Is soft rock also non-abrasive rock? An evaluation from lab testing campaigns
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Rock and Fracture Mechanics in Rock Engineering and Mining 12/09/2022 - 15/09/2022 Helsinki, Finland. Vol. 1124 2023. 012019 ( IOP Conference Series: Earth and Environmental Science; Vol. 1124, No. 011001).
Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
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TY - GEN
T1 - Is soft rock also non-abrasive rock? An evaluation from lab testing campaigns
AU - Kaspar, Markus
AU - Latal, Christine
AU - Blümel, Manfred
AU - Pittino, Gerhard
PY - 2023
Y1 - 2023
N2 - Soft rocks are traditionally regarded in terms of low uniaxial compressive strength (UCS <25 MPa). However, other geomechanical and geological properties such as mineralogical composition, and microstructure should be considered when characterizing the properties of soft rocks. The term soft rocks includes a broad variety of rocks coming from various geological origins. Fabric and state of weathering control inherent anisotropic properties of strength and abrasivity of the various rock types. In this study, a suite of rocks from different geologic settings in the Austrian Alps and surrounding countries is analyzed to evaluate connections between the UCS, CERCHAR Abrasivity Index (CAI), and mineralogical composition (equivalent quartz content - FEQu) with emphasis on soft rocks. It is shown, that in order to assess the properties of soft rocks more accurately, the classification scheme can be expanded beyond the simple UCS approach by including mineralogical information and abrasivity values. This holistic approach more adequately captures the breadth of soft rock properties and allows a differentiated distinction of soft rocks in terms of strength and hardness.
AB - Soft rocks are traditionally regarded in terms of low uniaxial compressive strength (UCS <25 MPa). However, other geomechanical and geological properties such as mineralogical composition, and microstructure should be considered when characterizing the properties of soft rocks. The term soft rocks includes a broad variety of rocks coming from various geological origins. Fabric and state of weathering control inherent anisotropic properties of strength and abrasivity of the various rock types. In this study, a suite of rocks from different geologic settings in the Austrian Alps and surrounding countries is analyzed to evaluate connections between the UCS, CERCHAR Abrasivity Index (CAI), and mineralogical composition (equivalent quartz content - FEQu) with emphasis on soft rocks. It is shown, that in order to assess the properties of soft rocks more accurately, the classification scheme can be expanded beyond the simple UCS approach by including mineralogical information and abrasivity values. This holistic approach more adequately captures the breadth of soft rock properties and allows a differentiated distinction of soft rocks in terms of strength and hardness.
U2 - 10.1088/1755-1315/1124/1/012019
DO - 10.1088/1755-1315/1124/1/012019
M3 - Conference contribution
VL - 1124
T3 - IOP Conference Series: Earth and Environmental Science
BT - Rock and Fracture Mechanics in Rock Engineering and Mining 12/09/2022 - 15/09/2022 Helsinki, Finland
T2 - EUROCK 2022
Y2 - 12 September 2022 through 15 September 2022
ER -
