Divided into 4 sessions and one panel workshop/discussion on issues related to standardization of backcalculation procedures. The papers presented focus on the area of backcalculation of layer moduli techniques and comparisons of material moduli as measured in the laboratory to values calculated from field deflection measurements. Information from these papers and discussions were used to establish whether a backcalculation procedure could be standardized based upon the current state-of-the-art technology. Provides readers with much of the latest information in the areas of pavement evaluation using NDT techniques, and application of that data for use in pavement design.
In 5 sections:
Measurement and calculation Techniques in the Field and Laboratory
Problems/errors Associated with Backcalculation Methods and Design Parameters
NDT for Other Pavement Uses
Proposed Standard Guide.
SHRP's Layer Moduli Backcalculation Procedure
Jordahl P., Rada G., Richter C.
A Methodology to Identify Material Properties in Pavements Modeled as Layered Viscoelastic Halfspaces (Theory)
Lytton R., Magnuson A., Stubbs N., Torpunuri V.
Backcalculation of Pavement Layer Moduli, Thickness and Stiff Layer Depth Using a Modified Newton Method
Baladi G., Harichandran R., Mahmood T., Raab A.
Dyanamic Analysis of FWD Loading and Pavement Responce Using a Three Dimensional Dynamic Finite Element Program
Coree B., Drnevich V., White T., Zaghloul S.
Verification of Pavement Responce Models
Krarup J., Ullidtz P., Wahlman T.
Field Validation of a Hethodology to Identify Material Properties in Pavements Modeled as Layered Viscolastic Halfspaces
Lytton R., Magnuson A., Stubbs M., Torpunuri V.
Comparing Laboratory and Backcalculated Layer Moduli on Instrumented Pavement Sections
Akram T., Scullion T., Smith R.
In Situ and Laboratory Characterization of Nonlinear Pavement Layer Moduli
George K., Uddin W.
A Pavement Evaluation Procedure Incorporating Material Non-Linearity
Brown S., de Almeida J., Thom N.
Effect of Material Stress Sensitivity on Backcalculated Moduli and Pavement Evaluation
Coetzee N., Mahoney J., Stubstad R.
Misleading Results from Nondestructive Testing-A Case Study
Hall J., McCaffrey P.
Stochastic Analysis of Errors in Remaining Life Due to Misestimation of Pavement Parameters in NDT
Ferregut C., Nazarian S., Vennalaganti K.
Interpretation of Dynamic Survey Measurement on Pavement with Treated Roadbase
Caprioli P., Lepert P.
Phase LAG Effects on Analysis of FWD Data
Holikatti S., Sebaaly P.
Effects of Pavement-Falling Weight Deflectometer Interaction on Measured Pavement Response
Boddapati K., Nazarian S.
Radar for Pavement Thickness Evaluation
Fernando E., Maser K., Roddis W., Scullion T.
A Comparison of Laboratory and Field Sdbgrade Moduli at the Minnesota Road Research Project
Lenngren C., Newcomb D., Van Deusen D.
Backcalculation of System Parameters for Jointed Rigid Pavements
Hiltunen D., Roque R.
Evaluation of Support Conditions Under Jointed Concrete Pavement Slabs
Crovetti J., Tirado-Crovetti M.
Determination of Voids Under Rigid Pavements Using Impulse Response Method
Baker M., Nazarian S., Reddy S.
Evaluation of NDT Equipment for Measuring Voids Under Concrete Pavements
Hudson W., Uddin W.
The Quest for a Standard Guide to NDT Backcalculation
May R., Von Quintus H.
Paper ID: STP1198-EB