Article : texte imprimé

Nongrouted ratio evaluation of rock bolts by reflection of guided ultrasonic waves

Jung-Doung Yu, Auteur ; Myeong-Ho Bae, Auteur ; In-Mo Lee, Auteur |

Dans Journal of geotechnical and geoenvironmental engineering (Vol. 139 N° 2, Février 2013)

The objective of this study is to develop and apply reflection methods for guided ultrasonic waves used in evaluating the grout condition of rock bolts installed in a rock mass. Three types of rock bolts with different grouting ratios are prepar[...]

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