Radon diffusion coefficient in radon-proof membranes - determination and applicability for the design of radon barriers
Authors
Citation
International journal on architectural science, v.1, no.4, 2000, pp. 149-155
Abstract
The selection of effective radon-proof insulation from the total amount of tanking materials is very difficult due to the lack of information about radon diffusion through these materials and the absence of general guidelines for the design of radon barriers. This report describes a method for radon diffusion coefficients determination used in the Czech Republic. Results of radon diffusion coefficients measurements in more than 80 insulating materials are summarized. We have found that great differences exist in diffusion properties. The diffusion coefficients vary within four orders from 10-13m2s-1 to 10-10m2s-1. A methodological approach is proposed in order to identify the minimal thickness of radon-proof membranes in dependence on the radon diffusion coefficient in the insulation, radon concentration in the soil and building characteristics. General guidelines for selection of radon-proof insulation and the principles of application are presented.
(1) Determination of radon diffusion coefficient
(a) Description of the measuring method
(b) Evaluation of the diffusion coefficient
(c) Uncertainties of the measurement
(d) Method applicability
(e) Measured values
(2) Dimensioning of radon-proof insulation
(3) Discussion
(4) Conclusion
(5) Acknowledgement
(6) References
Description
Subject
Type
Article
Format
Date
2000
Language
en