In this study, the applicability of impact-echo method for assessment of residual strength of fire-damaged concrete is investigated. A series of standard fire test is performed to obtain fire-damaged concrete specimens. Impact-echo tests are executed on the specimens and the responses are analyzed. Compressive strengths of the fire-damaged concrete are evaluated and correlated with the ultrasonic wave velocities determined from the impact-echo responses. The effectiveness of impact-echo based ultrasonic wave velocity measurement for assessment of residual strength of fire-damaged concrete is discussed.

• 신성우(정회원, 부경대학교 안전공학과 부교수, 공학박사) | Sung-Woo Shin
• 김승용(정회원, 한화건설 기술연구소 선임연구원, 공학석사) | Seung-Yong Kim
• 김정수(정회원, 한화건설 기술연구소 선임연구원, 공학박사) | Jeong-Su Kim 교신저자