WO2013048351A1 - Gypsum-based composition for construction material and system - Google Patents
Gypsum-based composition for construction material and system Download PDFInfo
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- WO2013048351A1 WO2013048351A1 PCT/TH2012/000043 TH2012000043W WO2013048351A1 WO 2013048351 A1 WO2013048351 A1 WO 2013048351A1 TH 2012000043 W TH2012000043 W TH 2012000043W WO 2013048351 A1 WO2013048351 A1 WO 2013048351A1
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- gypsum
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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
- 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
-
- 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
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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
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Definitions
- the present disclosure relates to material science or material engineering. Background
- the new wall system has been developed and shows its advantages including shorter amount of construction lead time, consistency in quality of finished work, durability and other desirable properties such as flame retardant properties, heat insulation, sound insulation, or light weight properties.
- the present invention discloses gypsum composition for construction work comprising plaster, lightweight aggregrate, and pozzolanic materials.
- the gypsum composition can further comprise of a filler, a group of additives selected from a retarder, a superplasticizer, a water retaining agent, a foaming agent, and an activator at the appropriate ratio or amount.
- the present invention is directed towards a wall system, in which the plaster slurry is added to reduce or minimize excess water and reduce corrosion of metal structure in the wall system to solve wet surface problem.
- a wall structure system having gypsum as one of the composition has heat insulation and flame retarding properties.
- the present invention discloses gypsum composition for construction work comprising plaster, lightweight aggregrate, and pozzolanic materials.
- the gypsum composition can further comprise of a filler, a group of additives selected from a retarder, a superplasticizer, a water retaining agent, a foaming agent, and an activator as described in details in the following:
- Plaster serves as an adhesive material or substance to bind particles and form a solid mass and provide material strength.
- Embodiments of the present disclosure have plaster at the amount of 20-60% by weight of the main composition.
- Plaster can be obtained from natural or synthetic gypsum such as gypsum obtained from desulfurization process of flue gas (flue gas desulfurization gypsum, FGD), phosphogypsum, or gypsum obtained from sodium citrate manufacturing process. Gypsum is heated and reacted in order to obtain plaster. Plaster can be categorized into 2 forms, namely beta-plaster and alpha-plaster. Each form of beta- or alpha-plaster can be selected for various applications based on their different properties such as strength, water absorption/desorption ability of plaster. Embodiments of the present disclosure can use beta-plaster and/or alpha-plaster depending upon required mechanical performance. For instance, alpha-plaster has especially high strength and hardness, requires low amount of water during mixing, slow setting, and good heat resistance.
- Light weight aggregate is added into gypsum composition for construction work to decrease slurry density, which consequently decreases plaster usage per square meter value. Additionally, some light weight aggregate such as rice husk ash or fly ash, which are industrial wastes, are cheap sources. Therefore, light weight aggregate can decrease raw material cost and manufacturing cost without compromising other desirable properties and simultaneously develop an environmentally friendly product.
- Light weight aggregate is a low density material, which has bulk density less than 800 kilogram/cubic meter, and particle size less than 5 millimeter.
- Light weight aggregate that can be used in the present disclosure can come from natural source or synthetic source; for instance, expanded polystyrene, expanded perlite, expanded vermiculite, expanded Shale, expanded clay, expanded cell polymer, closed hollow balloon made up from ceramic materials, polymer materials, glass such as fly ash balloon, Cenosphere, glass sphere, or any material in a closed hollow balloon shape, volcanic ash, microsphere, diatomaceous earth, cork, palm kernel shell, ash obtained from agricultural waste; for instance, rice husk ash, sugar cane ash, wood chip ash, wood ash, and other biomass ashes.
- Lightweight aggregate present in embodiments of the present disclosure can be in the form of single substance or in combination of any substances as described above as representative examples.
- Embodiments of the present disclosure have light weight aggregate at the amount of 5-25% by weight of the main composition.
- Pozzolanic material acts as a binding or adhesive material similarly to plaster and increase strength of the composition for construction work in the present disclosure. Another characteristic of pozzolanic material is that pozzolanic reaction occurs much more slowly than plaster reaction. Pozzolanic material constituted in the composition in the present disclosure can therefore use excess water generated from plaster reaction for the pozzolanic reaction. This pozzolanic characteristic can therefore aid in internal drying phenomenon.
- Pozzolanic material is a material having silica (Si02) as a major component and can react with calcium hydroxide and water to generate a product known as C-S-H in a similar manner to hydration reaction of Portland cement.
- Representative examples of pozzolanic material are silica fume, metakaolin, crushed volcanic ash, rice husk ash, bagasse ash, fly ash, foamed blast furnace slag, and crushed glass.
- Embodiments of the present disclosure can have pozzolanic material at the amount of 10-60% by weight of the main composition.
- pozzolanic materials such as rice husk ash can decrease overall slurry density due to bar-shaped and porous particle.
- said pozzolanic materials require more water for mixing to form slurry.
- Fillers are materials added into an admixture to add up or constitute in the slurry without having any reaction involved and can also decrease raw material cost, which is part of manufacturing cost.
- Fillers used in the present disclosure can have particle size in the range of 0-1 millimeter.
- Representative examples of filler materials are sand, crushed rock, and the like such as calcium carbonate, crushed sand, and talc.
- Embodiments of the present disclosure can have filler at the amount of 0-45% by weight of the main composition.
- Additives are used to mix in the composition to improve certain quality of slurry obtained from mixing gypsum composition with water. .
- Embodiments of the present disclosure can have additives at the amount of 0-5% by weight of the main composition added into the main composition. Representative examples of additives are described in the following;
- DTP A Diethylene Triamine Pentaacetic Acid
- - Water retaining agents including modified cellulose such as Methylcellulose, Hydroxypropylmethyl cellulose, Methylhydroxyethyl cellulose or modified starch such as pre-gel starch, and starch ether
- - Foaming agents and/or air entraining agents such as Sodium Lauryl Sulfate (SLS), polyethylene glycol alkyl ether, protein based foam agent, or foam generated from a reaction of phosphoric and calcium carbonate.
- SLS Sodium Lauryl Sulfate
- polyethylene glycol alkyl ether polyethylene glycol alkyl ether
- protein based foam agent or foam generated from a reaction of phosphoric and calcium carbonate.
- Activators such as calcium hydroxide, calcium chloride. Activators react with pozzolanic materials during pozzolanic reaction to create new crystal substances to bind various particles and consequently increase strength and durability in long term. Additionally, activators can include calcium sulfate dehydrates, which accelerates gypsum reaction.
- Gypsum composition according to the present disclosure can be applied in various construction systems, processes, applications.
- Embodiments of the present disclosure further include a wall system with gypsum composition as described above filling therein.
- a wall system according to the present disclosure comprises of a frame structure, at least one fiber-reinforced cement panel coupled to the front and back sides of the frame structure to form a gap within a panel or between the panels, and slurry of gypsum composition filling in the said gap. Slurry of gypsum composition filling in the said gap will set, be hardened, and form a wall or wall system as designed.
- Embodiments of the present disclosure can provide a gypsum composition comprising;
- Part 1 Main composition
- Pozzolanic materials 10-60% by weight of the main composition Lightweight aggregates 5-25% by weight of the main composition Fillers 0-45% by weight of the main composition
- Embodiments of the present disclosure can provide a gypsum composition comprising;
- Part 1 Main composition having fillers
- plaster with above described composition is mixed with water to obtain plaster slurry slump diameter of 60-65 millimeter.
- the water required for mixing is in the range of 25-55 gram per mixed plaster 100 gram.
- the properties of slurry obtained are: density of 0.7-1.4 gram/cm3, initial setting time in the range of 1-3 hours, final setting time in the range of 3-8 hours, and absorption diameter less than 60 millimeter.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present disclosure relates to a gypsum-based composition for construction work, material, or system. The composition comprises of plaster, lightweight aggregate, and pozzolanic materials. The composition can further comprise of filler, additives selected from a group of retarders, superplasticizers, water retaining agents, foaming agents, air entraining agents, or activators at the suitable ratio to obtain a gypsum-based composition for construction. The present disclosure has an advantage especially for a wall system having plaster slurry filling in the gap of the wall system. Such advantage includes a reduction of excess water from plaster reaction, resulting in solving humid surface, paint wear off problems and delay or reduction of corrosion of metal structure due to long contact with excess water. Additionally, a wall system having gypsum-based composition has heat insulation and flame retardant properties.
Description
Gypsum-Based Composition for Construction Material and System
Technical Field
The present disclosure relates to material science or material engineering. Background
In a construction industry, there is a need for a new wall system to replace an existing or conventional wall system that requires typical brick work and labor intensive. The new wall system has been developed and shows its advantages including shorter amount of construction lead time, consistency in quality of finished work, durability and other desirable properties such as flame retardant properties, heat insulation, sound insulation, or light weight properties.
There is a previous wall system that uses plaster slurry to fill between the gap of the frame-panel structures to form a wall system. However, such present wall system has its limitation such as inability to paint the wall after filling plaster slurry for 7 days. This is because, when plaster slurry is injected to fill the gap along the entire height of the wall and is allowed for setting, excess water generated from plaster reaction will gradually move to dryer region at the outer surface of the panel and then evaporate. Excess water causes difficulty and problems in wall panel painting and delay the entire construction process. More particularly, excess water causes low paint adhesion to the surface or wall panel, resulting in paint wear-off and paint swelling. In case of allowing the excess water to completely evaporate followed by painting step, this will delay the entire construction process. Moreover, excess water may corrode the frame structure. Even when the frame material structure can relatively well withstand corrosion such as zinc galvanized steel structure, prolong contact with excess water or moisture can still cause metal corrosion.
Accordingly, there exists a need to develop an enhanced plaster formulation to be used in a wall system and a new wall system having improved plaster slurry to accelerate construction process and solve limitation of existing wall system.
Summary of the Invention
The present invention discloses gypsum composition for construction work comprising plaster, lightweight aggregrate, and pozzolanic materials. The gypsum composition can further comprise of a filler, a group of additives selected from a retarder, a superplasticizer, a water retaining agent, a foaming agent, and an activator at the appropriate ratio or amount. The present invention is directed towards a wall system, in which the plaster slurry is added to reduce or minimize excess water and reduce corrosion of metal structure in the wall system to solve wet surface problem. In addition, a wall structure system having gypsum as one of the composition has heat insulation and flame retarding properties.
Detailed Description
The present invention discloses gypsum composition for construction work comprising plaster, lightweight aggregrate, and pozzolanic materials. The gypsum composition can further comprise of a filler, a group of additives selected from a retarder, a superplasticizer, a water retaining agent, a foaming agent, and an activator as described in details in the following:
Plaster (or its chemical name as calcium sulfate hemihydrates) serves as an adhesive material or substance to bind particles and form a solid mass and provide material strength. Embodiments of the present disclosure have plaster at the amount of 20-60% by weight of the main composition.
Plaster can be obtained from natural or synthetic gypsum such as gypsum obtained from desulfurization process of flue gas (flue gas desulfurization gypsum, FGD), phosphogypsum, or gypsum obtained from sodium citrate
manufacturing process. Gypsum is heated and reacted in order to obtain plaster. Plaster can be categorized into 2 forms, namely beta-plaster and alpha-plaster. Each form of beta- or alpha-plaster can be selected for various applications based on their different properties such as strength, water absorption/desorption ability of plaster. Embodiments of the present disclosure can use beta-plaster and/or alpha-plaster depending upon required mechanical performance. For instance, alpha-plaster has especially high strength and hardness, requires low amount of water during mixing, slow setting, and good heat resistance.
Light weight aggregate is added into gypsum composition for construction work to decrease slurry density, which consequently decreases plaster usage per square meter value. Additionally, some light weight aggregate such as rice husk ash or fly ash, which are industrial wastes, are cheap sources. Therefore, light weight aggregate can decrease raw material cost and manufacturing cost without compromising other desirable properties and simultaneously develop an environmentally friendly product.
Light weight aggregate, as defined in the present disclosure, is a low density material, which has bulk density less than 800 kilogram/cubic meter, and particle size less than 5 millimeter. Light weight aggregate that can be used in the present disclosure can come from natural source or synthetic source; for instance, expanded polystyrene, expanded perlite, expanded vermiculite, expanded Shale, expanded clay, expanded cell polymer, closed hollow balloon made up from ceramic materials, polymer materials, glass such as fly ash balloon, Cenosphere, glass sphere, or any material in a closed hollow balloon shape, volcanic ash, microsphere, diatomaceous earth, cork, palm kernel shell, ash obtained from agricultural waste; for instance, rice husk ash, sugar cane ash, wood chip ash, wood ash, and other biomass ashes.
Lightweight aggregate present in embodiments of the present disclosure can be in the form of single substance or in combination of any substances as
described above as representative examples. Embodiments of the present disclosure have light weight aggregate at the amount of 5-25% by weight of the main composition.
Pozzolanic material acts as a binding or adhesive material similarly to plaster and increase strength of the composition for construction work in the present disclosure. Another characteristic of pozzolanic material is that pozzolanic reaction occurs much more slowly than plaster reaction. Pozzolanic material constituted in the composition in the present disclosure can therefore use excess water generated from plaster reaction for the pozzolanic reaction. This pozzolanic characteristic can therefore aid in internal drying phenomenon.
Pozzolanic material is a material having silica (Si02) as a major component and can react with calcium hydroxide and water to generate a product known as C-S-H in a similar manner to hydration reaction of Portland cement. Representative examples of pozzolanic material are silica fume, metakaolin, crushed volcanic ash, rice husk ash, bagasse ash, fly ash, foamed blast furnace slag, and crushed glass. Embodiments of the present disclosure can have pozzolanic material at the amount of 10-60% by weight of the main composition.
Particular pozzolanic materials such as rice husk ash can decrease overall slurry density due to bar-shaped and porous particle. However, said pozzolanic materials require more water for mixing to form slurry.
Fillers are materials added into an admixture to add up or constitute in the slurry without having any reaction involved and can also decrease raw material cost, which is part of manufacturing cost. Fillers used in the present disclosure can have particle size in the range of 0-1 millimeter. Representative examples of filler materials are sand, crushed rock, and the like such as calcium carbonate, crushed sand, and talc. Embodiments of the present disclosure can have filler at the amount of 0-45% by weight of the main composition.
Additives are used to mix in the composition to improve certain quality of slurry obtained from mixing gypsum composition with water. . Embodiments of the present disclosure can have additives at the amount of 0-5% by weight of the main composition added into the main composition. Representative examples of additives are described in the following;
- Retarders such as citric acid, tartaric acid, malic acid, water soluble salt, Diethylene Triamine Pentaacetic Acid (DTP A), and calcium tartrate.
- Superplasticizers such as Melamine sulfonate, Melamine sulfonate formaldehyde, Lignosulfonate, Naphthalene sulfonate, Naphthalene sulfonate formaldehyde, Polycarboxylic acid, certain copolymers such as copolymer of Oxyalkylene-alkyl ether, and Dicarboxylic acid
- Water retaining agents including modified cellulose such as Methylcellulose, Hydroxypropylmethyl cellulose, Methylhydroxyethyl cellulose or modified starch such as pre-gel starch, and starch ether
- Foaming agents and/or air entraining agents such as Sodium Lauryl Sulfate (SLS), polyethylene glycol alkyl ether, protein based foam agent, or foam generated from a reaction of phosphoric and calcium carbonate.
- Activators such as calcium hydroxide, calcium chloride. Activators react with pozzolanic materials during pozzolanic reaction to create new crystal substances to bind various particles and consequently increase strength and durability in long term. Additionally, activators can include calcium sulfate dehydrates, which accelerates gypsum reaction.
Gypsum composition according to the present disclosure can be applied in various construction systems, processes, applications. Embodiments of the present disclosure further include a wall system with gypsum composition as described above filling therein. More particularly, a wall system according to the
present disclosure comprises of a frame structure, at least one fiber-reinforced cement panel coupled to the front and back sides of the frame structure to form a gap within a panel or between the panels, and slurry of gypsum composition filling in the said gap. Slurry of gypsum composition filling in the said gap will set, be hardened, and form a wall or wall system as designed.
Below are some representative examples of the composition according to the present disclosure.
Example 1
Embodiments of the present disclosure can provide a gypsum composition comprising;
Part 1 : Main composition
Plaster 25-60% by weight of the main composition
Pozzolanic materials 10-60% by weight of the main composition Lightweight aggregates 5-25% by weight of the main composition Fillers 0-45% by weight of the main composition
Part 2: Additives
Retarder 0.5-2% wt added of the main composition
Superplasticizer 0-0.3% wt added of the main composition Water retaining agents 0.1-0.5% wt added of the main composition Foaming agent 0.05-3% wt added of the main composition
Activator 0-5% wt added of the main composition
Example 2
Embodiments of the present disclosure can provide a gypsum composition comprising;
Part 1 : Main composition having fillers
Plaster 30-50%) by weight of the main composition
Fly ash 10-30% by weight of the main composition
Perlite 7-11% by weight of the main composition
Crushed lime 15-30% by weight of the main composition
Or Part 1: Main composition without fillers
Plaster 30-45% by weight of the main composition
Fly ash 40-60% by weight of the main composition
Perlite 7-11% by weight of the main composition
Or Part 1: Main composition without fillers
Plaster 30-45% by weight of the main composition
Fly ash 35-55% by weight of the main composition
Rice Husk Ash 8-18% by weight of the main composition
Part 2: Additives
Retarder 0.5- 1.5% wt added of the main composition
Superplasticizer 0-0.3% wt added of the main composition
Water retaining agents 0.15-0.35% wt added of the main composition
Foaming agent 0.05-0.2% wt added of the main composition
Activator 0-3% wt added of the main composition
When plaster with above described composition is mixed with water to obtain plaster slurry slump diameter of 60-65 millimeter. The water required for mixing is in the range of 25-55 gram per mixed plaster 100 gram. The properties of slurry obtained are: density of 0.7-1.4 gram/cm3, initial setting time in the range of 1-3 hours, final setting time in the range of 3-8 hours, and absorption diameter less than 60 millimeter.
Claims
1. Composition for construction system comprising;
a) plaster at the quantity of 25-60% by weight;
b) a lightweight aggregate at the quantity of 5-25% by weight; and c) a pozzolanic material at the quantity of 10-60% by weight
having low density of 0.7- 1 A gram/cm
2. The composition according to claim 1 further comprising a filler at the quantity of 1 -45% by weight
3. The composition according to claim 1 further comprising an additive at the quantity of 0.1-5% by weight wherein the additive can be selected from a group of retarders, superplasticizers, water retaining agents, foaming agents, air entraining agents, or activators
4. The composition according to claim 1 wherein the suitable quantity of plaster is 30-45%) by weight
5. The composition according to claim 1 wherein the suitable quantity of lightweight aggregate is 7-11% by weight
6. The composition according to claim 1 wherein the suitable quantity of pozzolanic material is 45-60% by weight
7. The composition according to any one of claims 1 or 4 wherein the plaster is selected from one of beta-plaster, alpha-plaster, or mixture of beta- and alpha-plaster
8. The composition according to any one of claims 1 or 5 wherein the lightweight aggregate is selected from at least one of expanded polystyrene, expanded perlite, expanded vermiculite, expanded Shale, expanded clay, expanded cell polymer, closed hollow, volcanic ash, microsphere, diatomaceous earth, cork, palm kernel shell, or ash obtained from agricultural waste.
9. The composition according to any one of claims 1 or 6 wherein the pozzolanic material is selected from silica fume, metakaolin, crushed volcanic ash, rice husk ash, bagasse ash, fly ash, foamed blast furnace slag, or crushed glass.
10. The composition according to claims 2 wherein the filler is selected from sand, crushed rock, calcium carbonate, or talc
11. The composition according to claims 3 wherein the retarder is selected from a group of citric acid, tartaric acid, malic acid, water soluble salt, Diethylene Triamine Pentaacetic Acid (DTP A), or calcium tartrate.
12. The composition according to claims 3 wherein the superplasticizer is selected from melamine sulfonate, Melamine sulfonate formaldehyde, Lignosulfonate, Naphthalene sulfonate, Naphthalene sulfonate
formaldehyde, Polycarboxylic acid, copolymer of Oxyalkylene-alkyl ether, or Dicarboxylic acid
13. The composition according to claims 3 wherein the water retaining
agent is selected from modified cellulose or modified starch and the foaming agent and the air entraining agent is selected from a group of Sodium Lauryl Sulfate (SLS), polyethylene glycol alkyl ether, protein based foam agent, or foam generated from a reaction of phosphoric and calcium carbonate.
14. The composition according to claims 3 wherein the activator is calcium hydroxide, calcium chloride, or calcium sulfate dehydrates.
15. A wall system according to the present disclosure comprising a frame structure, at least one fiber-reinforced cement panel coupled to the front and back sides of the frame structure to form a gap within a panel or between the panels, and a composition filling in the said gap wherein the composition comprises of plaster at the quantity of 25-60% by weight, a lightweight aggregate at the quantity of 5-25% by weight, and a pozzolanie material at the quantity of 10-60% by weight having low density of 0.7- 1.4 gram/cm3
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TH1101002305 | 2011-09-27 | ||
| TH1101002305A TH130293A (en) | 2011-09-27 | Gypsum for construction |
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| Publication Number | Publication Date |
|---|---|
| WO2013048351A1 true WO2013048351A1 (en) | 2013-04-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TH2012/000043 WO2013048351A1 (en) | 2011-09-27 | 2012-09-21 | Gypsum-based composition for construction material and system |
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| CN108033755A (en) * | 2017-12-23 | 2018-05-15 | 安徽国电能源设备工程有限公司 | A kind of fireproof thermal-insulation composite material for building |
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| CN108821695A (en) * | 2018-08-02 | 2018-11-16 | 刘婷婷 | The formula and its production technology of ash wall body plate |
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| US10954162B1 (en) | 2019-09-24 | 2021-03-23 | Geopolymer Solutions, LLC | Protective coating |
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