RADAR FOR INVESTIGATIONS INTO ROADS: NON-DESTRUCTIVE RESEARCH INTO THE PAVEMENT STRUCTURE OF ROADS BY MEANS OF RADAR

RADAR VOOR ONDERZOEK AAN WEGEN: NIET-DESTRUCTIEF ONDERZOEK NAAR DE CONSTRUCTIE-OPBOUW VAN WEGEN DOOR MIDDEL VAN RADAR

This article describes an apparatus that is used for investigating the layer configuration of pavements. Using a radar with a special scanner, mounted on a measuring vehicle, an electromagnetic wave is sent pulsewise into the pavement structure. With every discontinuity in the dielectric constant of the materials, partial reflection of the electromagnetic wave occurs. The reflected wave is received by the scanner and transformed into an electric signal. This signal is unravelled into waves differing in phase and amplitude. In this way a quantitative and a qualitative description of the pavement structure is obtained. The depth range of the radar system is discussed. This mainly depends on the energy loss in the materials and the dielectric differences on the layer interface. The measuring speed and the measuring density are discussed. Some applications of the radar system are: (a) airfield pavements; (b) wearing courses in engineering structures; and (c) detecting the reinforcement in concrete pavements.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01673297
• Corporate Authors:

  VERENIGING VAN CEMENTBETON WEGENBOUWERS (VCW)

  PO BOX 302
  BADHOEVEDORP,   Netherlands  1170 AH

  Vereniging Nederlandse Cementindustrie

  Sint Teunislaan 1, Postbus 3011
  S-Hertogenbosch,   Netherlands 
• Authors:
  • KOK, M J
• Publication Date: 1995-6

Language

• Dutch

Media Info

• Pagination: p. 19-20
• Serial:
  • BETONWEG NIEUWS
  • Issue Number: 99
  • Publisher: VERENIGING VAN CEMENTBETON WEGENBOUWERS (VCW)
  • ISSN: 0167-3297

Subject/Index Terms

• TRT Terms: Depth; Maintenance; Measuring instruments; Nondestructive tests; Pavement layers; Pavements; Radar; Surveillance
• ITRD Terms: 6155: Apparatus (measuring); 6499: Depth; 3847: Maintenance; 2931: Multicourse; 6216: Non destructive testing; 2955: Pavement; 6738: Radar; 9101: Surveillance
• Subject Areas: Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 00715755
• Record Type: Publication
• Source Agency: DIENST WEG- EN WATERBOUWKUNDE (DWW)
• Files: ITRD
• Created Date: Jan 31 1996 12:00AM