Aggressive Environments’ Effect on HPC Reinforced with Building Waste Steel Fibers.

Abstract

Durability refers to concrete’s ability to withstand deterioration from its surrounding environment. It is important to note that concrete durability encompasses not only its mechanical resistance but also its resistance to aggressive environments. This research paper investigates the chemical and mechanical durability of high-performance concrete reinforced with waste steel fibers. Concrete  pecimens were immersed in 5% HCl and MgSO₄ solutions for 90 days, while control samples were stored in water for comparison. The  esults show that specimens immersed in water exhibited very low mass loss, ranging between 0.1% and 0.8%, indicating minimal          deterioration. In contrast, fiber-reinforced specimens exposed to MgSO₄ and HCl showed slightly higher mass loss, ranging from 0.2% to 0.3%, especially in the fiber-reinforced specimens. Despite minor material loss, a corresponding reduction in compressive strength was observed after immersion. Overall, the findings demonstrate that incorporating waste steel fibers significantly enhances the durability and resistance of high-performance concrete in harsh chemical environments.