkyl ether sulfonates, alpha-olefin sulfonates, alkyl benzene sulphonates, alkyl sulphonate esters, alkyl ether sulphates, hydroxy alkyl ether sulphates, alpha olefin sulphates, alkyl benzene sulphates and alkyl sulphate amides, as well as their alkoxylated derivatives (especially ethoxylated (EO) and / or propoxylated (OP)), the corresponding salts or their mixtures.
- EO ethoxylated
- OP propoxylated
- ionic surfactants mention may also be made, in a nonlimiting manner, of saturated or unsaturated fatty acid salts and / or their alkoxylated derivatives in particular (OE) and / or (OP) (for example sodium laurate, palmitate).
- OE saturated or unsaturated fatty acid salts and / or their alkoxylated derivatives in particular (OE) and / or (OP) (for example sodium laurate, palmitate).
- alkylglycerol sulphonates sulphonated methyl and / or sodium laureate derivatives
- alkylglycerol sulphonates sulphonated polycarboxylic acids
- paraffin sulphonates N-acyl N-alkyltaurates
- alkylphosphates alkylsuccinamates
- alkylsulfosuccinates alkylsulfosuccinate monoesters or diesters
- alkylglucoside sulfates alkylglucoside sulfates.
- Nonionic surfactants include, but are not limited to, ethoxylated fatty alcohols, alkoxylated alkylphenols (especially (EO) and / or (OP)), aliphatic alcohols more particularly from 08-022, the resulting products.
- condensation of ethylene oxide or propylene oxide with propylene glycol or ethylene glycol the products resulting from the condensation of ethylene oxide or propylene oxide with the ethylene diamine, alkoxylated fatty acid amides (especially (EO) and / or (OP)), alkoxylated amines (in particular (OE) and / or (OP)), alkoxylated amidoamines (in particular (OE) and / or (OP)), amine oxides, alkoxylated terpene hydrocarbons (especially (OE) and / or (OP)), alkyl polyglucosides, amphiphilic polymers or oligomers, ethoxylated alcohols, sorbitan esters or sorbitan esters ethoxylates.
- alkoxylated fatty acid amides especially (EO) and / or (OP)
- alkoxylated amines in particular (OE) and / or (OP)
- alkoxylated amidoamines in particular (OE
- amphoteric surfactants mention may be made, without limitation, of betaines, imidazoline derivatives, polypeptides or lipoamino acids. More particularly, the betaines that are suitable according to the invention can be chosen from cocamidopropyl betaine, dodecyl betaine, hexadecyl betaine, octadecyl betaine, phospholipids and their derivatives. derivatives, amino acid esters, water-soluble proteins, water-soluble protein esters and mixtures thereof.
- nonionic foaming agent may be associated with at least one anionic or cationic or amphoteric foaming agent.
- amphiphilic surfactants mention may be made, without limitation, of polymers, oligomers or copolymers which are at least miscible in the aqueous phase.
- the amphiphilic polymers or oligomers may have a statistical distribution or a multiblock distribution.
- the amphiphilic polymers or oligomers used according to the invention are chosen from block polymers comprising at least one hydrophilic block and at least one hydrophobic block, the hydrophilic block being obtained from at least one nonionic and / or anionic monomer.
- amphiphilic polymers or oligomers mention may in particular be made of polysaccharides having hydrophobic groups, in particular alkyl groups, polyethylene glycol and its derivatives.
- amphiphilic polymers or oligomers examples include polyhydroxystearate-polyethylene glycol-polyhydroxystearate triblock polymers, branched or unbranched acrylic polymers, or hydrophobic polyacrylamide polymers.
- nonionic amphiphilic polymers more particularly alkoxylated (in particular (EO) and / or (OP)
- the latter are more particularly chosen from polymers of which at least a part (at least 50% by mass) is miscible in water.
- polymers of this type mention may be made, inter alia, of polyethylene glycol / polypropylene glycol / polyethylene glycol triblock polymers.
- the foaming agent used according to the invention is a protein, in particular a protein of animal origin, more particularly keratin, or a protein of plant origin, more particularly a water-soluble protein of wheat, rice, soy or cereal.
- the foaming agent used according to the invention is a protein whose molecular weight is between 300 and 50,000 Daltons.
- the foaming agent is used according to the invention at a content of 0.001 to 2%, preferably 0.01 to 1%, more preferably 0.005 to 0.2% by weight of foaming agent relative to the weight of the binder. . - A4- additional binder
- the composition comprises at least one additional binder -A4-, different from the binder -Al-, and selected from Portland cements, slags, geopolymer cements, natural pozzolans, silicates sodium silicates, potassium silicates, lithium silicates, organic binders or mixtures thereof.
- a Portland artificial cement suitable as a secondary binder A4 comprises
- A4 is an organic binder selected from the group consisting of - ideally consisting of: redispersible polymer powders, epoxy (co) polymers, (co) polyurethanes, and mixtures thereof.
- the composition further comprises:
- the lubricating mineral filler of particle size d90 less than ⁇ is preferably chosen
- the natural and synthetic silicate minerals and, more preferably still, among the clays, the micas, the kaolins and the metakaolins, the silica fumes, the fly ash and their mixtures,
- the mineral filler with a grain size of d90 greater than or equal to ⁇ is preferably chosen from siliceous, calcareous or silico-calcareous sands, light fillers, which are more particularly chosen from expanded vermiculite or not, expanded perlite or no, expanded or non-foamed glass beads (hollow glass beads (type 3M®) or expanded glass granules (Poraver®, Liaver®)], silica aerogels, expanded or non-expanded polystyrene, cenosphiata (f districtlites), hollow alumina balls, expanded or non-foamed clays, pumice, silicate foam grains, rhyolite (Noblite®), or mixtures thereof.
- the water-repellent is preferably chosen from the group comprising, or more preferably constituted by, fluorinated, silanized, silicone, siloxane agents, metal salts of fatty acids and their mixtures, preferably from the sodium, potassium and / or magnesium salts. oleic and / or stearic acids and mixtures thereof.
- the set retarder is preferably selected from the group comprising or more preferably constituted by calcium chelating agents, carboxylic acids and their salts, polysaccharides and their derivatives, phosphonates, lignosulphonates, phosphates, borates, and the like.
- lead salts zinc, copper, arsenic and antimony, and more particularly among tartaric acid and its salts, preferably its sodium or potassium salts, citric acid and its salts, preferably its sodium salt (citrate trisodium), sodium gluconates; sodium phosphonates; sulphates and their sodium or potassium salts, and mixtures thereof.
- the setting accelerator is preferably selected from the group comprising, or more preferably constituted by, the alkaline and alkaline-earth salts of hydroxides, halides, nitrates, nitrites, carbonates, thiocyanates, sulphates and thiosulphates.
- this complementary setting accelerator (e) being preferably selected from the group comprising or better still consisting of among chlorides and their sodium or calcium salts; carbonates and their sodium or lithium salts, sulphates and their sodium or potassium salts, calcium hydroxides and formates and mixtures thereof;
- A10 is an adjuvant other than A2 make it possible to improve the threshold of flow of the mortar (load bearing).
- this thickening adjuvant is chosen from the group comprising or better still constituted by polysaccharides and their derivatives, polyvinyl alcohols, mineral thickeners, linear polyacrylamides and their mixtures.
- the composition according to the invention is characterized in that the binder A comprises - in% by weight / weight on a dry basis and in increasing order of preference -:
- This biosourced granulate typical of the construction systems according to the invention is based on sunflower stems and / or corn stalks and / or rapeseed stems and has an MVA of less than 1 10 kg / m 3 .
- this biobased granulate is based on stem marrow which represents more than 15% by dry weight of the granulate.
- This quantitative and qualitative selection of the biosourced granulate is a pledge to obtain a constructive system according to the invention, the hardened insulating layer of which provides the desired thermal insulation properties, while providing the mechanical properties of the constructive system, and in particular the expected ductility.
- the biobased granulate consists of rod particles which have a particle size all-passing in the largest dimension of said particles (in mm and in increasing order of preference) ⁇ 15; ⁇ 14; ⁇ 13; ⁇ 12; ⁇ 11.
- These particles are produced from sunflower stalks, corn stalks and / or rape stalks, by industrial methods of chipping, crushing, grinding, separation.
- the separation of the stem particles can consist in particular of sorting between the marrow particles and the bark particles, for example using a densimetric table.
- the stem particles are mainly constituted by marrow particles. More preferably, the percentage p of dry weight marrow marrow particles relative to the total mass of the rods particles, is defined as follows in order of increasing preference: p marrow> 15; >20;>30;>40;> 50.
- the sunflower marrow is characterized by a very alveolar structure which gives it a very low density (30-35 kg / m 3 ).
- this marrow is in the form of particles having a form factor F defined as being the ratio of the largest dimension of the particles to the smallest dimension, such that F ⁇ 3; preferably F ⁇ 2.5; and, more preferably still, F ⁇ 2.5.
- the subject of the invention is also, as a new product, the dry composition
- (d) useful in particular in the system according to the invention characterized in that it contains at least one biobased B granulate based on sunflower stems and / or corn stalks and / or rapeseed stems having a mass Apparent Volumic (MVA) in kg / m3, less than 110; preferably between 10 and 80.
- VMA Apparent Volumic
- the marrow is advantageously in the form of particles having a form factor F defined as being the ratio of the largest dimension of the particles to the smallest dimension, such that F ⁇ 3; preferably F ⁇ 2.5; and, more preferably still, F ⁇ 2.5.
- the dry composition (d) according to the invention contains a binder A comprising - in% by weight / weight on a dry basis and in increasing order of preference -:
- accelerator adjuvant [0 - 3]; [0 - 2]; [0 - 1];
- the dry composition (d) according to the invention is packaged in a bag comprising biobased granule B as defined above, or a binder A as defined above, or a mixture of the two preferably in proportions suitable for the preparation of a hardened insulating layer, said bag also comprising a user manual for the manufacture of hardened insulation layers.
- the invention also aims, as a new product, a kit comprising separately a packaging containing a biobased granule B according to the invention and a packaging containing a binder A according to the invention, as well as a leaflet for using the kit for manufacture of layers of hardened insulation.
- the invention relates to a wet construction composition formed by a mixture of the dry composition according to the invention, mixed with a liquid, preferably water.
- this wet composition is pumpable in a piston pump, or in a screw pump, for example a screw pump with an air gap between rotor and stator between 4 and 30 mm.
- the composition according to the invention satisfies a "projectability" specification, that is to say, for example, that said wet formulation, as soon as it is projected and applied, a layer of about 5 cm, on a vertical support in concrete blocks, holds on this vertical support, without creep without flow, during the time necessary for its hardening and its adhesion in hardened form on said vertical support, to a ambient temperature for example between 5 ° C and 35 ° C and at a relative humidity RH of between 20 and 90 percent.
- a projectability that is to say, for example, that said wet formulation, as soon as it is projected and applied, a layer of about 5 cm, on a vertical support in concrete blocks, holds on this vertical support, without creep without flow, during the time necessary for its hardening and its adhesion in hardened form on said vertical support, to a ambient temperature for example between 5 ° C and 35 ° C and at a relative humidity RH of between 20 and 90 percent.
- the present invention also relates to a process for preparing the wet composition as defined above.
- This process consists of mixing a liquid, preferably water, with the dry construction composition as defined above, advantageously in a mass ratio [water / binder -A-] greater than or equal to 0.8, preferably greater than 1, preferably greater than 1.5.
- This mixing can be done by any suitable conventional device known to those skilled in the art.
- the mixing device can be a planetary mixer or fixed axis (vertical or horizontal) or a concrete mixer.
- the mixing device may or may not be installed directly on the machine comprising the screw pump and allowing the application by spraying or casting the wet composition.
- the present invention also relates to a method of manufacturing the constructive system according to the invention essentially:
- the shaping (ii) is carried out by spraying the wet composition onto a support formed by a wall of the constructive system and / or by pouring into a mold formed or not by one or more constituent elements of the constructive system, this where at least one of these elements is the wall associated with the hardened insulating layer of the constructive system.
- this wall may be a wall element of the ceiling or a ground element (clevis).
- the invention also relates to building structures constructed using the constructive system according to the invention.
- Apparent density is the density of the bulk material including the permeable and impermeable voids of the particle as well as the voids between particles.
- the protocol for the determination of the bulk density of aggregates has been defined by RILEM Technical Committee 236 - Bio-aggregates based building materials. This protocol will be called "reverse method”.
- the test is repeated 3 times.
- the average value and the standard deviation of the measurement are calculated.
- This M2 method corresponds to an adaptation of the so-called filter method.
- Diameter high 100 + 5 mm.
- Diameter 120 +/- 5 mm.
- Faience tile (size: about 120 mm x 5 mm)
- the sample is prepared according to the mixing mode described in the T2 test.
- the thermal conductivity ⁇ (w / m.k) characterizes the flow of heat through a material one meter thick, for a temperature difference of one Kelvin between the two incoming and outgoing faces.
- Measurements were made with a HFM (Heat Flow Meter) and hot plate with 14cm x 16cm x 4cm prismatic specimens. The measurement conditions were set at 20 ° C and 50% RH.
- SILICAUX SAND 0.1 / 0.4, SIBELCO FRANCE
- the photographs in the attached figure 9 show the sunflower particles after grinding and separation: marrow (left) and bark (right).
- EXAMPLE 1 Realization of thermal insulation from the outside with an insulating mortar sprayed with sunflower marrow.
- the insulating system is that of Figure 1. It is composed of:
- FIGS. 11A 11B & 11C illustrate the mixing of the constituents of the insulating mortar in the mixing bowl of the spraying machine (Putzmeister - PI 1): marrow (granulate B) + binder A + water.
- Figures 12A 12B & 12C show:
- ⁇ 12A Insulating mortar based on sunflower marrow after dressing with ruler (wall surface 7 m 2 ).
- the insulating mortar is composed of a binder A (15kg) and a load B (100L).
- the composition of the binder is as follows: ( ' omposilion liai 1 ⁇
- Charge B is composed of 90% of sunflower marrow particles. This charge B is obtained from sunflower stalks harvested in rhône-alpes.
- the transformation process used is as follows:
- the sunflower stalks are left in the field for the time needed to reach a moisture content of less than 30%.
- the stems are harvested in silage with a harvester usually used to harvest sunflower heads (eg CLASS 830 forage harvester).
- silage product is then milled using a hammer mill (Electra Goulu N type).
- the ground material consisting of rod particles: bark and marrow, is sieved on a vibrating screen (type RITEC) to obtain a particle size less than 15 mm.
- the separation of the marrow and the bark is carried out using a densimetric table (CIMBRIA type).
- the granulometric analysis of the load B was carried out by sieving: the maximum size is less than 12 mm.
- the density of the charge B according to the method Ml is of 30 kg / m3.
- the appended FIG. 13 gives the particle size distribution of the granulate B obtained from the sunflower marrow.
- the finishing plaster (PAREXAL - lime monolayer plaster manufactured by PAREXGPvOUP SA) was implemented 48 hours after the last pass of the insulating mortar. After placing the corner rods, the finishing coating was applied in one pass (final thickness 10 mm).
- the insulation system has been evaluated according to the European ETAG 004 standard for external thermal insulation.
- Figure 14 shows the core of the insulating system obtained after an adhesion test according to the European standard ETAG 004.
- EXAMPLE 2 Projection of an insulating mortar based on corn husk intended for the thermal insulation of the vertical walls in ITI and ITE.
- FIGS. 15A, 15B, 15C show projections on a vertical support of concrete blocks of the insulating mortar based on corn marrow, the formula of the binder A is given after.
- Vibrating screen sieving then makes it possible to obtain the desired particle size and to eliminate the bark residues.
- the density of the aggregates B measured according to the method M1 is 23.8 kg / m3.
- Figure 16 shows the B granules of corn marrow used in this example 2.
- the table below gives the composition and the properties of the insulating mortar prepared in this example 2 with the binder A, the aggregates B and the water.
- This example shows the impact of the B / A ratio (biosourced granulate / binder) on the lambda thermal conductivity ⁇ 0.1 W / (m.K) of the hardened insulating layer of the constructive system according to the invention.
- the charge B consists of the same granulate B as that used for Example 1.
- the mixtures were made using a planetary mixer with vertical axis type "Perrier".
- the mixing method used is as follows:
- the increase in the B / A ratio results in a decrease in the density and consequently in the thermal conductivity of the hardened insulating material.
- Ratio volume / weight granulate B / Binder A [L / kg] 5.6 6.7 8.9 13.3 26.7
- FIG. 17 gives the evolution of the density of the hardened insulating layer obtained in Examples 3 to 7, as a function of the ratio Granulat B [L] / Binder A [kg].
- FIG. 18 gives the evolution of the thermal conductivity of the hardened insulating layer obtained in Examples 3 to 7, as a function of the density in the cured state of the insulating material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1660654A FR3058171B1 (fr) | 2016-11-03 | 2016-11-03 | Systeme constructif multicouche et isolant d'un batiment - son procede de fabrication -composition seche utilisable dans cette fabrication |
| PCT/FR2017/053007 WO2018083421A1 (fr) | 2016-11-03 | 2017-11-02 | Systeme constructif multicouche et isolant d'un batiment - son procede de fabrication -composition seche utilisable dans cette fabrication |
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| EP3535224A1 true EP3535224A1 (fr) | 2019-09-11 |
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Country Status (16)
| Country | Link |
|---|---|
| US (1) | US11987526B2 (fr) |
| EP (1) | EP3535224A1 (fr) |
| KR (1) | KR20190078615A (fr) |
| CN (1) | CN110023264A (fr) |
| AR (1) | AR110110A1 (fr) |
| AU (1) | AU2017352826A1 (fr) |
| CA (1) | CA3042311A1 (fr) |
| CL (1) | CL2019001219A1 (fr) |
| CO (1) | CO2019004541A2 (fr) |
| DE (1) | DE112017005549T5 (fr) |
| ES (1) | ES2718809B9 (fr) |
| FR (1) | FR3058171B1 (fr) |
| GB (1) | GB2576393A (fr) |
| MX (1) | MX2019005075A (fr) |
| RU (1) | RU2019116880A (fr) |
| WO (1) | WO2018083421A1 (fr) |
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| FR3058137A1 (fr) * | 2016-11-03 | 2018-05-04 | Parexgroup Sa | Composition de construction seche projetable en voie humide a l'aide d'une pompe a vis et comprenant un liant et une charge biosourcee - preparation et applications d'une telle composition |
| US10870603B2 (en) * | 2019-05-09 | 2020-12-22 | NextLeaf Solutions Ltd. | Hemp straw ash as a supplementary cementitious material |
| GB2591262B (en) * | 2020-01-23 | 2022-07-27 | Adaptavate Ltd | Building product |
| GB202012111D0 (en) * | 2020-08-04 | 2020-09-16 | Material Res Ltd | Composition comprising a binder and bio-based aggregates |
| CN112341124A (zh) * | 2020-10-19 | 2021-02-09 | 同济大学 | 一种墙体保温体系空鼓修补用轻质灌浆材料及制备方法 |
| US12091855B1 (en) * | 2020-11-10 | 2024-09-17 | Jason McSpadden Woodland | Insulated tilt-up wall panel |
| CN112645670B (zh) * | 2020-12-29 | 2022-06-03 | 河南安筑新材料科技有限公司 | 一种漂珠耐火隔热板 |
| US20220312803A1 (en) * | 2021-03-30 | 2022-10-06 | Apeel Technology, Inc. | Edible barrier film composition |
| RU2766181C1 (ru) * | 2021-04-08 | 2022-02-09 | Федеральное государственное бюджетное учреждение "Научно-исследовательский институт строительной физики Российской академии архитектуры и строительных наук" (НИИСФ РААСН) | Строительная смесь для изготовления теплоизоляционных изделий |
| FR3124527B1 (fr) * | 2021-06-24 | 2023-07-14 | Luma/Arles | Panneaux à base de moelle de tournesol |
| RU2771347C1 (ru) * | 2021-07-02 | 2022-04-29 | федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский политехнический университет Петра Великого" (ФГАОУ ВО "СПбПУ") | Способ создания бетонного композита, армированного сухой растительной добавкой |
| FR3126975B1 (fr) * | 2021-09-14 | 2026-03-13 | Saint Gobain Weber France | Elément de construction isolant |
| CN113912346B (zh) * | 2021-10-15 | 2022-08-12 | 河南融之科建材有限公司 | 一种绿色环保型抹灰干混砂浆及其制备工艺 |
| IT202100030680A1 (it) * | 2021-12-03 | 2023-06-03 | Green Building S R L | Materiale perfezionato per realizzare uno strato di una struttura multistrato. |
| CN116084623B (zh) * | 2023-01-10 | 2025-04-04 | 苏州良浦节能新材料股份有限公司 | 一种alc板保温结构 |
| CN117403807B (zh) * | 2023-10-27 | 2024-04-26 | 海南大学 | 一种质轻、易于预制且方便现场施工的叠合墙 |
| GB2640518A (en) * | 2024-04-22 | 2025-10-29 | Adaptavate Ltd | Construction product |
| EP4647470A1 (fr) * | 2024-05-08 | 2025-11-12 | Sika Technology AG | Revêtement de résine époxy comprenant un granulé d'origine biologique lié à l'application |
| EP4647471A1 (fr) * | 2024-05-08 | 2025-11-12 | Sika Technology AG | Système de protection du sol diffusé par des granulés d'origine biologique |
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-
2016
- 2016-11-03 FR FR1660654A patent/FR3058171B1/fr active Active
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2017
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- 2017-11-02 DE DE112017005549.0T patent/DE112017005549T5/de not_active Withdrawn
- 2017-11-02 WO PCT/FR2017/053007 patent/WO2018083421A1/fr not_active Ceased
- 2017-11-02 EP EP17800910.6A patent/EP3535224A1/fr active Pending
- 2017-11-02 MX MX2019005075A patent/MX2019005075A/es unknown
- 2017-11-02 US US16/346,998 patent/US11987526B2/en active Active
- 2017-11-02 AU AU2017352826A patent/AU2017352826A1/en not_active Abandoned
- 2017-11-02 GB GB1906223.1A patent/GB2576393A/en not_active Withdrawn
- 2017-11-02 CA CA3042311A patent/CA3042311A1/fr active Pending
- 2017-11-02 CN CN201780074333.0A patent/CN110023264A/zh active Pending
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- 2019-05-02 CL CL2019001219A patent/CL2019001219A1/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CL2019001219A1 (es) | 2019-07-05 |
| ES2718809B2 (es) | 2020-03-23 |
| AU2017352826A1 (en) | 2019-05-23 |
| ES2718809A2 (es) | 2019-07-04 |
| CA3042311A1 (fr) | 2018-05-11 |
| FR3058171B1 (fr) | 2021-11-26 |
| US11987526B2 (en) | 2024-05-21 |
| BR112019009004A2 (pt) | 2019-07-16 |
| WO2018083421A1 (fr) | 2018-05-11 |
| KR20190078615A (ko) | 2019-07-04 |
| CO2019004541A2 (es) | 2019-09-30 |
| CN110023264A (zh) | 2019-07-16 |
| AR110110A1 (es) | 2019-02-27 |
| RU2019116880A3 (fr) | 2021-03-30 |
| ES2718809R1 (es) | 2019-07-08 |
| FR3058171A1 (fr) | 2018-05-04 |
| ES2718809B9 (es) | 2021-03-29 |
| GB201906223D0 (en) | 2019-06-19 |
| MX2019005075A (es) | 2019-09-09 |
| DE112017005549T5 (de) | 2019-07-25 |
| RU2019116880A (ru) | 2020-12-03 |
| US20190256421A1 (en) | 2019-08-22 |
| GB2576393A (en) | 2020-02-19 |
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