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

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

2. • Transverse
Joint
Construction
Methods
• Longitudinal
Joint
Construction
Methods
• Proper
Joint
Luting
JOINT
CONSTRUCTION

3. • Good
joints
are
no
mystery
• Training
&
practice
JOINT
CONSTRUCTION

4. JOINT
CONSTRUCTION

5. JOINT
CONSTRUCTION

6. Butt
Joint
JOINT
CONSTRUCTION

7. JOINT
CONSTRUCTION
Rolled
Mat
Rolled
Mat
New
Mat
Paper
Papered
Transverse
Joint
Remove
paper
&
ramp

8. JOINT
CONSTRUCTION

9. JOINT
CONSTRUCTION

10. JOINT
CONSTRUCTION

11. JOINT
CONSTRUCTION

12. JOINT
CONSTRUCTION

13. JOINT
CONSTRUCTION

14. JOINT
CONSTRUCTION
Remove
Tapered area

15. • Center
tow
point
• Set
width
• Set
crown
• Set
extender
slope
&
height
• Use
boards
that
allow
for
compaction
rate
JOINT
CONSTRUCTION

16. JOINT
CONSTRUCTION
A
good
rule
of
thumb
is
to
raise
the
screed
20
percent
more
than
the
compacted
thickness.

17. JOINT
CONSTRUCTION

18. • First
step
is
screed
pre-­‐heating
JOINT
CONSTRUCTION
Fuel
Pump
Spraydown
/
Burner
Glow
Plug
/
Fan
Switches

19. JOINT
CONSTRUCTION
• Null
screed

20. JOINT
CONSTRUCTION
• Introduce
angle
of
attack
• Crank
until
resistance
is
felt

21. JOINT
CONSTRUCTION
• Fill
auger
chamber
half
full
• Conveyor
manually
• Auger
manually
• Shovel
if
needed

22. JOINT
CONSTRUCTION

23. JOINT
CONSTRUCTION

24. JOINT
CONSTRUCTION

25. JOINT
CONSTRUCTION

26. JOINT
CONSTRUCTION

27. JOINT
CONSTRUCTION

28. • Check
smoothness
before
the
mat
cools
to
ensure
a
good,
smooth
joint
JOINT
CONSTRUCTION

29. JOINT
CONSTRUCTION
What
Happened
Here?

30. Longitudinal
Joints
JOINT
CONSTRUCTION

31. JOINT
CONSTRUCTION
Staggered
Paving
Joints

32. JOINT
CONSTRUCTION

33. JOINT
CONSTRUCTION

34. Notch
Wedge
(Caltrans
Spec’s)
JOINT
CONSTRUCTION

35. Notch
Wedge
Joint
Maker
JOINT
CONSTRUCTION

36. JOINT
CONSTRUCTION

37. JOINT
CONSTRUCTION

38. JOINT
CONSTRUCTION

39. JOINT
CONSTRUCTION

40. JOINT
CONSTRUCTION

41. JOINT
CONSTRUCTION

42. JOINT
CONSTRUCTION
Compacted
Mat
Uncompact
ed Mat
Typical Overlap on
Longitudinal Joints
Thickness of
Rolldown
1 – 1½ inches

43. JOINT
CONSTRUCTION
Compacted
Mat
Uncompacted
Mat
Mix
“Bumped
Back”
to
Joint

44. JOINT
CONSTRUCTION

45. • Why
is
this
wrong?
JOINT
CONSTRUCTION

46. JOINT
CONSTRUCTION

47. JOINT
CONSTRUCTION

48. Quality
Joints
are
No
Accident!
JOINT
CONSTRUCTION

49. Questions??
JOINT
CONSTRUCTION