CA2457601C - Cement composition - Google Patents
Cement composition Download PDFInfo
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- CA2457601C CA2457601C CA 2457601 CA2457601A CA2457601C CA 2457601 C CA2457601 C CA 2457601C CA 2457601 CA2457601 CA 2457601 CA 2457601 A CA2457601 A CA 2457601A CA 2457601 C CA2457601 C CA 2457601C
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- cement
- cement composition
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- concrete
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Abstract
The present invention relates to a novel cement composition.
This cement may be combined with a number of different products, including residual materials of polystyrene, glass, cork, fibreglass, cellulose fibers, wood fibers and wood shavings, as well as with the zonolite, vermiculite and minerals. The resultant concrete exhibits physical and chemical characteristics that makes it suitable for use in construction projects, including resistance to freeze-thaw cycles.
This cement may be combined with a number of different products, including residual materials of polystyrene, glass, cork, fibreglass, cellulose fibers, wood fibers and wood shavings, as well as with the zonolite, vermiculite and minerals. The resultant concrete exhibits physical and chemical characteristics that makes it suitable for use in construction projects, including resistance to freeze-thaw cycles.
Description
i TITLE OF THE INVENTION
CEMENT COMPOSITION
FIELD OF THE INVENTION
The present invention relates to a novel cement composition, this composition of cement of two components as defined in the claim. The composition of this c~°ment makes it suitable for combination with a number of different products, including residual materials the polystyrene, glass, cork, fibreglass, cellulose fibers, wood fibers and wood shavings, as well as with the zonolite, vermiculite and minerals.
BACKGROUND OF THE INVENTION
In cement and concrete technology, considerable effort has been devoted to developing nigh-strength materials with increased durability.
Cement-based materials are extremely complex substances containing inorganic, solid, crystalline and amorphous components. Their properties clepend upon permeability, porosity, dimensional stability, mechanical strength and the nature of the bonds between the numerous components.
Interfacial investigations have resulted in a better understanding of the compositional and microstructural changes on the durability and properties of cement-based materials, allowing for innovation in this field.
CEMENT COMPOSITION
FIELD OF THE INVENTION
The present invention relates to a novel cement composition, this composition of cement of two components as defined in the claim. The composition of this c~°ment makes it suitable for combination with a number of different products, including residual materials the polystyrene, glass, cork, fibreglass, cellulose fibers, wood fibers and wood shavings, as well as with the zonolite, vermiculite and minerals.
BACKGROUND OF THE INVENTION
In cement and concrete technology, considerable effort has been devoted to developing nigh-strength materials with increased durability.
Cement-based materials are extremely complex substances containing inorganic, solid, crystalline and amorphous components. Their properties clepend upon permeability, porosity, dimensional stability, mechanical strength and the nature of the bonds between the numerous components.
Interfacial investigations have resulted in a better understanding of the compositional and microstructural changes on the durability and properties of cement-based materials, allowing for innovation in this field.
Portland cement concrete, which is a composite material, is currently the most widely used manufactured material. Based on observations worldwide, the future of concrete looks promising because it offers suitable engineering properties at low cost combined with energy-sa~~ing and ecological benefits.
Despite this, there are notable limitations to the use of cement, since it has low strain capacity and is therefore a brittle material.
More recently in the history of cement, the use of residual materials in cement-based composites the silica fume, slag, fly ash and polymers, among others, has stirred an even greater interest in cement technology. For example, rubber tires have been successful reused as an addition to cement paste. The use of such residual materials in cemen~~ compositions not only results in new products with interesting properties, but greatly aids in eliminating environmental waste The flurry of activity in cement technology is indicative of a widespread interest for cost effective yet strong and durable concretes that may be tailored for use in a number of different applications. The present invention seeks to meet this and other needs.
OBJECTS OF THE INVENTION
The general object of the present invention is therefore to provide a new cement composition. This composition is suitable for combination with recycled materials polystyrene.
Despite this, there are notable limitations to the use of cement, since it has low strain capacity and is therefore a brittle material.
More recently in the history of cement, the use of residual materials in cement-based composites the silica fume, slag, fly ash and polymers, among others, has stirred an even greater interest in cement technology. For example, rubber tires have been successful reused as an addition to cement paste. The use of such residual materials in cemen~~ compositions not only results in new products with interesting properties, but greatly aids in eliminating environmental waste The flurry of activity in cement technology is indicative of a widespread interest for cost effective yet strong and durable concretes that may be tailored for use in a number of different applications. The present invention seeks to meet this and other needs.
OBJECTS OF THE INVENTION
The general object of the present invention is therefore to provide a new cement composition. This composition is suitable for combination with recycled materials polystyrene.
SLIlvIMARY OF THE INVENTION
In accordance with the present invention, there is provided a novel cement composition comprising a binding agent and cement. This novel cement composition may additionally include other materials so as to create concrete products that are suitable for various applications. The resultant concrete has desirable physical characteristics, the ability to maintain its integrity ( by being resistant to the degradation or chipping, for example) through dozens of freeze-taw cycles. It serves the additional ecological purpose of eliminating waste that is too often relegated to landfill sites.
Composition of binding agent 1 - An acrylic polymer emulsion;
2 - A vinyl acetate/ethylene copolymer emulsion;
3 - Water added to the first twa components, above. The volume of water to be added will range from a ratio of 1:1 to 3:1 measured relative to the volume of the first two components;
The mixture of the there components will have a pH between 6 and 8.
Cement 1 - 3 parts by volume of Portland cement;
2 - 7 parts by volume of an inorganic aggregate, sand and/or silica with a maximum size of 8C~ Mesh.
Combining the binding agent with 'the cement results in an inert concrete upon water evaporation. Recycled materials for example expanded polystyrene in particle, may be added to the cement/concrete binding agent mixture in a proportion that is 3 times the volume of the cerr~ent/concrete binding agent mixture to create a variety of concrete products.
The cement/binding agent mixture may be combined with other types of residual materials, according to need or demand.
The concrete resulting from the combination of the cement/binding agent mixture has physical properties that demonstrate an excellent adhesion to a residues the glass, cork, fibreglass, cellulose fibers, wood fibers, wood shavings, etc. It may also be combined with zonolite, vermiculite and minerals.
The final composition will depend on the required characteristics of the concrete, aggregates of different sizes being added for different purposes, as known to tho~;e of skill in the art.
The present invention further includes the use of the novel cement composition in a number of applications. For example, it may be molded to prepare panels that are suitable for the construction of walls.
Other objects, advantages and features of the present invention will become more apparent upon reading of the following non restrictive description of preferred embodiments.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Definitions: Unless otherwise spe<.ified, the terms used in the present application have the meanings that a person of skill in the art would normally attribute to them.
DETAILED DESCRIPTION
The present invention relates to a novel cement composition comprising a binding agent and cement. It may additionally comprise recycled materials, polystyrene, glass, cork, fibreglass, cellulose fibers, wood fibers, wood shavings, etc. or be combined with zonolite, vermiculite and minerals.
In accordance with the present invention, there is provided a novel cement composition comprising a binding agent and cement. This novel cement composition may additionally include other materials so as to create concrete products that are suitable for various applications. The resultant concrete has desirable physical characteristics, the ability to maintain its integrity ( by being resistant to the degradation or chipping, for example) through dozens of freeze-taw cycles. It serves the additional ecological purpose of eliminating waste that is too often relegated to landfill sites.
Composition of binding agent 1 - An acrylic polymer emulsion;
2 - A vinyl acetate/ethylene copolymer emulsion;
3 - Water added to the first twa components, above. The volume of water to be added will range from a ratio of 1:1 to 3:1 measured relative to the volume of the first two components;
The mixture of the there components will have a pH between 6 and 8.
Cement 1 - 3 parts by volume of Portland cement;
2 - 7 parts by volume of an inorganic aggregate, sand and/or silica with a maximum size of 8C~ Mesh.
Combining the binding agent with 'the cement results in an inert concrete upon water evaporation. Recycled materials for example expanded polystyrene in particle, may be added to the cement/concrete binding agent mixture in a proportion that is 3 times the volume of the cerr~ent/concrete binding agent mixture to create a variety of concrete products.
The cement/binding agent mixture may be combined with other types of residual materials, according to need or demand.
The concrete resulting from the combination of the cement/binding agent mixture has physical properties that demonstrate an excellent adhesion to a residues the glass, cork, fibreglass, cellulose fibers, wood fibers, wood shavings, etc. It may also be combined with zonolite, vermiculite and minerals.
The final composition will depend on the required characteristics of the concrete, aggregates of different sizes being added for different purposes, as known to tho~;e of skill in the art.
The present invention further includes the use of the novel cement composition in a number of applications. For example, it may be molded to prepare panels that are suitable for the construction of walls.
Other objects, advantages and features of the present invention will become more apparent upon reading of the following non restrictive description of preferred embodiments.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Definitions: Unless otherwise spe<.ified, the terms used in the present application have the meanings that a person of skill in the art would normally attribute to them.
DETAILED DESCRIPTION
The present invention relates to a novel cement composition comprising a binding agent and cement. It may additionally comprise recycled materials, polystyrene, glass, cork, fibreglass, cellulose fibers, wood fibers, wood shavings, etc. or be combined with zonolite, vermiculite and minerals.
Comaosition of binding anent 1 - An acrylic polymer emulsion;
2 - A vinyl acetate/ethylene copolymer emulsion;
3 - Water added to the first two components, above. The volume of water to be added will range from a ratio of 1:1 l0 to 3:1 measured relative to the volume of the two components.
The mixture of the three components will have a pH between 6 and 8.
Cement 1- 3 parts by volume Portland cement;
2- 7 parts by volume of an inorganic aggregate, sand and/or silica with a maximum size of 8G Mesh.
Combining the binding agent with the cement results in an inert concrete upon water evaporation. Recycled materials, expanded polystyrene particles for example, may be added to the cement/concrete binding agent mixture in a proportion of 3 times the volume of the cement/concrete binding agent mixture to create a variety of concrete products.
The cement/binding agent mixture may be combined with other types of residual materials, according to need or demand.
The concrete resulting from the combination of the cement/binding agent mixture has physical properties that demonstrate an excellent adhesion to a residues, glass, cork, fibreglass, cellulose fibers, wood fibE:rs, wood shaving, etc. It may also be combined with zonolite, vermiculite and minerals. The final composition will depend on the required characteristics of the concrete, aggregates of diff~srent sizes being added for different purposes, as known to tho,e of skill in the art.
The cement composition of the present invention may be used in a number of applications where cement has been traditionally used. Interestingly, when recycled polystyrene which has been shredded is ad~~ed to the cement/binding agent described above, the prod pct is a lightweight concrete that is sturdy yet malleable enough that it can be molded into various shapes to suit specific purposes. For example, the cement/binding agent/polystyrene concrete can be converted into slabs that can be used in building construction.
EXAMPLE 1: Preparation of a cement composition Bindina agent A binding agent was prepared by combining 1 volume of Rhoplex tm AC-2829 acrylic polymer emulsion ( 52-54% solid by weight, residual monomers < 0.05, aqueous ammonia 1336-21-6 0.2 max, water 7732-18-5 from 46-4.8%) with 2 volumes of Airflex tm 526BP vinyl acetate/ethylene copolymer emulsion( < 0.01 2-methyl-4-isothiazolin-3-one, 40-60'.~o vinyl acetate/ethylene copolymer, 40-60% water ) Water was added in a quantity the volume of the combined solution of the acrylic polymer and the vinyl-acetate/ethylene copolymer emulsions. ( It was noted experimentally that a volume of v~~ater between 1-3 times the volume of the combined acrylic polymer emulsion and vinyl-acetate/ethylene copolymer emulsion can be added, depending on the desired characteristics of the final concrete product.) The final binding agent solution had a pH between 6 and 8;
Cement 3 parts by volume of Portland cernent were combined with 7 parts by volume of an inorganic aggregate, sand and/or silica, with a maximum size of 80 Mesh.
2 - A vinyl acetate/ethylene copolymer emulsion;
3 - Water added to the first two components, above. The volume of water to be added will range from a ratio of 1:1 l0 to 3:1 measured relative to the volume of the two components.
The mixture of the three components will have a pH between 6 and 8.
Cement 1- 3 parts by volume Portland cement;
2- 7 parts by volume of an inorganic aggregate, sand and/or silica with a maximum size of 8G Mesh.
Combining the binding agent with the cement results in an inert concrete upon water evaporation. Recycled materials, expanded polystyrene particles for example, may be added to the cement/concrete binding agent mixture in a proportion of 3 times the volume of the cement/concrete binding agent mixture to create a variety of concrete products.
The cement/binding agent mixture may be combined with other types of residual materials, according to need or demand.
The concrete resulting from the combination of the cement/binding agent mixture has physical properties that demonstrate an excellent adhesion to a residues, glass, cork, fibreglass, cellulose fibers, wood fibE:rs, wood shaving, etc. It may also be combined with zonolite, vermiculite and minerals. The final composition will depend on the required characteristics of the concrete, aggregates of diff~srent sizes being added for different purposes, as known to tho,e of skill in the art.
The cement composition of the present invention may be used in a number of applications where cement has been traditionally used. Interestingly, when recycled polystyrene which has been shredded is ad~~ed to the cement/binding agent described above, the prod pct is a lightweight concrete that is sturdy yet malleable enough that it can be molded into various shapes to suit specific purposes. For example, the cement/binding agent/polystyrene concrete can be converted into slabs that can be used in building construction.
EXAMPLE 1: Preparation of a cement composition Bindina agent A binding agent was prepared by combining 1 volume of Rhoplex tm AC-2829 acrylic polymer emulsion ( 52-54% solid by weight, residual monomers < 0.05, aqueous ammonia 1336-21-6 0.2 max, water 7732-18-5 from 46-4.8%) with 2 volumes of Airflex tm 526BP vinyl acetate/ethylene copolymer emulsion( < 0.01 2-methyl-4-isothiazolin-3-one, 40-60'.~o vinyl acetate/ethylene copolymer, 40-60% water ) Water was added in a quantity the volume of the combined solution of the acrylic polymer and the vinyl-acetate/ethylene copolymer emulsions. ( It was noted experimentally that a volume of v~~ater between 1-3 times the volume of the combined acrylic polymer emulsion and vinyl-acetate/ethylene copolymer emulsion can be added, depending on the desired characteristics of the final concrete product.) The final binding agent solution had a pH between 6 and 8;
Cement 3 parts by volume of Portland cernent were combined with 7 parts by volume of an inorganic aggregate, sand and/or silica, with a maximum size of 80 Mesh.
Combining the binding agent with the cement resulted in an inert concrete upon water evaporation.
EXAMPLE 2: Preparation of a cement composition The cement composition of Exarnple 1 was combined with shredded recycled expanded polystyrene ( PS ). It was determined experimentally that a volume of the cement composition can be combined with 3 volumes of ( PS ).
Samples of concrete produced in this manner were subjected to freeze-thaw cycles to measure their durability. In one test, the concrete was found not to flake or scale after 15 freeze-thaw cycles. In another test, the concrete was found to have remained intact even after having been subjected to 110 freeze-thaw cycles.
Although the present invention has been described hereinabove by way of preferred embodiments thereof, it can be modified without departing from the spirit, scope and nature of the subject invention, as defined in the appended claims.
EXAMPLE 2: Preparation of a cement composition The cement composition of Exarnple 1 was combined with shredded recycled expanded polystyrene ( PS ). It was determined experimentally that a volume of the cement composition can be combined with 3 volumes of ( PS ).
Samples of concrete produced in this manner were subjected to freeze-thaw cycles to measure their durability. In one test, the concrete was found not to flake or scale after 15 freeze-thaw cycles. In another test, the concrete was found to have remained intact even after having been subjected to 110 freeze-thaw cycles.
Although the present invention has been described hereinabove by way of preferred embodiments thereof, it can be modified without departing from the spirit, scope and nature of the subject invention, as defined in the appended claims.
Claims (5)
1. A cement composition comprising:
i. an acrylic polymer emulsion;
ii. a vinyl acetate/ethylene copolymer emulsion;
iii. water added in a ratio of 1:1 to 3:1 measured relative to the volumes of the acrylic polymer emulsion and vinyl acetate/ethylene copolymer emulsion, resulting in a mixture having a pH between 6 and 8;
iv. 3 parts by volume of a Portland cement;
7 parts by volume of an inorganic aggregate, sand and/or silica with a maximum size of 80 Mesh.
i. an acrylic polymer emulsion;
ii. a vinyl acetate/ethylene copolymer emulsion;
iii. water added in a ratio of 1:1 to 3:1 measured relative to the volumes of the acrylic polymer emulsion and vinyl acetate/ethylene copolymer emulsion, resulting in a mixture having a pH between 6 and 8;
iv. 3 parts by volume of a Portland cement;
7 parts by volume of an inorganic aggregate, sand and/or silica with a maximum size of 80 Mesh.
2. A cement composition as defined in claim 1, further comprising residual materials or minerals.
3. A cement composition as defined in claim 2, wherein said residual materials is selected from the group consisting of:
polystyrene, glass, cork, fibreglass, cellulose fibers, wood fibers and wood shavings.
polystyrene, glass, cork, fibreglass, cellulose fibers, wood fibers and wood shavings.
4. A cement composition as defined in claim 2, wherein said residual material is polystyrene.
5. A cement composition as defined in claim 4, wherein said polystyrene is present in a volume that is 3 times the volume of the cement composition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US47313903P | 2003-05-27 | 2003-05-27 | |
| US60/473,139 | 2003-05-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2457601A1 CA2457601A1 (en) | 2004-06-02 |
| CA2457601C true CA2457601C (en) | 2005-07-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2457601 Expired - Fee Related CA2457601C (en) | 2003-05-27 | 2004-02-20 | Cement composition |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2457601C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2528092B1 (en) * | 2013-08-02 | 2016-08-23 | Green Rock, Sl. | Techno-sustainable industrial bio-mortar |
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2004
- 2004-02-20 CA CA 2457601 patent/CA2457601C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CA2457601A1 (en) | 2004-06-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20200220 |