Warm mix asphalt compositions as pavement surface treatment
AssigneeQuimikao, S.A. De C.V.
InventorsÁlvaro Gutiérrez Muñiz, Raúl Terán Orozco, Luis Enrique Ramirez Soto, Luis Felipe Ortiz Cardenas
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Abstract
Disclosed herein is a warm mix asphalt additive comprising (a) a wax; (b) a phosphoric ester; and (c) a fatty amine. Preferably component (a) is a fatty amide wax and component (b) is a C16-C18 alkyl phosphoric ester. Also disclosed is a warm mix asphalt binder composition comprising asphalt and a warm mix asphalt additive, and methods for its preparation thereof. Additionally disclosed is a warm mix asphalt composition comprising a warm mix asphalt binder and aggregate, and methods for its preparation thereof.
Claims16
A warm mix asphalt additive, comprising:
- (a) a fatty amide wax obtained from reaction between a fatty acid and ethylenediamine;
- (b) a C16-C18 alkyl phosphoric ester;
- and
- (c) a fatty amine.
A method of surface treatment paving, said method comprising the steps of:
- A. preparing a warm mix asphalt binder composition comprising:
- i) asphalt;
- and
- ii) a warm mix asphalt additive comprising:
- (a) a fatty amide wax;
- (b) a C16-C18 alkyl phosphoric ester;
- and
- (c) a fatty amine,
- B. combining the warm mix asphalt binder composition as defined in A with aggregate at a temperature in a range of 130 to 150° C. to form a warm mix asphalt composition;
- C. applying the warm mix asphalt composition as defined in B on a surface course or base course of a pavement, wherein a temperature of the warm mix asphalt composition is in a range of 110 to 140° C.;
- and
- D. compacting the warm mix asphalt composition, wherein a temperature of the warm mix asphalt composition is in a range of 90 to 120° C.
Dependencies are inferred from the claim text.