CA2800435A1 - Rubber asphalt composite block - Google Patents
Rubber asphalt composite block Download PDFInfo
- Publication number
- CA2800435A1 CA2800435A1 CA 2800435 CA2800435A CA2800435A1 CA 2800435 A1 CA2800435 A1 CA 2800435A1 CA 2800435 CA2800435 CA 2800435 CA 2800435 A CA2800435 A CA 2800435A CA 2800435 A1 CA2800435 A1 CA 2800435A1
- Authority
- CA
- Canada
- Prior art keywords
- asphalt
- rubber
- crumb rubber
- paving block
- approximately
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C5/00—Pavings made of prefabricated single units
- E01C5/22—Pavings made of prefabricated single units made of units composed of a mixture of materials covered by two or more of groups E01C5/008, E01C5/02 - E01C5/20 except embedded reinforcing materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
-
- 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
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
- C08J2395/00—Bituminous materials, e.g. asphalt, tar or pitch
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/30—Environmental or health characteristics, e.g. energy consumption, recycling or safety issues
- C08L2555/34—Recycled or waste materials, e.g. reclaimed bitumen, asphalt, roads or pathways, recycled roof coverings or shingles, recycled aggregate, recycled tires, crumb rubber, glass or cullet, fly or fuel ash, or slag
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Road Paving Structures (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A molded composite paving block formed from desired proportions of reclaimed asphalt, industrial and residential waste plastics, and crumb rubber. Crumb rubber is shredded and grounded scrap automobile tires with cords. The process includes steps of grounding, mixing, heating and blending and molding.
Description
.' =
RUBBER ASPHALT COMPOSITE BLOCK
Industry Industne A/M/J
.... YAND
Canada Canada FIELD OF THE INVENTION
This invention relates to rubber asphalt composite paving block used to construct roadways, driveways, parking lots and the like.
BACKGROUND OF THE INVENTION
In the United States approximately one tire is discarded per person each year.
The U.S.
Environmental Protection Agency estimates that 250 million scrap tires are generated in the United States each year, not counting another 45 million scrap tires that are used to make 34.5 million automobile and truck tire retreads every year. Until the 1960s, rubber from scrap tires was recycled, but that started to change as cheap oil imports and the raw material behind synthetic rubber, made reclaimed rubber less valuable, and the spread of steel belted tires made tire recycling more expensive, difficult and time-consuming. Large volumes of discarded tires waste landfill space. One of the solutions to reduce this number is to process the discarded tires into small pieces to use in asphalt composition production.
Used automobile tires can be mechanically shredded by different kind of machines and processes known in the prior art. = = = '' In 2010, a minimum of 217 million kilograms of postconsumer, including post commercial, plastic material was collected for recycling in Canada. According to Environment and Plastics Industry Council report recycling initiatives to convert used plastics into new, useful products have increased tremendously over the past few years. The number of plastics recycling plants in Canada has grown from fewer than ten in 1988 to more than 80 today, and over a third of these plants now process post-consumer material. Since the plastic recycling industry, the recycling process is still considered to be expensive. Other suggested ways of recovering of plastics are reuse and landfill retentions.
It is known from the prior art the use of crumb or shredded rubber made from old automobile tires in an asphalt composition. It is also known paving blocks formed of rubberized asphalt.
Japanese Patent Publication 57-66206 published Apr. 22, 1982 discloses a method of manufacturing asphalt by using a hot asphalt mixture combined with a pasty rubber composition. The rubber composition consists of a 2:1 to 1:3 mixture of a rubber latex and powdery polyolefinic polymer, having a melt index of 20 to 400 and a grain size of 0.3 mm. or less.
U.S. Pat. No. 5,367.007 issued on November 22, 1994 to Denis discloses a two layer paving block, with the bottom layer comprising reclaimed asphalt, plastic material such as polyethylene, and an elastomeric material all forming a first composite material having normal structural characteristics required of paving blocks, and with the top layer having polyethylene and aggregate material, having different characteristics than the first composite material that forms the bottom layer.
WO 93/14156 publication discloses a rubber modified asphalt for use as a paving compound which is formed by reacting very fine ground particulate rubber with paving grade asphalt and mixing the combination at between 300 and 400 degrees F. The resulting mixture reacts fully within 25 minutes or less to form a freely pouring mixture; the reacted mixture can be held at normal asphalt working temperatures for at least 96 hours without degradation.
U.S. Pat. No. 5,221,702 issued on June 22,1993 to Richards discloses a composite paving block formed from desired proportions of asphalt, plastic such as polyethylene or phenolic resin, elastomeric material such as rubber or polyvinylchloride, and fibre material such as nylon or rayon.
Recycled or reclaimed materials such as reclaimed asphalt, recycled polyethylene bottles, and recycled tires may be used. The materials are heated and blended together into a relatively uniform mixture of composite material and then molded into individual paving blocks.
In the prior art, it is not disclosed a composite block comprising reclaimed asphalt as an aggregate, industrial and non-industrial waste plastics, and recycled rubber or scrap tire rubber to form paving blocks. It is also not disclosed molded blocks formed of the composition claimed with certain void content. Further, it is not disclosed the use different size of shredded rubber in the process of the making the mix. It is also, it is not disclosed the method of making the mix where different size fractions of rubber are used. It is also not disclosed the use of shredded used automobile tires without removing cords out of the rubber.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a paving block formed of recycled materials such as reclaimed asphalt, industrial and residential waste plastics and shredded tires.
RUBBER ASPHALT COMPOSITE BLOCK
Industry Industne A/M/J
.... YAND
Canada Canada FIELD OF THE INVENTION
This invention relates to rubber asphalt composite paving block used to construct roadways, driveways, parking lots and the like.
BACKGROUND OF THE INVENTION
In the United States approximately one tire is discarded per person each year.
The U.S.
Environmental Protection Agency estimates that 250 million scrap tires are generated in the United States each year, not counting another 45 million scrap tires that are used to make 34.5 million automobile and truck tire retreads every year. Until the 1960s, rubber from scrap tires was recycled, but that started to change as cheap oil imports and the raw material behind synthetic rubber, made reclaimed rubber less valuable, and the spread of steel belted tires made tire recycling more expensive, difficult and time-consuming. Large volumes of discarded tires waste landfill space. One of the solutions to reduce this number is to process the discarded tires into small pieces to use in asphalt composition production.
Used automobile tires can be mechanically shredded by different kind of machines and processes known in the prior art. = = = '' In 2010, a minimum of 217 million kilograms of postconsumer, including post commercial, plastic material was collected for recycling in Canada. According to Environment and Plastics Industry Council report recycling initiatives to convert used plastics into new, useful products have increased tremendously over the past few years. The number of plastics recycling plants in Canada has grown from fewer than ten in 1988 to more than 80 today, and over a third of these plants now process post-consumer material. Since the plastic recycling industry, the recycling process is still considered to be expensive. Other suggested ways of recovering of plastics are reuse and landfill retentions.
It is known from the prior art the use of crumb or shredded rubber made from old automobile tires in an asphalt composition. It is also known paving blocks formed of rubberized asphalt.
Japanese Patent Publication 57-66206 published Apr. 22, 1982 discloses a method of manufacturing asphalt by using a hot asphalt mixture combined with a pasty rubber composition. The rubber composition consists of a 2:1 to 1:3 mixture of a rubber latex and powdery polyolefinic polymer, having a melt index of 20 to 400 and a grain size of 0.3 mm. or less.
U.S. Pat. No. 5,367.007 issued on November 22, 1994 to Denis discloses a two layer paving block, with the bottom layer comprising reclaimed asphalt, plastic material such as polyethylene, and an elastomeric material all forming a first composite material having normal structural characteristics required of paving blocks, and with the top layer having polyethylene and aggregate material, having different characteristics than the first composite material that forms the bottom layer.
WO 93/14156 publication discloses a rubber modified asphalt for use as a paving compound which is formed by reacting very fine ground particulate rubber with paving grade asphalt and mixing the combination at between 300 and 400 degrees F. The resulting mixture reacts fully within 25 minutes or less to form a freely pouring mixture; the reacted mixture can be held at normal asphalt working temperatures for at least 96 hours without degradation.
U.S. Pat. No. 5,221,702 issued on June 22,1993 to Richards discloses a composite paving block formed from desired proportions of asphalt, plastic such as polyethylene or phenolic resin, elastomeric material such as rubber or polyvinylchloride, and fibre material such as nylon or rayon.
Recycled or reclaimed materials such as reclaimed asphalt, recycled polyethylene bottles, and recycled tires may be used. The materials are heated and blended together into a relatively uniform mixture of composite material and then molded into individual paving blocks.
In the prior art, it is not disclosed a composite block comprising reclaimed asphalt as an aggregate, industrial and non-industrial waste plastics, and recycled rubber or scrap tire rubber to form paving blocks. It is also not disclosed molded blocks formed of the composition claimed with certain void content. Further, it is not disclosed the use different size of shredded rubber in the process of the making the mix. It is also, it is not disclosed the method of making the mix where different size fractions of rubber are used. It is also not disclosed the use of shredded used automobile tires without removing cords out of the rubber.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a paving block formed of recycled materials such as reclaimed asphalt, industrial and residential waste plastics and shredded tires.
=
It is another object to provide a method of making a paving block from completely recycling materials such as reclaimed asphalt, industrial and residential waste plastics and crumb rubber. The crumb rubber is shredded and grounded automobile tires.
The block can be used in paving drive ways;roads, terminal ways and the like.
The claimed molded block has, preferably, the rectangular form. Alternatively, the block can be molded in any different geometrical shapes such as round, triangle, pentagon, hexagon and the like.
The paving block is approximately 35% to 40% by volume reclaimed crushed asphalt, approximately 5% to 7% by volume industrial waste plastic, approximately 5% to 7% by volume residential waste plastic, and approximately 45% to 55% crumb rubber. The proportions of the materials that make up the composite material must of course add up to 100%.
There is also provided a method of manufacturing a paving block. The method comprises the steps of:
selecting and combining the desired quantity of each asphalt fractions;
selecting the desired quantity of each rubberiractions and combining with desired quantity of industrial and non-industrial waste plastics;
preliminary heating the desired quantity of crushed asphalt fractions separately to approximately 275 F;
mixing the heated asphalt aggregates in an oven at a temperature between 375 F
and 425 F for at least 12 hours;
mixing the heated asphalt aggregates with selected combination of crumb rubber and plastic and placing the mixture in an oven at a temperature between 375 F and 425 F for approximately 45 minutes;
cooling the mixed material for at least 10 minutes before injecting it into the frames;
subsequent cooling the molded mix to approximately 210 F to obtain the desired 2% to 3% void content after the compaction.
The desired gradation and quantity of asphalt aggregate and the desired gradation and quantity of the rubber are given in the Table below.
It is another object to provide a method of making a paving block from completely recycling materials such as reclaimed asphalt, industrial and residential waste plastics and crumb rubber. The crumb rubber is shredded and grounded automobile tires.
The block can be used in paving drive ways;roads, terminal ways and the like.
The claimed molded block has, preferably, the rectangular form. Alternatively, the block can be molded in any different geometrical shapes such as round, triangle, pentagon, hexagon and the like.
The paving block is approximately 35% to 40% by volume reclaimed crushed asphalt, approximately 5% to 7% by volume industrial waste plastic, approximately 5% to 7% by volume residential waste plastic, and approximately 45% to 55% crumb rubber. The proportions of the materials that make up the composite material must of course add up to 100%.
There is also provided a method of manufacturing a paving block. The method comprises the steps of:
selecting and combining the desired quantity of each asphalt fractions;
selecting the desired quantity of each rubberiractions and combining with desired quantity of industrial and non-industrial waste plastics;
preliminary heating the desired quantity of crushed asphalt fractions separately to approximately 275 F;
mixing the heated asphalt aggregates in an oven at a temperature between 375 F
and 425 F for at least 12 hours;
mixing the heated asphalt aggregates with selected combination of crumb rubber and plastic and placing the mixture in an oven at a temperature between 375 F and 425 F for approximately 45 minutes;
cooling the mixed material for at least 10 minutes before injecting it into the frames;
subsequent cooling the molded mix to approximately 210 F to obtain the desired 2% to 3% void content after the compaction.
The desired gradation and quantity of asphalt aggregate and the desired gradation and quantity of the rubber are given in the Table below.
Table Percentage ofAsphalt Sieve Opening Rubber each Aggregate gradation Size mm in % amount % amount 11/2 37.5 1.5 1 5 3/4 19 0.75 5 5 coarse (min 1/2 12.5 30%) 3/8 9.5 0.375 5 5 - 0.312 5 5 No. 3Y2 5.66 0.233 5 No. 4 4.76 0.187 5 Medium No. 8 2.38 0.0937 10 10 (min 30%) No. 18 1 0.0394 10 10 No. 50 0.297 0.0117 10 15 No.100 0.149 0.0059 10 10 Fine (min No. 140 0.105 0.0041 13 10 30%) No. 200 0.074 0.0029 10 10 DETAILED DESCRIPTIONS OF THE PREFERRED EMBODIMENTS AND PROCESSES
The asphalt is preferably reclaimed asphalt from roads or parking lots which has been crushed and subsequently sieved. The Table given provides with preferred sizes of asphalt particles, the approximate amount of each gradation in the asphalt mix and the approximate percentage of each gradation in the asphalt rubber mix.
The rubber is recycled rubber and, preferably, is scrap tire rubber. The tire is shredded and crushed with wires inside and subsequently sieved. Three gradations of rubber are included in the mix for forming blocks: Fine, Medium and Coarse. All three types of rubber grading have to be included in the mix at sufficient amount according to the Table. The mixture with more fine rubber has the highest modulus and lowest fatigue while the mixture with coarse rubber has the lowest modulus and highest fatigue life.
Industrial waste plastic, another component of the mix, is plastic materials which did not meet requirement and specification for their intended applications and, therefore, they are called waste.
This type of plastic comes from different industry, such as agriculture, electronics, automotive and transportation, commercial packaging, construction and demolition etc., and may include over-wintering greenhouse plastic film, automotive plastic parts, vinyl siding from residential demolition etc.
Residential waste plastic is the combined waste scrap material which mostly comes from blue boxes and may include polystyrene, plastic shopping bags, bottles, plastic tubs and lids and etc.
The industrial and residential plastics are preliminary grounded in grinding machines and washed before mixing with the rubber.
The following steps are used to prepare the rubber asphalt mix to form the claimed block.
The asphalt aggregate fractions for the selected gradation and desired quantity are combined. To ensure hot and dry asphalt aggregate mix, it is placed in an oven at a temperature between 375 F to 425 F for at least 12 hours. The rubber fractions and industrial and non-industrial plastic wastes are combined to desired gradation and weight. The heated asphalt aggregate is subsequently mixed with combination of crumb rubber and plastic and placed in an oven at a temperature between 375 F to 425 F for approximately 45 minutes. The mix is cooled down for approximately 10 minutes and then it is weight and placed in the frames.
The mix is further cooled at room temperature until it reaches the desired compaction temperature which is approximately 210 F, and it is compacted in the frames to have 2% to 3% of air void content in the fotmed blocks. The itsilienntibdUlus of the blocks with 4% or more air void are lower, therefore, they are not stable because of plastic deformation.
The frames can be in different shapes for different project. Preferably, shapes have rectangular form. Alternatively, the frames can be in any different geometrical shapes such as round, triangle, pentagon, hexagon and the like.
The mixing temperature is a temperature between 375 F to 425 F. At temperatures below 375 F the rubber fraction will not melt enough to make the mix homogeneous. At temperatures above 425 F
the mix begins to burn. Moreover, at higher temperatures the chance of the fatigue experience is higher.
The claimed asphalt rubber block has the following advantages:
-= Less likely to crack in cold weather = = Resists rutting = = =
= Offers better traction = Reduces road noises = Easier maintenance = Easier de-icing control for winter maintenance = High skid resistance result of the surface texture and improved skid resistance during dry, wet, and icy conditions.
The asphalt is preferably reclaimed asphalt from roads or parking lots which has been crushed and subsequently sieved. The Table given provides with preferred sizes of asphalt particles, the approximate amount of each gradation in the asphalt mix and the approximate percentage of each gradation in the asphalt rubber mix.
The rubber is recycled rubber and, preferably, is scrap tire rubber. The tire is shredded and crushed with wires inside and subsequently sieved. Three gradations of rubber are included in the mix for forming blocks: Fine, Medium and Coarse. All three types of rubber grading have to be included in the mix at sufficient amount according to the Table. The mixture with more fine rubber has the highest modulus and lowest fatigue while the mixture with coarse rubber has the lowest modulus and highest fatigue life.
Industrial waste plastic, another component of the mix, is plastic materials which did not meet requirement and specification for their intended applications and, therefore, they are called waste.
This type of plastic comes from different industry, such as agriculture, electronics, automotive and transportation, commercial packaging, construction and demolition etc., and may include over-wintering greenhouse plastic film, automotive plastic parts, vinyl siding from residential demolition etc.
Residential waste plastic is the combined waste scrap material which mostly comes from blue boxes and may include polystyrene, plastic shopping bags, bottles, plastic tubs and lids and etc.
The industrial and residential plastics are preliminary grounded in grinding machines and washed before mixing with the rubber.
The following steps are used to prepare the rubber asphalt mix to form the claimed block.
The asphalt aggregate fractions for the selected gradation and desired quantity are combined. To ensure hot and dry asphalt aggregate mix, it is placed in an oven at a temperature between 375 F to 425 F for at least 12 hours. The rubber fractions and industrial and non-industrial plastic wastes are combined to desired gradation and weight. The heated asphalt aggregate is subsequently mixed with combination of crumb rubber and plastic and placed in an oven at a temperature between 375 F to 425 F for approximately 45 minutes. The mix is cooled down for approximately 10 minutes and then it is weight and placed in the frames.
The mix is further cooled at room temperature until it reaches the desired compaction temperature which is approximately 210 F, and it is compacted in the frames to have 2% to 3% of air void content in the fotmed blocks. The itsilienntibdUlus of the blocks with 4% or more air void are lower, therefore, they are not stable because of plastic deformation.
The frames can be in different shapes for different project. Preferably, shapes have rectangular form. Alternatively, the frames can be in any different geometrical shapes such as round, triangle, pentagon, hexagon and the like.
The mixing temperature is a temperature between 375 F to 425 F. At temperatures below 375 F the rubber fraction will not melt enough to make the mix homogeneous. At temperatures above 425 F
the mix begins to burn. Moreover, at higher temperatures the chance of the fatigue experience is higher.
The claimed asphalt rubber block has the following advantages:
-= Less likely to crack in cold weather = = Resists rutting = = =
= Offers better traction = Reduces road noises = Easier maintenance = Easier de-icing control for winter maintenance = High skid resistance result of the surface texture and improved skid resistance during dry, wet, and icy conditions.
Claims (12)
1. A molded composite paving block for use in paving roads, parking lots and driveways, comprising:
reclaimed asphalt aggregate in a proportion of approximately 35% to 40% by volume, industrial waste plastic approximately 5% to 7% by volume, residential waste plastic approximately 5% to 7 % by volume and approximately 45% to 55% crumb rubber by volume.
reclaimed asphalt aggregate in a proportion of approximately 35% to 40% by volume, industrial waste plastic approximately 5% to 7% by volume, residential waste plastic approximately 5% to 7 % by volume and approximately 45% to 55% crumb rubber by volume.
2. The paving block of claim 1, wherein said crumb rubber is reclaimed rubber from scrap tires.
3. The paving block of claim 1, wherein the asphalt aggregate is a mix of asphalt particles of different gradation.
4. The paving block of claim 1 and 3, wherein the asphalt particles sizes are not less than 0.0029" and not more than 1.5".
5. The paving block of claim 1 and 5, wherein the sizes and quantities of each asphalt gradation in the asphalt aggregate are selected according to the Table.
6.The paving block of claim 1, wherein the crumb rubber is shredded and grounded scrap tires.
7. The paving block of claim 1 and 6, wherein crumb rubber is shredded and grounded scrap tires with cords.
8. The paving block of claim 1, wherein the crumb rubber is not less than 0.0029" crumb rubber.
9. The paving block of claim 1, wherein the crumb rubber is not more than 1.5"
crumb rubber.
crumb rubber.
10. The paving block of claim 1, 8 and 9, wherein the sizes and quantities of each crumb rubber gradation in the rubber mix are selected according to the Table.
11. The paving block of claim 1, wherein the block has 2% to 3% of void content.
12. A method of manufacturing of molded composite block, comprising the steps of :
selecting and combining the desired quantity of each asphalt fractions;
selecting the desired quantity of each rubber fractions and combining with desired quantity of industrial and residential waste plastics;
preliminary heating the desired quantity of crushed asphalt fractions separately to approximately 275°F;
mixing the heated asphalt aggregates in an oven at a temperature between 375°F and 425°F for at least 12 hours;
mixing the heated asphalt aggregates with selected combination of crumb rubber and plastic and placing the mixture in an oven at a temperature between 375°F and 425°F for approximately 45 minutes;
cooling the mixed material for at least 10 minutes before injecting it into the frames;
subsequent cooling the molded mix to approximately 210°F to obtain the desired 2% to 3% void content after the compaction.
selecting and combining the desired quantity of each asphalt fractions;
selecting the desired quantity of each rubber fractions and combining with desired quantity of industrial and residential waste plastics;
preliminary heating the desired quantity of crushed asphalt fractions separately to approximately 275°F;
mixing the heated asphalt aggregates in an oven at a temperature between 375°F and 425°F for at least 12 hours;
mixing the heated asphalt aggregates with selected combination of crumb rubber and plastic and placing the mixture in an oven at a temperature between 375°F and 425°F for approximately 45 minutes;
cooling the mixed material for at least 10 minutes before injecting it into the frames;
subsequent cooling the molded mix to approximately 210°F to obtain the desired 2% to 3% void content after the compaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2800435 CA2800435A1 (en) | 2012-12-19 | 2012-12-19 | Rubber asphalt composite block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2800435 CA2800435A1 (en) | 2012-12-19 | 2012-12-19 | Rubber asphalt composite block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2800435A1 true CA2800435A1 (en) | 2014-06-19 |
Family
ID=50972875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2800435 Abandoned CA2800435A1 (en) | 2012-12-19 | 2012-12-19 | Rubber asphalt composite block |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2800435A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017199013A1 (en) * | 2016-05-18 | 2017-11-23 | Mccartney Toby Jon | A method of producing a road making material and to a road made therefrom |
| WO2018213402A1 (en) * | 2017-05-16 | 2018-11-22 | The Shredded Tire, Inc. | Environmentally responsible insulating construction blocks and structures |
| WO2019092254A1 (en) * | 2017-11-13 | 2019-05-16 | MacRebur Limited | A road making material, a method of producing a road making material and a road made therefrom |
| US10435887B2 (en) | 2015-11-17 | 2019-10-08 | The Shredded Tire, Inc. | Environmentally responsible insulating construction blocks and structures |
| US11932766B2 (en) | 2021-03-30 | 2024-03-19 | Saudi Arabian Oil Company | Asphalt modification with recycled plastic and crumb rubber for paving, roofing, waterproofing and damp proofing |
-
2012
- 2012-12-19 CA CA 2800435 patent/CA2800435A1/en not_active Abandoned
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10435887B2 (en) | 2015-11-17 | 2019-10-08 | The Shredded Tire, Inc. | Environmentally responsible insulating construction blocks and structures |
| WO2017199013A1 (en) * | 2016-05-18 | 2017-11-23 | Mccartney Toby Jon | A method of producing a road making material and to a road made therefrom |
| WO2018213402A1 (en) * | 2017-05-16 | 2018-11-22 | The Shredded Tire, Inc. | Environmentally responsible insulating construction blocks and structures |
| WO2019092254A1 (en) * | 2017-11-13 | 2019-05-16 | MacRebur Limited | A road making material, a method of producing a road making material and a road made therefrom |
| US11299632B2 (en) | 2017-11-13 | 2022-04-12 | MacRebur Limited | Road making material, a method of producing a road making material and a road made therefrom |
| US11932766B2 (en) | 2021-03-30 | 2024-03-19 | Saudi Arabian Oil Company | Asphalt modification with recycled plastic and crumb rubber for paving, roofing, waterproofing and damp proofing |
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Effective date: 20181219 |