ASPHALT CONCRETE WITH MODIFIED OIL FLY ASH
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United States of America Patent
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Issued Date -
May 7, 2015
app pub date -
Nov 5, 2013
filing date -
Nov 5, 2013
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Abstract
The asphalt with modified oil fly ash additive provides an improved asphalt binder for asphalt concrete. In one embodiment, the oil fly ash is modified to include a carboxylic acid group (—COOH) attached to the surface of the oil fly ash. In another embodiment, the oil fly ash is modified to attach 1-octadecanoate to the surface of the oil fly ash. The modified oil fly ash additive may be mixed with the asphalt cement or binder material, or mixed with the aggregate material for incorporation into asphalt concrete. The asphalt with modified oil fly ash additive improves the performance grade of asphalt binder from 64-10 to 82-10, eliminates the need for the usual commercial polymer modifier, improves the rutting resistance of asphalt concrete mixes over unmodified oil fly ash, and provides for an environmentally friendly way of disposing of oil fly ash waste.
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