Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO M 20:1970
• Năm ban hành / Publication date: 1970
• Tình trạng / Status: W - Hết hiệu lực
• Tên tiếng Anh / Title in English: Standard Specification for Penetration-Graded Asphalt Cement
• Thay thế cho / Replace: AASHTO M20:1970
• Số trang / Page: 2

Phạm vi áp dụng / Scope of standard

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.

The values stated in SI units are to be regarded as the
standard.