This specification covers the following five penetration grades of asphalt binder for use in highway construction: 40 to 50, 60 to 70, 85 to 100, 120 to 150, and 200 to 300. For asphalt binders graded by viscosity, see M 226
The values stated in SI units are to be regarded as the standard.
MANUFACTURE
Asphalt binder shall be prepared by the refining of crude petroleum by suitable methods.
PROPERTIES
The asphalt binder shall be homogeneous, free from water, and shall not foam when heated to l 75°C (347°F).
The various grades of asphalt binder shall conform to the requirements given in Table 1.
Table 1-Requirements for Asphalt Binder
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