Best Practices for Asphalt Longitudinal...
Transcript of Best Practices for Asphalt Longitudinal...
![Page 1: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/1.jpg)
Best Practices for Asphalt Longitudinal Joints
A Cooperative Effort between AI & FHWA
Mark Buncher, Ph.D., P.E. Director of Engineering
Asphalt Institute Aug 29, 2012
![Page 2: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/2.jpg)
Two Goals for Project
![Page 3: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/3.jpg)
For Today
![Page 4: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/4.jpg)
Don’t We Already Know How
To Build a Longitudinal Joint?
![Page 5: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/5.jpg)
I-71 just North
of Cincinnati
![Page 6: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/6.jpg)
I-71 between
Cincinnati
and
Columbus
![Page 7: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/7.jpg)
I-71 in
Columbus
![Page 8: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/8.jpg)
“ In recent years, it has become evident
how critical longitudinal joint construction
is to the life of the pavement structure…
Many pavements have been or are in the
process of being resurfaced as a direct
or indirect result of longitudinal joint
deterioration.”
Kentucky Transportation Center
College of Engineering, 2002
![Page 9: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/9.jpg)
LCC
Alternate Bid Competitiveness
DOT Program Costs
HMA Industry’s Livelihood
the Travelling Public
An Agency and
Industry Concern
Longevity matters, it impacts:
![Page 10: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/10.jpg)
Experts Interviewed…
10 Consultants • Jim Scherocman
• Chuck Deahl
• Jim Heddrich
• Ron Corun
• Larry Michael
• Steve Neal
• Brian Prowell
• Tom Skinner
• Frank Colella
• Wes McNett
![Page 11: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/11.jpg)
9 NAPA Sheldon D. Hayes Winners “Single best paving project of the year.”
Note: Lindy Paving has won 3 times in the last 10 years!
![Page 12: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/12.jpg)
Interview Questions
![Page 13: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/13.jpg)
Not Always
![Page 14: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/14.jpg)
The Best Longitudinal Joint
Echelon Paving
Rolled Hot
New Jersey
![Page 15: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/15.jpg)
Echelon Paving Longitudinal Joint
Joint passes between the quarters
![Page 16: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/16.jpg)
But, the need to
maintain traffic
limits the opportunities
to pave in echelon
Consequently, most longitudinal joints are
built with a cold joint.
![Page 17: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/17.jpg)
We Know Unsupported Edge Will
Have Lower Density
Proper Overlap Sufficient Material for Roll-Down
Low Density Area
![Page 18: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/18.jpg)
Experts Were Evenly Divided Regarding Preference
Notched Wedge
Butt
![Page 19: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/19.jpg)
Wedge Joints
8:1 3:1
![Page 20: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/20.jpg)
Unacceptable
Notched Wedge
Joint Construction
![Page 21: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/21.jpg)
Less permeable mixes
• Smallest NMAS that will do the job
• Consider using a “fine” gradation
• Lower gyration levels
Min lift thickness is NMAS x 4,
exception: for “fine” gradation NMAS x 3
Mix Selection and Design Considerations
![Page 22: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/22.jpg)
Offset longitudinal joints between
layers by at least 6-inches; joint
should be at centerline, not in or
near the wheelpath
![Page 23: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/23.jpg)
3 1 2
Trucking Compaction
Paving Plant
Dump Person MTV
GETTING STARTED OFF RIGHT
![Page 24: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/24.jpg)
Tack Coat
Full width of mat to
minimize movement of
unsupported edge
![Page 25: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/25.jpg)
First Pass Must Be Straight! Unanimous that a string-line should be used to assure first
pass is straight
String-line Skip Paint Reference
![Page 26: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/26.jpg)
Great Results
![Page 27: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/27.jpg)
Tough to get proper overlap (1”)
with next pass
![Page 28: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/28.jpg)
Contact Grade Sensor
Ultrasonic Grade Sensor
Use Automatic
Control
Systems
![Page 29: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/29.jpg)
Vibratory Screed Should Always Be On
![Page 30: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/30.jpg)
END GATE
Seated on the Existing
Surface
![Page 31: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/31.jpg)
Uniform Head of Material
Across the Entire Screed
Auger
Carry Material Within
12 – 18-inches of
the End Gate
![Page 32: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/32.jpg)
Controlling material flow at
outer edges of screed and
delivering homogenous HMA
Hydraulic Extending Tunnels
Tunnels
![Page 33: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/33.jpg)
Auger not extended to
within 12 to 18-inches
of the end gate.
The result -
SEGREGATION at joint
![Page 34: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/34.jpg)
Our Recommendation:
1st Roller Pass Hangs Over 4-6 inches
![Page 35: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/35.jpg)
Alternative: Stay Back 4-6 inches
on 1st pass, then roll 2nd pass w/
slight overhang
• Concern:
–developing stress crack?
• Merit:
–minimize lateral movement?
![Page 36: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/36.jpg)
What We Don’t Want
Edge of drum inside unsupported edge
can cause cracking near the edge
Rolling Unsupported Edge
(First Paver Pass)
![Page 37: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/37.jpg)
Quality Control, Monitor Joint Density
![Page 38: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/38.jpg)
Tack the Joint! (Butt or Wedge)
Emulsion, or
PG asphalt or
Proprietary Joint
Adhesive (JA)
Good, Better, Best
![Page 39: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/39.jpg)
Paver Automation Using Joint Matcher
(versus Ski) to Always Achieve Exact
Thickness of Mat Needed
If the joint (hot-side) is
starved of material, the roller
drum will “bridge” onto the
cold mat and no further
density will occur at joint. To
ensure this never occurs,
target height difference after
compaction is 0.1”
![Page 40: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/40.jpg)
Destined for Failure
![Page 41: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/41.jpg)
Joint Matchers
G. Bridenbaugh photo
Frank Colella photo
Non-contact sensor
Contact sensor
![Page 42: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/42.jpg)
Ski best for smoothness
Arm
Averages optimum HMA thickness
over entire length of ski.
![Page 43: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/43.jpg)
Proper Overlap: 1.0 + 0.5 inches.
Exception: Milled
or sawed joint
should be 0.5
inches
![Page 44: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/44.jpg)
Bumping the joint?
![Page 45: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/45.jpg)
Don’t broadcast material across the mat
![Page 46: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/46.jpg)
Lute the Longitudinal Joint
This lute person is
doing a great job
![Page 47: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/47.jpg)
Overlap
![Page 48: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/48.jpg)
1st pass off the joint
approx 6-8 inches
2nd pass overlap
onto the cold mat
Rolling the Supported Edge
Our Recommendation:
![Page 49: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/49.jpg)
Roller
Make a roller pass in the vibratory mode
overhanging 2 to 4-inches on the cold side.
versus an Alternate Method of
1st Pass over the Supported Edge
Concern is bridging (roller being
supported by cold mat)
![Page 50: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/50.jpg)
“We can't solve problems by using the same kind
of thinking we used when we created them.”
![Page 51: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/51.jpg)
• Mill & Pave One Lane at a Time
• Cut Back joint
• Wedge Compactors
• Joint Heaters
• Joint Adhesives (hot rubberized asphalt)
• Surface Sealers Over Joint
• Rubber Tire Rollers
• Warm Mix Asphalt
![Page 52: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/52.jpg)
Mill & Pave One Lane At A Time
![Page 53: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/53.jpg)
http://www.highwaysmaintenance.com/kraktext.htm
Cutting Wheel Fixed to Roller in Europe
• Best practice in
Europe on Dense
Graded mixes on
large projects when
traffic is managed.
• Cut when mix is warm
and plastic.
• Watering of blade
prevents tearing.
• Joint then painted with
50pen binder.
• Cutting and painting
not done on open
mixes.
![Page 54: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/54.jpg)
CEM
Vibratory
Wedge
compactor
![Page 55: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/55.jpg)
Infrared Joint Heaters
![Page 56: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/56.jpg)
Application of
proprietary
joint adhesive
(JA)
![Page 57: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/57.jpg)
Surface
Sealers
![Page 58: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/58.jpg)
Many believe these help in providing a tight
surface that is more dense and less permeable.
However, when compacting the unsupported
edge, it is key to avoid lateral movement of the
mix. For this reason, pneumatic tired rollers
should never be operated close to this edge.
Intermediate rolling of the supported edge with
rubber tire rollers should be fine.
Pneumatic Rubber Tired Rollers
![Page 59: Best Practices for Asphalt Longitudinal Jointspavementvideo.s3.amazonaws.com/2012_Pavement_National/PDF/Wed 1015 - … · Best Practices for Asphalt Longitudinal Joints A Cooperative](https://reader033.fdocuments.us/reader033/viewer/2022041907/5e64110c6fafc073e5293891/html5/thumbnails/59.jpg)
WMA as Compaction Aid