BITUMINOUS AGGREGATE BASE COURSE: SURVEY OF STATE PRACTICES

A TABULATION OF DATA OBTAINED FROM QUESTIONNAIRES SENT TO THE 50 STATE HIGHWAY DEPARTMENTS, DISTRICT OF COLUMBIA, AND PUERTO RICO IS REPORTED. RESPONSE TO THE QUESTIONNAIRE WAS 100 PERCENT WITH MANY RESPONDENTS PROVIDING ADDITIONAL INFORMATION. INFORMATION TABULATED HERE IS EXTRACTED FROM THE REPLIES TO THE QUESTIONNAIRE WITH AS LITTLE EDITING AS POSSIBLE AND WHERE IT HAS BEEN NECESSARY ONLY THE FORM, NOT THE SUBSTANCE, OF THE REPLY HAS BEEN CHANGED. IN CERTAIN RESPECTS, TERMINOLOGY USED IN THE QUESTIONNAIRE WAS NOT SUITABLE; YET ALTERNATIVE TERMINOLOGY IS NOT AVAILABLE. FOR EXAMPLE, IN CONSIDERING THE NAMES OF TYPES OF BITUMINOUS BOUND BASE COURSES, THE SUBCOMMITTEE CONSIDERED AND REJECTED TERMS SUCH AS "DENSE GRADED" AND "SAND-ASPHALT" BECAUSE THESE TERMS ARE NOT UNIVERSALLY USED AND ACCEPTED. YET, SOME RESPONDENTS COULD NOT CLASSIFY THEIR MIXTURES INTO THE TYPE CATEGORIES THAT WERE USED. IT IS NOT, IN ITS ENTIRETY, A TABULATION OF FACTS CONCERNING BITUMINOUS BOUND BASES. SUMMARIZATION, ANALYSIS OR EVALUATION OF THE DATA HAVE NOT BEEN ATTEMPTED. THOUGH CERTAIN ASPECTS REQUIRE CLARIFICATION, DATA ARE USEFUL & INFORMATIVE IN THEIR PRESENT FORM. THE RESULTS REPRESENT PRACTICES EMPLOYED IN BITUMINOUS AGGREGATE BASE COURSE CONSTRUCTION BY THE 50 STATE HIGHWAY DEPARTMENTS, THE DISTRICT OF COLUMBIA, AND PUERTO RICO DURING 1969. /AUTHOR/

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    • 67 PP, 4 TAB, 2 APP Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
  • Publication Date: 1971

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  • Accession Number: 00211591
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Jun 29 1971 12:00AM