Study on Application of Iron Tailings in Cement Stabilized Macadam

Abstract:

With the rapid development of ferrous metallurgy, the production of iron tailings as waste after beneficiation is increasing. Due to the shortage of natural stone in road construction, iron tailings can be used as an alternative material to natural stone in semi-rigid bases. In order to study the feasibility of application of cement stabilized iron tailings (CSIT) in semi-rigid base, unconfined compressive strength (UCS), indirect tensile strength (ITS) and cyclic freeze-thaw tests were carried out on cement stabilized iron tailings (CSIT). The gradation composition and cement content were selected as influencing factors. The results show that under the condition of the same cement content, the UCS and ITS of CSIT are proportional to the particle size in the mixture. In CSIT with the same gradation, the mechanical properties increase with the increase of cement content; CSM-40(B) has a higher UCS and CSM-40(C) has a higher ITS, the frost resistance coefficient of CSIT increases with the increase of cement content and the tendency of frost resistance coefficient decreases with the increase of cement content. The frost resistanceofCSM-40 (B) is better than that of CSM-40 (C) for the same cement content. Therefore, for the use of iron tailings in CSM, a suitable gradation composition and cement content should be selected.

• Periodical: Key Engineering Materials (Volume 944)
• Pages: 231-246
• DOI: https://doi.org/10.4028/p-3et972
• Online since: April 2023
• Authors: Jian Sun*, Valeriy Zhdaniuk, Yu Lin He, Andrii Bieliatynskyi
• Keywords: Cement Stabilized Iron Tailings, Frost Resistance, Indirect Tensile Strength, Road Engineering, Unconfined Compressive Strength

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