Runway for aircraft and roadway for vehicles and method of renewing a runway or roadway
View Patent ↗The cover layer is applied as an asphalt cover layer ( 5, 5′, 5 ″) to avoid significant restrictions of the running traffic and for shortening the construction time. Also, this asphalt cover layer is arranged above the upper face (OK) of the runway or roadway in need of renewal and an asphalt base coarse layer ( 4, 4′, 4″, 4′″, 4″″, 4 ′″″) is disposed between the base layer ( 2, 2 ′) and the asphalt cover layer ( 5, 5′, 5 ″). A method subdivides the roadway or runway in the direction of travel into a primary lane ( 7 ) and at least one secondary lane ( 8, 9 ). First, the work subzones ( 10 ) to ( 14 ) of the primary lane ( 7 ) are processed and then the work effort is transferred to subzones ( 15 ) to ( 20 ) of the secondary lanes ( 8, 9 ) for processing. At least the frost-protective layer ( 1 ) remains in the earth and at least an asphalt base layer ( 4, 4′, 4″, 4′″, 4″″, 4 ′″″) and an asphalt cover layer ( 5, 5′, 5 ″) are applied thereon. The asphalt base layer ( 4, 4 ′) is applied to the level of the upper face (OK) for the old way and the asphalt cover layer ( 5, 5′, 5 ″) is applied above the level of the upper face (OK) of the old way.
1. A method for renewing a roadway for motor vehicles and a runway for aircraft, the way having an upper face (OK) before the renewal thereof and including a frost-protective layer, a base coarse layer and a cover layer, the method comprising the steps of:
demolishing and renewing one or more of said layer(s) no longer needed while leaving at least said frost-protective-layer in the earth;
applying at least one asphalt base layer onto said frost-protective layer and bringing said asphalt base layer up to the level of said upper face (OK);
measuring a load bearing capacity of said asphalt base layer in order to make a final determination of the thickness of an asphalt cover layer; and,
applying said asphalt cover layer onto said at least one asphalt base layer to a level above said upper face (OK) and to have a thickness corresponding to said thickness determined from said measurement of load bearing capacity.
2. A roadway for motor vehicles and a runway for aircraft produced in accordance with the method of claim 1 , the way having an upper face OK before a renewal of said way, is carried out, the way having been renewed and now comprising:
a frost-protective layer;
a base course disposed atop said frost-protective layer;
said frost-protective layer and said base course having been present before and after said way was renewed;
an asphalt cover layer disposed above said upper face OK;
an asphalt base layer interposed between said base course and said asphalt cover layer; and,
said asphalt cover layer and said asphalt base layer being present and part of said way after the renewal thereof.
3. The way of claim 2 , further comprising an asphalt binder layer interposed between said asphalt base layer and said asphalt cover layer.
4. The way of claim 3 , wherein said asphalt cover layer is below or above said upper face OK or extends above said upper face OK.
5. The method of claim 1 , wherein said base coarse layer is also left in the earth.
6. The method of claim 1 , wherein an asphalt binder layer is applied so as to be sandwiched between said asphalt base layer and said asphalt cover layer; and, said asphalt cover layer is applied so as to: (a) come up to the level of said upper face (OK); (b) start at the level of said upper face (OK); or, (c) start at a level above said upper face (OK).
7. The method of claim 6 , comprising the further step of compensating elevation differences between mutually adjacent renewed and nonrenewed subzones with flat ramps to accommodate traffic during times renewal work is not taking place.
8. The method of claim 1 , comprising the further step of processing the material of said base coarse layer to a hydraulically bonded base coarse layer to improve the load bearing capacity thereof.
9. A roadway for motor vehicles and a runway for aircraft, the way having an upper face OK before a renewal of said way is carried out, the way having been renewed and now comprising:
a frost-protective layer;
a base course disposed atop said frost-protective layer;
said frost-protective layer and said base course having been present before and after said way was renewed;
an asphalt cover layer disposed above said upper face OK;
an asphalt base layer interposed between said base course and said asphalt cover layer;
said asphalt base layer having a predetermined load bearing capacity measured after said asphalt base layer is applied to said base course to permit a determination of the thickness of said asphalt cover layer; and,
said asphalt cover layer and said asphalt base layer being present and part of said way after the renewal thereof with said asphalt cover layer having said thickness corresponding to said load bearing capacity.
10. The way of claim 9 , further comprising an asphalt binder layer interposed between said asphalt base layer and said asphalt cover layer.
11. The way of claim 10 , wherein said asphalt cover layer is below or above said upper face OK or extends above said upper face OK.