Abstract
The Small closely spaced and uniformly dispersed fibres in concrete greatly improve its mechanical and fire-resistant properties. This paper deals with experimental investigation of the performance of Hybrid Fibre Reinforced Concrete (HFRC) with carbon and steel wool fibres under different elevated temperatures. Five different fibre volume fractions between 0 and 1% were selected. The concrete cube specimens were casted with five combinations of carbon fibre (CF) and steel wool fibre (SW) and cured. The concrete cube specimens were exposed to three different temperatures (400 °C, 600 °C, 800 °C) and the thermal conductivity of the concrete cube specimen were measured using K-type thermocouple. Temperature exposed specimens were tested for compressive strength and compared with control specimen. The compressive strength of temperature exposed HRFC cube specimens are reduced due to the degradation of the cube specimen. The compressive strength test results were compared with control specimen to find the optimum fibre proportion in HFRC.
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