Asphalt modifier

Abstract

To provide an asphalt modifier, an asphalt composition, and an asphalt mixture that can produce asphalt pavement that exhibits excellent strength regardless of variations in aggregate properties. [Solution] [1] an asphalt modifier containing polyethyleneimine and polyester, [2] an asphalt composition containing polyethyleneimine, polyester and asphalt, [3] an asphalt mixture containing polyethyleneimine, polyester, asphalt and aggregate.

Claims

1. An asphalt modifier containing polyethyleneimine and polyester.

2. The asphalt modifier according to claim 1, wherein the number average molecular weight of the polyethyleneimine is 100 or more and 100,000 or less.

3. The asphalt modifier according to claim 1 or 2, wherein the polyethyleneimine is contained in a ratio of 1 part by mass or more and 50 parts by mass or less per 100 parts by mass of polyester.

4. An asphalt composition containing polyethyleneimine, polyester, and asphalt.

5. The asphalt composition according to claim 4, wherein the polyester content is 1 part by mass or more and 40 parts by mass or less per 100 parts by mass of asphalt.

6. An asphalt mixture containing polyethyleneimine, polyester, asphalt, and aggregate.

7. The asphalt mixture according to claim 6, comprising 5 to 30 parts by mass of material passing through a 0.15 mm sieve in a sieve test, per 100 parts by mass of aggregate.

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