BASE STABILIZATION WITH CUT BACK ASPHALT AND CHLORIDES

THIS REPORT DESCRIBES THE CONSTRUCTION AND EVALUATION OF A TEST ROAD IN NOBLES CO., MINNESOTA. THE TEST ROAD WAS DIVIDED INTO SIX EXPERIMENTAL SECTIONS, EACH APPROXIMATELY ONE MILE LONG. SECTIONS 1 AND 2 FEATURED A 1 1/2 INCH AGGREGATE BASE COURSE STABILIZED WITH MC-2 CUT-BACK ASPHALT. SECTION 3 HAD A 3 INCH NA CL STABILIZED AGGREGATE BASE. SECTION 4 HAD 3 INCH CA CL2 STABILIZED AGGREGATE BASE. SECTION 5 FEATURED A 3 INCH UNTREATED BASE WITH THE BOTTOM 3 INCH OF THE 5 INCH SAND-GRAVEL SUBBASE STABILIZED WITH CA CL2. SECTION 6 WAS UNTREATED CONTROL (3 INCH AGGREGATE) BASE WITH 5 INCH SAND-GRAVEL SUBBASE). THE PERFORMANCE OF OF THE SECTIONS WAS EVALUATED BY PLATE BEARING, BENKELMAN BEAM, MOISTURE-DENSITY AND CHLORIDE CONTENT TEST AND VISUAL OBSERVATIONS. THE AUTHOR CONCLUDES THAT NO BENEFITS RESULTED FROM THE ADDITION OF CHLORIDES TO THE BASE OR SUBBASE AS THEY BEGAN MIGRATING OUT OF THE GRANULAR LAYERS A FEW MONTHS AFTER CONSTRUCTION. THE SECTIONS WITH 1 1/2 INCH MC-2 CUT- BACK ASPHALT TREATED BASE PERFORMED ABOUT AS WELL AS THE CONTROL SECTIONS WITH 3 INCHES OF UNTREATED BASE. /BPR/

  • Supplemental Notes:
    • Hpr-1/7/, STATE NO 303
  • Corporate Authors:

    Minnesota Department of Highways

    ,    
  • Authors:
    • Korfhage, G R
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00230632
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Files: TRIS, STATEDOT
  • Created Date: Aug 15 2004 2:19AM