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US 12,104,062 B2Granted
Asphalt composition and manufacturing method therefor, and manufacturing method for asphalt mixture
AssigneeKao Corporation
InventorsYusuke Akino, Ryoichi Hashimoto, Kohei Yamada, Yasukazu Kumita, Kazutomo Osaki
Life of this patent
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Abstract
The present invention relates to an asphalt composition containing asphalt, cellulose, and a polyester.
Claims16
An asphalt composition, comprising:
- asphalt, cellulose, and a polyester, wherein,
- based on 100 parts by mass of the asphalt, a content of the cellulose is 0.01 parts by mass or more and 10 parts by mass or less and a content of the polyester is 2 parts by mass or more and 30 parts by mass or less;
- and
- the cellulose has a crystallization index of 50% or less, the crystallization index being a crystallization index of type I cellulose calculated from a diffraction intensity value measured by an X-ray crystal diffraction method according to the Segal method and defined by formula (A):
- Crystallization index of cellulose (%)=[(I22.6−I18.5)/I22.6]×100 (A)
- where I22.6 represents a diffraction intensity of a lattice (002) plane in the X-ray diffraction measured at a diffraction angle 2θ of 22.6°, and I18.5 represents a diffraction intensity of an amorphous part measured at a diffraction angle 2θ of 18.5°.
3 more elements
A method for producing an asphalt mixture, the method comprising:
- (i) mixing asphalt, a polyester, and cellulose to obtain an asphalt composition;
- and then
- (ii) mixing the asphalt composition with an aggregate,
- wherein the cellulose has a crystallization index of 50% or less, the crystallization index being a crystallization index of type I cellulose calculated from a diffraction intensity value measured by an X-ray crystal diffraction method according to the Segal method and defined by formula (A):
- Crystallization index of cellulose (%)=[(I22.6−I18.5)/I22.6]×100 (A)
- where I22.6 represents a diffraction intensity of a lattice (002) plane in the X-ray diffraction measured at a diffraction angle 2θ of 22.6°, and I18.5 represents a diffraction intensity of an amorphous part measured at a diffraction angle 2θ of 18.5°.
3 more elements
A asphalt composition, comprising:
- asphalt, cellulose, and a polyester, wherein
- the cellulose has been subjected to a surface hydrophobization treatment with a surface hydrophobizing agent;
- and
- the cellulose has a crystallization index of 50% or less, the crystallization index being a crystallization index of type I cellulose calculated from a diffraction intensity value measured by an X-ray crystal diffraction method according to the Segal method and defined by formula (A):
- Crystallization index of cellulose (%)=[(I22.6−I18.5)/I22.6]×100 (A)
- where I22.6 represents a diffraction intensity of a lattice (002) plane in the X-ray diffraction measured at a diffraction angle 2θ of 22.6°, and I18.5 represents a diffraction intensity of an amorphous part measured at a diffraction angle 2θ of 18.5°.
3 more elements
Dependencies are inferred from the claim text.