PSI - Issue 11

Alisson Rodrigues de Oliveira Dias et al. / Procedia Structural Integrity 11 (2018) 84–90 Author name / Structural Integrity Procedia 00 (2018) 000 – 000

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Fig. 3. Influence of temperature on compressive strength, for fck types.

Fig. 4. UPV according to temperature, for each fck.

In the Tukey test perfomed for the type of fck it was verified that the value of the averages of reduction factor in UPV is different for each type, being the biggest reduction factor for the concrete of 20.0 MPa, according to Figure 4. In the combined effect of temperature – fck (Figure 5), the Tukey test showed that at the temperature of 200 °C with the exception of 20 MPa concrete mix, there is no significant difference between the averages of the reduction factors of UVP for the concrete of 30MPa, 40MPa and 50 MPa, for the other temperatures the averages are differents.