HMA joint construction

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Presentation on best practices for asphalt pavement joint construction delivered at the CalAPA San Diego Technical Committee meeting April 23, 2014.

Text of HMA joint construction

  • 1.Wednesday, April 23, 2014 San Diego, CA

2. TransverseJointConstruction Methods LongitudinalJointConstruction Methods ProperJointLuting JOINTCONSTRUCTION 3. Goodjoints areno mystery Training& practice JOINTCONSTRUCTION 4. JOINTCONSTRUCTION 5. JOINTCONSTRUCTION 6. ButtJoint JOINTCONSTRUCTION 7. JOINTCONSTRUCTION RolledMat RolledMat NewMat Paper PaperedTransverseJoint Remove paper &ramp 8. JOINTCONSTRUCTION 9. JOINTCONSTRUCTION 10. JOINTCONSTRUCTION 11. JOINTCONSTRUCTION 12. JOINTCONSTRUCTION 13. JOINTCONSTRUCTION 14. JOINTCONSTRUCTION Remove Tapered area 15. Centertowpoint Setwidth Setcrown Setextender slope &height Useboardsthat allowfor compactionrate JOINTCONSTRUCTION 16. JOINTCONSTRUCTION Agoodruleofthumbistoraisethescreed20 percentmorethanthecompactedthickness. 17. JOINTCONSTRUCTION 18. Firststepisscreedpre-heating JOINTCONSTRUCTION FuelPump Spraydown/ Burner GlowPlug/ FanSwitches 19. JOINTCONSTRUCTION Nullscreed 20. JOINTCONSTRUCTION Introduce angle ofattack Crankuntil resistanceis felt 21. JOINTCONSTRUCTION Fillauger chamberhalffull Conveyor manually Augermanually Shovelifneeded 22. JOINTCONSTRUCTION 23. JOINTCONSTRUCTION 24. JOINTCONSTRUCTION 25. JOINTCONSTRUCTION 26. JOINTCONSTRUCTION 27. JOINTCONSTRUCTION 28. Checksmoothness beforethemat coolstoensurea good,smoothjoint JOINTCONSTRUCTION 29. JOINTCONSTRUCTION What Happened Here? 30. Longitudinal Joints JOINTCONSTRUCTION 31. JOINTCONSTRUCTION StaggeredPavingJoints 32. JOINTCONSTRUCTION 33. JOINTCONSTRUCTION 34. NotchWedge(CaltransSpecs) JOINTCONSTRUCTION 35. NotchWedgeJointMaker JOINTCONSTRUCTION 36. JOINTCONSTRUCTION 37. JOINTCONSTRUCTION 38. JOINTCONSTRUCTION 39. JOINTCONSTRUCTION 40. JOINTCONSTRUCTION 41. JOINTCONSTRUCTION 42. JOINTCONSTRUCTION Compacted Mat Uncompact ed Mat Typical Overlap on Longitudinal Joints Thickness of Rolldown 1 1 inches 43. JOINTCONSTRUCTION Compacted Mat Uncompacted Mat MixBumpedBacktoJoint 44. JOINTCONSTRUCTION 45. Whyisthis wrong? JOINTCONSTRUCTION 46. JOINTCONSTRUCTION 47. JOINTCONSTRUCTION 48. Quality Jointsare No Accident! JOINTCONSTRUCTION 49. Questions?? JOINTCONSTRUCTION

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