future of construction: intelligent compaction · intelligent compaction by dr. george k. chang,...

Future of Construction:Intelligent Compaction

ByDr. George K. Chang, PE

Director of Research, Transtec Group

Outlines

• Intelligent Compaction (IC) • Veta for Data Management• US National Implementation• Benefits of Using IC• Future Development and Further Information

Intelligent Compaction

OEM IC Systems

Example IC Retrofit System

GX-60

GPS Antenna

Infrared Temperature

Sensor

MCi-3 and Satel Radio

AccelerometerCourtesy of Topcon/RDO

控制系统 参数/指标

?

Control System ICMV

AccelerometerRoller Drum

Compacted Materials

Compaction &reaction force

correlation withmaterials modulus & density

Intelligent Compaction Measurement Values (ICMV)

Speed

FrequencyAmplitude

Vibration

Eccentric forces

ICMV

TemperatureMix proportioning

Soils type and Moisture Content

Support Condition

Various ICMVs

Asphalt Density vs ICMV (Stiffness)

GPS Validation AASHTO PP81 Diff < 6 in.

Temperature sensor validationAASHTO PP81 Diff < 5°F

Example IC Color-Coded Displays

Roller Passes Asphalt Temperature ICMV

Spot Tests and GPS Data

Daily Production Boundary

Alignment File – KMZ, LandXML

Courtesy of MnDOT

Veta for Data Management

Standard ICDM Software - Veta

17

IC/PMTP data

Spot test data

Data Export

Vendor’s cloud Server

ManualUSB

Manual

Automatic

USB, email, etc.

Vendor’s cloud Server

AutomaticWireless

Transmission

Manually “Push”

userlog-in for access

Project and Machines IDssetup

Ungriddedor gridded data files

Storage time

IC/PMTP data

Veta IC Analysis

20

IC Data Analysis

Veta Analysis – Coverage of Target Passes

Target ICMV from Trial Section Data

ICM

V

Target ICMV

Target % Gmm

% Gmm

PassingR > 0.7

OrR2 > 0.5

Target ICMV for QC

Optimal pass

Target ICMV

∆ICMV<5%

Veta Analysis – Coverage of Target ICMV

National Implementation

A BRIEF HISTORY OF IC IN US

2004 2006 2008 2010 2012 2014 2016 2018 2020

FHWA IC Road Map FHWA

IC Spec

AASHTO IC Spec

NOVA Award

HfL IC Study

TPF-5(128) study

EDC IC Support

IC & Asphalt Density Study

TPF-5(334) study

NCHRP21-09Study

NCHRP24-45Study

IC Retrofit Study

IC Retrofit Study

????

FHWA Tech Brief

US National IC Guide Specs

AASHTO PP 81-17 & Data Spec.FHWA Soils/Asphalt IC

US DOT IC Specs

CA

AZ

CO

NM

TX

OK AR

LA

MO KY

AL GA

FL

VA

OH

MI

VTAK

VI

MT

NV

Guam

MEWA

OR

UTKS

IDWY

ND

SD

MN

NE

WI

IAIL IN

MS

TN

SC

NC

WV

PA

NY

CTNJDEMD

PR

HI

NHMARI

Asphalt Soils

Asphalt + Soils

DC

No

US Dot IC projects

Limited survey 2017

MnDOT IC Implementation plan

2014(10%)

2015(10-15%)

2016 (40-50%)

2017 (50-75%)

2018(100%)

% of MnDOT Projects meeting project selection requirements.

Benefits of Using IC

15 ftJoint spacing

Centerline

HMA OverlayLift 1

Identify Underlying JointsPCC Joints CMV

Courtesy of MNDOT

Improved Rolling Pattern

After the Blind Test

TPF IC Study – IN Site

Courtesy of MNDOT

Improved Consistency

Improved Roller CoverageFirst Time Use of IC

Identify Causes of Failed Density

Turn off VibToo Early

ConsistentVib Thru Out

Courtesy of MnDOT

Failed

Passed

Future Development &Further Information

Level 1

ICMV Road Map

Level 2Level 3

Level 4Level 5

Advancements of ICMV

Artificial Intelligence

Continuous Compaction Control

AdvancedIntelligent

Compaction TechnologyAutonomous Roller

True Intelligent IC

TPF-5(334) ICDM-Veta Pooled Fund Study

Connected Sites

Courtesy of Trimble

IntelligentCompaction.com

IICTG.org

International Intelligent Construction Technologies Group

Thank You!

Dr. George K. Chang, PEDirector of Research, Transtec Group

GKChang@TheTranstecGroup.com

IntelligentCompaction.ComIntelligentConstruction.Com

IICTG.Org