CONTROL STRIP STUDY

THIS REPORT IS CONCERNED WITH THE APPLICATION OF THE "CONTROL STRIP" TECHNIQUE USING NUCLEAR DEVICES FOR COMPACTION CONTROL OF CERTAIN BASE COURSES AND ASPHALTIC CONCRETE SURFACE COURSES. THE TECHNIQUE, EVALUATED HERE, CONSISTS OF APPLYING INCREASINGLY COMPACTIVE EFFORT TO A SMALL SECTION (300 FEET) OF THE MATERIAL TO ESTABLISH THE OPTIMUM ROLLING PATTERN FOR THAT MATERIAL. NUCLEAR TESTING WAS USED TO DETERMINE BOTH THE MAXIMUM DENSITY AND DESIRED ROLLER PATTERN IN THE "CONTROL STRIP." THE ENSUING CONSTRUCTION WAS THEN TESTED IN SEGMENTS (2000 FEET) BY NUCLEAR MEANS TO CHECK FOR CONFORMANCE TO A CERTAIN PERCENTAGE OF THE "CONTROL STRIP" DENSITY. THE DATA COLLECTED AND THE FIELD EXPERIENCE GAINED INDICATED (1) THAT THE "CONTROL STRIP" TECHNIQUE USING NUCLEAR DEVICES OFFERED A QUICK AND FLEXIBLE APPROACH TO THE COMPACTION CONTROL OF BASE AND ASPHALTIC CONCRETE SURFACE COURSES; (2) THAT THE VARIABILITY OF DATA USING THESE PROCEDURES WAS NORMALLY WITHIN THE MAGNITUDE OF VARIATION ENCOUNTERED WITH THE CONVENTIONAL METHODS OF DENSITY DETERMINATIONS; (3) THE VARIATION IN THE LEVEL OF COMPACTION FROM ONE SECTION TO ANOTHER WAS MUCH MORE PRONOUNCED FOR CEMENT STABILIZED BASE COURSES THAN UNSTABILIZED BASES. /AUTHOR/

Subject/Index Terms

Filing Info

  • Accession Number: 00214525
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: Study No 69 - 2s
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Mar 2 1972 12:00AM