PSI - Issue 2_A

Shaowei Hu et al. / Procedia Structural Integrity 2 (2016) 2818–2832 S. Hu et al./ Structural Integrity Procedia 00 (2016) 000–000

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Fig.1, the end reaction will balance out the vertical component of external load and deadweight, the force condition can simplified to a pair of reverse tensile force on the specimen. Fig.2 is the schematic diagram of compact tension specimen, compared with Fig.1 and Fig.2, we can find that the force situation of non-standard concrete wedge splitting tensile specimen and compact tension specimen is the same.

Fig.1 The schematic diagram of non-standard wedge splitting test specimen

Fig.2 The schematic diagram of compact tension specimen

Due to the geometrical characteristics and loading way of wedge splitting tensile specimen is the same as compact tension specimen, so we can calculate the fracture toughness IC K of wedge splitting tensile specimens by the formula for compact tension specimens. American Society for Testing and Materials (ASTM) obtained the