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Advances in Civil Engineering
/
2019
/
Article
/
Tab 1
/
Research Article
An Experimental Study of the Uniaxial Failure Behaviour of Rock-Coal Composite Samples with Pre-existing Cracks in the Coal
Table 1
Mechanical properties of standard pure coal and rock samples [
21
].
Group
Uniaxial compression strength (UCS)
Elastic modulus
Poisson’s ratio
Standard pure coal sample
109.3 MPa
6.64
0.194
Standard sandstone sample
39.4 MPa
2.67
0.232