Clay is a crucial component of the coexisting radioactive waste cover layer. The investigation of its shielding performance is of significant importance. In this study, the effects of clay type, clay moisture content, emulsion type, clay+geomembrane on radon shielding were studied by means of self-designed experimental apparatus. The results show that montmorillonite stands out as a clay type with relatively superior shielding capabilities, montmorillonite with 25% moisture surpassed other moisture levels, montmorillonite combining either polyurethane emulsion or geomembranes can yield favorable shielding effects. This research provides essential data and theoretical guidance for the utilization of clay in radon shielding.

radon  /  clay  /  barrier  /  shielding performance  /  montmorillonite  /  geomembrane  /  polyurethane emulsion