Related Experiment Video
Updated: Oct 19, 2025

Stress Distribution During Cold Compression of Rocks and Mineral Aggregates Using Synchrotron-based X-Ray Diffraction
Published on: May 20, 2018
Size effect of parallel-joint spacing on uniaxial compressive strength of rock
Gaojian Hu1,2,3, Gang Ma1
1School of Civil Engineering, Shaoxing University, Shaoxing, Zhejiang, China.
Abstract:
The existence of parallel joints has an impact on the size effect of the uniaxial compressive strength of rock, but the relationship is yet to be obtained. In this paper, the influence of parallel-joint spacing on the size effect and characteristic size of rock uniaxial compressive strength is studied by establishing five types of parallel-joint-spacing simulation schemes. The influence of parallel-joint spacing on the size effect of rock uniaxial compressive strength is explored by analyzing the stress-strain curves of rocks with different parallel-joint spacings and rock sizes. The relationship between the uniaxial compressive strength and the size of the rock with parallel joints and its special mathematical model are obtained, and the particular form of the compressive-strength characteristic size and parallel-joint spacing is obtained.
More Related Videos
Related Concept Videos
Relation Between Tensile Strength and Compressive Strength of Concrete
Behavior of Concrete Under Compressive Load
As the concrete specimen fractures under...
Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity
Normal Strain under Axial Loading
Tensile Strength Considerations of Concrete
The dimensions and shape of a concrete specimen...
Strength of Cement
For compressive strength tests, ASTM C 109-05 standards prescribe a cement-sand mix ratio of 1:2.75 and a water/cement ratio of 0.485 for making 2-inch cubes. These cubes are mixed, cast, and cured in saturated lime water at 23°C until testing. Flexural strength testing, outlined in...

