Why Intelligent Compaction? Proper in-place density is vital for good performance Conventional...

Why Intelligent Compaction?

• Proper in-place density is vital for good performance

• Conventional compaction equipment and procedures have shortcomings and too often produce poor results

• Intelligent compaction technology appears to offer “a better way”

Conventional spot-testing

Troxler PQI/PDM

destructivespot-testing

Drill-core

Proportion of spot-testingto the quantities placed

1 : 1,000,000

non-destructivespot-testing

100 % Coverage

1 / 1,000,000

Courtesy of Trimble/Caterpillar

Sampling Coverage

Passes 431 2 5 6 7 8>8

Up to 15 passes

Up to 13 passes

1 pass

1-3 passes

Conventional rolling – passes

Specified:8 Passes

Achieved ∅:

5.7 Passes

HAMM Compaction Quality (HCQ)

IC Roller Requirements (FHWA)

• IC Measurement Value (ICMV)

• GPS-based documentation system

• On-board, color-coded display

• Surface temperature measurement system

HAMM Double Drum IC System

Accelerometer

GPS Receiver

HCQ GPS Navigator

Temperature Sensors Control Panel

HCQ-GPS Navigator

Components: HCQ-Box

CAT CMV, MDP

Dynapac CMVBomag EVIB Sakai CCV

Ammann kb HAMM HMV

Roller measurement values

Data Collection

Summary

– HCQ offers a valuable new tool to the Contractor and Agency to improve Quality Control and pavement service life• Improved density…. Better performance• Improve efficiency…. Cost savings

– Overall Benefit: Enables consistency and therefore provides Improved Pavement Performance!