https://orcid.org/0000-0001-7528-7585
![Sample our Economics, Finance,Business & Industry journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5931/TOC-Subject-Sample-2021-Economics-Finance-Business-Industry.jpg"})
ABSTRACT
Using nano-silica and steel micro-fibers in high-strength concrete has gained attention due to their potential to reduce solid waste and environmental pollution. In this study, the impact of nano-silica inclusions on the mechanical properties of steel fiber-reinforced concrete, referred to as “Micro-Concrete Reinforced with Steel Fibers Embedding Nano-Silica” (MRSFEN), was assessed. MRSFEN mixtures were prepared with 0%, 1%, and 2% nano-silica content and 0.5%, 1%, 2%, and 3% steel micro-fiber content. Tests showed a 17%-32% increase in compressive strength and a 12%-29% increase in tensile strength by adding 1%-2% nano-silica across all fiber contents. Incorporating 1%-3% steel micro-fibers resulted in 18–25 MPa higher compressive strength, 6–12 MPa higher tensile strength, and 10%-35% higher flexural strength relative to non-fiber concrete. However, workability reduced by 15%-30% with 3% fiber content. The combined use of nano-silica and steel micro-fibers enhanced strength and ductility, with the optimum composition identified as 1% nano-silica with 2% steel micro-fibers based on the mechanical performance. The results indicate the potential of tailored MRSFEN mixtures to improve the mechanical properties of steel fiber-reinforced concrete, with benefits in reducing solid waste and mitigating environmental contamination.
List of symbols and abbreviations
| MRFAIN | = | Microconcrete reinforced with steel fibers with incorporation of nanomaterials. |
| A/C | = | effective water/cement weight ratio |
| A/L | = | water/whistling weight ratio |
| fcm | = | average value of concrete modulus of elasticity |
| F | = | strength |
| GF | = | fracture energy |
| HR | = | relative humidity |
| I | = | void index |
| R | = | linear regression coefficient |
| T | = | temperature |
| Vf | = | fiber volume |
| W0 | = | full deformation work |
Disclosure statement
No potential conflict of interest was reported by the author(s).
Additional information
Notes on contributors
Anbuchezian Ashokan
Dr. Anbuchezian Ashokan is the Principal of Annapoorna Engineering College in Salem, Tamil Nadu, India. With a strong background in Civil Engineering, he leads the academic and research initiatives within the department. Dr. Ashokan is dedicated to fostering excellence in education and promoting innovative research in Civil Engineering.
Ratchagaraja Dhairiyasamy
Dr. Ratchagaraja Dhairiyasamy a distinguished specialist in thermal engineering, earned his Ph.D. in mechanical engineering from Anna University. Throughout his academic career, he has contributed significantly to reputable international journals. His research focuses on critical areas such as heat transfer, nanofluids, renewable energy, and thermal system optimization. Beyond academia, he actively engages in professional development through workshops and conferences, showcasing a commitment to staying at the forefront of advancements in his field. His dedication to advancing mechanical engineering is reflected in his teaching, research, and continuous pursuit of knowledge.
Silambarasan Rajendaran
Dr. Silambarasan Rajendran is an Associate Professor and Doctoral Supervisor at the Department of Mechanical Engineering at the Annapoorna Engineering College, Salem, Tamil Nadu, India. He received his Ph.D. (Engg.) from Anna University, Chennai, Tamil Nadu, India. He is actively involved in teaching and research in Thermal, Energy, Fuels, Solar, and IC Engines.