STUDY OF THE THERMAL BEHAVIOR OF ROCKS USABLE FOR ROAD CONSTRUCTION /IN GERMAN/

THE RESULTS OF RESEARCH CARRIED OUT AT THE INSTITUT FUR STRASSENWESEN OF THE AACHEN TECHNICAL UNIVERSITY ARE DESCRIBED. LABORATORY TESTS SHOWED THAT IN THE CASE OF CRUSHED ROCK HAVING SUITABLE CHARACTERISTICS FROM THE PHYSICAL AND THERMAL POINT OF VIEW, A VERY RAPID INCREASE IN THE IMPACT FRAGMENTATION MUST BE EXPECTED IN THE RANGE OF TEMPERATURES FROM 550 DEGREES C. IN THE CASE OF AGGREGATE MATERIALS WHICH HAD PASSED THROUGH THE DRYING DRUM OF A BITUMINOUS MIX INSTRALLATION, NO SUCH INCREASE OR ANYTHING APPROACHING IT WAS OBSERVED. EXPLANATIONS ARE GIVEN FOR THIS DIFFERENCE. IT MUST BE ASSUMED THAT DUE TO THERMAL STRESSES IN THE PREPARATION, CRUSHED ROCKS IN A MIX OR IN BITUMINOUS COURSES HAVE DIFFERENT CHARACTERISTICS FROM THOSE OF THE ORIGINAL MATERIAL FROM THE CRUSHING PLANT. /TRRL/

  • Corporate Authors:

    Die Naturstein-industrie /Germany

    ,    
  • Authors:
    • Kohler, B
  • Publication Date: 1970

Media Info

  • Features: Photos; References; Tables;
  • Pagination: p. 98-106
  • Serial:
    • Issue Number: 4

Subject/Index Terms

Filing Info

  • Accession Number: 00237654
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: May 21 1973 12:00AM