Asphalt composition
OwnerSunil Ashtekar, Franciscus Gondulfus Anton Van Den Berg +3inventors
InventorsSunil Ashtekar, Franciscus Gondulfus Anton Van Den Berg, Majid Jamshed Chughtai, Marinus Johannes Reynhout, Govind Wagle
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Abstract
An asphalt composition comprising aggregate, bitumen, sulphur and an anionic surfactant is disclosed, wherein the amount of anionic surfactant is from 0.05 wt % to 10 wt %, based upon the weight of the sulphur. Methods of preparing asphalt compositions and asphalt pavements are also disclosed.
Claims20
An asphalt composition comprising aggregate, bitumen, sulphur and an anionic surfactant, wherein the amount of anionic surfactant is from 0.05 wt % to 10 wt %, based upon the weight of the sulphur.
Sulphur pellet comprising an anionic surfactant in an amount from 0.05 wt % to 10 wt %, based upon the weight of the sulphur.
A process for preparing an asphalt pavement, the process comprising the steps of:
- (i) heating bitumen;
- (ii) heating aggregate;
- (iii) mixing the hot bitumen with the hot aggregate in a mixing unit to form an asphalt composition;
- (iv) spreading the asphalt composition into a layer;
- and
- (v) compacting the layer;
- wherein sulphur is added in at least one of steps (i), (ii) or (iii);
- and wherein anionic surfactant is sprayed above the layer in steps (iv) and/or (v).
Dependencies are inferred from the claim text.