Amine-containing asphalt binder composition

Patent metadata

Field	Value
Publication number	US-11352294-B2
Application number	US-201715447810-A
Country	US
Kind code	B2
Filing date	Mar 2, 2017
Priority date	Mar 4, 2016
Publication date	Jun 7, 2022
Grant date	Jun 7, 2022

Abstract

Provided herein is an asphalt binder composition, and more particularly, an amine-containing asphalt binder composition capable of improving mixability between an asphalt binder and an aggregate, and compactibility and water resistance of an asphalt paving mixture. More particularly, the present invention relates to an asphalt binder composition capable of being used in hot mix asphalt for improving workability and/or stripping-resistance, warm-mix asphalt, recycling of reclaimed asphalt pavement, or the like.

First claim

What is claimed is:

1. An asphalt binder composition comprising:
an additive including a repeating unit represented by the following Chemical Formula 1 and at least one terminal group represented by the following Chemical Formula 2, wherein the additive has a total amine content of 100 to 1500 mg KOH/g, a viscosity of 1500 to 15000 cSt, the viscosity being measured at 25° C., and a nitrogen/oxygen molar ratio of 0.5 to 4, and the additive is contained in an amount of 0.25 to 0.8 parts by weight based on 100 parts by weight of the asphalt binder; and
an asphalt binder:

in Chemical Formula 1, A is selected from hydrogen or a functional group represented by Chemical Formula 2, and
in Chemical Formula 2, R 1 is C 1 -C 30 alkyl.

2. The asphalt binder composition of claim 1 , wherein the additive is any one or a mixture of two or more selected from compounds represented by the following Chemical Formula 3:

in Chemical Formula 3, n is an integer of 0 to 10, R 1 is C 1 -C 30 alkyl,
A, R 2 , and R 3 are each independently selected from hydrogen or

any one or two or more of A, R 2 , and R 3 are necessarily

and
R 4 is C 1 -C 30 alkyl.

3. The asphalt binder composition of claim 2 , wherein the compound represented by Chemical Formula 3 has a weight average molecular weight of 500 to 1500 g/mol.

4. The asphalt binder composition of claim 1 , wherein the asphalt binder is any one or a mixture of two or more selected from natural asphalt, petroleum-based asphalt, petroleum-based pitch, oxidized asphalt, and reclaimed asphalt.

5. The asphalt binder composition of claim 4 , wherein the asphalt binder is a modified asphalt binder further including a polymer modifier.

6. The asphalt binder composition of claim 5 , wherein the polymer modifier is any one or a mixture of two or more selected from natural rubber, a styrene-butadiene- rubber copolymer, a styrene-butadiene-styrene copolymer, polyethylene, polypropylene, nylon, vinyl chloride, ethylene methacrylate, ethylene propylene rubber, an ethylene vinylacetate copolymer, polybutadiene, polyisoprene, butyl rubber, styrene-butadiene rubber, polychloroprene rubber, and waste tire rubber.

7. The asphalt binder composition of claim 1 , wherein the asphalt binder composition is used in a hot mix asphalt mixture, a warm-mix asphalt mixture, a recycled asphalt mixture using reclaimed asphalt pavement, or a foaming asphalt mixture.

8. An asphalt paving mixture comprising the asphalt binder composition of claim 1 ; and an aggregate.

9. The asphalt paving mixture of claim 8 , further comprising a filler,
wherein the filler is any one or a mixture of two or more selected from limestone powder, slaked lime, portland cement, aggregate dust, steel slag dust, casting dust, fly ash, carbon black, sulfur, lignin, cellulose fiber, nylon fiber, polyester fiber, polyethylene fiber, polypropylene fiber, polyvinylalcohol fiber, and natural fiber.

10. The asphalt paving mixture of claim 8 , wherein the aggregate is selected from a natural mineral aggregate, a reclaimed asphalt pavement, and a mixed aggregate thereof.

11. The asphalt paving mixture of claim 10 , wherein the mixed aggregate includes 0.1 to 70 wt % of reclaimed asphalt pavement.

12. The asphalt paving mixture of claim 8 , wherein the asphalt paving mixture is used in asphalt concrete pavement selected from dense-graded asphalt concrete pavement, coarse-graded asphalt concrete pavement, open-graded asphalt concrete pavement, water-permeable asphalt concrete pavement and stone-matrix asphalt concrete pavement.

Assignees

• Sk Innovation Co Ltd
• Sk Energy Co Ltd

Inventors

• Kim Ki Byung
• Jeon Bo Ram
• Woo Won Jun
• Lee Sang Seob
• Lee Min Hee
• Zhao Haibo

Classifications

• Y02A30/30

  in transportation, e.g. on roads, waterways or railways · CPC title

• C08L2555/34

  Recycled or waste materials, e.g. reclaimed bitumen, asphalt, roads or pathways, recycled roof coverings or shingles, recycled aggregate, recycled tires, crumb rubber, glass or cullet, fly or fuel ash, or slag · CPC title

• C04B14/28

  of calcium · CPC title

• C04B26/26

  Bituminous materials, e.g. tar, pitch {(C08L95/00 takes precedence)} · CPC title

• C08L2205/16

  Fibres; Fibrils · CPC title