Singularidades en el diseño de soluciones de protección frente a gas radón = Singularities in the design of protection solutions against radon gas

The isotope of radon Rn-222, appears in nature as a product of the natural disintegration of radio-226, common in the earth's crust. The exhalation potential of a terrain is defined, on the one hand, by the radio content of the substrate (for example granitic), and on the other, by the permeability of the same that allows mobility through the pores (fractured). Radon, as a gaseous element, has a high mobility and can penetrate buildings through fissures or cracks by advection or diffusion through the permeability of the materials of the envelope that are in contact with the ground. The accumulation of this gas in enclosed areas can increase concentrations and constitute a risk to the health of people who inhale it. The WHO warns of its effects, placing it as a carcinogen of grade one, being the second cause of lung cancer contraction (the first would be tobacco). This communication offers design guidelines, and the particularities associated with the strategies of action, based on the studies carried out through research projects.