TITLE:
Effect of Steel Fiber on Concrete’s Compressive Strength
AUTHORS:
Mohammed Saed Yusuf, Abdirisak Bashir Isak, Guled Ali Mohamud, Abdullahi Hashi Warsame, Yahye Ibrahim Osman, Abdullahi Husein Ibrahim, Liban Abdi Aziz Elmi
KEYWORDS:
Steel Fiber Reinforced Concrete, Fiber Reinforcement, Compression Strength of Concrete, Improvement Compression Strength
JOURNAL NAME:
Open Journal of Civil Engineering,
Vol.13 No.1,
March
31,
2023
ABSTRACT: The
general goal of this research is to investigate whether steel fiber has a
significant “positive” or “negative” influence on concrete
compressive strength, as well as the optimal steel fiber ratio that delivers
best result. Manually, cement, fine aggregates, coarse aggregates, steel
fibers, and water were mixed together properly. A slump test was carried on the
mixed concrete. After determining the workability, the mixed concrete was
poured into cubes dimension 150 mm × 150 mm × 150 mm and left for 24 hours.
After 24 hours, the samples were removed from the mold and placed in a water
tank to cure for 7 to 28 days. The cube was tested for compressive and flexural
strength in a universal testing machine after the samples had cured for the
required 7 - 28 days. This study focuses on how
to obtain high strength concrete using with steel fiber in the Conventional mix
ratio to enhance concrete strength. Concrete reinforcement using steel fibers
alters the characteristics of the concrete, allowing it to withstand fracture
and hence improve its mechanical qualities. This study reports on an
experimental study that reveals the effect of steel fiber on concrete compressive strength and the optimal
steel fiber ratio that produces the best results. Steel fiber
reinforcing improved the compressive strength of concrete. The average
compressive strength of normal M25 concrete with 0% steel fibers and curing
ages of 7 and 28 days was determined to be
22.97 N/mm2 and 25.78 N/mm2,
respectively. The steel fibers are then added in various
concentrations, such as 1%, 2%, and 3%, with aspect ratios of 70. The
compressive strength of concrete with 1%, 2%, and 3% steel fiber with an aspect
ratio of 70 was examined at 7 days and found to be 23.96, 24.80, and 26.14 N/mm2 correspondingly.