(1991) Correlation of the Road Rater and the Dynatest Falling Weight Deflectometer, MLR-91-04, 1991. Transportation, Department of
|
PDF
IADOT_mlr_91_04_Correlation_Road_Rater_Dynatest_Falling_Weight_Deflectometer_1991.pdf File Size:205kB |
Abstract
The Falling Weight Deflectometer (FWD) has become the "standard" for deflection testing of pavements. Iowa has used a Road Rater since 1976 to obtain deflection information. A correlation between the Road Rater and the FWD was needed if Iowa was going to continue with the Road Rater. Comparative deflection testing was done using a Road Rater Model 400 and a Pynatest 8000 FWD on 26 pavement sections. The SHRP contractor, Braun Intertec Pavement, Inc., provided the FWD testing. The r^2 for the linear correlations ranged from 0.90 to 0.99 for the different pavement types and sensor locations.
| Item Type: | Departmental Report |
|---|---|
| Keywords: | Correlation analysis, Deflection tests, Deflectometers, Falling weight deflectometers, Pavements, Road raters |
| Subjects: | Transportation > Pavements Transportation Transportation > Materials Transportation > Research |
| ID Code: | 19950 |
| Deposited By: | Iowa DOT Library |
| Deposited On: | 29 Jun 2015 16:44 |
| Last Modified: | 29 Jun 2015 16:44 |
| URI: | https://publications.iowa.gov/id/eprint/19950 |