With the ever-increasing trend of incorporation of various wastes into building materials, monitoring the potential rise in the radioactive load due to used waste is needed. This paper presents the results of our investigation into the radioactivity of cement mortars of various percentage of granulated blast furnace slag (GBFS). The calculated gamma indexes, I_γ, reached 0.19–0.22 and thus did not exceed, in case of any sample, the required level (I_γ = 1) for bulk materials. Indoor gamma absorbed dose, D, ranged from 41.08 to 47.80 nGy/h being lower by 47% than the world average ones are. The excess life cancer risk, ELCR₇₀, obtained for the cement mortars ranged from 0.71 × 10⁻³ to 0.82 × 10⁻³ with the average value of 0.75 × 10⁻³. Linear correlation between the GBSF content and ionizing radiation was found for ²²⁶Ra radionuclide, while polynomic correlations have been found for the mass activities of ^232Th and ⁴⁰K radionuclides and the GBSF amount in the cement sample. Findings revealed that the overall ²²⁶Ra mass activity of the composite could be predicted based on the measurement of the mass activities of the individual input components.

随着将各种废物掺入到建筑材料中的趋势日益增加，需要监测由于使用过的废物引起的放射性负荷的潜在上升。本文介绍了我们对不同百分比的粒状高炉矿渣（GBFS）水泥砂浆的放射性研究的结果。所计算出的伽玛指数I _γ，达到0.19-0.22从而不超过在任何样品中，所要求的水平（I的情况下，_γ  = 1）散粒材料。室内γ吸收剂量D在41.08至47.80 nGy / h之间，比世界平均水平低47％。水泥砂浆获得的额外生命癌症风险ELCR ₇₀为0.71×10 ^-3至0.82×10 ^-3平均值为0.75×10 ^-3。对于²²⁶ Ra放射性核素，发现GBSF含量与电离辐射之间存在线性相关性，而对于水泥样品中^232Th和⁴⁰ K放射性核素的质量活度以及GBSF含量，发现了多项式相关性。结果表明，可以基于对单个输入组分的质量活度的测量来预测复合材料的总²²⁶ Ra质量活度。