Impact of Carbon Fibers on Mechanical and Durability Properties of Self-Compacting Concrete

Abstract

Self-compacting concrete is known for its performance in construction, as it minimizes the energy required to compact concrete, providing high strength. Improving the strength and durability parameters of self-compacting concrete is the main priority of modern research. The purpose of this research was to determine the optimal percentage addition of carbon fiber in self-compacting concrete with respect to the maximum positive variation that occurs in concrete strength and durability. Experimental results show that less carbon fiber in the slump affects the workability of the concrete as the slump diameter diminishes. Adding 0.8 percent carbon fiber reduces droop diameter. Addition of carbon fiber to self-compacting concrete decreases slump. The maximum carbon fiber content reduces the blockage ratio, meaning the concrete hardens as lumps emerge. Carbon fiber in concrete increases strength over time. The tensile strength of self-compacting concrete without carbon fiber is poor. The split test is comparable to the compression test. If just 0.6 percent of self-compacting concrete is reinforced with carbon fiber, the effect is positive. Concrete requires water absorption to develop. However, adding carbon fibers to self-compacting concrete limits water absorption. Adding carbon fiber minimizes absorption and hence increases concrete durability. The reported results also illustrate how carbon fiber might improve the resilience and resistance of self-compacting concrete in response to acid attacks, which can limit its service life.

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