WO1999064517A1 - Composition and method for producing a road surface course - Google Patents
Composition and method for producing a road surface course Download PDFInfo
- Publication number
- WO1999064517A1 WO1999064517A1 PCT/FR1999/001335 FR9901335W WO9964517A1 WO 1999064517 A1 WO1999064517 A1 WO 1999064517A1 FR 9901335 W FR9901335 W FR 9901335W WO 9964517 A1 WO9964517 A1 WO 9964517A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gravel
- bitumen
- tread
- sand
- lacquered
- Prior art date
Links
Classifications
-
- 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
- C08L95/005—Aqueous compositions, e.g. emulsions
-
- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/02—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
- E01C19/10—Apparatus or plants for premixing or precoating aggregate or fillers with non-hydraulic binders, e.g. with bitumen, with resins, i.e. producing mixtures or coating aggregates otherwise than by penetrating or surface dressing; Apparatus for premixing non-hydraulic mixtures prior to placing or for reconditioning salvaged non-hydraulic compositions
- E01C19/1059—Controlling the operations; Devices solely for supplying or proportioning the ingredients
- E01C19/1068—Supplying or proportioning the ingredients
-
- 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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2495/00—Bituminous materials, e.g. asphalt, tar or pitch
Definitions
- the present invention relates to a composition and a method for producing a wearing course of a road as well as the corresponding wearing course. It has applications in the construction and maintenance industry of traffic pavements.
- a road surface layer must have a certain number of characteristics, in particular, it must ensure the tightness of the entire body of the roadway, the longitudinal and transverse uniformity, the flatness necessary for the stability of automobiles and a grip. sufficient for vehicle braking. As far as possible, it must also have a low noise level during tire / road contact. It is also desirable after its implementation by construction or during maintenance, that there is very little discharge of gravel in order to avoid breakage of the windshield.
- road surface layers having these characteristics are produced using hot mixes comprising aggregates bonded by bitumen.
- These aggregates are preferably 4/6 or 6/10 gravel, possibly associated with 0/2 sand, these numerical values correspond to the sizes of the aggregates.
- These mixes are used both in high traffic pavements and in low or moderate traffic pavements corresponding to approximately 5,000 vehicles per day or less.
- the economic and mechanical constraints are not the same as in the case of heavy traffic.
- the investment possibilities are often reduced for “small” roads compared to the main traffic axes.
- the wear and the stresses of the wearing course are reduced.
- due to the preferential use of 4/6 or 6/10 gravel in the treads aggregates of other sizes are often found to be downgraded or unsold and are therefore offered at reduced prices.
- the object of the invention is therefore to propose a composition for producing a tread for a roadway with low or moderate traffic which has the characteristics mentioned above while being cost-effective. reduced. However, it can also be used for roads with higher traffic but whose vehicles are less aggressive for the surface, for example bikes, motorcycles or light carts, etc. It can be used in high deflection pavements greater than 100/100 mm as well as in low deflection pavements.
- the invention consists of a composition of lacquered aggregates, said composition being subsequently used in the production of a tread.
- the aggregates are gravel 1/2 to 2/8 and preferably only 2/4 ” to
- the gravel is coated with a bituminous binder.
- bituminous binder is an emulsion of bitumen.
- the bitumen of the emulsion has a penetration of 30 to 300.
- the proportion of residual bitumen in the composition of lacquered aggregates is between 0.5% and 10% and preferably between 1% and 4%.
- composition of lacquered aggregates can be stored up to several months before its implementation.
- composition of lacquered aggregates can be used with the paver or possibly with a grader or self-propelled for asphalt, cold-cast or by any other application machine.
- the tread is intended for a road surface with low or moderate traffic corresponding to approximately 5,000 vehicles per day or less.
- the invention also consists of a method of producing a tread on a support in which the following steps are implemented:
- a bonding layer is optionally produced on the support depending on the state of the support
- composition of lacquered aggregates is spread directly on the support or via the possible bonding layer
- This invention can also have the following technical characteristics, taken individually or in any technically possible combination: - the aggregates are gravel 1/2 to 2/8 and preferably 2/4 to
- the gravel is coated with a bituminous binder.
- bituminous binder is an emulsion of bitumen.
- bitumen of the emulsion has a penetration of 30 to 300.
- lacquering is carried out cold. .
- the proportion of residual bitumen in the composition of lacquered aggregates is between 0.5% and 10% and preferably between 1% and 4%.
- the composition of lacquered aggregates can be stored up to several months before its implementation.
- composition of lacquered aggregates can be used with the paver or possibly with a grader or self-propelled for asphalt, cold-cast or by any other application machine.
- the tread is intended for a road surface with low or moderate traffic corresponding to approximately 5000 vehicles per day or less.
- the dosage of the composition of lacquered aggregates is between 10 and 180 kg / m 2 of tread and preferably between 30 and 60 kg / m 2 for a thickness between 10 and 100 mm.
- the sand is a sand 0/1 to 0/4 and preferably 0/2 to 0/4.
- the cleanliness of the sand can be limited to an equivalent of sand greater than or equal to 40.
- the dosage of sand is between 1 and 20 kg / m 2 of tread and preferably between 3 and 5 kg / m 2 .
- bitumen emulsion with rupture and controlled viscosity is dosed to obtain a residual dosage of bitumen between 100 and 5000 g / m 2 of tread and preferably between 400 and 1000 g / m 2 .
- the sand can be watered to help its migration between the voids in the composition of lacquered aggregates.
- the invention also consists of a tread, comprising:. - A composition of lacquered gravel deposited on a support directly or via a bonding layer, the lacquering of gravel being obtained by a bituminous binder in the form of a bitumen emulsion.
- the aggregates are gravel 1/2 to 2/8 and preferably 2/4 to 2/6.
- the gravel is coated with a bituminous binder.
- bituminous binder is an emulsion of bitumen.
- the bitumen of the emulsion has a penetration of 30 to 300.
- the proportion of residual bitumen in the composition of lacquered aggregates is between 0.5% and 10% and preferably between 1% and 4%.
- composition of lacquered aggregates can be stored up to several months before its implementation.
- composition of lacquered aggregates can be used with the paver or possibly with a grader or self-propelled for asphalt, cold-cast or by any other application machine.
- the dosage of the composition of lacquered aggregates is between 10 and 180 kg / m 2 of tread and preferably between 30 and
- the sand is a sand 0/1 to 0/4 and preferably 0/2 to 0/4.
- the cleanliness of the sand can be limited to an equivalent of sand greater than or equal to 40.
- the dosage of sand is between 1 and 20 kg / m 2 of tread and preferably between 3 and 5 kg / m 2 .
- bitumen emulsion with rupture and controlled viscosity is dosed to obtain a residual dosage of bitumen between 100 and 5000 g / m 2 of tread and preferably between 400 and 1000 g / m 2 .
- the sand can be watered to help its migration between the voids in the composition of lacquered aggregates.
- the roughness measured by the so-called “sand height” method on a tread gives a result between HSv 0.5 and 1 mm.
- the tread is intended for light or moderate traffic pavement corresponding to approximately 5,000 vehicles per day or less.
- the tread according to the invention includes all the criteria for the acceptance of wearing courses for roads with low and moderate traffic, the stiffness modulus of this complex is equal to or less than 3000 Mpa.
- the uniformity and the flatness are obtained by the implementation of the lacquered aggregates, the sealing and the roughness are obtained by the filling of voids and the sweeping of the sand, the cohesion of the whole prevents the rejection of gravel and a low noise level is obtained by using 2/4 to 2/6 gravel preferably. These characteristics are obtained at a reduced cost by using decommissioned or unsold quarry materials.
- a composition of lacquered aggregates is produced, 4/6 chippings are introduced into a device also receiving a bitumen emulsion.
- the emulsion is brought into contact with the gravel and agitation is ensured in order to distribute the emulsion uniformly over the gravel so that the coating is uniform.
- This lacquering is carried out cold.
- the composition of lacquered gravel is sent to a storage area. This storage can last from several days to several months. On the road construction site, support is required to stabilize the future tread.
- this support has a low attachment capacity to the composition of lacquered gravel
- a bonding layer must be produced on the support before spreading the composition of lacquered gravel.
- the lacquered gravel is transported from its storage area to the road construction site where it is spread on the support using a grader.
- lacquered gravel composition about 40 kg per m 2 of tread for an average thickness of 50 mm.
- a bitumen emulsion with rupture and viscosity controlled according to the outside temperature and the humidity as well as 0/2 quarry sand are spread on the layer of composition of lacquered gravel.
- sand is used at the rate of approximately 4 kg / m 2 of tread.
- the dosage of the bitumen emulsion will be chosen to obtain a residual bitumen rate of approximately 500 g / m 2 of tread.
- the assembly is then cylinder and a scan carried out.
- a tread made according to these characteristics is waterproof, measurements made at the site permeameter have given permeability values between 2 to 15 ⁇ 10 -4 .
- roughness measurements by the so-called “sand height” method have given results between HSv 0.5 and 1 mm.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Architecture (AREA)
- Road Paving Structures (AREA)
- Road Paving Machines (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU40463/99A AU4046399A (en) | 1998-06-08 | 1999-06-07 | Composition and method for producing a road surface course |
EP99923682A EP1027386A1 (en) | 1998-06-08 | 1999-06-07 | Composition and method for producing a road surface course |
JP2000553514A JP2002517644A (en) | 1998-06-08 | 1999-06-07 | Compositions and methods for forming a road surface |
SK144-2000A SK1442000A3 (en) | 1998-06-08 | 1999-06-07 | Composition and method for producing a road surface course |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR98/07184 | 1998-06-08 | ||
FR9807184A FR2779424B1 (en) | 1998-06-08 | 1998-06-08 | COMPOSITION AND METHOD FOR PRODUCING A LAYER OF A ROAD, CORRESPONDING LAYER |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999064517A1 true WO1999064517A1 (en) | 1999-12-16 |
Family
ID=9527138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/001335 WO1999064517A1 (en) | 1998-06-08 | 1999-06-07 | Composition and method for producing a road surface course |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1027386A1 (en) |
JP (1) | JP2002517644A (en) |
AU (1) | AU4046399A (en) |
FR (1) | FR2779424B1 (en) |
HU (1) | HUP0003814A3 (en) |
PL (1) | PL338446A1 (en) |
SK (1) | SK1442000A3 (en) |
WO (1) | WO1999064517A1 (en) |
ZA (1) | ZA200000522B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1138721A3 (en) * | 2000-04-01 | 2003-04-02 | Asphalt & Mineral Development Company Limited | Production of bituminous asphalt |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868263A (en) * | 1970-06-22 | 1975-02-25 | Kenneth E Mcconnaughay | Method of making a paving composition |
EP0552574A1 (en) * | 1992-01-24 | 1993-07-28 | Screg | Method of preparing coated materials for road surfaces by double coating |
WO1996017130A1 (en) * | 1994-11-28 | 1996-06-06 | Vejtek International A/S | A method of providing a road surface with an overlay |
WO1996041839A1 (en) * | 1995-06-09 | 1996-12-27 | Tarmac Heavy Building Materials Uk Limited | Bituminous coated materials |
-
1998
- 1998-06-08 FR FR9807184A patent/FR2779424B1/en not_active Expired - Fee Related
-
1999
- 1999-06-07 WO PCT/FR1999/001335 patent/WO1999064517A1/en not_active Application Discontinuation
- 1999-06-07 HU HU0003814A patent/HUP0003814A3/en unknown
- 1999-06-07 SK SK144-2000A patent/SK1442000A3/en unknown
- 1999-06-07 EP EP99923682A patent/EP1027386A1/en not_active Withdrawn
- 1999-06-07 JP JP2000553514A patent/JP2002517644A/en active Pending
- 1999-06-07 PL PL99338446A patent/PL338446A1/en unknown
- 1999-06-07 AU AU40463/99A patent/AU4046399A/en not_active Abandoned
-
2000
- 2000-02-04 ZA ZA200000522A patent/ZA200000522B/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868263A (en) * | 1970-06-22 | 1975-02-25 | Kenneth E Mcconnaughay | Method of making a paving composition |
EP0552574A1 (en) * | 1992-01-24 | 1993-07-28 | Screg | Method of preparing coated materials for road surfaces by double coating |
WO1996017130A1 (en) * | 1994-11-28 | 1996-06-06 | Vejtek International A/S | A method of providing a road surface with an overlay |
WO1996041839A1 (en) * | 1995-06-09 | 1996-12-27 | Tarmac Heavy Building Materials Uk Limited | Bituminous coated materials |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1138721A3 (en) * | 2000-04-01 | 2003-04-02 | Asphalt & Mineral Development Company Limited | Production of bituminous asphalt |
Also Published As
Publication number | Publication date |
---|---|
EP1027386A1 (en) | 2000-08-16 |
FR2779424A1 (en) | 1999-12-10 |
FR2779424B1 (en) | 2000-08-18 |
AU4046399A (en) | 1999-12-30 |
ZA200000522B (en) | 2001-03-06 |
HUP0003814A2 (en) | 2001-02-28 |
JP2002517644A (en) | 2002-06-18 |
SK1442000A3 (en) | 2000-08-14 |
HUP0003814A3 (en) | 2002-08-28 |
PL338446A1 (en) | 2000-11-06 |
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