PSI - Issue 13

Oldřích Sucharda et al. / Procedia Structural Integrity 13 (2018) 1533 – 1538 Sucharda O., Lehner P., Kone č ný P., Ponikiewski T./ Structural Integrity Procedia 00 (2018) 000–000

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Fig. 3. Load-displacement (LD) diagrams of result of numerical simulations and experiments results (red lines). (a) Variant A – 100 simulation; (b) Variant B – 40 simulation.

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Fig. 4. Load-displacement (LD) diagrams of result of numerical simulations and experiments results (red lines). (a) Variant C – 10 simulation; (b) Final identified fracture curve (blue line). The resulting identification of the fracture-mechanical parameters for samples from the experimental program is given in Fig. 4 b and Table 3. The load displacement diagram and the results of the three beam tests are shown. The LD pattern identified has a similar course to the laboratory test.

Table 3. Results of fracture properties.

Tensile splitting strength

Modulus of elasticity 39.73 GPa

Compressive strength (Cylinder)

Coefficient c 1

Coefficient c 2

Specific fracture energy

62.26 MPa

4.06 MPa

0.602

0.254

642 N/m

4. Conclusions The article presented a possible approach to identifying material characteristics of selected self-compacting concrete with a 1% of steel fibres KE20/1.7. The components of the identification were also the implementation of