Correlation of the Road Rater and the Dynatest Falling Weight Deflectometer, MLR-91-04, 1991

(1991) Correlation of the Road Rater and the Dynatest Falling Weight Deflectometer, MLR-91-04, 1991. Transportation, Department of

pdf
Preview
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: http://publications.iowa.gov/id/eprint/19950