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Accelerated Testing of Pavement with Embedded Dynamic Wireless Power Transfer Components
This thesis investigates the embedment of Dynamic Wireless Power Transfer (DWPT) components within two pavement test sections, aiming to evaluate their mechanical and thermal responses. The integration of DWPT components into the pavement structure, while enabling dynamic power delivery to EVs, alters the conventional geometric design of a typical pavement, potentially influencing their short-term and long-term durability and integrity. Hence, to ensure the integrity and efficiency of both the embedded system and the surrounding structure, it is essential to understand how integrating these components influence the pavement's performance.
Conducted at the Accelerated Pavement Testing (APT) facility of the Indiana Department of Transportation (INDOT), the study evaluates over the course of 25,000 APT traffic passes, the mechanical and thermal responses of both, a flexible and rigid pavement test section. Each test section features a Charging Unit (CU), a concrete slab upon which the DWPT components are placed. The construction of the flexible pavement involved milling down 2 in. of the existing pavement surface, while the rigid pavement required complete demolition of the existing pavement. The flexible pavement’s CU is composed of Class A concrete and the rigid pavement's CU features magnetizable concrete, a type of concrete composed of ferrite particles embedded in a cement matrix. Among the two pavement sections, only the rigid pavement exhibited visible distress, identified as a mid-panel crack. Several factors contributed to the crack formation, including inadequate adhesion between concrete interfaces, concrete mix segregation, material variations, construction issues, and nonuniform load distribution. The manual construction procedures, which were employed to prevent disrupting the embedded DWPT components and sensor instrumentation, and the one-week gap between casting the CU and the surrounding slab might have further influenced the adhesion strength of the rigid pavement section.
By examining the construction techniques employed, challenges encountered, and resulting behavior of both pavement test sections, this study provides insights into the construction and performance implications of DWPT component integration into pavements, as evidenced by the responses observed in the test sections. This thesis thereby contributes to the ongoing research efforts on investigating the impact such integration has on the surrounding structure's integrity.
NSF Engineering Research Center for Advancing Sustainability through Powered Infrastructure for Roadway Electrification (ASPIRE)
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- Master of Science in Civil Engineering
- Civil Engineering
- West Lafayette