Determining Tensile Strength of Rock by the Direct Tensile, Brazilian Splitting, and Three-Point Bending Methods: A Comparative Study

Figure 12

Development process of rock sample failure in direct tensile. (a) 64, 8.01 MPa. (b) 108, 8.25 MPa. (c) 207, 8.22 MPa. (d) 325, 7.54 MPa. (e) 430, 5.15 MPa. (f) 443, 2.84 MPa.

(a)

(b)

(c)

(d)

(e)

(f)