Abstract
Fibers addition to concrete and the innovation of self-compacting concrete technology lead to the development of high-performance concrete. However, high intensity fire may adversely affect the performance of this type of concrete. A series of fire resistance test experiments to evaluate the performance of fiber reinforced self-compacting concrete (FR-SCC) slabs consisting of various mix of basalt and PVA fibers were carried out by subjecting the concrete slabs as an element of construction to high intensity Hydrocarbon fire heating condition. The fire testing condition was in accordance with the standard time-temperature fire curve for 120 minutes up to 1100°C heating temperature. The temperatures on the surface and within the concrete slabs were recorded and the performance of each type of FRSCC slabs were evaluated. The performance of Basalt FR-SCC was found to be more resistant to fire in comparison to PVA FRSCC. There residual compressive strength of core samples were tested and SEM analysis were carried out to determine the effect of high intensity fire on the basalt and PVA FR-SCC slabs.
Highlights
The revolutionary and innovative development of self-compacting concrete (SCC) or selfconsolidating concrete leads to saving in skilled labor cost and faster construction time [1]
The fire resistance performance of fiber self-compacting concrete (FRSCC) with 2.0% basalt fiber (Code Mix M7 2.0BF) demonstrated the best among all tested design mixes when subjected to Hydrocarbon fire
The polyvinyl alcohol (PVA) fiber reinforced self-compacting concrete (FRSCC) with 2% fibers (Code Mix M6 2.0PF) was found to have the least fire resistance performance compared to all FRSCC design mixes tested
Summary
The revolutionary and innovative development of self-compacting concrete (SCC) or selfconsolidating concrete leads to saving in skilled labor cost and faster construction time [1]. Modern application of high performance self-compacting concrete (SCC) is focused on high performance for better and more reliable quality, dense and uniform surface texture, improved durability, higher strength, and faster construction time. Improving concrete’s fire resistance is a field of interest for many researchers lately According to their studies, it is possible to improve fire resistance of concrete in few ways including the addition of fibers to fresh concrete [3]. Basalt and polyvinyl alcohol (PVA) fiber-reinforced self-compacting concrete (FR-SCC) have been shown to enhance the mechanical properties at ambient conditions [4]; but its performance as a structural construction element in fire is yet to be assessed. The post-fire effects to the FR-SCC of basalt and PVA fibers should be examined in order to assess the structural integrity of the FR-SCC which is the focus of this research
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