山岳トンネル (3)

[VI-250] Relationship between frequency response characteristics and compressive strength of early age concrete on steel plate impacted by steel ball

*Kentaro OHNO¹, Atsushi UENO¹, Ko HIWATASHI¹, Noriyuki UTAGAWA², Shinya KITAGAWA², Takayuki YOSHINO² (1. Tokyo Metropolitan University, 2. Sato Kogyo)

Keywords:lining concrete, strength estimation, impact elastic wave method, centroid frequency, frequency response function