The objective of the study was to determine the effectiveness of dowel bar retrofitting of faulted PCC pavements by (1) modeling FWD Test data for computer model development and verification, (2) evaluating long term effects by simulating material degradation of the rigid pavement system, and (3) determining and classifying deficiencies and trends of the parametric study.
The results of the finite element analysis shows that remediation in the form of dowel bar retrofitting greatly reduces fault development. Use of a dowel bar significantly raised the stress concentration of the concrete at the dowel bar-concrete interface. However, these stresses are well below the levels that cause failure. Simulated degradation of the base course increased stresses in the dowel bar and concrete area. Pressure differentials in base course were reduced with use of a dowel bar. Recommendations for future analysis are also made.
November 1, 2007
Balasingam Muhunthan, Andrew T. Jennings.
Washington State Transportation Center (TRAC)
- # of Pages: 59 p., 1,616 KB (PDF)
- Subject: Dowels (Fasteners), Faulting, Finite element method, Load transfer, Measures of effectiveness, Portland cement concrete, Recommendations, Research, Retrofitting, Rigid pavements, Simulation.
- Keywords: Pavement, faulting, modeling, dowel bar, retrofit.
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This abstract was last modified April 29, 2008