Understanding the Technology INTELLIGENT COMPACTION Jimmy Si, Ph.D., P.E. College Station, TX, Oct. 14, 2014
Understanding the Technology
INTELLIGENT COMPACTION
Jimmy Si, Ph.D., P.E. College Station, TX, Oct. 14, 2014
Table of Contents
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3 Why IC?
What is it?
What does IC provide us ?
How to use the IC information?
IC benefits
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5
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IC resources 10 6
Why Intelligent Compaction (IC)?
What are the key characters for a good soil and base compaction? – High Compressive/Shear Strength – High Stiffness/Modulus – Low Permeability – Low Swell/Shrink – Low Settlement – Uniformity and Consistency
Do we know for sure a good compaction has been achieved? Can we do a better job?
Blind vs. Intelligent Compaction
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GPS Receiver
Display Panel
What Is IC?
A vibratory roller equipped with a stiffness measurement system that continuously measures and reports the material’s stiffness in real time
A GPS-based documentation system that continuously records and reports the roller locations in real time
An onboard display panel showing a color-coded map of stiffness and roller’s locations in real time
Accelerometer
Available IC Rollers and Measurements
Caterpillar: CMV, MDP
Dynapac: CMV
Bomag: EVIB (MN/m²)
Sakai: CCV
Case/Ammann: kb (MN/m)
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Hamm: HMV
TxDOT IC Retrofit Kit
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Accelerometer
Receiver
Display Panel
IC Retrofit Kit
What information does IC provide us ?
Pass Counts Stiffness
Pass Counts
Stiffness
How to use the IC information?
Color-coded Map
Station Number
Density/Moisture
IC benefits
Provides uniformity information 100% coverage of the compacted area
Tracks roller locations and pass counts
Identifies areas of under/over compaction
Monitors compaction process in real time and improves productivity and minimizes cost
Provides performance-based info as a better link to mechanistic pavement design
Improves safety in construction zones
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IC resources