The aim of this study was to optimize and evaluate structural and shielding concrete for the IFMIF-DONES building. An ordinary concrete of lime-dolomite aggregate from local sources has been chosen for structural concrete and magnetite aggregate was chosen for heavy-weight radiation shielding. The reference for concrete materials design was the one used in the ITER project. After investigations of raw materials, a group of prebatches were prepared and technical properties – density of compressive strength, were measured. Finally, two compositions have been elaborated – one for structural concrete of density 2.5 g/cm and the second for radiation shielding concrete of density 3.9 g/cm. Then a set of 50 × 50 × 5 cm slabs were prepared and sent to the Nuclear Physics Institute of the CAS in the Czech Republic for shielding mock-up experiments. Also the other technical properties like E-modulus, bending strength etc. have been determined. Additionally, radiation shielding efficiency has been calculated based on atomic composition.

中文翻译：

---

IFMIF-DONES 结构和屏蔽混凝土的优化和评估

本研究的目的是优化和评估 IFMIF-DONES 建筑的结构和屏蔽混凝土。结构混凝土选用了当地产的普通石灰白云石骨料混凝土，重型辐射屏蔽选用了磁铁矿骨料。混凝土材料设计参考的是 ITER 项目中使用的材料。在对原材料进行研究后，制备了一组预混料并测量了技术性能——抗压强度密度。最后，详细阐述了两种组合物——一种用于密度 2.5 g/cm3 的结构混凝土，另一种用于密度 3.9 g/cm3 的辐射屏蔽混凝土。随后制备了一套50×50×5 cm的板，送往捷克中科院核物理研究所进行屏蔽模型实验。其他技术性能如弹性模量、弯曲强度等也已确定。此外，辐射屏蔽效率是根据原子成分计算的。