Abstract
When hybrid fibre Reinforced Ternary Blended (HFRTB) concretes were exposed to sustained elevated temperatures for three hours (SET-3hrs), the effect of two cooling regimes (sudden and gradual) was examined. At 100o C intervals, the temperature ranges from 100o C to 1000o C. Traditional concrete is compared to two ternary blended (TB) concretes (Cement + fly ash + GGBFS and Cement + fly ash + silica fume), as well as hybrid fibres (Galvanized iron + polypropylene). The specimens were put through a series of strength and durability tests, with slow cooling outperforming abrupt chilling.
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