BITUMINOUS PAVEMENT INVESTIGATION IN UTAH AND COLORADO

THE FAILED SPOTS IN NINE BITUMINOUS PAVING PROJECTS IN UTAH AND FIFTEEN IN COLORADO WERE EXAMINED TO DETERMINE THE CAUSES OF FAILURE. THE METHOD CONSISTED OF GROUP OBSERVATIONS AND DISCUSSIONS SUPPLEMENTED BY DETAILED INFORMATION AND LABORATORY TESTS ON QUALITY AND THICKNESS OF BASE AND SUBBASE COURSES, CHARACTER OF SUBGRADE SOIL, DRAINAGE AND MOISTURE CONDITIONS, QUALITY AND CONDITION OF BITUMINOUS SURFACE MIXTURES. THE EFFECTS OF TRAFFIC AND MAINTENANCE WERE CONSIDERED. THE EXTENT OF THE INVESTIGATION DID NOT PERMIT POSITIVE CONCLUSIONS ON THE CAUSES OF THE OBSERVED DEFECTS. HOWEVER COMPARISONS OF THE TEST DATA WITH SPECIFICATION REQUIREMENTS INDICATES THAT CONSTRUCTION CONTROL WAS DEFICIENT IN MANY OF THE PROJECTS. AMONG THE DISCREPANCIES ARE EXCESS OF FINES, WIDE VARIANCE IN BITUMEN CONTENT OF SAMPLES FROM THE SAME PROJECTS AND LACK OF CORRELATION BETWEEN BITUMEN CONTENT AND THE PROPER AMOUNT FOR THE AGGREGATE IN USE. SOME DISTORTION IN THE WHEEL PATHS INDICATES INSUFFICIENCY OF SUPPORT DUE TO INADEQUATE DESIGN. /AUTHOR/

  • Supplemental Notes:
    • Vol 30, pp 161-174, 1 FIG, 15 TAB, 5 PHOT
  • Authors:
    • Eager, W L
    • Worley, H E
  • Publication Date: 1951

Media Info

  • Monograph Title: Proceedings of the Thirtieth Annual Meeting of the Highway Research Board Held at Washington, D.C., January 9-12, 1951
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00207331
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Jul 25 1971 12:00AM