Download - Lee Gallivan
California Intelligent CompactionDensity Evaluation Summary
California Asphalt Paving AssociationSacramento, California
Victor (Lee) Gallivan – FHWAAsphalt Pavement Engineer
Office of Asset Management, Pavement and Construction
October 24, 2013
What is Intelligent Compaction?
What is Intelligent Compaction?
An Innovation in Compaction Control
---Definition---
What is “Intelligence?”– Oxford Dictionary: “…ability to vary
behavior in response to varying situations and requirements”
– Ability to:• Collect information• Analyze information• Make an appropriate decision• Execute the decision Oxford
3000-4000 TIMES A MINUTE
Intelligent Compaction Includes
ContinuousMeasurement
System
GlobalPositioning
SystemGPS
Onboard Report System
Courtesy of Bomag
TemperatureSensors
What is Intelligent Compaction?
Vibratory Single Drum Soil Roller
Vibratory Tandem Drum Asphalt Roller
Current IC technology is accelerometer-based.
What is Intelligent Compaction?
IC Vibratory Roller Requirements– Accelerometers mounted in or about the drum to monitor
applied compaction efforts; – Real Time Kinematics (RTK) or Virtual Reference System
(VRS) GPS system for roller positioning measurement computer systems;
– Integrated measurement computer systems to collect & analyze roller and pavement response information;
– GPS-Based documentation system– On-Board, Color-coded display– Surface temperature instrumentation (HMA) system
Tandem Drum IC Roller Suppliers
Bomag
Caterpillar Sakai
HAMM-Wirtgen
IC Measurement Value (ICMV)
ICMV is a generic term used to describe all suppliers’ measurement value
IC suppliers have various “stiffness” (or measurement) values– Bomag – Evib (MN/m²)
– Caterpillar/Trimble – CMV– Hamm/Wirtgen – HMV– Sakai - CCV
VEDA 3.0 (Software)
Global Positioning System (GPS)
GPS Base Station GPS Radio & Receiver GPS Rover
Real Time Kinematic (RTK) GPS Precision
Intelligent Compaction Goals 2007
Short Term Goals Improved Density
More Uniform Density
More efficient compaction process
Operator Accountability
Correlate Measurements with Field Densities
Real-time Density Control (QC)
Long Term Goals
Compaction Control Specifications
Real-time Density Acceptance
Future Goals
Tie to Design Guide (verify design)?
Performance specifications?
FHWA Pooled Fund IC Project 2008-2011Demonstrate HMA IC Technologies to
Agencies and IndustryDevelop Experience and Expertise
within DOT OrganizationsAssist the DOT’s in the development
of Quality Control SpecificationsIdentification and prioritization for
further research and data analysis
FHWA IC Field Demo2008-2011
CA
AZ
CO
NM
TX
OK AR
LA
MO KY
AL GA
FL
VA
OH
MI
VTAK
VI
MT
NV
Guam
ME
WA
OR
UT
KS
IDWY
ND
SD
MN
NE
WI
IA
IL IN
MS
TN
SC
NC
WV
PA
NY
CTNJDEMD
DC
PR
HI
FHWA TPF
HfL/SHRP2
FHWA IC-HMA Density Study2011-2014Relate IC measurement and other
records to HMA in-place densityImprove usage of IC for QC
ICMV
ICMV Target
ICM
V
Target ICMV
Target %Gmm
Coring
Coring
FHWA IC Density Evaluation 2012-2014
CA
AZ
CO
NM
TX
OK AR
LA
MO KY
AL GA
FL
VA
OH
MI
VTAK
VI
MT
NV
Guam
ME
WA
OR
UT
KS
IDWY
ND
SD
MN
NE
WI
IA
IL IN
MS
TN
SC
NC
WV
PA
NY
CTNJDEMD
DC
PR
HI
201220132014
NHMARI
100 % coverage
1 / 1,000,000
Courtesy of Caterpillar
Inconsistent Roller Coverage
Longitudinal Joint
Shoulder (Supported)Paving Direction
California Paving Project - 2006
Courtesy Sakai America
Improved Rolling Patterns Before
After
Sakai IC roller
Indiana ICPF Project
Benefits of IC
Improve compaction…better performance
Improve efficiency…cost savings
Increase information…better QC
CA IC Demo Project
I-80, Vacaville and Dixon, CA Teichert Construction - North Region *** Sept. 4-6, 2013 Night paving 3” Intermediate
Course
*** California License # 8, the oldest active license (125 years) in the state.
TB01BLane 2
TB01ALane 1
TB02EB Lane3
MTV Paving
Hamm IC compaction Caterpillar IC compaction
Bomag IC compaction NG and temp measurements
1500
ft
paving width
Roller 2IC Compaction
(breakdown)
NG, LWD-a(after each pass)
and GPS
paving width
Roller 1IC Compaction(intermediate)
paving width
50 ft spacing
NG, GPS, Coring
LWD-a, FWD, GPR
Roller 3Compaction(finishing)
FWD test NG and Temp measurements
Coring Core
Open house audienceOpen house audience
Host – Chuck Suszko, Caltrans Speaker – Lee Gallivan, FHWA
Hamm IC Data (Night 1)
HMV
Temperature
Pass count
CAT IC Data (Night 2)
CMV
Temperature
Pass count
Bomag IC Data (Night 2)
Evib
Temperature
Pass count
Compaction Curves
120
140
160
180
200
220
240
260
280
300
0 1 2 3 4 5 6
Temperature (°F)
Passes
70
75
80
85
90
95
0 1 2 3 4 5 6
NG (%Gmm)
Passes
Hamm Bomag paver Hamm Bomag paver
TB01 Pass-by-Pass IC data vs. NG Density
T1
Compaction Curves
120
140
160
180
200
220
240
260
280
300
0 2 4 6 8 10 12
Temperature (°F)
Passes
70
75
80
85
90
95
0 2 4 6 8 10 12
NG (%Gmm)
Passes
Hamm/Cat Bomag paver Hamm/Cat Bomag paver
CH H
C H
CH H
CH
TB01 Pass-by-Pass IC data vs. NG Density
T2
Compaction Curves
120
140
160
180
200
220
240
260
280
300
0 2 4 6 8 10
Temperature (°F)
Passes
70
75
80
85
90
95
0 2 4 6 8 10
NG (%Gmm)
Passes
Cat Bomag paver Cat Bomag paver
TB02 Pass-by-Pass IC data vs. NG Density
T3
Major Findings
IC improve consistent rolling patterns – esp. night paving
IC is proven for QC IC is not for acceptance – at least for now GPS is still a challenge IC training is crucial for success
New and Exciting FHWA Initiative
“Advancement of Innovative Asphalt Technology”
Contractor: NAPA (Dr. Audrey Copeland)
Period: 5-years (Starting October 2013)
Effort: Conferences, Seminars, Webinars, FHWA Technical
Information, Best Practice Guides, News Articles, etc.
Scope: Recycling Materials, In-Place Recycling Technologies,
Asphalt Pavement Materials (HMA, WMA, SMA, etc.) Designs
and Construction Activities including Longitudinal Joints,
Asphalt Materials compaction , Intelligent Compaction (IC),
etc.
IC STANDARDS
2014 AASHTO Ballet distributed (September 2013) for a new provisional standard based on the FHWA IC Generic Specifications.
Federal Legislation - MAP-21
Moving Aheadfor Progress in the 21st Century Act’’ or
just ‘‘MAP–21’’
SEC. 1304. INNOVATIVE PROJECT DELIVERY METHODS
(3) INNOVATIVE PROJECT DELIVERY
Permits up to 100% Federal funding, e.g. Intelligent Compaction & In-place recycling technology
www.IntelligentCompaction.com
IC is a Beautiful Thing! (Alaska)
Courtesy of Bruce Christianson
Thank you…For More Information…
Victor (Lee) Gallivan, PEAsphalt Pavement Engineer
[email protected]: 317-226-7493Cl: 317-605-4704
The secret of a good sermon/presentation is to have a good beginning and a good ending, and to have the two as close together as possible: George Burns