Radioactive Radon Permeability and Diffusion Testing

 

July 7, 2003

 

The following permeability and diffusion coefficients were determined for Polyguard Underseal™ Membranes:

Table 1. Measured air permeability coefficient.

 

Table 2. Measured radon gas diffusion coefficient.

In summary, the tested membrane exhibited a very small permeability coefficient compared to the concrete sample. By placing the membrane adjacent to the concrete sample, a 36.2% reduction in the permeability coefficient as compared to the plain concrete sample was realized. With regards to the diffusion tests, measurements showed the membrane exhibited a two order of magnitude difference with the concrete sample. By placing the membrane adjacent to the concrete sample, a 97.1% reduction in the radon gas diffusion coefficient was realized as compared to the plain concrete sample.

 

For details on the testing contact Polyguard Products.