Bitumen base composition for producing bitumen comprising a plastics liquefaction oil
AssigneeTotalenergies Onetech
InventorsCarine BOULANGER, Mersaka BENKHALED, Alexandrine CHOFFAT
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Abstract
A bitumen base composition having at least from 95 to 99% by weight at least one bitumen base having a penetrability at 25° C. of less than or equal to 220·10−1 mm and a softening point higher than or equal to 35° C., and from 1 to 5% by weight at least one plastic liquefaction oil the initial boiling point of which is at least 300° C. measured in accordance with D7169:20. The bitumen base composition makes it possible to reprocess a heavy plastic liquefaction oil cut for use in a road bitumen.
Claims15
A method for preparing a composition of bitumen bases wherein the following are mixed:
- a. from 95 to 99% by weight of at least one bitumen base conforming to the specifications of NF EN 12591:2009 and having a penetrability at 25° C. measured in accordance with EN 1426:2018 of less than or equal to 220·10−1 mm and a softening point measured in accordance with EN 1427:2018 higher than or equal to 35° C.,
- b. from 1 to 5% by weight at least one plastic pyrolysis oil the initial boiling point of which is at least 300° C. measured in accordance with D7169:20,
- and a composition of bitumen bases is obtained wherein the variation in the softening point is less than the variation in the softening point of component a) following aging in accordance with the RTFOT test of NF EN 12607-1 [2014].
A method of making road bitumen comprising incorporating a plastic liquefaction oil having an initial boiling point of at least 300° C. measured in accordance with D7169:20 as a component for the road bitumen for reducing the variation in the softening point of a bitumen base conforming to the specifications of NF EN 12591:2009 and aged in accordance with the RTFOT test of EN 12607-1 [2014].
Dependencies are inferred from the claim text.