Radon is a radioactive noble gas exhaled from the soil that can reach high concentrations in enclosed spaces. As elevated concentrations cause serious health problems, legislation has been put in place in many countries to regulate the limit concentration and even establish mitigation techniques. One of the most effective techniques for new buildings is the installation of radon barriers. The most important parameter determining whether the barrier is adequate to protect against radon is the diffusion coefficient, whose measurement methodology is standardized in ISO/TS 11665–13:2017. This work applies a previously tested modification of this standard to calculate the radon diffusion coefficient of different materials used as single or multilayer form barriers. Given that there are wasted laminated materials, composed of polymeric materials and aluminium, which are difficult to recycle, a preliminary study of the possible effectiveness of these materials as radon barriers will be carried out using these materials separately or in combination. The materials to be tested are 10-micron sheets of polyethene (PE) and 15-micron sheets of aluminium (Al), testing in each case one, two and three layers of each material. In addition, combinations of the two materials, i.e., PE-Al-PE and PE-Al-PE-Al-PE, are also studied. The diffusion coefficients obtained vary around 2·10⁻¹² m²/s for PE and around 1·10⁻¹³ m²/s in the case of Al. The combination of both materials improved results obtained for single-materials barriers giving a diffusion coefficient between 10⁻¹³ and 10⁻¹⁴ m²/s. Radon reductions achieved range from 70-87.5% for PE to more than 98% for Al and the materials combinations. The excellent radon shielding capacity of aluminium is observed, which grows with increasing material thickness. Furthermore, it can be stated that the use of multilayer materials of different nature is very effective in reducing the radon concentration reaching an enclosed space and the use of aluminium in some of the layers is essential to achieve a more significant shielding effect.

氡是一种从土壤中呼出的放射性惰性气体，在封闭空间内可达到高浓度。由于浓度升高会导致严重的健康问题，许多国家已制定立法来规范浓度限值，甚至建立缓解技术。新建筑最有效的技术之一是安装氡屏障。确定屏障是否足以抵御氡气的最重要参数是扩散系数，其测量方法在 ISO/TS 11665–13:2017 中标准化。这项工作应用了该标准的先前测试修改来计算用作单层或多层形式屏障的不同材料的氡扩散系数。鉴于有浪费的层压材料，由难以回收的聚合物材料和铝组成，因此将单独或组合使用这些材料对这些材料作为氡屏障的可能有效性进行初步研究。要测试的材料是 10 微米的聚乙烯 (PE) 片和 15 微米的铝 (Al) 片，每种材料分别测试一层、两层和三层。此外，还研究了两种材料的组合，即PE-Al-PE和PE-Al-PE-Al-PE。获得的扩散系数在 2·10 左右变化 要测试的材料是 10 微米的聚乙烯 (PE) 片和 15 微米的铝 (Al) 片，每种材料分别测试一层、两层和三层。此外，还研究了两种材料的组合，即PE-Al-PE和PE-Al-PE-Al-PE。获得的扩散系数在 2·10 左右变化 要测试的材料是 10 微米的聚乙烯 (PE) 片和 15 微米的铝 (Al) 片，每种材料分别测试一层、两层和三层。此外，还研究了两种材料的组合，即PE-Al-PE和PE-Al-PE-Al-PE。获得的扩散系数在 2·10 左右变化^PE为-12  m ² /s，Al为1·10 ^-13  m ² /s左右。两种材料的组合改善了单一材料屏障获得的结果，扩散系数在 10 ^-13和 10 ^-14  m ^2之间/秒。实现的氡减排范围从 PE 的 70-87.5% 到铝和材料组合的 98% 以上。观察到铝具有优异的氡屏蔽能力，这种能力随着材料厚度的增加而增加。此外，可以说使用不同性质的多层材料对于降低到达封闭空间的氡浓度非常有效，并且在某些层中使用铝对于实现更显着的屏蔽效果至关重要。