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AASHTO M 20-70 (2004)
- Standard Specification for Penetration-Graded Asphalt Cement
- standard by American Association of State and Highway Transportation Officials, 1970
- Publisher: AASHTO
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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 AASHTO M 226.