Bitumen or asphalt for producing a road topping, road topping and method for the production of bitumen or asphalt
AssigneeSchümann Sasol GmbH & Co. KG
InventorsGünter Hildebrand, Ferdinand Richter, Michael Matthäi, Bruno Iversen, Klaus-Werner Damm
Life of this patent
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Abstract
The invention relates to bitumen or asphalt for producing a road topping, whereby said bitumen or asphalt contains a proportion of paraffin obtained by Fischer-Tropsch synthesis (FT paraffin). The invention also relates to a road topping with said bitumen and to a method for producing a corresponding road topping or roadway/covering using said bitumen.
Claims13
Road surface comprising a lower sand/gravel layer, a bituminous sub-base over the sand/gravel layer, and an upper asphalt/concrete layer or pavement, wherein bitumen of the bituminous sub-base and the pavement has a content of paraffin obtained by Fischer-Tropsch synthesis.
Road surface comprising a lower sand/gravel layer, a bituminous sub-base over the sand/gravel layer, and an upper asphalt/concrete layer or pavement, wherein bitumen of the bituminous sub-base has a content of paraffin obtained by Fischer-Tropsch synthesis;
- and the pavement is a layer having a content of paraffin obtained by a Fischer-Tropsch synthesis.
Method for the production of a road surface, comprising the steps of, in order to form a bituminous sub-base and a pavement upon the sub-base in roadbuilding, admixing an asphalt-containing bitumen with a paraffin obtained from a Fischer-Tropsch synthesis, the paraffin obtained by a Fischer-Tropsch synthesis having a content in the sub-base from 0.5 to 10%, and from 0.5 to 5.0% in the pavement, based on the bitumen content.
Method for the production of a road surface, comprising the steps of, in order to form a bituminous sub-base in roadbuilding, admixing an asphalt-containing bitumen with a paraffin obtained from a Fischer-Tropsch synthesis, the paraffin obtained by a Fischer-Tropsch synthesis having a content from 0.5 to 10%, preferably from 2.5 to 7.5%, based on the bitumen content;
- and wherein in order to form a pavement layer in roadbuilding, an asphalt-containing bitumen is admixed with paraffin obtained by a Fischer-Tropsch synthesis in a proportion from 0.5 to 5% based on the bitumen content.
Method for the production of a road surface, comprising the steps of, in order to form a bituminous sub-base in roadbuilding, admixing an asphalt-containing bitumen with a paraffin obtained from a Fischer-Tropsch synthesis, the paraffin obtained by a Fischer-Tropsch synthesis having a content from 0.5 to 10%, preferably from 2.5 to 7.5%, based on the bitumen content;
- and further comprising the steps of providing a binder layer, wherein in order to form the binder layer, admixing an asphalt-containing bitumen with FT paraffin in a proportion from 0.5 to 5% based on the bitumen content.
Dependencies are inferred from the claim text.