Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: AASHTO PP 98:2020
• Năm ban hành / Publication date: 2020
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Standard Practice for Asphalt Surface Dielectric Profiling System Using Ground Penetrating Radar
• Thay thế cho / Replace: AASHTO PP 98:2019
• Số trang / Page: 10

Phạm vi áp dụng / Scope of standard

This standard specifies the equipment and software requirements for a dielectric profiling system (DPS). Calibration and verification procedures are also detailed.

A DPS uses ground penetrating radar (GPR) technology to continuously measure asphalt compaction quality up to highway speeds. The DPS system reports the asphalt surface dielectric constant which is strongly correlated to asphalt air void content (FHWA/TX-92/1233-1). As the dielectric constant increases, air void content decreases.

A DPS may be a single- or multi-channel system and may be cart or vehicle-mounted.