This paper presents the results of experimental testing on steel fibrous concrete cylinder specimens after being burned for a certain period of time. The purpose of this research is to explore and develop an analytical expression on the stress-strain behavior of steel-fiber concrete by considering various variables. Precisely, the variables reviewed are the compressive strength of concrete which is defined as concrete with normal-strength, medium-strength and high-strength; the volume of fiber fraction in the concrete, namely 0%, 1% and 2%; and burning time for 1 hour, 2 hours and 3 hours. All cylindrical specimens measuring 100 x 200 mm were tested against uniaxial loads. The experimental results showed that all the fiber-free specimens had experienced a decrease in strength with increasing firing time. Normal-strength concrete specimens lose strength by 30-Kata kunci :

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