Journal Published Online: 11 May 2023
Volume 51, Issue 6

Verification of Flattened Brazilian Test on the Tensile Strength Determination of Layered Sandstone

CODEN: JTEVAB

Abstract

This study investigates the mechanical behavior of layered sandstone under flattened Brazilian disc (FBD) test conditions based on experimental studies and numerical simulations. The tests included 7 group specimens with different dip angles, namely 0°, 15°, 30°, 45°, 60°, 75°, and 90°. The load-deformation curves, failure modes, and tensile strengths are discussed and compared with the conventional Brazilian disc (BD) test results. The experimental results show that the FBD tests generally have two stages of failure modes. In the first stage, the load increases as the displacement increases until it suddenly decreases, with one major fracture occurring in the center of the disc. In the second stage, the load increases again until the specimen is destroyed via a complex fracture mode. Numerical simulations are utilized to analyze the fracture mode of the two stages, indicating that the fracture in the first stage is purely tensile. Hence, the maximum load in the first stage is recommended to estimate the tensile strength under the FBD test.

Author Information

Ou, Xuefeng
Industry Key Laboratory of Traffic Infrastructure Security Risk Management, Changsha University of Science & Technology, Changsha, Hunan, China
Zhang, Xuemin
School of Civil Engineering, Central South University, Changsha, Hunan, China
Feng, Han
School of Civil Engineering, Central South University, Changsha, Hunan, China
Ouyang, Linxu
Industry Key Laboratory of Traffic Infrastructure Security Risk Management, Changsha University of Science & Technology, Changsha, Hunan, China
Zhou, Xianshun
School of Civil Engineering, Central South University, Changsha, Hunan, China
Chen, Xinlei
School of Civil Engineering, Central South University, Changsha, Hunan, China
Pages: 14
Price: $25.00
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Stock #: JTE20220199
ISSN: 0090-3973
DOI: 10.1520/JTE20220199