ROADS FOR LOW TRAFFIC FLOW--AUSTRALIA

THE USE OF LOCAL, NON-TRADITIONAL, NATURALLY OCCURRING MATERIALS IN RURAL ROADS IN AUSTRALIA IS DISCUSSED. THE MATERIALS DO NOT ALWAYS COMPLY WITH THE USUAL STANDARD SPECIFICATIONS, AND INVESTIGATIONS ARE CONTINUING TO EVALUATE THOSE MATERIALS WHICH GIVE SATISFACTORY PERFORMANCE. THE PERFORMANCE OF LOW COST ROADS UNDER TRAFFIC REINFORCEMENT OF ROAD SURFACES ON TROPICAL OR SUB-TROPICAL CLIMATES IS INVESTIGATED. THE SCARCITY OF WATER IN MANY AREAS HAS PROMPTED THE INVESTIGATION ON SECTIONS OF SEALED RURAL ROADS CONSTRUCTED WITHOUT THE ADDITION OF WATER FOR COMPACTION OF THE CLAYEY SUBGRADES. SECTIONS OF ROAD ARE ALSO BEING INVESTIGATED IN WHICH CLAY SOIL SUBGRADES WERE CONSTRUCTED AT MOISTURE CONDITIONS INTENDED TO REDUCE SUBSEQUENT SEASONAL MOISTURE DAMAGE AND SHRINKAGE CRACKING OF THE PAVEMENT. THESE INVESTIGATIONS ARE PROVIDING INFORMATION ON THE ADVANTAGES OF STAGE CONSTRUCTION, AND THE IMPORTANCE OF ADEQUATE PAVEMENT THICKNESS OVER "CLOSE TO SATURATED" SUBGRADE CONDITIONS IN ADVERSE ENVIRONMENTAL CIRCUMSTANCES ENCOUNTERED IN WETTER AREAS. A WIDER RANGE OF PAVEMENT MATERIALS CAN BE SUCCESSFULLY USED IN THE MORE FAVORABLE CIRCUMSTANCES IN DRIER AREAS. INFORMATION IS ALSO PROVIDED ON THE PREVALENCE OF DETERIORATION NEAR PAVEMENT EDGES ASSOCIATED FREQUENTLY WITH THE INGRESS OF SURFACE WATER THROUGH THE SHOULDERS. ROAD AUTHORITIES GIVE CLOSE ATTENTION TO EROSION PROBLEMS. WHILE THE POTENTIAL DESTRUCTIVENESS OF SOME ROAD STRUCTURES IS WIDELY APPRECIATED, THE CONTRIBUTION OF ROADS AND BORROW AREAS TO THE SILTATION AND DISCOLORATION OF STREAMS AND RESERVOIRS IS BEING INCREASINGLY RECOGNIZED. THE ROLE OF SECONDARY ROADS IN SOCIAL AND ECONOMIC DEVELOPMENT IS DISCUSSED. IN A DISCUSSION OF THE MAINTENANCE COSTS OF LIGHTLY TRAFFICKED ROADS, A STUDY THAT WAS MADE OF MAINTENANCE OF ROADS IN TASMANIA IS OUTLINED. A SYSTEM FOR THE ASSESSMENT OF AN ECONOMICAL AXLE LOAD FOR THE AUSTRALIAN ROADS IS REVIEWED. COMMENTS ARE ALSO MADE ON ASPECTS SUCH AS FLOODWAYS AND LOW LEVEL CROSSINGS OF WATER-WAYS.

  • Supplemental Notes:
    • QUESTION VII ANS-1
  • Authors:
    • Glynn, D F
  • Publication Date: 1971

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Filing Info

  • Accession Number: 00233465
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 11 1974 12:00AM