Post-Fire Flexural Tensile Strength of Macro Synthetic Fibre Reinforced Concrete

Mechanical properties of macro synthetic fiber reinforced concrete at elevated temperatures: A systematic review and meta‐analysis

“…However, even with those results removed, the dispersion was quite large, so the studentized residuals were studied again and a further three results were deemed outliers and removed from the determination of the proposed relationship. These were the highest result from Mirza et al 40 and the lowest results from Alberti et al 54 …”

“…Outlier results were primarily from Thirumurugan, 40 whose study included styrene butadiene rubber latex at 7% by volume in all mixes that included MSFs. These results were all outliers on the high side, where increases in temperature did not seem to impact on the residual compressive strength, maintaining similar strengths at 800°C as they had in ambient conditions.…”

“…It must also be noted that the Mirza et al 40 study also had specimens with a temperature gradient, however, unlike the other studies where the temperature gradient within the specimen was provided, only the temperature on the specimen's surface was measured. Based on the temperature gradients noted in both Maluk et al 15 and Sukontasukkul et al, 52 it was decided to convert the surface temperatures provided in the Mirza et al studies into an average specimen temperature using Equation (). In terms of the f R1 results, it can clearly be seen that there are some outlying data points extracted from the Sukontasukkul et al study (i.e., the two highest results at 175–200°C).…”

“…Some studies purely studied the flexural strength of the MSFRC, 29,[42][43][44][45] while from others, the flexural strength was measured as part of the test measuring residual flexural tensile strength. 40,[46][47][48][49] As an example, Serafini et al 48 utilized EN 14651 beams in their research, where the f LOP data were extracted and utilized for comparison with the other studies' flexural strengths.…”

“…It is also for this reason that only the f R1 and f R4 values will be assessed in this study, with these values illustrated in Figures 11 and 12, respectively. It must also be noted that the Mirza et al 40 study also had specimens with a temperature gradient, however, unlike the other studies where the temperature gradient within the specimen was provided, only the temperature on the specimen's surface was measured. Based on the temperature gradients noted in both Maluk et al 15 and Sukontasukkul et al, 52 it was decided to convert the surface temperatures provided in the Mirza et al studies into an average specimen temperature using Equation (5).…”