A note on the strength and deformation properties of a some sandstone under three-point bending in the context of tension and compression behaviour

Mining of Sustainable Development

生态环境科学

Tomiczek, K.^1

Silesian University of Technology, Faculty of Mining and Geology, 2. Akademicka Street, Gliwice

PL-44-100, Poland^1

关键词: Compressive tests;    Direct tensile test;    Elasticity moduli;    Strength and deformation properties;    Tension and compression;    Three point bending;    Three-point bending test;    Uniaxial tensile;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/261/1/012055/pdf
DOI  :  10.1088/1755-1315/261/1/012055

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The results of the three-point bending test of the Brenna sandstone beam samples are presented. The values of strains at the peak strength of the tensile part was xmax, the strength of three-point bending was σb and the modulus of longitudinal elasticity (of the tensile part) was Eb- A ll of these values were indicated. The values of constants obtained in the three-point bending tests were compared with those obtained in the uniaxial tensile and compressive tests and the Brazilian tests. For this typical sandstone, values of constants determined by the three-point bending tests are greater than those determined by the direct tensile tests. There were stated large differences in the tensile strength values (σb/σT3) and relatively small differences in the elasticity modulus E (Eb/ET 1.2).