RESEARCH ON SUBBASE MATERIALS /IN PORTUGUESE/

RESEARCH OF THE FAULT ZONES IN THE PAVEMENT SUBBASE WITH PORTABLE ELECTRONIC DEVICES IS PRESENTED. THE ELECTRONIC DEVICE HAS A TRANSMITTER, A LONG WAVE RECEIVER, AND MICROAMMETER SPECIFICALLY CALIBRATED TO CHECK THE SUBBASE MATERIALS. ONE OF THE DIFFICULTIES WAS OBTAINING FIRST QUALITY EQUIPMENT FOR THE ELECTRONIC DEVICE. FAILURES ARE DETECTED IN THE MATERIALS USED FOR THE SUBBASE OF HIGHWAY PAVEMENTS (DECOMPOSED MATERIAL, INFILTRATION NESTS, AND EVEN GEOLOGICAL FAULTS IN GREATER DEPTH). MAGNETICAL MEASUREMENTS OF THE ROCKY MATERIALS ARE TAKEN, AND THE MAGNETIC ANOMALIES OBSERVED IN THE FIELD ARE EASILY INTERPRETED. FIELD DATA, WITH CORRECTIONS OF THE LOCAL AND DAILY VARIATIONS AND THE RESIDUAL EFFECTS OF TEMPERATURE, GIVE AN ACCURACY EQUIVALENT TO DATA FROM INTERNATIONAL REVIEWS. /RRI/

• Corporate Authors:

  National Highway Department /Brazil

  ,    
• Authors:
  • Henseldt, E E
• Publication Date: 1971

Subject/Index Terms

• TRT Terms: Defects; Electronic equipment; Failure; Faults; Field studies; Magnetic detectors; Materials; Measurement; Pavement distress; Pavements; Reviews; Subbase materials; Temperature
• Uncontrolled Terms: Field data
• Old TRIS Terms: Electronic devices; Fault zones; Highway pavement; Magnetic measurements; Materials failures
• Subject Areas: Geotechnology; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00217231
• Record Type: Publication
• Source Agency: Road Research Institute /Brazil
• Files: TRIS
• Created Date: Sep 30 1972 12:00AM