CA2696553C - Mineral heat-insulation material - Google Patents
Mineral heat-insulation material Download PDFInfo
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- CA2696553C CA2696553C CA2696553A CA2696553A CA2696553C CA 2696553 C CA2696553 C CA 2696553C CA 2696553 A CA2696553 A CA 2696553A CA 2696553 A CA2696553 A CA 2696553A CA 2696553 C CA2696553 C CA 2696553C
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- mixture
- insulation layer
- heat insulation
- total solid
- solid materials
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- 239000012774 insulation material Substances 0.000 title description 12
- 229910052500 inorganic mineral Inorganic materials 0.000 title description 6
- 239000011707 mineral Substances 0.000 title description 6
- 239000000203 mixture Substances 0.000 claims abstract description 42
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000009413 insulation Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000011148 porous material Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000010440 gypsum Substances 0.000 claims abstract description 11
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 235000011837 pasties Nutrition 0.000 claims abstract description 4
- 239000011343 solid material Substances 0.000 claims description 16
- 239000007767 bonding agent Substances 0.000 claims description 14
- 239000006028 limestone Substances 0.000 claims description 12
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 11
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 11
- 239000004571 lime Substances 0.000 claims description 11
- 235000013312 flour Nutrition 0.000 claims description 10
- 235000019738 Limestone Nutrition 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 3
- 150000004645 aluminates Chemical class 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 239000000470 constituent Substances 0.000 abstract description 7
- 239000011230 binding agent Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 2
- 239000006260 foam Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- -1 calcium silicate hydrates Chemical class 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000003340 retarding agent Substances 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—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 calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/146—Calcium sulfate hemi-hydrate with a specific crystal form alpha-hemihydrate
-
- 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
- C04B28/14—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 calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/147—Calcium sulfate hemi-hydrate with a specific crystal form beta-hemihydrate
-
- 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
- C04B2111/00112—Mixtures characterised by specific pH values
-
- 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
-
- 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
-
- 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
- C04B2111/62—Self-levelling compositions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Building Environments (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The method for applying a heat insulation layer to an area is characterized in that alpha-hemihydrate or beta-gypsum or lime-alpha-hemihydrate or a mixture thereof is mixed as hydraulic binder with a pore former consisting of aluminum powder, mixed with ground limestone, and citric acid with addition of water and is cast in liquid or pasty form onto the area. The mixture has a pH of 11.8 or more. The constituents are preferably mixed on site, namely in such a consistency that the mixture is self-leveling. Placement on the laying site can e.g. be carried out by means of a floor screed pump. The material expands to the desired total thickness, yielding a homogeneous insulation layer of uniform thickness and quality and of high strength that will reach its high final strength after about 24 hours. The material can also be applied in a pasty consistency to a wall.
Description
Mineral heat-insulation material The present invention relates to a mineral heat-insulation material which is e.g.
usable as an interior wall insulation, roof insulation, floor insulation, façade insulation, as an insulation for passages leading, for example, to basement garages, and for filling cavities with heat-insulating effect, and to the formation of a load-bearing heat insulation underneath concrete constructions in building and civil engineering.
It is known that a mixture is prepared from calcium silicate hydrates, lime, sand, cement, water and pore formers, the mixture being cast into large blocks, heated to about 190 C. and cut into stone slabs after cooling by means of autoclaves.
This requires a considerable amount of energy and also has the drawback that with many applications it is not possible to cover the whole area prone to heat loss by laying heat-insulating panels because some parts of the area are often concealed, for instance, by vent channels or cable/pipes, etc. In the case of a reinforced concrete floor it is normally only about 85% of the area that is adapted to be covered by heat insulating panels.
EP 0 490 160 Al discloses a process for manufacturing gypsum building materials, in which alpha-hemihydrate with a Blaine specific surface area is mixed with beta-hemihydrate and a prefabricated surfactant foam is added to said mixture, which foam is prepared by means of a foam gun at a specific water/surfactant/air ratio and with a defined foaming length, which is meant to yield a substantially uniform pore size.
The suspension is then subjected to a forming process, particularly in the form of wall panels that are then introduced into an autoclave where they are exposed to a saturated vapor treatment and to a temperature of up to 200 C.
The present invention may provide a better solution for these problems.
usable as an interior wall insulation, roof insulation, floor insulation, façade insulation, as an insulation for passages leading, for example, to basement garages, and for filling cavities with heat-insulating effect, and to the formation of a load-bearing heat insulation underneath concrete constructions in building and civil engineering.
It is known that a mixture is prepared from calcium silicate hydrates, lime, sand, cement, water and pore formers, the mixture being cast into large blocks, heated to about 190 C. and cut into stone slabs after cooling by means of autoclaves.
This requires a considerable amount of energy and also has the drawback that with many applications it is not possible to cover the whole area prone to heat loss by laying heat-insulating panels because some parts of the area are often concealed, for instance, by vent channels or cable/pipes, etc. In the case of a reinforced concrete floor it is normally only about 85% of the area that is adapted to be covered by heat insulating panels.
EP 0 490 160 Al discloses a process for manufacturing gypsum building materials, in which alpha-hemihydrate with a Blaine specific surface area is mixed with beta-hemihydrate and a prefabricated surfactant foam is added to said mixture, which foam is prepared by means of a foam gun at a specific water/surfactant/air ratio and with a defined foaming length, which is meant to yield a substantially uniform pore size.
The suspension is then subjected to a forming process, particularly in the form of wall panels that are then introduced into an autoclave where they are exposed to a saturated vapor treatment and to a temperature of up to 200 C.
The present invention may provide a better solution for these problems.
2 Broadly stated, the invention provides a method of applying a heat insulation layer to a surface. The method includes providing a mixture containing:
a hydraulic bonding agent comprising 80-90 wt % of total solid materials of the mixture, the hydraulic bonding agent containing alpha-hemihydrate, beta-gypsum, or a mixture of alpha-hemihydrate and beta gypsum, an aluminum powder-limestone flour mixture comprising 5-14.95 wt % of the total solid materials, the aluminum powder-limestone flour mixture having a ratio of about 90% limestone flour to about 10% aluminum powder, lime comprising 0.5-5.0 wt (3/0 of the total solid materials, citric acid comprising about 0.05 wt (3/0 of the total solid materials, and water, wherein the mixture has a pH of 11.8 or more, and applying the mixture in liquid or paste form onto the surface, wherein a water/bonding agent factor is about 0.35-0.65%.
The invention also broadly provides a method of providing a heat insulation layer for a surface. The method includes:
mixing a bonding agent, a pore former, lime, and citric acid with an addition of water to provide a mixture having a pH of 11.8 or more, the bonding agent comprising 80-90 wt. % of total solid materials, the pore former comprising 5-14.95 wt %
of the total solid materials, the lime comprising 0.5-5.0 wt % of the total solid materials, and the citric acid comprising about 0.05 wt % of the total solid materials; and applying the mixture in liquid or paste form onto the surface to provide the heat insulation layer, wherein a water/bonding agent factor is about 0.35-0.65%;
wherein the hydraulic bonding agent contains alpha-hemihydrate, beta-gypsum, or a mixture of alpha-hemihydrate and beta gypsum; and wherein the pore former comprises blended aluminum powder and limestone flour having a ratio of about 90% limestone flour to about 10% aluminum powder.
According to the invention the heat insulation layer contains the constituents alpha-hemihydrate or beta-gypsum or lime-alpha-hemihydrate or a mixture of two or
a hydraulic bonding agent comprising 80-90 wt % of total solid materials of the mixture, the hydraulic bonding agent containing alpha-hemihydrate, beta-gypsum, or a mixture of alpha-hemihydrate and beta gypsum, an aluminum powder-limestone flour mixture comprising 5-14.95 wt % of the total solid materials, the aluminum powder-limestone flour mixture having a ratio of about 90% limestone flour to about 10% aluminum powder, lime comprising 0.5-5.0 wt (3/0 of the total solid materials, citric acid comprising about 0.05 wt (3/0 of the total solid materials, and water, wherein the mixture has a pH of 11.8 or more, and applying the mixture in liquid or paste form onto the surface, wherein a water/bonding agent factor is about 0.35-0.65%.
The invention also broadly provides a method of providing a heat insulation layer for a surface. The method includes:
mixing a bonding agent, a pore former, lime, and citric acid with an addition of water to provide a mixture having a pH of 11.8 or more, the bonding agent comprising 80-90 wt. % of total solid materials, the pore former comprising 5-14.95 wt %
of the total solid materials, the lime comprising 0.5-5.0 wt % of the total solid materials, and the citric acid comprising about 0.05 wt % of the total solid materials; and applying the mixture in liquid or paste form onto the surface to provide the heat insulation layer, wherein a water/bonding agent factor is about 0.35-0.65%;
wherein the hydraulic bonding agent contains alpha-hemihydrate, beta-gypsum, or a mixture of alpha-hemihydrate and beta gypsum; and wherein the pore former comprises blended aluminum powder and limestone flour having a ratio of about 90% limestone flour to about 10% aluminum powder.
According to the invention the heat insulation layer contains the constituents alpha-hemihydrate or beta-gypsum or lime-alpha-hemihydrate or a mixture of two or
3 three of said constituents as hydraulic binder, pore formers of aluminum powder and ground limestone, which are blended with one another, lime and a retarding agent such as citric acid. Like the other constituents, the citric acid is added in a ground state.
The lime is added in such an amount that according to the invention the finished mixture has a pH of 11.8 or more. Without lime the pH would normally be 8 to 10. Due to the alkaline environment the aluminum powder reacts to form aluminate and hydrogen, which loosens the binder mass, and the resulting heat development creates water vapor which will then loosen the solid structure and leave the pores.
The pore structure is very uniform. The heat insulation material is thus open to vapor diffusion.
The citric acid in combination with the other constituents has the advantage that the compressive strength is not decreasing, but always remains the same. By contrast, in conventional mineral heat-insulation materials the compressive strength is decreasing by about 5-8%. The compressive strength is maintained in the mixture according to the invention.
The constituents of the mixture are preferably composed as follows:
Binder 80-90% by wt. of the total solids content Aluminum-limestone powder in the mixture of 90% limestone powder + 10% aluminum 5-14.95% by wt. of the total solids content Lime 0.5-5.0% by wt. of the total solids content Citric acid about 0.05% by wt. of the total solids content The water/binder factor is preferably 0.35-0.65%.
The constituents of the mineral heat-insulation materials are preferably mixed on site with addition of water and are cast in liquid (or paste-like) form onto the substrate.
The lime is added in such an amount that according to the invention the finished mixture has a pH of 11.8 or more. Without lime the pH would normally be 8 to 10. Due to the alkaline environment the aluminum powder reacts to form aluminate and hydrogen, which loosens the binder mass, and the resulting heat development creates water vapor which will then loosen the solid structure and leave the pores.
The pore structure is very uniform. The heat insulation material is thus open to vapor diffusion.
The citric acid in combination with the other constituents has the advantage that the compressive strength is not decreasing, but always remains the same. By contrast, in conventional mineral heat-insulation materials the compressive strength is decreasing by about 5-8%. The compressive strength is maintained in the mixture according to the invention.
The constituents of the mixture are preferably composed as follows:
Binder 80-90% by wt. of the total solids content Aluminum-limestone powder in the mixture of 90% limestone powder + 10% aluminum 5-14.95% by wt. of the total solids content Lime 0.5-5.0% by wt. of the total solids content Citric acid about 0.05% by wt. of the total solids content The water/binder factor is preferably 0.35-0.65%.
The constituents of the mineral heat-insulation materials are preferably mixed on site with addition of water and are cast in liquid (or paste-like) form onto the substrate.
4 The mixture is preferably of such a consistency that it is self-leveling.
The heat-insulation material mixture is preferably cast at a thickness of between 1 cm and 2 cm onto the substrate, in which process the introduced mixture does not require any considerable leveling and screeding work. Placement on the laying site can e.g. be carried out with floor screed pumps. The material will then expand at the above-indicated thickness of 2 cm of the base material to a total thickness of about 51 mm, thereby yielding a homogeneous insulation layer of equal thickness and quality and of high strength.
The cast insulation material will be hard enough to be walked on after about min and will reach its high final strength after about 24 hours.
The energy input for forming the thermal insulation layer is only about 1% of the energy input required e.g. by porous concrete stones.
The chemical process in the heat insulation material according to the invention is as follows: the aluminum expands at a pH of 11.8 or more and generates pores while forming hydrogen, the pores being present in the structure in a stable state after drying.
These pores are filled with air so that a highly efficiently heat insulation material is obtained because air is one of the poorest heat conductors. The finished insulation layer does not evaporate and is non-combustible (Fuel Class Al).
Moreover, the heat insulation material according to the invention is 100%
recyclable. If the material has to be removed again, it can be remixed with water after renewed grinding with an amount of hydraulic binder and with addition of pore formers, resulting in the same product again.
The mineral insulating material according to the invention can be cast in the retrofitting of existing buildings onto wooden floors that statically require a small weight.
It is also highly suited as impact sound insulation material e.g. in the case of joist ceilings having a low weight of their own. As a liquid, self-leveling insulation, each spot of the floor area to be insulated can be reached. The invention also provides for a fast and easy insulation of a wall area. While a wall is being insulated, one can proceed
The heat-insulation material mixture is preferably cast at a thickness of between 1 cm and 2 cm onto the substrate, in which process the introduced mixture does not require any considerable leveling and screeding work. Placement on the laying site can e.g. be carried out with floor screed pumps. The material will then expand at the above-indicated thickness of 2 cm of the base material to a total thickness of about 51 mm, thereby yielding a homogeneous insulation layer of equal thickness and quality and of high strength.
The cast insulation material will be hard enough to be walked on after about min and will reach its high final strength after about 24 hours.
The energy input for forming the thermal insulation layer is only about 1% of the energy input required e.g. by porous concrete stones.
The chemical process in the heat insulation material according to the invention is as follows: the aluminum expands at a pH of 11.8 or more and generates pores while forming hydrogen, the pores being present in the structure in a stable state after drying.
These pores are filled with air so that a highly efficiently heat insulation material is obtained because air is one of the poorest heat conductors. The finished insulation layer does not evaporate and is non-combustible (Fuel Class Al).
Moreover, the heat insulation material according to the invention is 100%
recyclable. If the material has to be removed again, it can be remixed with water after renewed grinding with an amount of hydraulic binder and with addition of pore formers, resulting in the same product again.
The mineral insulating material according to the invention can be cast in the retrofitting of existing buildings onto wooden floors that statically require a small weight.
It is also highly suited as impact sound insulation material e.g. in the case of joist ceilings having a low weight of their own. As a liquid, self-leveling insulation, each spot of the floor area to be insulated can be reached. The invention also provides for a fast and easy insulation of a wall area. While a wall is being insulated, one can proceed
5 section wise from the bottom to the top with a pasty base material for instance in strips of a height of 1.5 m.
It is also possible to prefabricate panels of any desired dimension as façade insulation panels for direct adhesive bonding by means of a commercially available adhesive. This façade insulation has the advantage that a good insulation is achieved.
The insulating system permits the passage of solar energy into the massive building material and is simultaneously open to vapor diffusion for the possible transportation of moisture. This prevents the formation of mold within the building. Thus the temperature equalization between indoor air and outdoor temperature is also called instationary U-value, which ensures a balanced room climate while guaranteeing good heat insulation. Contrary to the Energy Saving Directive, it is possible with this system to include the solar gains in the loss and profit calculation.
It should be noted that the invention is not limited to the above-described embodiments. Rather, all of the disclosed features can be combined individually with one another in any desired way.
It is also possible to prefabricate panels of any desired dimension as façade insulation panels for direct adhesive bonding by means of a commercially available adhesive. This façade insulation has the advantage that a good insulation is achieved.
The insulating system permits the passage of solar energy into the massive building material and is simultaneously open to vapor diffusion for the possible transportation of moisture. This prevents the formation of mold within the building. Thus the temperature equalization between indoor air and outdoor temperature is also called instationary U-value, which ensures a balanced room climate while guaranteeing good heat insulation. Contrary to the Energy Saving Directive, it is possible with this system to include the solar gains in the loss and profit calculation.
It should be noted that the invention is not limited to the above-described embodiments. Rather, all of the disclosed features can be combined individually with one another in any desired way.
Claims (15)
1. A method of applying a heat insulation layer to a surface, comprising:
providing a mixture containing:
a hydraulic bonding agent comprising 80-90 wt % of total solid materials of the mixture, the hydraulic bonding agent containing alpha-hemihydrate, beta-gypsum, or a mixture of alpha-hemihydrate and beta gypsum, an aluminum powder-limestone flour mixture comprising 5-14.95 wt % of the total solid materials, the aluminum powder-limestone flour mixture having a ratio of about 90% limestone flour to about 10%
aluminum powder, lime comprising 0.5-5.0 wt % of the total solid materials, citric acid comprising about 0.05 wt % of the total solid materials, and water, wherein the mixture has a pH of 11.8 or more; and applying the mixture in liquid or paste form onto the surface, wherein a water/bonding agent factor is about 0.35-0.65%.
providing a mixture containing:
a hydraulic bonding agent comprising 80-90 wt % of total solid materials of the mixture, the hydraulic bonding agent containing alpha-hemihydrate, beta-gypsum, or a mixture of alpha-hemihydrate and beta gypsum, an aluminum powder-limestone flour mixture comprising 5-14.95 wt % of the total solid materials, the aluminum powder-limestone flour mixture having a ratio of about 90% limestone flour to about 10%
aluminum powder, lime comprising 0.5-5.0 wt % of the total solid materials, citric acid comprising about 0.05 wt % of the total solid materials, and water, wherein the mixture has a pH of 11.8 or more; and applying the mixture in liquid or paste form onto the surface, wherein a water/bonding agent factor is about 0.35-0.65%.
2. The method according to claim 1, wherein the surface is a floor surface.
3. The method according to claim 1, wherein the surface is a wall surface and that the mixture is of a pasty consistency.
4. The method according to claim 1 or 2, wherein the providing comprises mixing the mixture at a place of installation.
5. The method according to claim 1 or 2, wherein the provided mixture is of such a consistency that it is self-leveling.
6. The method according to any one of claims 1-5, wherein the applied mixture introduces a heat insulation layer to the surface, and wherein the introduced heat insulation layer hardens to reach its final strength after about 24 hours.
7. The method according to claim 6, wherein the final strength in the applied mixture is maintained after hardening.
8. The method according to any one of claims 1-7, wherein the mixture is 100%
recyclable.
recyclable.
9. The method according to any one of claims 1-8, wherein the heat insulation layer includes a highly uniform pore structure; and wherein the heat insulation layer is open to vapor diffusion.
10. The method according to any one of claims 1-9, wherein after applying the mixture, the aluminum powder reacts to form aluminate and hydrogen, wherein heat is developed; and wherein the heat development creates water vapor, the water vapor loosening a solid structure of the mixture and leaving pores in the solid structure, the pores being filled with air.
11. A method of providing a heat insulation layer for a surface, comprising:
mixing a bonding agent, a pore former, lime, and citric acid with an addition of water to provide a mixture having a pH of 11.8 or more, the bonding agent comprising 80-90 wt. % of total solid materials, the pore former comprising 5-14.95 wt % of the total solid materials, the lime comprising 0.5-5.0 wt % of the total solid materials, and the citric acid comprising about 0.05 wt % of the total solid materials; and applying the mixture in liquid or paste form onto the surface to provide the heat insulation layer, wherein a water/bonding agent factor is about 0.35-0.65%;
wherein the hydraulic bonding agent contains alpha-hemihydrate, beta-gypsum, or a mixture of alpha-hemihydrate and beta gypsum; and wherein the pore former comprises blended aluminum powder and limestone flour having a ratio of about 90% limestone flour to about 10%
aluminum powder.
mixing a bonding agent, a pore former, lime, and citric acid with an addition of water to provide a mixture having a pH of 11.8 or more, the bonding agent comprising 80-90 wt. % of total solid materials, the pore former comprising 5-14.95 wt % of the total solid materials, the lime comprising 0.5-5.0 wt % of the total solid materials, and the citric acid comprising about 0.05 wt % of the total solid materials; and applying the mixture in liquid or paste form onto the surface to provide the heat insulation layer, wherein a water/bonding agent factor is about 0.35-0.65%;
wherein the hydraulic bonding agent contains alpha-hemihydrate, beta-gypsum, or a mixture of alpha-hemihydrate and beta gypsum; and wherein the pore former comprises blended aluminum powder and limestone flour having a ratio of about 90% limestone flour to about 10%
aluminum powder.
12. The method according to claim 11, wherein said mixing takes place at a place of use.
13. The method according to claim 11 or 12, further comprising:
allowing the heat insulation layer to harden, wherein the heat insulation layer hardens to its final strength after about 24 hours.
allowing the heat insulation layer to harden, wherein the heat insulation layer hardens to its final strength after about 24 hours.
14. The method according to any one of claims 11-13, wherein the surface is a floor surface.
15. The method according to any one of claims 11-13, wherein the surface is a wall surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2696553A CA2696553C (en) | 2010-03-15 | 2010-03-15 | Mineral heat-insulation material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2696553A CA2696553C (en) | 2010-03-15 | 2010-03-15 | Mineral heat-insulation material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2696553A1 CA2696553A1 (en) | 2011-09-15 |
| CA2696553C true CA2696553C (en) | 2016-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2696553A Active CA2696553C (en) | 2010-03-15 | 2010-03-15 | Mineral heat-insulation material |
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| Country | Link |
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| CA (1) | CA2696553C (en) |
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| Publication number | Publication date |
|---|---|
| CA2696553A1 (en) | 2011-09-15 |
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