The Impact of Steel Fiber Content on the Durability and Mechanical Properties of Dry Lean Concrete

The Impact of Steel Fiber Content on the Durability and Mechanical Properties of Dry Lean Concrete

Prasenjit Kumar1*, Prince Yadav2

1*MTech. Scholar, Department of Civil Engineering, Institute of Engineering & Technology, Lucknow, Uttar Pradesh, India

2Department of Civil Engineering, Institute of Engineering & Technology, Lucknow, Uttar Pradesh, India

Abstract

This research delves into the influence of varying steel fiber percentages on the mechanical properties and durability of Dry Lean Concrete (DLC). By incorporating steel fibers at specific ratios of 0%, 1%, 1.5%, 2.5%, 3.5% by volume, the study meticulously evaluates the resultant improvements in compressive strength, tensile strength, and flexural strength. Through a comprehensive microstructural analysis, the interactions between steel fibers and the cementitious matrix are examined, shedding light on the reinforcing mechanisms at play. The results demonstrate a notable enhancement in mechanical properties up to an optimal fiber content with diminishing returns observed beyond this threshold, likely attributable to fiber clumping and inadequate dispersion. This investigation elucidates the optimal steel fiber content necessary to maximize the mechanical performance and durability of DLC, thus providing crucial insights for its effective application in construction projects. The implications of these findings underscore the potential of steel fiber reinforced DLC in enhancing the longevity and resilience of infrastructure, making it a pivotal consideration for modern engineering practices.

Keywords: Compressive strength, Dry lean concrete, Flexural strength, Scanning electron microscopy, Tensile strength.