Study on the Effect of Steel Slag in Improving Saline Soil

Study on the Effect of Steel Slag in Improving Saline Soil

Authors

  • Jinpeng Zhuo College of Construction Engineering, Jilin University, Changchun 130026, China
  • Huie Chen College of Construction Engineering, Jilin University, Changchun 130026, China
  • Fuang Li College of Construction Engineering, Jilin University, Changchun 130026, China

DOI:

https://doi.org/10.53469/wjimt.2025.08(02).04

Keywords:

Saline soil, Steel slag, Mechanical strength

Abstract

Saline soil is a special type of soil characterized by a high content of soluble salts and poor engineering properties. This study proposes the use of steel slag to improve saline soil and investigates the effects of different steel slag contents and curing ages on the mechanical properties of saline soil through unconfined compressive strength (UCS) tests, direct shear tests, and Atterberg limits tests. The results indicate that steel slag powder significantly enhances the mechanical properties of saline soil. UCS, stiffness, and cohesion increase with curing age, while they exhibit an initial increase followed by a decrease as the steel slag content rises. The optimal improvement effect is achieved at a steel slag content of 2.5% and a curing age of 28 days, with respective increases of 103.9%, 303.2%, and 162.4%. Additionally, the internal friction angle increases with steel slag content, with a maximum increment of 7.81°. The Atterberg limits test results show that steel slag powder increases the plastic limit of saline soil, whereas the liquid limit and plasticity index decrease with increasing steel slag content. In summary, steel slag exhibits excellent potential for improving the properties of saline soil.

References

Weitong X, Jiaqi W and Yan H (2025). Characterization and Mechanism Analysis of Hydrophobic Polymer-Modified Saline Soil. Journal of Materials in Civil Engineering, vol.37, no.3.

Jiejie S, Qing W and Yating C (2022). Evolution process of the microstructure of saline soil with different compaction degrees during freeze-thaw cycles. Engineering Geology, vol. 304, p. 106699.

Jiyun N, Jiankun L and Dan C (2022). Mechanical characteristics and microstructure study of saline soil stabilized by quicklime after curing and freeze-thaw cycle. Cold Regions Science and Technology, vol.201, p. 103625.

Jiang Y, Dai H and Fisonga M (2024). Feasibility and mechanism of high alumina cement-modified chlorine saline soil as subgrade material. Construction and Building Materials, vol.429, p.136411.

Zhang X, Shen J and Wang Y (2017). An environmental sustainability assessment of China’s cement industry based on emergy. Ecological Indicators, vol. 72, no.1, p.452-458.

World Steel Association (2024). World Steel in Figures 2024. World Steel in Figures 2024 - worldsteel.org.

Wenhao G, Wentao Z and Xianjun L (2023). Comprehensive utilization of steel slag: A review. Powder Technology, vol.422, p.118449.

S. A B, Punit S and O. E F (2020). Stabilization of a Clayey Soil with Ladle Metallurgy Furnace Slag Fines. Materials (Basel, Switzerland), vol.13, no.19, p.4251-4251.

Chunyang Y, Chunyi C and Yu W (2021). Strength performance and microstructural evolution of carbonated steel slag stabilized soils in the laboratory scale. Engineering Geology, vol.295, p. 106410.

Xuefei W, Zicheng Z and Zihao S (2022). Engineering properties of marine soft clay stabilized by alkali residue and steel slag: an experimental study and ANN model. Acta Geotechnica, vol.17,no.11,p.5089-5112.

Yu Z, Cheng L and Yunsheng Z (2024). The mechanical strength, microstructure, and transport properties of steel slag reinforced loess soil system. Case Studies in Construction Materials, vol.20, p. e02702.

Liyan W, Bin Z and Xing X (2024). Dynamic shear modulus and damping ratio of marine silt improved with wasted steel slag. Marine Georesources & Geotechnology, vol.42,no.4,p.385-394.

Yu C, He B C and Li Z (2024). Disintegration characteristics and mechanism of red clay improved by steel slag powder. Construction and Building Materials, vol.444, p.137873.

Downloads

Published

2025-02-27

Issue

Section

Articles
Loading...