Contaminant immobilisation in asphalt
OwnerRichard John STEWART, Michael THOMPSONinventors
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Abstract
A method for the stabilisation of contaminants within an asphalt raw material is disclosed. The method comprised mixing the asphalt raw material with an adsorbent under conditions to bind contaminants in the asphalt raw material and stabilise the contaminants under asphalt mixing conditions.
Claims21
A method for the stabilisation of contaminants within an asphalt raw material, the method comprising mixing the asphalt raw material with an adsorbent under conditions to bind contaminants in the asphalt raw material and stabilise the contaminants under asphalt mixing conditions.
Aggregate and/or bitumen obtained from used asphalt wherein the aggregate and/or bitumen has been treated with an adsorbent under conditions to bind any contaminants in the aggregate and/or bitumen.
(canceled)
A method of neutralising and reconstructing a contaminated asphalt surface, the method comprising:
- obtaining particles of asphalt raw material from the contaminated asphalt, mixing the asphalt raw material with an adsorbent under conditions to form an absorbent treated asphalt raw material that binds contaminants in the asphalt raw material and stabilises the contaminants under asphalt mixing conditions, mixing bitumen and, optionally, virgin aggregate with the adsorbent treated asphalt raw material to obtain an asphalt mix,
- overlaying the asphalt mix on the surface to obtain an asphalt surface.
Dependencies are inferred from the claim text.