Evaluating the Potential Use of a Portable LFWD for Characterizing Pavement Layers and Subgrades
Publication: Geotechnical Engineering for Transportation Projects
Abstract
An evaluation of the Light Falling Weight Deflectometer (LFWD) device to reliably measure the in-situ elastic modulus of pavement layers and subgrades is presented in this paper. For this purpose, field tests were conducted on selected highway sections from different projects within Louisiana. In addition, six test sections were constructed and tested at the Louisiana Transportation Research Center (LTRC) Pavement Research Facility (PRF) site. All sections were tested using the Prima 100 model - LFWD in companion with other standard tests including the Falling Weight Deflectometer (FWD) and the Plate Load Test (PLT) that were used as reference measurements. Regression analyses were conducted to determine the best correlations between the elastic modulus obtained from LFWD and those obtained from FWD and PLT tests. Good correlations were obtained, which demonstrated that the LFWD can be a promising device for in-situ characterizing of highway layers and subgrades.
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Information & Authors
Information
Published In
Geotechnical Engineering for Transportation Projects
Pages: 915 - 924
Copyright
© 2004 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Analysis (by type)
- Elastic analysis
- Elasticity and Inelasticity
- Engineering fundamentals
- Falling weight
- Field tests
- Gravels
- Infrastructure
- Load tests
- Material mechanics
- Material properties
- Materials engineering
- Mechanical properties
- Pavement condition
- Pavement deflection
- Pavements
- Regression analysis
- Statistical analysis (by type)
- Structural analysis
- Structural engineering
- Subgrades
- Tests (by type)
- Transportation engineering
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