SYMPOSIA PAPER Published: 01 January 1994

Backcalculation of System Parameters for Jointed Rigid Pavements


A procedure has been developed to backcalculate parameters required for the mechanistic evaluation of jointed rigid pavements. The two paramters are the coefficient of dowel/concrete interaction (G), and the coefficient of subgrade reaction (k) in the vicinity of the joint. The procedure involves two primary steps. First, actual FWD tests are conducted at the joints of the pavement system, and the deflection transfer efficiency and the surface deflection under the FWD load are determined. Next, a finite element model of the pavement system is used to determine the relationship between deflection transfer efficiency and surface deflection. This relationship is developed for a range of G and k values, holding all other input parameters fixed. With the two FWD measurements and the theoretical relationship between the two, the G and k parameters can be determined for the pavement system under evaluation.

Author Information

Hiltunen, DR
The Pennsylvania State University, University Park, Pennsylvania
Roque, R
The Pennsylvania State University, University Park, Pennsylvania
Price: $25.00
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Developed by Committee: D04
Pages: 440–454
DOI: 10.1520/STP18163S
ISBN-EB: 978-0-8031-5267-0
ISBN-13: 978-0-8031-1865-2