Current ASTM specification provide an approach for directly correlating attenuations of the bottom deck or the top rebar from ground penetrating radar (GPR) to deck condition when corrosion is the primary mechanism for concrete deterioration. In this study, GPR tests were conducted on the bridge decks in public service and the characteristics of signal attenuation were investigated with deck condition. As will be discussed, this approach is recommended for further evaluation and incorporation within ASTM D 6087-08.

• 이지영(한국도로공사 도로교통연구원) | Rhee, Ji Young
• 김홍삼(한국도로공사 도로교통연구원) | Kim, Hong Sam