WO1995014819A2 - Process for producing a two-layered asphalt covering - Google Patents
Process for producing a two-layered asphalt covering Download PDFInfo
- Publication number
- WO1995014819A2 WO1995014819A2 PCT/DE1994/001404 DE9401404W WO9514819A2 WO 1995014819 A2 WO1995014819 A2 WO 1995014819A2 DE 9401404 W DE9401404 W DE 9401404W WO 9514819 A2 WO9514819 A2 WO 9514819A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- asphalt
- binder
- layers
- layer
- producing
- Prior art date
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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
Definitions
- the invention relates to a method for producing a two-layer asphalt surface with which the properties of the asphalt layers are optimized.
- asphalt pavements are produced from several layers using different types of mix.
- the mix is installed in layers or - if the same mix types are processed - in layers one above the other.
- bitumen emulsions are sprayed onto the cold surface.
- Asphalt pavements are used on roads and other traffic areas.
- the overall strength of the structure and that of the individual layers depends primarily on the loads that occur.
- the asphalt pavements consist of a top, binder and base course. Different requirements are imposed on the individual layers.
- the main requirements for the top layer are:
- binder layers must primarily be stable.
- the asphalt base layer serves for the harmless absorption and dissipation of the occurring tensions in the areas below. They must also be assembled in a stable manner.
- Binder and base layers are protected by the cover layer and therefore have no sealing functions.
- cover layers are installed with a thickness of 4 cm.
- the nominal thicknesses of the binder and asphalt base courses vary depending on the construction class in accordance with applicable building regulations, such as RStO 86/89. / Arand and others: Investigation of the effectiveness of high-performance compaction screeds by field measurements on current ones Construction sites, road and highways, Bonn 41 (1990) No. 5 pp. 215 - 219.
- the cover and partly also the binder up to the base layers are involved in the damage due to deformation.
- the causes lie mainly in the material composition and the compression.
- top layers represent a particular problem, especially since the multitude of tasks require very different conceptual decisions.
- the single-layer asphalt paving customary in the prior art in which the next layer is installed on a cold or already largely cooled base, causes constraints and quality defects, particularly in the case of the relatively thin cover and binder layers.
- it is known to produce two-layer asphalt coverings by heating the existing, usually defective asphalt, and distributing it on the construction site or mixing it with other asphalt components. Due to the relatively low thermal conductivity of the asphalt, the bitumen is subjected to very different temperatures when it is heated.
- the quality of the components distributed or mixed on the road is subject to greater fluctuations compared to the asphalt produced by the mixing process on an asphalt plant, since the ratio of old and new components is less accurate and the compositions often have different compositions .
- the invention is based on the object of specifying a method for producing a two-layer asphalt covering from two ready-to-deliver mix types, with which the total paving thickness is increased considerably and the layer thickness ratio, the composition and thus properties are optimized.
- the optimization relates in particular to the degree of compression without increasing the compression energy.
- this object is achieved in that the upper layers of the asphalt pavement are installed in one step in hot paving and the layer thickness ratio is changed among one another.
- This relates to the simultaneous installation of asphalt binder plus top layer and, in the case of less frequented roads, asphalt base plus top layer and the combination of asphalt base layer and asphalt binder.
- the direct hot-on-hot laying ensures an optimal bond between the layers.
- the deformation behavior associated with lateral deflection (sliding) is thus improved.
- the simultaneous installation in two layers allows the asphalt formulations to be changed to more stable and mixtures, since the level of compaction in both layers of the asphalt is increased considerably and the void content can thus be reduced at the same time.
- a high storage density can only be achieved with sufficient installation thicknesses. In general, this requires a ratio of layer thickness to large grain of approx. 3: 1 in the traditional construction. This results e.g. the paving thickness of 4 cm for asphalt concrete 0/11 mm.
- FIG. 1 shows the dependence of the compression time on the layer thickness
- Figure 2 shows the influence of the temperature of the mixed material on the density (RG) or the degree of compaction (VD).
- 10 cm asphalt base course Type CS 0/32 mm and 4 cm asphalt binder 0/16 mm are installed at the same time.
- the compaction time is considerably extended and the level of compaction levels is increased on both layers. This leads to a significant increase in the resistance to deformation on both layers and there are no substance losses on the asphalt binder, as can often be found hot to cold in the installation customary in the prior art.
- the stone mastic 0/11 mm can be compacted much more effectively than 4 cm on a cold surface.
- the entire ceiling becomes considerably more stable while maintaining the other functions of the top layer.
- the asphalt binder has a higher storage density and is therefore more resistant to deformation.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Revetment (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59405545T DE59405545D1 (en) | 1993-11-27 | 1994-11-23 | METHOD FOR PRODUCING A TWO-LAYER ASPHALT COVERING |
EP95902030A EP0730693B1 (en) | 1993-11-27 | 1994-11-23 | Process for producing a two-layered asphalt covering |
PL94314612A PL176324B1 (en) | 1993-11-27 | 1994-11-23 | Method of producing two-layer asphalt coating |
RU96115271A RU2124604C1 (en) | 1993-11-27 | 1994-11-23 | Method for constructing dual-course asphaltic pavement |
US08/656,255 US6033147A (en) | 1993-11-27 | 1994-11-23 | Method for producing a two-layer asphaltic surfacing |
DK95902030T DK0730693T3 (en) | 1993-11-27 | 1994-11-23 | Process for preparing a two-layer asphalt coating |
JP7514753A JPH09505369A (en) | 1993-11-27 | 1994-11-23 | Method for manufacturing 2-layer asphalt surface layer |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4340421.9 | 1993-11-27 | ||
DE4340421 | 1993-11-27 | ||
DE4342999A DE4342999A1 (en) | 1993-11-27 | 1993-12-16 | Process for producing a two-layer asphalt surface |
DEP4342999.8 | 1993-12-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1995014819A2 true WO1995014819A2 (en) | 1995-06-01 |
WO1995014819A3 WO1995014819A3 (en) | 2001-12-20 |
Family
ID=25931572
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1994/001404 WO1995014819A2 (en) | 1993-11-27 | 1994-11-23 | Process for producing a two-layered asphalt covering |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0730693B1 (en) |
JP (1) | JPH09505369A (en) |
CN (1) | CN1052280C (en) |
AT (1) | ATE164408T1 (en) |
DK (1) | DK0730693T3 (en) |
ES (1) | ES2117386T3 (en) |
PL (1) | PL176324B1 (en) |
WO (1) | WO1995014819A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006040896B4 (en) * | 2006-08-31 | 2015-04-02 | Friedemann Hoppe | Process for the rehabilitation of a roadway for air and road vehicles |
CN104480824A (en) * | 2014-12-12 | 2015-04-01 | 西安盛祥公路工程有限公司 | Asphalt pavement and one-time forming process thereof. |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2416338A1 (en) * | 1973-12-14 | 1975-06-19 | Beugnet Soc Nouv Entreprises | ROAD PAVING AND METHOD OF ITS MANUFACTURING |
AU464167B2 (en) * | 1972-05-25 | 1975-08-21 | Gunnar Ohlson Karl | A method for the production of plant-mixed asphalt concrete |
US4007995A (en) * | 1974-07-16 | 1977-02-15 | Huiles Goudrons Et Derives | Method of providing a surface dressing for a roadway |
-
1994
- 1994-11-23 JP JP7514753A patent/JPH09505369A/en active Pending
- 1994-11-23 ES ES95902030T patent/ES2117386T3/en not_active Expired - Lifetime
- 1994-11-23 AT AT95902030T patent/ATE164408T1/en not_active IP Right Cessation
- 1994-11-23 EP EP95902030A patent/EP0730693B1/en not_active Revoked
- 1994-11-23 PL PL94314612A patent/PL176324B1/en unknown
- 1994-11-23 DK DK95902030T patent/DK0730693T3/en active
- 1994-11-23 WO PCT/DE1994/001404 patent/WO1995014819A2/en not_active Application Discontinuation
- 1994-11-23 CN CN94194616.9A patent/CN1052280C/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU464167B2 (en) * | 1972-05-25 | 1975-08-21 | Gunnar Ohlson Karl | A method for the production of plant-mixed asphalt concrete |
DE2416338A1 (en) * | 1973-12-14 | 1975-06-19 | Beugnet Soc Nouv Entreprises | ROAD PAVING AND METHOD OF ITS MANUFACTURING |
US4007995A (en) * | 1974-07-16 | 1977-02-15 | Huiles Goudrons Et Derives | Method of providing a surface dressing for a roadway |
Also Published As
Publication number | Publication date |
---|---|
JPH09505369A (en) | 1997-05-27 |
CN1139469A (en) | 1997-01-01 |
ES2117386T3 (en) | 1998-08-01 |
PL314612A1 (en) | 1996-09-16 |
DK0730693T3 (en) | 1999-01-25 |
EP0730693A1 (en) | 1996-09-11 |
CN1052280C (en) | 2000-05-10 |
WO1995014819A3 (en) | 2001-12-20 |
EP0730693B1 (en) | 1998-03-25 |
ATE164408T1 (en) | 1998-04-15 |
PL176324B1 (en) | 1999-05-31 |
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