FLEXIBLE PAVEMENT RESEARCH IN VIRGINIA

THE TREND AWAY FROM MACADAM TOWARD DENSE-GRADED AGGREGATE AND FINALLY TO BLACK BASE IN FLEXIBLE BASE CONSTRUCTION IS TRACED. SEVERAL NOTABLE FAILURES WHICH LED TO THE ABANDONMENT OF SELECTIVE GRADING AND THE SUBSTITUTION OF SELECT BORROW FOUNDATION COURSES ARE DESCRIBED. MENTION IS MADE OF EXPERIMENTAL CONSTRUCTION INVOLVING CEMENT- AND LIME-TREATED SUBGRADES. MORE RECENTLY THIS FEATURE HAS BEEN INCORPORATED INTO A NUMBER OF PROJECTS WHERE SUITABLE SELECT BORROW HAS NOT BEEN AVAILABLE LOCALLY. BECAUSE RECENT TRENDS HAVE IN MOST CASES TENDED TOWARD DRASTIC INCREASES IN CONSTRUCTION COSTS, VIRGINIA'S HIGHWAY RESEARCH COUNCIL HAS PERSISTENTLY SOUGHT TO DEVELOP MEANS OF MINIMIZING THESE INCREASES. THE CONSTRUCTION OF EXPERIMENTAL PROJECTS AS PART OF THE REGULAR CONSTRUCTION PROGRAM IN ORDER TO COMPARE THE PERFORMANCE OF A VARIETY OF PAVEMENT DESIGNS UNDER THE SAME TRAFFIC CONDITIONS HAS BEEN PROPOSED, AND ONE SUCH PROJECT HAS BEEN BUILT. THE PRINCIPAL PURPOSE OF THIS PAPER IS TO DESCRIBE THE PROGRAM OF EXPERIMENTAL CONSTRUCTION, THE METHODS OF EVALUATION USED, AND THE APPLICATION OF THESE METHODS TO THE FIRST EXPERIMENTAL PROJECT. /AUTHOR/

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  • Accession Number: 00214846
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: May 21 1994 12:00AM