Mechanistic Analysis of Factors Leading to Punchout Development for Improved CRCP Design Procedures
The design of continuously reinforced concrete pavements (CRCP) has traditionally focused on the design of the steel reinforcement relative to the development of the crack pattern but with little emphasis on how characteristics of the crack pattern influence pavement performance. Recent developments associated with the mechanistic-based 2002 Design Guide (under development in NCHRP Project 1-37A) have further reinforced the importance of mechanistic relationships between the design parameters and pavement response to enable pavement performance predictions. To enhance the predictability of CRCP performance, a mechanistically sound relationship that relates the design parameters of crack spacing distribution, crack width, load transfer efficiency of the transverse cracks, and support conditions to pavement structural response needs to be incorporated in the design procedure. The results of this effort would benefit the development of a comprehensive mechanistic-based design procedure for CRCP.
Presented at the 7th International Conference on Concrete Pavements in 2001.
Authors: Olga I. Selezneva, Dan Zollinger, and Michael Darter