intelligent compaction state of the practices · 2020-07-23 · mobile app. outlines •development...
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Intelligent CompactionState of the Practices
Dr. George K. Chang
Transtec Group, USA
President of ISIC
Outlines
• Development of IC Systems
• Current IC systems
• Applications of IC Systems
• IC Implementation in US
• Future IC Development
Outlines
• Development of IC Systems
• Current IC systems
• Applications of IC Systems
• IC Implementation in US
• Future IC Development
Intelligent Compaction
2007
1978
Continuous
Compaction
Control CCC
1960Vibratory Roller
1920
Gas Engine Roller
1860Steam Roller
2020+
Evolution of Roller and IC Technologies
First Generation of CCC
Intelligent Compaction
+ =
Soils IC vs. Asphalt IC
Outlines
• Development of IC Systems
• Current IC systems
• Applications of IC Systems
• IC Implementation in US
• Future IC Development
OEM Single Drum IC Systems
OEM Double-Drum IC Systems
Courtesy: Caterpillar
IC Components for OEM Steel Drum Roller
Courtesy: Caterpillar
IC Components for OEM Pneumatic Roller
IC Retrofit System for Single Drum Roller
Courtesy Trimble
Courtesy: Trimble
IC Retrofit System for Double Drum Roller
控制系统 参数/指标
?
Control System ICMV
Accelerometer
Roller Drum
Compacted Materials
Compaction &
reaction force
correlation with
materials modulus & density
Intelligent Compaction Measurement Values (ICMV)
Two accelerometer systems
One accelerometer systems
Level 3 ICMV
Mechanistic solutions based on static or dynamic
methods expressed in stiffness, reactional force, or
modulus
Level 5 ICMV
Mechanistic solutions based on dynamic
methods and artificial intelligence
expressed in density or modulus
Level 1-2 ICMV
Empirical solution based on frequency ratios
Empirical solution based on energy method and rolling
resistance
Level 4 ICMV
Mechanistic solutions based static method with
impact model expressed in reactional force or
modulus
Source: FHWA-HIF-17-046
ICMV Road Map
Level 1 ICMV - Empirical Reactive Model
f3f
A(f0)
A
f0 f1
CMV 20
f
A
f0
CMV 30
f1 f
A
f0
CMV ？
f1
A
f0
CMV 0
A(f0)
A(f1)
A(f0)A(f1)
A(f0)
A(f1)
e.g. CMV, HMV, CCV
Level 2 ICMV - Energy Model
OF
G
f 1=C1
f 2=C2
f 3=C3
f 4=C4h
e.g. MDP
Level 3 ICMV - Discrete Model
k1 c1
o
u1
m1
m2
u2
2 sinme t
Frame
Drum
o
u
M
2 sinme t
e.g. Kb, Evib, SineCore-3
Level 4 ICMV - Collision Impact Model
sinP t
Mg
F
oo
uF
Steel drum system
, ,u u u sinP t
e.g. SineCore-4
Vendor’s
cloud Server
Automatic
Wireless
Transmission
Manually
“Push”
user
log-in for
access
Project and Machines IDs
setup
Ungridded
or gridded
data files
Storage
time
IC/PMTP data
IC Data Management
Real-TimeMonitoringMobile App
Outlines
• Development of IC Systems
• Current IC systems
• Applications of IC Systems
• IC Implementation in US
• Future IC Development
Embankment and Subbase for Highways
TPF IC project at TxDOT
Subbase for Highspeed Railways
Courtesy Prof. G Xu
HMA/WMA for Highways
TPF IC project at MEDOT
Residential Asphalt Pavements
TPF IC project in CA
Mini IC Rollers for Municipal Works
Courtesy of BOMAG
IC Used in Earth Dam Construction
Source: Zhang et al., (2017)
ICMV Calibration Procedure
Courtesy: EU CCC/IC standard CEN (2016)
ICMV vs. Spot Tests
Correlation coefficient (R) ≥ 0.7 (R^2> 0.5)
ICMV Acceptance Rule
Courtesy: EU CCC/IC standard CEN (2016)
Confirmed Weak Area < 10%
Area ICMV-Target > 80%
ICMV STD < 20% in each pass
Outlines
• Development of IC Systems
• Current IC systems
• Applications of IC Systems
• IC Implementation in US
• Future IC Development
IC Activities in US
2004 2006 2008 2010 2012 2014 2016 2018 2020 +
FHWA IC Road Map FHWA
IC Spec
AASHTO IC Spec
NOVA Award
HfL IACA Study
TPF-5(128) Study
FHWA EDC IC Support
IC & Asphalt Density Study
TPF-5(334) Study
NCHRP 21-09 Study NCHRP 24-45 Study
IC Retrofit Study
FHWA ICMV Road Map
IC website
IICTG Founded
NRRA ICT
US DOT IC Specs
CA
AZ
CO
NM
TX
OKAR
LA
MOKY
ALGA
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
CT
NJ
DE
MD
PR
HI
NH
MA
RI
Asphalt
Soils
Asphalt + Soils
DC
No
Veta Supports MGA and GDA 2020
Many Systems ONE SOFTWAREMany Systems ONE SOFTWARE
Outlines
• Development of IC Systems
• Current IC systems
• Applications of IC Systems
• IC Implementation in US
• Future IC Development
Courtesy: Hamm
Integrate IC with Other Technologies
eTicketing
PMTP
IC
Level 3-4 ICMV
Accelerometer
GNNS
Management
Display
Transfer
GPS
……
CONTROL UNIT
Circuit board
SINE
CORE
PROCESSOR
Vendor’s
Onboard
Display
Vendor’s DAQ Unit
ICMV
Frequency
Amplitude
Roller Passes
Level 3-4 ICMV
Autonomous IC Rollers
Level 5 ICMV - Enhanced with AI
Further Information
IS-IC.org IntelligentConstruction.com
