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<p>This work studied the thermal and microstructural properties of three concretes fabricated with locally mined copper-rock-ore (CO), zinc-rock-ore (ZO), and iron-rock-ore (IO) for gamma radiation shielding application. The densities of the produces concrete varied as 2.13&#xa0;g/cm<sup>3</sup> (CO), 2.18&#xa0;g/cm<sup>3</sup> (ZO), and 2.28&#xa0;g/cm<sup>3</sup> (IO). 0.6 water-to-cement ratio was maintained throughout the fabrications. The findings revealed that, at 0.689&#xa0;MeV, IO had the superior linear attenuation coefficient (LAC) as 0.157&#xa0;cm<sup>− 1</sup>, then ZO had 0.150&#xa0;cm<sup>− 1</sup>, and lastly, CO 0.148&#xa0;cm<sup>− 1</sup>. At 900&#xa0;°C, sample IO loss 92% of its total weight based on thermal analysis, with sample CO having the highest heat resistance. SEM and XRD results showed that concrete sample IO exhibited the quick surface hardening and superior crystalline structure. Findings of this work showed that, iron rock ore-modified concrete could have the potential of offering a lead-free, cost-effective, efficient and readily-available gamma radiation shielding material.</p>

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Thermal, structural, and morphological characterization of copper, zinc, and iron rock ore-based concrete for enhanced gamma radiation shielding application

  • 期刊论文

  • 发表日期：

    2026年2月10日

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  • Mohammad W. Marashdeh,
  • Hanan Akhdar,
  • U. Rilwan,
  • Soja Reuben Joseph

摘要

This work studied the thermal and microstructural properties of three concretes fabricated with locally mined copper-rock-ore (CO), zinc-rock-ore (ZO), and iron-rock-ore (IO) for gamma radiation shielding application. The densities of the produces concrete varied as 2.13 g/cm3 (CO), 2.18 g/cm3 (ZO), and 2.28 g/cm3 (IO). 0.6 water-to-cement ratio was maintained throughout the fabrications. The findings revealed that, at 0.689 MeV, IO had the superior linear attenuation coefficient (LAC) as 0.157 cm− 1, then ZO had 0.150 cm− 1, and lastly, CO 0.148 cm− 1. At 900 °C, sample IO loss 92% of its total weight based on thermal analysis, with sample CO having the highest heat resistance. SEM and XRD results showed that concrete sample IO exhibited the quick surface hardening and superior crystalline structure. Findings of this work showed that, iron rock ore-modified concrete could have the potential of offering a lead-free, cost-effective, efficient and readily-available gamma radiation shielding material.