The collapse of the structures may be initiated by fire, which is considered one of the
most severe risks. However, there are several conditions in which structures may be exposed to
elevated temperatures such as nuclear applications; factory procedures; and fires in tunnels or
buildings due to accidents or terrorist attacks. Recently, Self-Consolidating Concrete (SCC) has
become more broadly used, and there is thus a need to recognise its behaviours when subjected
to elevated temperatures, particularly in terms of sustainable SCC. Seven sustainable SCC mixes
were thus investigated in this study, each incorporating certain green materials (Portland
limestone cement, high volume Class F fly ash, and locally available cement kiln dust (CKD)).
All mixes were subjected to temperature levels of 200 °C, 400 °C, 600 °C, and 800 °C for two
hours and cooled to room temperature either slowly (air cooling) or rapidly (water cooling). The
residual (compressive, splitting, and flexural) strengths and modulus of elasticity were
calculated. The results indicated that SCCs with high volumes of Class F fly ash showed the
best performance when subjected to elevated temperature.
فائق محمد سرحان محمد الزويني | Faiq M. S. Al-Zwainy | 8329