Process for reducing radon inside buildings

Abstract

A process for reducing radon inside a building whose inner atmosphere is susceptible to radon accumulation is disclosed herein. The process involves, application of a composition including a crosslinkable epoxy resin of bisphenol A type and a crosslinking agent to a structural component of the building. The composition is applied in an amount corresponding to a surface density of the resin between 300 and 1300 g/m 2 .

1 . A process for reducing radon inside a building, the process comprising a step of applying between 300 and 1300 g/m 2  of a composition comprising a crosslinkable bisphenol A epoxy resin and a crosslinking agent to at least an inner surface of a structural component of the building.  
   
   
       2 . The process according to  claim 1 , wherein between 400 and 950 g/m 2  of the composition is applied.  
   
   
       3 . The process according to  claim 1 , wherein the building has an inner atmosphere which is capable of reaching a radon concentration greater than 100 Bq/m 3 .  
   
   
       4 . The process according to  claim 1 , wherein the building has an inner atmosphere which is capable of reaching a radon concentration greater than 200 Bq/m 3 .  
   
   
       5 . The process according to  claim 1 , wherein the building has an inner atmosphere which is capable of reaching a radon concentration of greater than 400 Bq/m 3 .  
   
   
       6 . The process according to  claim 1 , wherein the building has an inner atmosphere which is capable of reaching a radon concentration of greater than 1000 Bq/m 3 .  
   
   
       7 . The process according to  claim 1 , wherein the building is a building in which people reside over long periods.  
   
   
       8 . The process according to  claim 1 , wherein the building is a public establishment.  
   
   
       9 . The process according to  claim 1 , wherein the crosslinkable bisphenol A epoxy resin comprises a reaction product of halo epoxides with bisphenol A, bisphenol AD or bisphenol F.  
   
   
       10 . The process according to  claim 1 , wherein the crosslinkable bisphenol A epoxy resin comprises a mixture of bisphenol A diglycidyl ether and bisphenol F diglycidyl ether.  
   
   
       11 . The process according to  claim 1 , wherein the crosslinking agent comprises a mixture of modified polyamide and aliphatic polyamine.  
   
   
       12 . The process according to  claim 1 , wherein the ratio of the weight of crosslinkable bisphenol A epoxy resin to the weight of crosslinking agent is between 0.1 and 10.  
   
   
       13 . The process according to  claim 1 , wherein the ratio of the weight of bisphenol A crosslinkable epoxy resin to the weight of crosslinking agent is between 1 and 2.  
   
   
       14 . The process according to  claim 1 , wherein the surface density of crosslinkable bisphenol A epoxy resin is between 450 and 950 g/m 2 .  
   
   
       15 . The process according to  claim 1 , wherein the structural component comprises a concrete base slab covered with a screed.  
   
   
       16 . The process according to  claim 1 , wherein the structural component comprises cement.  
   
   
       17 . The process according to  claim 1 , wherein the composition is applied in two or more coating steps.