Tack Coat Best Practices - Pennsylvania Asphalt Pavement

Report
Pennsylvania Asphalt
Pavement Association
54th Annual Meeting
Asphalt Institute Initiatives
January 29, 2014
Peter T. Grass, P.E., CAE
Clinten “Clint” J. Rybak
Phillips 66 Company
AI Chairman
2014
Steve Smithey
BP Asphalt
AI Vice Chairman
2014
IARC Review – Positive Outcomes
•
•
•
•
•
•
•
•
•
Focus on “Occupational Exposure”
Inadequate Evidence re. Straight Run
Recognized “air rectified” as Distinct
Exposures Declining Over Time
Industry-sponsored Research Respected
No “Environmental” Concerns Identified
Clear separation from coal tar
Natural bitumen outside scope of review
Application temperature recognized as factor
2nd Edition – under revision
IS-230; 2nd Edition
Under revision
• Expanded sections on
oxidation, additives,
crude sources
• Expanded references
Available in print and PDF
format since March 2011
AI or Eurobitume’s websites
NBTC Progress
• Yellow: agencies &
suppliers
• Brown: agencies only
• Green: suppliers only
• Grey: opportunity!
EPIC 2014 - 2015
Experiential
Participatory
Image-driven
Connective
2014 – 2105 Class forming
•
•
•
•
•
3 of 4 facility tours
Elective options
Writing assignment
Group project
Graduation Spring 2015
Burn First Responder Safety!
• US Burn Center
research – 2011-2013
• Focus on first aid, first
responder actions
• Workplace posters,
wallet cards
• Medical paper
headed to peer
reviewed journal
Screenshot – AI’s Public Homepage
Binder Specs
Emulsion Specs
Current Status - Emulsion Spec
Database
Status
# of States
Completed/posted
30
Waiting only on final review/approval
before posting
13
Collected specs, in process of
compiling
2
Not yet started
5
Binder Spec Database Recently
Enhanced as Well
• New and Improved Format
– Completed for all 50 States (3 mb pdf files)
– More uniform template across all States
• PG Testing on Page 1
• PG+ Testing on Page 2
• Grey out tests that are not required
– Easier to maintain, better aesthetics and utility
– Vastly improved footnoting
Best Practices for
Constructing and Specifying
HMA Longitudinal Joints
A Cooperative Effort between
Asphalt Institute & FHWA
Longitudinal Joints are
Still a Challenge for Many Agencies.
Photo by
James Scherocman, P.E
Some States have more
Alaska
challenges than others!
Question?
“Is Oklahoma satisfied with the
long-term performance of your HMA
Longitudinal Joints?”
If the Answer is NO or not totally; then –
What can you do as an Agency?
What can you do as a Contractor/Industry?
What can you do as a Equipment Manufacturer?
What can you do as a Researcher?
The Weakest Link:
Poor Joint Performance is
an Agency and Industry
Concern
Longitudinal Joint Workshops (4-hrs)
FHWA/AI Cooperative Agreement
1-27-2014
NH
WA
MT
ME
VT
MN
ND
WV
ID
OR
(2)
SD
WI
RI
MI
PA
WY
IA
UT
IN
IL
NJ
MO
(2)
CT
OH
NE
NV
MA
NY
(2)
DE
MD
CO
KS
KY
DC
TN
NC
AR
CA
VA
OK
SC
AZ
NM
MS
AL
GA
LA
FL
PR
AK
TX
HI
AK
HI
Workshops Held (35 in 30 States)
Workshops Scheduled (3 States)
Expected Products or Outcome:
• Create Greater Awareness
• Improve Specs by Agencies
• Increase use of Innovative
techniques, equipment, and
materials
• Improve practices by Contractors
• Overall Improved LJ Performance
• Fewer incidences of shortened
pavement life
• Explain the WHY!
• Encourage CHANGE!
PA Story on Longitudinal Joint Density
Article in NAPA’s magazine, Asphalt Pavement, Sept/Oct 2012
http://www.nxtbook.com/nxtbooks/naylor/NAPS0512
• Increasing density was viewed as key
• 2007 - began measuring joint density
• 2008 - method spec. of best practices
• 2008 and 2009 - continued gathering data on joints
• 2010 - New joint density specification. Transition
year with no bonuses or penalties.
• 2011-2014 – bonuses and penalties on joint density
PA Joint Density Spec Highlights
• Both type of LJs allowed (butt or notch wedge)
• Joint Lot = 12,500’. Core every 2,500’. 5 cores per lot.
• Core location
o For Butt: directly over visible joint
o For Notch Wedge: middle of wedge
• Percent Within Limits (PWL)
• Incentive starts at 80% PWL
• Disincentive at <50% PWL
• Lower Specification Limit
o 2010-2013: 89% TMD
o 2014: 90% TMD
• Corrective action for < 88% TMD
PA: Impact on Lot Payment Summary
-$10,000
+$5,000
Disincentive
0
No Pay Adjustment
50
80
PWL
Incentive
100
PA: How Did it Work?
2013
162
91.6%
167
91.4%
94.0%
93.9%
PA: Statewide Pay Impacts Since New
Joint Density Spec (2011 - 2013)
2011
- $261,625 in bonuses
- $99,216 in penalties
2012
- $468,300 in bonuses
- $62,976 in penalties
2013
- $588,247 in bonuses
- $24,720 in penalties
PA: Corrective Action
• Lots with avg. density <88%
Gmm require corrective action
• Contractor must seal the joint
with PG 64-22 at no cost to
Department
• 10 lots required corrective
action in 2011
Laboratory Quality System
• New web-based software system for laboratory
accreditation with AASHTO
Asphalt Academy seminars
Binder Technology
Basic Binder Technician
Training
National Binder Technician
Certification Program
Mix Design Technology
Certification
Principles of Quality HMA
Pavement Construction
An Introduction to the Bailey
Method
Airport Pavement Workshop
Hot Mix Asphalt 101
AI’s Laboratory HVAC Replacement - 2013
• Project is complete
– Started May ‘13
– Resumed normal lab operations
in October ‘13
• Teaching lab – mix design,
binders, NBTC
• Research, commercial binder
testing
AI – Running Strong!
• Membership
– 128 members
– 95 % of liquid produced
in North America
– Voice of liquid industry
– Member engagement at
all time high
– Growing International
presence
2014 Asphalt Institute Members

similar documents