Geo-Congress 2020
Evaluation of Correlations between Intelligent Compaction Measurement Values and In Situ Spot Measurements
Publication: Geo-Congress 2020: Geotechnical Earthquake Engineering and Special Topics (GSP 318)
ABSTRACT
Compaction is one of the most important operations in pavement construction. Poor compaction of base and sub-base can lead to various types of deterioration/failure, and consequently increase the cost of maintenance and rehabilitation. Non-uniformity and inconsistency of the compaction are the most prevalent problems associated with conventional compaction techniques. The density-based quality control (QC) and quality assurance (QA) practices for compaction evaluation (spot test measurements) only cover less than 1% of the compacted area. Therefore, there is a need for transitioning from a point-wise to system-wide inspection practices. Intelligent compaction (IC) is an innovative technology that can improve the uniformity and consistency of compaction and provide a system-wide stiffness-based inspection practice. The main objective of this study was to evaluate correlations between intelligent compaction measurement values and in situ spot test measurements. To this end, spot measurements were taken during IC operation in a reclaimed base project in Route 117, Vermont, and simple linear regression models were built to investigate the correlation between intelligent compaction measurement values (CMVs) and dynamic cone penetration index (DCPI)/nuclear gauge density (NGD)/pavement quality indicator (PQI)/core densities. The results indicated that the correlation between the CMVs and spot measurements was meaningful only in case of DCP tests performed during the initial reclaim phase. Different mechanisms for compaction quality measurement and variation of material properties throughout the project were the main reasons for the observed weak correlation.
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Information & Authors
Information
Published In
Geo-Congress 2020: Geotechnical Earthquake Engineering and Special Topics (GSP 318)
Pages: 602 - 611
Editors: James P. Hambleton, Ph.D., Northwestern University, Roman Makhnenko, Ph.D., University of Illinois at Urbana-Champaign, and Aaron S. Budge, Ph.D., Minnesota State University, Mankato
ISBN (Online): 978-0-7844-8281-0
Copyright
© 2020 American Society of Civil Engineers.
History
Published online: Feb 21, 2020
ASCE Technical Topics:
- Business management
- Construction engineering
- Construction management
- Correlation
- Engineering fundamentals
- Field tests
- Infrastructure
- Inspection
- Management methods
- Material mechanics
- Material properties
- Materials engineering
- Mathematics
- Pavements
- Practice and Profession
- Project management
- Quality control
- Statistics
- Tests (by type)
- Transportation engineering
Authors
Metrics & Citations
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