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AASHTO PP 98-20 PDF
Standard Practice for Asphalt Surface Dielectric Profiling System Using Ground Penetrating Radar
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Product Code: AASHTO PP 98-20
Stock In Stock
Published: 2020
Number of Pages: 10
File Size: 1 file, 1.1 MB
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- AA-The Aluminum Association
- AAMI-Association for the Advancement of Medical Instrumentation
- AASHTO-American Association of State Highway and Transportation Officials
- AATCC-American Association of Textile Chemists and Colorists
- ACI-American Concrete Institute
- ANSI-American National Standards Institute
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Product Description
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.



