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Open AccessArticle
Experimental Study on the Mechanical Properties of Steel Fiber Ferronickel Slag Powder Concrete
by
Pengcheng Hu
Pengcheng Hu 1,2,
Xiaodong Li
Xiaodong Li 2,3,
Qingyan Zhang
Qingyan Zhang 2 and
Fan Feng
Fan Feng 4,*
1
Shengsi County Urban and Rural Construction Investment and Development Co., Ltd., 349 Shahe Rd, Shengsi, Zhoushan 202450, China
2
National Engineering Laboratory for Applied Technology of Forestry & Ecology in South China, Central South University of Forestry and Technology, 498 South Shaoshan Rd, Changsha 410075, China
3
Institute of Structural Material Failure and Strengthening Technology, Ningbo Polytechnic, 388 East Lushan Rd, Ningbo 315800, China
4
School of Architectural Engineering, Hunan Institute of Engineering, Xiangtan 411100, China
*
Author to whom correspondence should be addressed.
Buildings 2024, 14(8), 2471; https://doi.org/10.3390/buildings14082471 (registering DOI)
Submission received: 28 May 2024
/
Revised: 25 June 2024
/
Accepted: 7 August 2024
/
Published: 10 August 2024
Abstract
The use of ferronickel slag powder (FNSP) as a cementitious additional material has been supported by numerous reports. FNSP concrete has the same shortcomings as ordinary concrete, including low hardness. In this study, in order to make FNSP concrete more durable, end-hooked type steel fibers were incorporated. To understand how various elements affect the mechanical properties of steel fibers, an experiment was carried out on the mechanical properties of steel FNSP concrete (SFNSPC). FNSP’s principal ingredients, with a particle size distribution ranging from 0.5 to 100 μm and a sheet-like powder shape, are CaO, SiO2, Al2O3, MgO, and others, according to tests conducted on the material’s microstructure and composition. Then, eighteen mix proportions were developed, comprising six distinct FNSP replacement rate types and three distinct steel fiber content types. Crucial metrics were evaluated and analyzed, including the relationship among the toughness, tensile strength, and compressive strength as well as slump, splitting tensile strength, compressive strength, and uniaxial compressive stress–strain curve of SFNSPC. The results showed that the slump of SFNSPC under different FNSP replacement rates decreased with increasing steel fiber volume. Steel fibers have a small but positive effect on SFNSPC’s compressive strength; nonetheless, as FNSP replacement rates increased, SFNSPC’s slump gradually decreased, though not by much. These results show that FNSP is a viable alternative cementitious material in terms of strength. Specifically, the splitting tensile strength of SFNSPC improves with an increase in steel fiber content, and the pace at which SFNSPC strength drops with an increase in the FNSP replacement rate. With varying mix proportions, the stress–strain curve trend of SFNSPC remains mostly constant, and steel fibers improve the compressive toughness of SFNSPC. After adding 0.5% and 1.0% steel fibers, the toughness index of concrete with different FNSP replacement rates increased by 8–30% and 12–43%, respectively.
Share and Cite
MDPI and ACS Style
Hu, P.; Li, X.; Zhang, Q.; Feng, F.
Experimental Study on the Mechanical Properties of Steel Fiber Ferronickel Slag Powder Concrete. Buildings 2024, 14, 2471.
https://doi.org/10.3390/buildings14082471
AMA Style
Hu P, Li X, Zhang Q, Feng F.
Experimental Study on the Mechanical Properties of Steel Fiber Ferronickel Slag Powder Concrete. Buildings. 2024; 14(8):2471.
https://doi.org/10.3390/buildings14082471
Chicago/Turabian Style
Hu, Pengcheng, Xiaodong Li, Qingyan Zhang, and Fan Feng.
2024. "Experimental Study on the Mechanical Properties of Steel Fiber Ferronickel Slag Powder Concrete" Buildings 14, no. 8: 2471.
https://doi.org/10.3390/buildings14082471
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