EVALUATION OF DIELECTRIC MEASUREMENT APPARATUS FOR DETERMINING PAVEMENT DENSITY

THE ELECTRONIC COMPONENTS OF THE DIELECTRIC DEVICE INCLUDE TWO 6 VOLT BATTERIES, AN OSCILLATOR TO CONVERT DC CURRENT TO AC FOR THE SENSING FIELD, AND TWO SETS OF SENSING ELECTRODES (CAPACITOR PLATES). A MILLIAMMETER AND AMPLIFIER ARE USED TO INDICATE THE VOLTAGE DEVELOPED ACROSS THE INDUCTANCE CAPACITANCE RESONANCE CIRCUIT. OUTPUT ON THE MILLIAMMETER INDICATE CHANGES IN DENSITY OF ASPHALT AS THE CAPACITOR PLATES SLIDE ACROSS THE PAVEMENT. TEST RESULTS INDICATE THAT GOOD CORRELATIONS EXIST BETWEEN THE DIELECTRIC DEVICE AND CORES EXTRACTED FROM THE ASPHALT PAVEMENT. /AUTHOR/

• Supplemental Notes:
  • Rept 72-2
• Corporate Authors:

  Colorado Department of Highways

  4201 East Arkansas Avenue
  Denver, CO  United States  80222
• Authors:
  • Donnelly, D E
  • Swanson, H N
• Publication Date: 1972-2

Media Info

• Pagination: 37 p.

Subject/Index Terms

• TRT Terms: Asphalt pavements; Density; Dielectric materials; Measurement
• Old TRIS Terms: Density measurement
• Subject Areas: Geotechnology; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00217214
• Record Type: Publication
• Files: TRIS, STATEDOT
• Created Date: Jul 9 1972 12:00AM