Compressive strength of concrete with fibres at elevated temperature

Concrete,when exposed to high temperature,can cause spalling,cracking,and severe damage,which could lead to a sudden collapse of a building. one of the solutions for overcoming this weakness of concrete is by incorporating fibres in the concrete mix. concrete incorporated with more than one type of fibres is often known as hybrid concrete. in this paper,the compressive strength of the hybrid concrete when exposed to elevated temperature is studied. the result is compared to concrete mixed with a single type of fibre of polypropylene or steel fibres. an observation of spalling is also carried out to verify the compressive strength test. the test results showed that both the single fibre specimens with steel fibre and hybrid specimen improved by 23.34% and 24.60% in residual strength compared with other residual strengths of concrete specimens. © 2016 penerbit utm press. all rights reserved.