STUDY OF LONGITUDINAL JOINT CONSTRUCTION IN BITUMINOUS CONCRETE PAVEMENTS

IT HAS LONG BEEN RECOGNIZED THAT LONGITUDINAL JOINTS BETWEEN SEPARATELY PLACED LANES OF BITUMINOUS CONCRETE HAVE BEEN VERY VULNERABLE TO THE EFFECTS OF WATER, WEATHER, AND TRAFFIC CONDITIONS. THIS PROJECT WAS UNDERTAKEN TO STUDY AND EVALUATE SEVERAL DIFFERENT TYPES OF JOINT CONSTRUCTION TECHNIQUES TO AID IN THE FUTURE CONSTRUCTION OF MORE DURABLE JOINTS. FOR THE PURPOSES OF THIS STUDY ONLY COLD FACE JOINT CONSTRUCTION WAS USED, WITH THE ROLLING TECHNIQUE VARIED IN THE SECOND PLACED LANE TO GIVE THREE METHODS OF JOINT CONSTRUCTION, THE LAP JOINT, THE PINCHED JOINT, AND THE FORCED JOINT. THE EVALUATION SHOWS THAT, AS APPLIED IN THIS STUDY, THERE IS NO SUPERIOR ROLLING METHOD; ALL APPEAR TO BE EQUAL IN THE APPLICATION OF END RESULTS. TEST RESULTS SHOWED VARIATIONS IN THE DENSITY WITHIN EACH LANE OF EACH TEST SITE. IN ALL CASES, THE IMMEDIATE JOINT AREA REFLECTED LOWER DENSITY PROPERTIES THAN ADJACENT AREAS. THERE IS EVIDENCE, HOWEVER, THAT THE CONSTRUCTION DURING AND AFTER RESEARCH IMPLEMENTATION AND DIRECTION WAS SUPERIOR TO THE QUALITY OF THE CONSTRUCTION PRIOR TO THE IMPLEMENTATION OF THIS PROJECT. THEREFORE, IT MAY BE SAID THAT IMPROVED JOINT CONSTRUCTION MAY BE OBTAINED THROUGH THE USE OF ADDITIONAL CARE IN THE FIELD. IT IS ALSO FELT THAT PRESENT TEST METHODS ARE NOT TRUE PERFORMANCE INDICATORS OF THE LONGITUDINAL JOINTS, AS VISUAL EXAMINATION OVER PERIODS OF EXPOSURE UP TO FIVE YEARS REFLECT SATISFACTORY CONSTRUCTION. /AUTHOR/

Subject/Index Terms

Filing Info

  • Accession Number: 00214526
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: Study No Aw-71-60-46
  • Files: TRIS, USDOT, STATEDOT
  • Created Date: Mar 27 1972 12:00AM