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Technologies Needed for Intelligent Compaction Rafiq Darji, P.E. Florida Division. Technologies Needed for IC. IC is nothing but adding Science to the Art of Compaction

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slide1

Technologies Needed for Intelligent Compaction

Rafiq Darji, P.E.

Florida Division

technologies needed for ic
Technologies Needed for IC
    • IC is nothing but adding Science to the Art of Compaction
  • Compaction is one of the most important processes in roadway construction. It is needed to achieve high quality and uniformity of pavement materials, which in turn better ensure long-lasting performance.
  • Pavement materials often possess optimum densities that ensure adequate support, stability, and strength. Achieving these uniformity is key.
technologies needed for ic1
Technologies Needed for IC
  • Current processes using conventional compaction machines may result in inadequate and/or non-uniform material densities, which can be one of the major factors that result in premature failure.
  • IC helps to overcome this.
technologies needed for ic2
Technologies Needed for IC
  • How IC Rollers Work:
    • IC machines are vibratory rollers with accelerometers mounted on the axel of drums, global positioning system, Infra-red temperature sensors (for asphalt), and on-board computers that can display color-coded maps in real-time to track roller passes, asphalt surface temperatures, and stiffness of compacted materials.
technologies needed for ic3
Technologies Needed for IC
  • Accelerometers or Continuous Measurement System
  • Temperature Gauge/Sensor
  • RTK (Real Time Kinematic) – GPS
  • Control Panel/Box (Real Time Display Panel)
technologies needed for ic4
Technologies Needed for IC

Onboard

Report

System

Global

Positioning

System

(GPS)

Continuous Measurement

System

Courtesy of Bomag

types of ic rollers
Types of IC Rollers
  • Single Drum Rollers: Primarily used for Soil Compaction
  • Double Drum Rollers: Primarily used for Asphalt Compaction
single smooth drum rollers
Single Smooth Drum Rollers

Photos courtesy of each company

Caterpillar

HAMM-Wirtgen

Ammann-Case

Dynapac

Sakai

Bomag

caterpillar soils ic system
Caterpillar Soils IC System

Photos courtesy of each company

Radio

GPS Receiver

Display

Controllers

Accelerometer

Slope Sensor

Courtesy of Caterpillar

double drum ic rollers
Double Drum IC Rollers

Photos courtesy of each company

HAMM-Wirtgen

Bomag

Caterpillar

Sakai

sakai double drum ic system
Sakai Double Drum IC System

Photos courtesy of each company

GPS Radio/Receiver

Control Panel

Temperature Sensor

Accelerometer

CIS Display

hamm double drum ic system
HAMM Double Drum IC System

Photos courtesy of each company

HCQ GPS Navigator

GPS Receiver

Temperature Sensors

Control Panel

Accelerometer

technologies needed for ic5
Technologies Needed for IC
  • IC Roller Requirements:
    • GPS – Based documentation system.
    • On – Board, Color –coded display
    • Surface Temperature Measurement System
    • IC Measurement Value (ICMV)
    • Optional: Automatic feedback system
rtk gps
RTK GPS

Photos courtesy of each company

Connected

by Radio Link

Roller GPS Radio/Receiver

GPS Base Station

GPS Rover

gps precisions
GPS Precisions
  • Autonomous:10 -15m
  • DGPS: 0.5 - 5m
  • Float : 1 m
  • Fixed :1-3 cm

Not to scale

Courtesy of Trimble

gps accuracy for ic
GPS Accuracy for IC

IC

Pass

Counts

4

3

2

1

Good GPS

Poor GPS

Unspecified Source

slide17

Roller Measurement Values

Photos courtesy of each company

Ammann

kb

Caterpillar

CMV, MDP

HAMM/Wirtgen

HMV

Dynapac

CMV

Bomag

EVIB

Sakai

CCV

test sections target values
Test Sections/Target Values
  • Dimensions of Test Sections
    • 75 m X 6 m for Soils
    • 300 – 500 Tons for HMA
  • Evaluations for Each Lift Materials with cores
  • Fixed Settings of IC Compaction
  • Determination of Target Roller Passes and IC-MV
ic retrofit
IC Retrofit

Presently only one manufacture who supplies retrofit equipment

Retrofit can be installed on any compactor from any manufacturer, used or new machines

Can be transferred between many machine types

retrofit single drum ic roller
Retrofit Single Drum IC Roller

Volvo with Trimble Retrofit

Photos courtesy of each company

retrofit double drum ic roller
Retrofit Double Drum IC Roller

Printer

Conventional Roller

with Trimble Retrofit

GNSS Receiver

Control Box

Temperature

Sensor

Temperature

Sensor

Courtesy of Trimble

sampling coverage
Sampling Coverage

1 / 1,000,000

100 % Coverage

Courtesy of Trimble/Caterpillar