Development of interlocking concrete pavement crosswalk performance models

The paper "Development of Interlocking Concrete Pavement Crosswalk Performance Models" describes a research study which involves the two way partnership of Centre for Pavement and Transportation Technology (CPATT) located at University of Waterloo and Interlocking Concrete Pavement Institute (ICPI) to quantify the structural performance of four interlocking concrete pavement designs under two loading scenarios. Primarily loaded garbage trucks of maximum load up to 56,000kg are experienced at test track and ring road faces the traffic volume as typical urban road. There are eight crosswalks of four different designs in these two locations. Sand Set Concrete Base Concrete Headers (SSCBCH) is one of the designs. Similarly, the combination of asphalt base, granular base and steel header, aluminum header are other designs of the crosswalks. Strain gauges, Moisture probes, Earth pressure cells and thermistors are installed in the crosswalks to monitor the structural and environmental impact upon various loading. Continuous monitoring of the installed sensors and other kinds of surveys is going on to reach the goal of the research. Bituminous Set Concrete Base Concrete Header (BSCBCH) design has outperformed all others. Initial life cycle cost analysis for the period of 40 years is also carried out. BSCBCH is the most expensive design in terms of preliminary cost analysis for the period of 40 years and Sand Set Granular Base Concrete Header shows overall excellent performance. This paper presents the performance model of the crosswalks from completion of construction to date.