CA2635516A1 - System and process for producing expanded polystyrene (eps) beads coated with a coating composition, composition used therefor, and a concrete mixture containing same - Google Patents
System and process for producing expanded polystyrene (eps) beads coated with a coating composition, composition used therefor, and a concrete mixture containing same Download PDFInfo
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- CA2635516A1 CA2635516A1 CA 2635516 CA2635516A CA2635516A1 CA 2635516 A1 CA2635516 A1 CA 2635516A1 CA 2635516 CA2635516 CA 2635516 CA 2635516 A CA2635516 A CA 2635516A CA 2635516 A1 CA2635516 A1 CA 2635516A1
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- beads
- eps
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- coating composition
- expanded polystyrene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D131/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Coating compositions based on derivatives of such polymers
- C09D131/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C09D131/04—Homopolymers or copolymers of vinyl acetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3461—Making or treating expandable particles
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1029—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/22—After-treatment of expandable particles; Forming foamed products
- C08J9/224—Surface treatment
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D129/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
- C09D129/02—Homopolymers or copolymers of unsaturated alcohols
- C09D129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2431/00—Characterised by the use of copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, or carbonic acid, or of a haloformic acid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0041—Optical brightening agents, organic pigments
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L31/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid; Compositions of derivatives of such polymers
- C08L31/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C08L31/04—Homopolymers or copolymers of vinyl acetate
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A system and process for making Expanded Polystyrene (EPS) beads coated with a coating composition and a concrete mixture containing the coated EPS
beads are provided. The coating composition removes a restrictive gas layer on EPS beads by adhering to the beads and having a suitable porosity to allow the gas to dissipate, and thus enables a strong attraction and permanent adherence of a material, having cementitious properties, such as, for example concrete, to the EPS beads. The adherence of the material to EPS beads creates a mixture that can be pre-cast into building blocks significantly stronger and sturdier structurally than existing methods allow for. The beads are specifically made to correct size and density for the process in pre-expanders, comprising fluid bed dryers, and then treated through the spray application of the coating composition.
beads are provided. The coating composition removes a restrictive gas layer on EPS beads by adhering to the beads and having a suitable porosity to allow the gas to dissipate, and thus enables a strong attraction and permanent adherence of a material, having cementitious properties, such as, for example concrete, to the EPS beads. The adherence of the material to EPS beads creates a mixture that can be pre-cast into building blocks significantly stronger and sturdier structurally than existing methods allow for. The beads are specifically made to correct size and density for the process in pre-expanders, comprising fluid bed dryers, and then treated through the spray application of the coating composition.
Description
SYSTEM AND PROCESS FOR PRODUCING EXPANDED POLYSTYRENE
(EPS) BEADS COATED WITH A COATING COMPOSITION, COMPOSITION
USED THEREFOR, AND A CONCRETE MIXTURE CONTAINING SAME
FIELD OF THE INVENTION
The invention relates to expanded polystyrene particles. In particular, the invention relates to pre-expanded polystyrene particles having a coating layer produced by coating the surface of the pre-expanded polystyrene particles with a functional coating composition.
BACKGROUND OF THE INVENTION
Expanded polystyrene is a polymer resin obtained by heating and curing the polystyrene resin to generate foams. Expanded polystyrene is white in color, light in weight, and has superior water resistance, thermal insulation, sound absorption and buffering properties. Due to these advantages, expanded polystyrene has wide industrial applicability.
A particular application of the expanded polystyrene is construction, in particular, as an additive for a building material. The introduction of granules or beads, for example of polystyrene, into concrete or plaster presents difficulties, however, in obtaining adequate binding adherence between the concrete and the granules. It is a known problem of building materials of this type that the granules are easily broken away from the concrete or plaster, with the result that the material tends to disintegrate as the granules break away.
Previous issues in developing such a mixture were based primarily on the inability of concrete to adhere to EPS beads, and thus the inability of the mixture to blend evenly and produce an evenly distributed mixture that could be extruded or cast to form structurally sound, solid construction panels. This was because expanded polystyrene emits a miniscule amount of pentane gas for long periods of time, covering the bead with a molecular layer of gas which acts as a release agent, preventing concrete from properly adhering to beads. This lack of adherence resulted in poorly mixed lightweight concrete, which was characterized by, inter alia, bead clumping, bead floating, and non-consistent consolidation of mix as well as structural weakness and failure, in previous EPS
and concrete mixtures.
Additional problems associated with prior concrete construction are: tests, studies and time, have shown that water causes shrinkage and cracks in concrete.
Expanded polystyrene beads coated with a functional layer and manufacturing processes thereof are known in the art.
For instance, U.S. Patent No. 3,257,338 issued June 21, 1966 to Sefton relates to lightweight construction material, particularly to lightweight concrete.
Sefton describes a concrete mix comprising cement, primary aggregate and/or filler, expanded, expandable polystyrene, and a homogenizing agent. The expanded polystyrene are made from particles of expandable styrene polymer and are preferably, but not limited to, spherical beads.
U.S. Patent No. 3,764,357 issued October 9, 1973, to Bowles et al., discloses a method of preparation of lightweight concrete and plaster comprising the steps of : wetting the surfaces of lightweight aggregate particles, such as, for example, polystyrene beads with an aqueous medium; admixing the wet aggregate particles with dry finely divided cementitious material to form a coating thereon; and, thereafter, adding additional aqueous medium in an amount to produce a coherent formable uncured concrete or plaster.
(EPS) BEADS COATED WITH A COATING COMPOSITION, COMPOSITION
USED THEREFOR, AND A CONCRETE MIXTURE CONTAINING SAME
FIELD OF THE INVENTION
The invention relates to expanded polystyrene particles. In particular, the invention relates to pre-expanded polystyrene particles having a coating layer produced by coating the surface of the pre-expanded polystyrene particles with a functional coating composition.
BACKGROUND OF THE INVENTION
Expanded polystyrene is a polymer resin obtained by heating and curing the polystyrene resin to generate foams. Expanded polystyrene is white in color, light in weight, and has superior water resistance, thermal insulation, sound absorption and buffering properties. Due to these advantages, expanded polystyrene has wide industrial applicability.
A particular application of the expanded polystyrene is construction, in particular, as an additive for a building material. The introduction of granules or beads, for example of polystyrene, into concrete or plaster presents difficulties, however, in obtaining adequate binding adherence between the concrete and the granules. It is a known problem of building materials of this type that the granules are easily broken away from the concrete or plaster, with the result that the material tends to disintegrate as the granules break away.
Previous issues in developing such a mixture were based primarily on the inability of concrete to adhere to EPS beads, and thus the inability of the mixture to blend evenly and produce an evenly distributed mixture that could be extruded or cast to form structurally sound, solid construction panels. This was because expanded polystyrene emits a miniscule amount of pentane gas for long periods of time, covering the bead with a molecular layer of gas which acts as a release agent, preventing concrete from properly adhering to beads. This lack of adherence resulted in poorly mixed lightweight concrete, which was characterized by, inter alia, bead clumping, bead floating, and non-consistent consolidation of mix as well as structural weakness and failure, in previous EPS
and concrete mixtures.
Additional problems associated with prior concrete construction are: tests, studies and time, have shown that water causes shrinkage and cracks in concrete.
Expanded polystyrene beads coated with a functional layer and manufacturing processes thereof are known in the art.
For instance, U.S. Patent No. 3,257,338 issued June 21, 1966 to Sefton relates to lightweight construction material, particularly to lightweight concrete.
Sefton describes a concrete mix comprising cement, primary aggregate and/or filler, expanded, expandable polystyrene, and a homogenizing agent. The expanded polystyrene are made from particles of expandable styrene polymer and are preferably, but not limited to, spherical beads.
U.S. Patent No. 3,764,357 issued October 9, 1973, to Bowles et al., discloses a method of preparation of lightweight concrete and plaster comprising the steps of : wetting the surfaces of lightweight aggregate particles, such as, for example, polystyrene beads with an aqueous medium; admixing the wet aggregate particles with dry finely divided cementitious material to form a coating thereon; and, thereafter, adding additional aqueous medium in an amount to produce a coherent formable uncured concrete or plaster.
2 U.S. Patent No. 4,011,355 issued March 8, 1977 to Mandish et al., discloses a coated, lightweight aggregate, in particular expanded polymer beads, such as, expanded polystyrene beads, for mixing with cement, sand and water for producing a lightweight construction material is provided in which expanded polystyrene beads are coated with a mixture formed of dehydrated lime and hydrated alumina with water in an amount to impart a suitable consistency and a wetting agent. A method of making the mixture and coating the beads is also provided.
U.S. Patent No. 4,398,958 issued August 16, 1983 to Hodson et al., discloses a method of making lightweight concrete incorporating expanded polystyrene beads comprising, first, coating the expanded beads with an aqueous surfactant solution, which preferably contains a substantive cationic surfactant, e.g. a substituted or ethoxylated quaternary ammonium compound containing a Clo to C1$ alkyl substituent or an ethoxylated primary or secondary amine having a C10 to C18 alkyl substituent, and a non-ionic surfactant such as an ethoxylated primary or secondary alcohol or a nonylphenol-ethylene oxide condensate. The wet beads are coated with dry cement and then mixed with a further supply of cement, water and sand or aggregate to complete the concrete mix.
U.S. Patent No. 4,385,156 issued May 24, 1983 to Ingram et al., discloses a process for producing styrenic polymer expandable beads that are useful in forming heat-resistant foamed articles comprising forming an aqueous suspension of initial styrenic polymer beads and adding thereto a portion of a comonomer solution of styrenic monomer and methacrylic acid, which solution also contains a polymerization regulator, forming an emulsion of catalyst, monomer solution and polyvinyl alcohol suspending agent, adding portions of the emulsion to the suspension and then adding the remainder of the comonomer solution to the suspension, and the suspension with added monomers is heated
U.S. Patent No. 4,398,958 issued August 16, 1983 to Hodson et al., discloses a method of making lightweight concrete incorporating expanded polystyrene beads comprising, first, coating the expanded beads with an aqueous surfactant solution, which preferably contains a substantive cationic surfactant, e.g. a substituted or ethoxylated quaternary ammonium compound containing a Clo to C1$ alkyl substituent or an ethoxylated primary or secondary amine having a C10 to C18 alkyl substituent, and a non-ionic surfactant such as an ethoxylated primary or secondary alcohol or a nonylphenol-ethylene oxide condensate. The wet beads are coated with dry cement and then mixed with a further supply of cement, water and sand or aggregate to complete the concrete mix.
U.S. Patent No. 4,385,156 issued May 24, 1983 to Ingram et al., discloses a process for producing styrenic polymer expandable beads that are useful in forming heat-resistant foamed articles comprising forming an aqueous suspension of initial styrenic polymer beads and adding thereto a portion of a comonomer solution of styrenic monomer and methacrylic acid, which solution also contains a polymerization regulator, forming an emulsion of catalyst, monomer solution and polyvinyl alcohol suspending agent, adding portions of the emulsion to the suspension and then adding the remainder of the comonomer solution to the suspension, and the suspension with added monomers is heated
3 to copolymerize the styrenic monomer and methacrylic acid about the initial beads and form a coating about the beads.
U.S. Patent No. 4,433,029 issued February 21, 1984 to Senda et al., discloses expandable thermoplastic polymer beads and method of producing same, wherein a core of a polymer of one or more vinyl monomers is substantially surrounded by a layer of a polyolefin comprising one or more vinyl monomers, with a foaming agent contained in at least the core.
U.S. Patent No. 7,128,973 issued October 31, 2006 to Park disclose expanded polystyrene particles having a polyvinyl acetate resin-based functional skin layer, and a process thereof are provided. The particle includes an inner expanded polystyrene layer; and a functional skin layer.
U.S. Patent No. 7,255,738 issued August 14, 2007 to Semmens describe a lightweight cementitious composite material includes expanded synthetic polymer particulate having a particle size of between 0.0625 and 0.5 inches. A
dispersant coating on said particulate suppresses electrostatic attraction between particulate particles. A matrix surrounds the particulate and is present from 0.25 to 1 pound per gallon of dispersant coated particulate.
The invention was made in recognition of the need for a more efficient system and process for producing expanded polystyrene (EPS) beads coated with a coating composition and a concrete mixture containing the coated EPS
beads.
U.S. Patent No. 4,433,029 issued February 21, 1984 to Senda et al., discloses expandable thermoplastic polymer beads and method of producing same, wherein a core of a polymer of one or more vinyl monomers is substantially surrounded by a layer of a polyolefin comprising one or more vinyl monomers, with a foaming agent contained in at least the core.
U.S. Patent No. 7,128,973 issued October 31, 2006 to Park disclose expanded polystyrene particles having a polyvinyl acetate resin-based functional skin layer, and a process thereof are provided. The particle includes an inner expanded polystyrene layer; and a functional skin layer.
U.S. Patent No. 7,255,738 issued August 14, 2007 to Semmens describe a lightweight cementitious composite material includes expanded synthetic polymer particulate having a particle size of between 0.0625 and 0.5 inches. A
dispersant coating on said particulate suppresses electrostatic attraction between particulate particles. A matrix surrounds the particulate and is present from 0.25 to 1 pound per gallon of dispersant coated particulate.
The invention was made in recognition of the need for a more efficient system and process for producing expanded polystyrene (EPS) beads coated with a coating composition and a concrete mixture containing the coated EPS
beads.
4 SUMMARY OF THE INVENTION
An object of the present invention is, thus, to provide a system and process for producing expanded polystyrene (EPS) beads coated with a coating composition, a coating composition used therefore, and a concrete mixture containing the coated EPS.
In accordance with an aspect of the present invention, there is provided a process for applying a coating composition (hereinafter referred to, also, as Vidabode Coating or VBC) to the EPS beads, and temporarily eliminating the restrictive gas layer, thus enabling the concrete in the mixture to adhere fully, and permanently to the EPS beads, the end result being a mixture that can be poured or distributed to form exceedingly strong structural lightweight material, unique in it's characteristics of strength and stability when compared to previous EPS
concrete products.
In accordance with another aspect of the present invention, there is provided a system having a reservoir, a coating chamber, the reservoir and the coating chamber being interconnected through a piping circuit, which delivers a pressurized fluid composition from the reservoir to the coating chamber, the coating chamber having an EPS beads inlet and an outlet duct, the EPS beads outlet duct being provided with a sieve, an air chamber, the air chamber being in communication with the coating chamber, a spraying assembly for delivering a fluid composition from the piping circuit into the coating chamber, a blower for providing forced air into the air chamber and an air diffuser plate, the air diffuser plate being positioned between the coating chamber and the air chamber so that forced air is introduced from the air chamber into the coating chamber through the air diffuser plate.
In accordance with still another aspect of the present invention, there is provided a coating composition (VBC) for coating EPS beads.
In accordance with still another object of the present invention, there is provided a concrete mixture (hereinafter referred to, also, as VidacreteTM) containing, among other constituents, the EPS beads coated with the coating composition (VBC) of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
Exemplary embodiments of the present invention will now be described, by way of example, in conjunction with the following drawing, in which:
Fig. 1 shows a system for coating EPS beads with the coating composition (VBC) in accordance with an embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
The following description is presented to enable a person skilled in the art or science to which the present invention pertains to make and use the invention, and is provided in the context of a particular application and its requirements.
Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art or science, and the general principles defined herein may be applied to other embodiments and applications without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments disclosed, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
Referring to Fig. 1 shown is the system for coating EPS beads with the coating composition (VBC) in accordance with a preferred embodiment of the present invention. The coating composition (12), in the form of a solution, is drawn from a reservoir (1) by a supply pipe (2) through a filter/strainer (3).
A
check valve (4) is pulled open by pump (5) suction. If the pump (5) is shut down, the check valve (4) closes to prevent loss of prime. The pump (5) pressurizes the coating fluid for deliver through the piping circuit. Should outlet flow become restricted as sensed by a pressure sensor (8), a pressure activated by-pass (6) diverts flow back to the reservoir. Pressure can be monitored, for example, by a pressure gauge (9). A supply manifold (10) which houses a plurality of nozzles (11) is provided to deliver the spray coating (12) in a coating chamber (24).
The system further includes a blower (13), which provides forced air (14) in the air chamber (15) to pass through an air diffuser plate (16). The inlet from the expander (17) and inlet duct (18) bring in the uncoated EPS beads. The coating composition (12) is sprayed on and the coated EPS beads (21) are forced through a rotating sieve (22) to ensure a maximum size specification is met prior to exiting at the outlet to a storage silo (23).
The specific purpose of the coating composition of the present invention is to enable concrete to adhere to EPS beads in a concrete and EPS mixture, and the purpose of said light-weight concrete mixture being to enable the creation of a uniquely strong and sturdy lightweight concrete that is used to manufacture pre-cast concrete panels used to construct cost-effective homes that are energy-efficient, arid withstand wind, fire, flood and earthquake to meet the variable structural challenges of a changing world climate.
The structural light-weight concrete formula was designed to allow for the creation, through a specific and proprietary production process, of pre-cast structural concrete wall and roof panels that can be transported to construction sites and set into position creating a simplified, light-weight cost-effective concrete structure that will withstand any climate and weather damage.
Said light-weight concrete mixture can be molded into wall and roof forms which are then conveyed into a specifically designed curing facility, where it will cure sufficiently to be removed from the curing area and transported in less than approximately 3.0 hours. The pre-cast wall and roof panels can be transported to building sites in sequence, and set into position on a prepared certified engineered foundation, and fastened together utilizing a two-part adhesive;
said methods result in a three-dimensional structure that is fire, wind, water/flood, earthquake/seismic, mold/mildew, and pest resistant, suitable for all geographic regions and climates.
An example of a concrete mixture (VidacreteTM) of the present invention is provided hereinbelow in Table 1:
Table 1 Material 96psf Type 10 Cement 460 kg Silica Fume 0 kg Sand (SSD) 895 kg Water 128.5 L
Euco CIA 1.5L
Plastol 5000 4.9 L
Fibers (AFT 50 mm) 4.6 kg EPS Beads 0.368 m3 As explained above, the EPS beads are coated with the coating composition (12) of the present invention, which is designed to eliminate a restrictive gas layer on EPS beads that otherwise prevents concrete from adhering to EPS beads properly.
The coating composition (12) adheres to the beads, and has a porosity allowing the gas to dissipate, thus enabling a strong attraction and permanent adherence of the concrete to the EPS beads, with said adherence of concrete to EPS beads creating a mixture that can be pre-cast into panels significantly stronger and sturdier structurally than existing methods allow for. The coating creates strength and sturdiness in an EPS and concrete mixture, where previous EPS concrete mixtures failed.
In accordance with a preferred embodiment of the invention, the elements of the coating composition (12) are as follows: Thalcyanine (1 part per 100) and Polyvinyl acetate (free radical vinyl polymerization of the monomer vinyl acetate) and Polyvinyl alcohol and various additives, known to a person skilled in the art, to improve flow and surface wetting. This treatment encourages adhesion of the cementitious portion of the VidacreteTM mix to the bead resulting in increased strength of the overall composite.
free radical ~H,,= vinyl polymerization ~~ - +CH~ -CH~
O
i i C=0 C=O
CH3 ~~~
iinyl acetate poly(vinyl acetate) In a first step, the beads are specifically made to the correct size and density for the process, within the manufacturing plant, as known to a person skilled in art, for the purpose of creating the Expanded Polystyrene (EPS) material that is used at this stage in the process. For example, pre-expanders which come equipped with "fluid bed dryers" for the finishing of the EPS beads once they have been expanded to the proper size from their original resin state may be used. Once the EPS beads have been treated through the spray application of the coating composition, they are transported from the fluid bed dryer to the EPS bead air conveyor to silos with measured portions of the beads being moved to the mixer by an air conveyor system and placed in pre-measured bins. The beads in the EPS bins are emptied into the automated concrete batch mixers at the correct time, as one skilled in the art would know. Sequencing of time and conveyance of EPS and all other materials will be handled by a computer automation system which is known and normally used by those skilled in the art pertaining to the present invention.
The advantage of having expanded polystyrene beads in the concrete mixture of the present invention, is readily apparent to a person skilled in the art, and is fourfold:
1) It creates a lighter concrete mixture, more useable in light construction such as homes and some commercial buildings. The concrete mixture of the present invention weighs about 95 (-+) pounds per cubic foot as compared to regular concrete which weighs 150 pounds per cubic foot;
2) The coating treatment causes the concrete to be attracted to the beads. This adds greatly to the strength of the panels;
3) The concrete mixture of the present invention is fireproof with the burn characteristics of asbestos cement; this means that it does not contribute to or assist combustion in any way nor is there any form of "off-gassing"; and 4) The coating process allows finished panels to have microscopic air pockets that prevent the advent of cracking or spalling (flaking of surface layers of the concrete) in very cold temperatures.
In accordance with the present invention, the EPS bead, as component of concrete mixture, should be of a consistent size of approximately 3/16 inch in diameter. The sand, as a component of cementitious mixture, can be washed, coarse "broken" granule concrete sand. It is preferable, to have non-reactive sand consisting of broken granite, however, although preferable, it is to be understood that the availability of the sand with all of these characteristics is limited and any sand or the like known to a person skilled in the art may be used in accordance with the invention.
In a preferred embodiment, in winter conditions, the sand may be heated during the manufacture of the mixture.
One mixing sequence, in accordance with the invention, may require that the sand, cement and water be placed in the mixer first, and after several rotations, the additives and fibers are added (specific by weight and volume), and the mixer further rotated. Once it is clear to a person skilled in the art that the contents are thoroughly mixed, the EPS beads are added and the mixer runs for a short time (for example, 10-15 seconds) in order to draw the EPS beads completely into the mix. However, after the step of adding the EPS beads to the mixture the mixer may run for any period of time necessary for the beads to become homogenously distributed into the mixture. However, the entire mixing process should not exceed approximately 90 seconds.
Any mixer known in the art, which is suitable to the present invention, can be used. However, preferably, the mixer can be a twin shaft mixer; with mixing paddles designed to draw the EPS beads down into the mixture, and if said paddles are not designed to specifications, the EPS beads will float on top of the mix without properly becoming a part of the mass mixture, and will wear down through the abrasive action of the aggregate in the mix.
The fiber additive can be a polypropylene material.
The elements of the coating composition are preferably maintained in a temperature that is above freezing. The beads are sprayed with the coating composition and dried in a fluid bed dryer and transported to holding silos to await introduction into the cementitious mixture.
As stated above, the coating composition and process for applying the coating composition to EPS beads enable the concrete in the cementitious mixture to adhere to EPS beads.
The production of EPS beads requires a Fluid Bed Dryer (FBD) in order to obtain maximum efficiency in the production of EPS beads. The purpose of the FBD is to prepare the beads for other uses such as block consolidation or molding into packing materials, etc.
The FBD consists of an open topped container with a screened cover. The size varies according to the assigned production of the EPS pre-expander attached thereto. (The expander is referred to as a pre-expander because in normal usage, the beads are introduced into molds, etc. where the expansion is furthered by another injection of steam in a partial vacuum atmosphere). In a preferred embodiment, the size of the FBD in the Vida Production System is approximately 5.5 meters long, 1.4 meters wide and 1 meter deep. The bottom of the FBD consists of a perforated aluminum plate. A high-speed fan provides the necessary air pressure to provide a constant strong airflow through the perforations.
The expanded EPS beads are introduced from the pre-expander into the FBD where the airflow agitates the beads and suspends in the air in a tumbling motion so as to dry the condensed water from the steam in the pre-expander.
The tumbling beads are moved to the end away from the expander. They pour over an interior bulkhead into an agitator that propels them through a specifically sized screen into a high-speed airflow, which carries them into the mesh silos where they dry further before being mixed in Vidacrete according to a specific formula.
As the beads are carried out of the FBD, they are coated with the Vida Bead Coating (VBC) by means of airless spray nozzles mounted at the top of the FBD approximately 60 degrees upstream of the interior bulkhead. The spray nozzles are specifically sized to the viscosity of the VBC and to the pressure required to provide the precise coverage of the passing beads.
The airless pump is a modification of the airless paint systems widely used. The use of the FBD for such coatings is widely used in the industry.
Most commonly, the beads are coated with a light oil that is required in some molding procedures.
INDUSTRIAL APPLICABILITY
The concrete as obtained by the process described above exhibits "wood"
characteristics when driving nails or inserting screws. There is no need for pilot holes or anchoring required to adhere items to panels of concrete obtained as described above. There is no cracking or spalling of the surface in these applications. The concrete as obtained above also requires less effort to make modifications than regular concrete. Additional window and doors can easily be effected with a simple abrasive saw.
The resulting concrete mixture is a cost-effective structural lightweight concrete that is fire, wind, water/flood, earthquake/seismic, mold/mildew, and pest resistant, suitable for all geographic regions and climates, and which is approximately half the weigh of regular concrete. Said structural lightweight concrete has a specific and innovative formula of additives, cement powder, water, EPS beads of a specific size, coated by a specific compound.
LIST OF REFERENCE NUMERALS:
1 Reservoir 2 Supply pipe 3 Filter/strainer 4 Check valve Pump 6 Pressure activated bypass 7 Return pipe 8 Pressure sensor 9 Pressure gauge Supply manifold 11 Spray nozzle 12 Spray coating 13 Blower 14 Forced air Air chamber 16 Air diffuser plate 17 Inlet from expander 18 Inlet duct 19 Uncoated EPS beads Outlet duct 21 Coated EPS beads 22 Rotating sieve 23 Outlet to storage silo 24 Coating chamber
An object of the present invention is, thus, to provide a system and process for producing expanded polystyrene (EPS) beads coated with a coating composition, a coating composition used therefore, and a concrete mixture containing the coated EPS.
In accordance with an aspect of the present invention, there is provided a process for applying a coating composition (hereinafter referred to, also, as Vidabode Coating or VBC) to the EPS beads, and temporarily eliminating the restrictive gas layer, thus enabling the concrete in the mixture to adhere fully, and permanently to the EPS beads, the end result being a mixture that can be poured or distributed to form exceedingly strong structural lightweight material, unique in it's characteristics of strength and stability when compared to previous EPS
concrete products.
In accordance with another aspect of the present invention, there is provided a system having a reservoir, a coating chamber, the reservoir and the coating chamber being interconnected through a piping circuit, which delivers a pressurized fluid composition from the reservoir to the coating chamber, the coating chamber having an EPS beads inlet and an outlet duct, the EPS beads outlet duct being provided with a sieve, an air chamber, the air chamber being in communication with the coating chamber, a spraying assembly for delivering a fluid composition from the piping circuit into the coating chamber, a blower for providing forced air into the air chamber and an air diffuser plate, the air diffuser plate being positioned between the coating chamber and the air chamber so that forced air is introduced from the air chamber into the coating chamber through the air diffuser plate.
In accordance with still another aspect of the present invention, there is provided a coating composition (VBC) for coating EPS beads.
In accordance with still another object of the present invention, there is provided a concrete mixture (hereinafter referred to, also, as VidacreteTM) containing, among other constituents, the EPS beads coated with the coating composition (VBC) of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
Exemplary embodiments of the present invention will now be described, by way of example, in conjunction with the following drawing, in which:
Fig. 1 shows a system for coating EPS beads with the coating composition (VBC) in accordance with an embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
The following description is presented to enable a person skilled in the art or science to which the present invention pertains to make and use the invention, and is provided in the context of a particular application and its requirements.
Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art or science, and the general principles defined herein may be applied to other embodiments and applications without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments disclosed, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
Referring to Fig. 1 shown is the system for coating EPS beads with the coating composition (VBC) in accordance with a preferred embodiment of the present invention. The coating composition (12), in the form of a solution, is drawn from a reservoir (1) by a supply pipe (2) through a filter/strainer (3).
A
check valve (4) is pulled open by pump (5) suction. If the pump (5) is shut down, the check valve (4) closes to prevent loss of prime. The pump (5) pressurizes the coating fluid for deliver through the piping circuit. Should outlet flow become restricted as sensed by a pressure sensor (8), a pressure activated by-pass (6) diverts flow back to the reservoir. Pressure can be monitored, for example, by a pressure gauge (9). A supply manifold (10) which houses a plurality of nozzles (11) is provided to deliver the spray coating (12) in a coating chamber (24).
The system further includes a blower (13), which provides forced air (14) in the air chamber (15) to pass through an air diffuser plate (16). The inlet from the expander (17) and inlet duct (18) bring in the uncoated EPS beads. The coating composition (12) is sprayed on and the coated EPS beads (21) are forced through a rotating sieve (22) to ensure a maximum size specification is met prior to exiting at the outlet to a storage silo (23).
The specific purpose of the coating composition of the present invention is to enable concrete to adhere to EPS beads in a concrete and EPS mixture, and the purpose of said light-weight concrete mixture being to enable the creation of a uniquely strong and sturdy lightweight concrete that is used to manufacture pre-cast concrete panels used to construct cost-effective homes that are energy-efficient, arid withstand wind, fire, flood and earthquake to meet the variable structural challenges of a changing world climate.
The structural light-weight concrete formula was designed to allow for the creation, through a specific and proprietary production process, of pre-cast structural concrete wall and roof panels that can be transported to construction sites and set into position creating a simplified, light-weight cost-effective concrete structure that will withstand any climate and weather damage.
Said light-weight concrete mixture can be molded into wall and roof forms which are then conveyed into a specifically designed curing facility, where it will cure sufficiently to be removed from the curing area and transported in less than approximately 3.0 hours. The pre-cast wall and roof panels can be transported to building sites in sequence, and set into position on a prepared certified engineered foundation, and fastened together utilizing a two-part adhesive;
said methods result in a three-dimensional structure that is fire, wind, water/flood, earthquake/seismic, mold/mildew, and pest resistant, suitable for all geographic regions and climates.
An example of a concrete mixture (VidacreteTM) of the present invention is provided hereinbelow in Table 1:
Table 1 Material 96psf Type 10 Cement 460 kg Silica Fume 0 kg Sand (SSD) 895 kg Water 128.5 L
Euco CIA 1.5L
Plastol 5000 4.9 L
Fibers (AFT 50 mm) 4.6 kg EPS Beads 0.368 m3 As explained above, the EPS beads are coated with the coating composition (12) of the present invention, which is designed to eliminate a restrictive gas layer on EPS beads that otherwise prevents concrete from adhering to EPS beads properly.
The coating composition (12) adheres to the beads, and has a porosity allowing the gas to dissipate, thus enabling a strong attraction and permanent adherence of the concrete to the EPS beads, with said adherence of concrete to EPS beads creating a mixture that can be pre-cast into panels significantly stronger and sturdier structurally than existing methods allow for. The coating creates strength and sturdiness in an EPS and concrete mixture, where previous EPS concrete mixtures failed.
In accordance with a preferred embodiment of the invention, the elements of the coating composition (12) are as follows: Thalcyanine (1 part per 100) and Polyvinyl acetate (free radical vinyl polymerization of the monomer vinyl acetate) and Polyvinyl alcohol and various additives, known to a person skilled in the art, to improve flow and surface wetting. This treatment encourages adhesion of the cementitious portion of the VidacreteTM mix to the bead resulting in increased strength of the overall composite.
free radical ~H,,= vinyl polymerization ~~ - +CH~ -CH~
O
i i C=0 C=O
CH3 ~~~
iinyl acetate poly(vinyl acetate) In a first step, the beads are specifically made to the correct size and density for the process, within the manufacturing plant, as known to a person skilled in art, for the purpose of creating the Expanded Polystyrene (EPS) material that is used at this stage in the process. For example, pre-expanders which come equipped with "fluid bed dryers" for the finishing of the EPS beads once they have been expanded to the proper size from their original resin state may be used. Once the EPS beads have been treated through the spray application of the coating composition, they are transported from the fluid bed dryer to the EPS bead air conveyor to silos with measured portions of the beads being moved to the mixer by an air conveyor system and placed in pre-measured bins. The beads in the EPS bins are emptied into the automated concrete batch mixers at the correct time, as one skilled in the art would know. Sequencing of time and conveyance of EPS and all other materials will be handled by a computer automation system which is known and normally used by those skilled in the art pertaining to the present invention.
The advantage of having expanded polystyrene beads in the concrete mixture of the present invention, is readily apparent to a person skilled in the art, and is fourfold:
1) It creates a lighter concrete mixture, more useable in light construction such as homes and some commercial buildings. The concrete mixture of the present invention weighs about 95 (-+) pounds per cubic foot as compared to regular concrete which weighs 150 pounds per cubic foot;
2) The coating treatment causes the concrete to be attracted to the beads. This adds greatly to the strength of the panels;
3) The concrete mixture of the present invention is fireproof with the burn characteristics of asbestos cement; this means that it does not contribute to or assist combustion in any way nor is there any form of "off-gassing"; and 4) The coating process allows finished panels to have microscopic air pockets that prevent the advent of cracking or spalling (flaking of surface layers of the concrete) in very cold temperatures.
In accordance with the present invention, the EPS bead, as component of concrete mixture, should be of a consistent size of approximately 3/16 inch in diameter. The sand, as a component of cementitious mixture, can be washed, coarse "broken" granule concrete sand. It is preferable, to have non-reactive sand consisting of broken granite, however, although preferable, it is to be understood that the availability of the sand with all of these characteristics is limited and any sand or the like known to a person skilled in the art may be used in accordance with the invention.
In a preferred embodiment, in winter conditions, the sand may be heated during the manufacture of the mixture.
One mixing sequence, in accordance with the invention, may require that the sand, cement and water be placed in the mixer first, and after several rotations, the additives and fibers are added (specific by weight and volume), and the mixer further rotated. Once it is clear to a person skilled in the art that the contents are thoroughly mixed, the EPS beads are added and the mixer runs for a short time (for example, 10-15 seconds) in order to draw the EPS beads completely into the mix. However, after the step of adding the EPS beads to the mixture the mixer may run for any period of time necessary for the beads to become homogenously distributed into the mixture. However, the entire mixing process should not exceed approximately 90 seconds.
Any mixer known in the art, which is suitable to the present invention, can be used. However, preferably, the mixer can be a twin shaft mixer; with mixing paddles designed to draw the EPS beads down into the mixture, and if said paddles are not designed to specifications, the EPS beads will float on top of the mix without properly becoming a part of the mass mixture, and will wear down through the abrasive action of the aggregate in the mix.
The fiber additive can be a polypropylene material.
The elements of the coating composition are preferably maintained in a temperature that is above freezing. The beads are sprayed with the coating composition and dried in a fluid bed dryer and transported to holding silos to await introduction into the cementitious mixture.
As stated above, the coating composition and process for applying the coating composition to EPS beads enable the concrete in the cementitious mixture to adhere to EPS beads.
The production of EPS beads requires a Fluid Bed Dryer (FBD) in order to obtain maximum efficiency in the production of EPS beads. The purpose of the FBD is to prepare the beads for other uses such as block consolidation or molding into packing materials, etc.
The FBD consists of an open topped container with a screened cover. The size varies according to the assigned production of the EPS pre-expander attached thereto. (The expander is referred to as a pre-expander because in normal usage, the beads are introduced into molds, etc. where the expansion is furthered by another injection of steam in a partial vacuum atmosphere). In a preferred embodiment, the size of the FBD in the Vida Production System is approximately 5.5 meters long, 1.4 meters wide and 1 meter deep. The bottom of the FBD consists of a perforated aluminum plate. A high-speed fan provides the necessary air pressure to provide a constant strong airflow through the perforations.
The expanded EPS beads are introduced from the pre-expander into the FBD where the airflow agitates the beads and suspends in the air in a tumbling motion so as to dry the condensed water from the steam in the pre-expander.
The tumbling beads are moved to the end away from the expander. They pour over an interior bulkhead into an agitator that propels them through a specifically sized screen into a high-speed airflow, which carries them into the mesh silos where they dry further before being mixed in Vidacrete according to a specific formula.
As the beads are carried out of the FBD, they are coated with the Vida Bead Coating (VBC) by means of airless spray nozzles mounted at the top of the FBD approximately 60 degrees upstream of the interior bulkhead. The spray nozzles are specifically sized to the viscosity of the VBC and to the pressure required to provide the precise coverage of the passing beads.
The airless pump is a modification of the airless paint systems widely used. The use of the FBD for such coatings is widely used in the industry.
Most commonly, the beads are coated with a light oil that is required in some molding procedures.
INDUSTRIAL APPLICABILITY
The concrete as obtained by the process described above exhibits "wood"
characteristics when driving nails or inserting screws. There is no need for pilot holes or anchoring required to adhere items to panels of concrete obtained as described above. There is no cracking or spalling of the surface in these applications. The concrete as obtained above also requires less effort to make modifications than regular concrete. Additional window and doors can easily be effected with a simple abrasive saw.
The resulting concrete mixture is a cost-effective structural lightweight concrete that is fire, wind, water/flood, earthquake/seismic, mold/mildew, and pest resistant, suitable for all geographic regions and climates, and which is approximately half the weigh of regular concrete. Said structural lightweight concrete has a specific and innovative formula of additives, cement powder, water, EPS beads of a specific size, coated by a specific compound.
LIST OF REFERENCE NUMERALS:
1 Reservoir 2 Supply pipe 3 Filter/strainer 4 Check valve Pump 6 Pressure activated bypass 7 Return pipe 8 Pressure sensor 9 Pressure gauge Supply manifold 11 Spray nozzle 12 Spray coating 13 Blower 14 Forced air Air chamber 16 Air diffuser plate 17 Inlet from expander 18 Inlet duct 19 Uncoated EPS beads Outlet duct 21 Coated EPS beads 22 Rotating sieve 23 Outlet to storage silo 24 Coating chamber
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2635516 CA2635516A1 (en) | 2008-06-20 | 2008-06-20 | System and process for producing expanded polystyrene (eps) beads coated with a coating composition, composition used therefor, and a concrete mixture containing same |
| CA 2669703 CA2669703A1 (en) | 2008-06-20 | 2009-06-19 | Concrete mixtures containing expanded polystyrene (eps) beads coated with a coating composition |
| PCT/CA2009/000851 WO2009152617A1 (en) | 2008-06-20 | 2009-06-19 | Concrete mixtures containing expanded polystyrene (eps) beads coated with a coating composition |
| CA 2669707 CA2669707A1 (en) | 2008-06-20 | 2009-06-19 | A system and process for producing expanded polystyrene (eps) beads coated with a coating composition and a composition used therefor |
| PCT/CA2009/000850 WO2009152616A1 (en) | 2008-06-20 | 2009-06-19 | A system and process for producing expanded polystyrene (eps) beads coated with a coating composition and a composition used therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2635516 CA2635516A1 (en) | 2008-06-20 | 2008-06-20 | System and process for producing expanded polystyrene (eps) beads coated with a coating composition, composition used therefor, and a concrete mixture containing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2635516A1 true CA2635516A1 (en) | 2009-12-20 |
Family
ID=41433627
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2635516 Abandoned CA2635516A1 (en) | 2008-06-20 | 2008-06-20 | System and process for producing expanded polystyrene (eps) beads coated with a coating composition, composition used therefor, and a concrete mixture containing same |
| CA 2669703 Abandoned CA2669703A1 (en) | 2008-06-20 | 2009-06-19 | Concrete mixtures containing expanded polystyrene (eps) beads coated with a coating composition |
| CA 2669707 Abandoned CA2669707A1 (en) | 2008-06-20 | 2009-06-19 | A system and process for producing expanded polystyrene (eps) beads coated with a coating composition and a composition used therefor |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2669703 Abandoned CA2669703A1 (en) | 2008-06-20 | 2009-06-19 | Concrete mixtures containing expanded polystyrene (eps) beads coated with a coating composition |
| CA 2669707 Abandoned CA2669707A1 (en) | 2008-06-20 | 2009-06-19 | A system and process for producing expanded polystyrene (eps) beads coated with a coating composition and a composition used therefor |
Country Status (2)
| Country | Link |
|---|---|
| CA (3) | CA2635516A1 (en) |
| WO (2) | WO2009152617A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103386757B (en) * | 2013-07-24 | 2015-07-08 | 芜湖市伟华泡塑有限公司 | Forming process and system for manufacturing packaging expanded polystyrene |
| US20220371959A1 (en) | 2019-10-22 | 2022-11-24 | "Icl" Innovation Concrete Laboratory Korlátoit Felelösségü Tárasaság | Admixture composition for the production of lightweight concrete containing polystyrene beads, process for the preparation of the composition and its application |
| CN114315412B (en) * | 2022-01-27 | 2022-10-11 | 西安建筑科技大学 | Modified EPS particles, modification method thereof, concrete containing modified EPS particles and preparation method thereof |
| WO2024025699A1 (en) * | 2022-07-26 | 2024-02-01 | Composite LLC | System and method for a cementitious fiber reinforced building material |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE580072A (en) * | 1958-07-03 | |||
| US3257338A (en) * | 1963-02-20 | 1966-06-21 | Koppers Co Inc | Concrete composition comprising cement, primary aggregate, particulate expanded polystyrene and a homogenizing agent |
| US3764357A (en) * | 1970-03-30 | 1973-10-09 | A Bowles | Method of preparing lightweight concrete and plaster and the lightweight concrete and plaster thus prepared |
| IT1000856B (en) * | 1973-12-14 | 1976-04-10 | Cattaneo M | PROCEDURE AND MEANS FOR THE INVOLU CRATION OF BALLS OF EXPANDED POLYSTYRENE SUITABLE FOR THE PRODUCTION OF LIGHTENED CEMENT MUFFLES, NOT THAT FORMULATION THAT CAN BE USED WITH THE PROCEDURE |
| GB2095227B (en) * | 1981-03-24 | 1985-05-01 | Cempol Sales | Making lightweight concrete |
| US5418107A (en) * | 1993-08-13 | 1995-05-23 | Xerox Corporation | Process for fabricating an electrophotographic imaging members |
| US5593624A (en) * | 1995-05-24 | 1997-01-14 | Lewis; Eugene R. | Method for making cellular packaging board with inhibitor |
| AUPP970099A0 (en) * | 1999-04-09 | 1999-05-06 | James Hardie International Finance B.V. | Concrete formulation |
| KR100483702B1 (en) * | 2002-10-29 | 2005-04-19 | 이대균 | The method for manufacturing of heatproof and light weight for materials |
| CN100422245C (en) * | 2004-01-30 | 2008-10-01 | 波尔玛有限公司 | Expanded polystyrene bead having functional skin layer, manufacturing process thereof, and functional eps product and manufacturing process thereof using the same |
| CA2644417A1 (en) * | 2006-03-22 | 2007-10-04 | Nova Chemicals Inc. | Lightweight concrete compositions containing antimicrobial agents |
-
2008
- 2008-06-20 CA CA 2635516 patent/CA2635516A1/en not_active Abandoned
-
2009
- 2009-06-19 CA CA 2669703 patent/CA2669703A1/en not_active Abandoned
- 2009-06-19 WO PCT/CA2009/000851 patent/WO2009152617A1/en active Application Filing
- 2009-06-19 WO PCT/CA2009/000850 patent/WO2009152616A1/en active Application Filing
- 2009-06-19 CA CA 2669707 patent/CA2669707A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CA2669707A1 (en) | 2009-12-20 |
| WO2009152616A1 (en) | 2009-12-23 |
| WO2009152617A1 (en) | 2009-12-23 |
| CA2669703A1 (en) | 2009-12-20 |
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