## 1 Introduction
However, the indirect strain decreases more quickly for SCC + PPF than SCC when temperature is increased. [PERSON] et al. [11] investigated the effects of steel fiber content on the biaxial stress behavior of steel fiber self-compacting concrete. They found that one percent fiber volume content in SCC showed the highest increments in biaxial compression and compression-tension, which were 55% and 84%, respectively, when compared to plain concrete. They attributed the improvement due to the integration of steel fiber. [PERSON] et al. [12] found that using Alkali-Resistance glass fiber and crimped type steel fiber in SCC significantly improved the SCC compressive strength under high temperature (up to 500 \({}^{\circ}\)C). [PERSON] et al. [13] tested large scale flat slabs (\(3.78\times 4.75\) m) under standard fire complying to ISO 834. The research aimed to modify the cover requirements under specified fire rating as specified in the design codes and standards. The slab was made of concrete containing 1% poly fibers and achieved a compressive strength of 39 Mpa after 28 days curing. During testing, the slab was partially restrained at the ages. The study reported that the 180-mm thick slabs and the cover to steel reinforcement that were kept at 35 mm sustained more than two hours of fire exposure, whereas the prevailing codes have specified 200 mm slab thickness with 35 mm cover depth for a two-hour fire rating. The transmission of heat inside the concrete depends on various properties of concrete. With the advancement in the composition of concrete and its physical and mechanical properties, it is anticipated that the coefficient of thermal conductivity of concrete would have been significantly changed. [PERSON] et al. [14] presented a review of the thermal conductivity of concrete. The review has indicated that various factors control the thermal conductivity of concrete. In modern concrete, various types of phase change materials such as fibers in concrete also affect the thermal properties. It has been argued in many research studies that high-performance concrete is one of the solutions for meeting the new challenges faced by the global construction industry. Fiber-reinforced self-compacting concrete is considered in the category of high-performance concrete; however, very little research is available in the literature as reported after an extensive review made by [PERSON] et al. [15]. All previous studies showed that research on fiber-reinforced used steel and GFRP fibers as the popular types for investigating the effects of curing conditions and the density of concrete. In contrast, many types of fibers, such as PVA and basalt, are also available on the market. Similarly, [PERSON] and [PERSON] [16] discussed the possibility of adding waste plastic fibers in the self-compacting concrete. As seen, past research on FR-SCC behavior under high temperatures found that the strength of FR-SCC may be affected by the type of fiber used. However, and to the authors' best knowledge, minimal research has been done on the effect of fire on FR-SCC strength, which is very important and benefits buildings, researchers, and designers. Hence, the principal aim of this research was to assess the strength and thermal performance of FR-SCC (FR mixed with PVA and basalt fibers) subjected to hydrocarbon fire conditions. For that purpose, a simulated hydrocarbon regime was developed using standard hydrocarbon fire curves. The effects of hydrocarbon fire on the compressive and split tensile strength of FR-SCC and plain SCC was investigated in the simulated condition. Hydrocarbon fire was used because some industrial buildings may contain hydrocarbon fuels that make concrete exposed to hydrocarbon fires. The study is significant for the application of fiber reinforced concrete for various kinds of retrofitting and repair jobs, such as bridge decks and process industry floors, which have a high risk of being exposed to the hydrocarbon fire.