intelligent compaction state of the practices · 2020-07-23 · mobile app. outlines •development...

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

Thank You！

Dr. George K. Chang

Transtec Group, USA

President of ISIC

GKChang@TheTranstecGroup.com