Review article

https://doi.org/10.17559/TV-20170217110722

Estimation of Unconfined Uniaxial Compressive Strength Using Schmidt Hardness and Ultrasonic Pulse Velocity

Cengiz Kurtulus ; Kocaeli University, Umuttepe Campus, Engineering Faculty, Department of Geophysisc, 41380 Kocaeli/Turkey
Fadime Sertçelik ; President of Seismology Department, Kocaeli University, Umuttepe Campus, Engineering Faculty, Department of Geophysisc, 41380 Kocaeli/Turkey
Ibrahim Sertçelik ; Kocaeli University, Umuttepe Campus, Engineering Faculty, Department of Geophysisc, 41380 Kocaeli/Turkey

Abstract

Unconfined Compressive Strength (UCS) of the rocks plays a significant role in geotechnical and rock engineering projects. Due to difficulties UCS estimation is done using indirect methods such as Schmidt Rebound Hammer (RN) and Ultrasonic Pulse Velocity (UPV) tests that are quick and inexpensive tests. This study was performed to provide data consisting of correlations between RN versus UPV and UCS for rock materials. RN and UCS and UPV tests were carried out on 66 rock specimens from 6 different rock samples in the laboratory. Linear models were used for the relations between RN and UCS and UPV because R2 values of linear model is more suitable than non-linear models. The equations proposed in this study can be used easily for the areas formed of sandstone, limestone, arkoses, and granite to pre-estimate the UCS values of the rocks.

Keywords

geotechnical parameters; Schmidt Hardness; Uniaxial Compressive Strength; Ultrasonic Pulse Velocity

Hrčak ID:

207462

URI

https://hrcak.srce.hr/207462

Publication date:

28.10.2018.

Visits: 3.089 *