asphalt issues aashto scoc virginia beach, va. by victor (lee) gallivan fhwa august 2, 2011
TRANSCRIPT
![Page 1: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/1.jpg)
Asphalt IssuesAsphalt IssuesAASHTO SCOCAASHTO SCOC
Virginia Beach, Va. Virginia Beach, Va.
By
Victor (Lee) Gallivan
FHWAAugust 2, 2011
![Page 2: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/2.jpg)
HMA Topics for the Day
• Reclaimed Asphalt Pavement (RAP)
• Updated Thin 4.75 mm surface mixture
• Construction Specifications for IC
![Page 3: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/3.jpg)
Recycled Materials SurveyRecycled Materials Survey
• Conducted through AASHTO SOM List Serve.• Sent end of December 2010.• Various questions related to RAP, RAS, RCA.• 45 state responses plus West Federal Lands and
Ontario.• Some data used is from 2007/2008 survey due
to lack of responses.
![Page 4: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/4.jpg)
Survey Survey (cont)
• Main Survey Questions• Allowance of recycled materials (RAP, RAS,
RCA) per specifications?• Contractors actual usage of recycled materials?• Special testing/handling procedures?• Research needs, major concerns/obstacles for
increased usage of recycled materials?
![Page 5: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/5.jpg)
RAP SurveyRAP Survey• Items of note from survey…
• RAP Availability – contractor/DOT ownership?
• WMA - Increased usage during DOT implementation?
• Stockpiles - Fractionation, captive stockpiles becoming more prevalent?
![Page 6: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/6.jpg)
RAP Survey RAP Survey (cont)
• Research Needs:• Needed dwell time for mixing?• Mix performance tests (long-term durability,
thermal cracking, f/t resistance).• Binders - bumping, blending,
stiffness/cracking, interaction with polymers.• Determining RAP binder properties.• Skid resistance.
![Page 7: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/7.jpg)
![Page 8: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/8.jpg)
![Page 9: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/9.jpg)
Since 2007/2008 Survey…Since 2007/2008 Survey…• RAP % allowed by percentage has stayed
pretty consistent for DOT’s.
• For RAP utilization by contractors, it appears the 20-30% usage has increased the most with all other percentages staying pretty much the same.
![Page 10: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/10.jpg)
RAS SurveyRAS Survey• Items of note from survey…
• Sources – pre/post consumer supply (about 50/50).
• Special Requirements – gradations, asbestos testing.
![Page 11: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/11.jpg)
RAS SurveyRAS Survey (cont)
• Research Needs• % binder contribution• Mix performance testing• Binder bumping, blending• Fatigue and low temperature cracking• Use in WMA?• Use of rejuvenators• Binder impacts
![Page 12: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/12.jpg)
![Page 13: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/13.jpg)
![Page 14: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/14.jpg)
HMA Topics for the Day
• Reclaimed Asphalt Pavement (RAP)
• Updated Thin 4.75 mm surface mixture
• Construction Specifications for IC
![Page 15: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/15.jpg)
![Page 16: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/16.jpg)
Thin Lift 4.75 mm HMA Mix
• AASHTO M 323 Revisions• Gradation• Lay thickness• Acceptance (no cores)
![Page 17: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/17.jpg)
Intelligent Compaction
Optimal pass
Target ICMV
DICMV<5%
![Page 18: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/18.jpg)
FHWA Generic IC Spec
SubbaseSoils
HMA
![Page 19: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/19.jpg)
Soils IC vs. HMA IC
• Soils IC• Moistures• Acceptance
• HMA IC• Temperatures• Acceptance
![Page 20: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/20.jpg)
Components of Standards
1. Approval of IC Equipment
2. IC Data Requirements
3. Quality Control Plan
4. GPS/Datum Requirements
5. Test Sections and Target Values
6. QC/QA for Production Areas
7. IC Data Submittal
8. Payment and Measurements
![Page 21: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/21.jpg)
1. Approval of IC Equipments
• Continuous Measurement System
• RTK GPS
• Onboard Reporting System
![Page 22: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/22.jpg)
2. IC Data Requirements
• Compatible with Standardized IC Software (Veda)
• Headers• Manufacturer• Machine Type• Machine Model• Drum Width• Drum Diameter• UTM Zone…..
• Data Blocks• Date/time stamp• Long/Lat• Easting/Northing• Pass Counts• Speed• Frequency• Amplitude• Temperatures• IC Measurement Values
![Page 23: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/23.jpg)
IC Analysis with Veda
![Page 24: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/24.jpg)
3. Quality Control Plan
• Contract-Specific Quality Control Plan (QCP)
• Signed by Contractors
• Accepted by DOTs
• Implementation of QCP• QCP Field Manager• Quality Control Technician
![Page 25: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/25.jpg)
4. GPS/Datum Requirements
• Datum Designation/Conversion
• GPS Checks
![Page 26: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/26.jpg)
GPS Checks
![Page 27: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/27.jpg)
5. Test Sections/Target Values
• Dimension of Test Sections• E.g., 75 m X 6 m for soils
• Evaluation for Each Lift Materials
• Fixed Settings of IC Compaction
• Determination of Target Roller Passes and IC-MV
![Page 28: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/28.jpg)
QC Target Values
Optimal pass
Target ICMV
DICMV<5%
![Page 29: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/29.jpg)
QA Target ValuesIC
MV
Target ICMV
Target % Gmm
% Gmm
![Page 30: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/30.jpg)
6. QC/QA for Production Areas
• Mapping of Existing Support
• QC for Production Compaction• Coverage• Percent Requirements Meeting Target
Values
• Acceptance for Production Compaction• Based on Agency’s Current Requirements
![Page 31: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/31.jpg)
Statistics of IC-MV
![Page 32: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/32.jpg)
7. IC Data Submittal
• Daily Data Submittal
• Native IC Data
• Exported IC Data• All Passes Data• Proof Data
![Page 33: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/33.jpg)
Courtesy of Bomag
![Page 34: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/34.jpg)
All Passes and Proof IC Data
Courtesy of Sakai
…………..
…………..
N
E
Pass No. =1
Pass No.=2
Pass No.=3321
Legend of Pass No.
IX X
VII VIII
V VI
III IV
I II
•I, V and IX are same coordinate.•I I , VI and X are same coordinate.•I I I and VI I are same coordinate.•IV and VI I I are same coordinate.
All passes data Proofing data only
![Page 35: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/35.jpg)
8. Payment and Measurements
• Lump Sum Payment• Itemized Payment
• Weekly IC Equipment Rental• Hourly Rate for Roller Operator
• Measurement• No. of calendar weeks roller furnished
• Unauthorized Work• Compacted materials are unauthorized without QC
data
![Page 36: Asphalt Issues AASHTO SCOC Virginia Beach, Va. By Victor (Lee) Gallivan FHWA August 2, 2011](https://reader036.vdocument.in/reader036/viewer/2022062322/56649c985503460f949540a6/html5/thumbnails/36.jpg)
Keys to Success
• Passion • IC Champions within Agencies
• Patience• It Takes Time!
• Communications• Among Agency, Suppliers, Contractors, and
Consultants
• Strategies• Start with Low-Hanging Fruits