File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Radon emanation of building material-impact of back diffusion and difference between one-dimensional and three-dimensional tests

TitleRadon emanation of building material-impact of back diffusion and difference between one-dimensional and three-dimensional tests
Authors
KeywordsRadon
Contamination
Air sampling
Diffusion
Issue Date1999
Citation
Health Physics, 1999, v. 76, n. 6, p. 675-681 How to Cite?
AbstractSmall-scale chamber experiments were conducted to investigate the radon emanation rates of commonly used building materials such as bare concrete, granite, red brick, and sand brick. It has been found that back diffusion caused by the accumulation of radon in the indoor environment has significant influence on the radon emanation rate. The radon emanation rate can be expressed as the summation of an initial emanation rate and the product of a specific back diffusion coefficient and the indoor radon level. In some occasions the radon emanation rate can be significantly lower than its initial value. A database was developed summarizing results from 26 samples. The influence of relative humidity on the radon emanation characteristics has also been discussed. Separate tests were done by coating the four sides of the building material with silicone gel to simulate a one-dimensional radon diffusion geometry. The results show that a factor has to be included when the three-dimensional test results are used to describe one-dimensional geometry, such as radon emanation from building wall surfaces. Copyright ©1999 Health Physics Society.
Persistent Identifierhttp://hdl.handle.net/10722/255830
ISSN
2015 Impact Factor: 1.193
2015 SCImago Journal Rankings: 0.683

 

DC FieldValueLanguage
dc.contributor.authorChao, Christopher Y.H.-
dc.contributor.authorTung, Thomas C.W.-
dc.date.accessioned2018-07-16T06:13:48Z-
dc.date.available2018-07-16T06:13:48Z-
dc.date.issued1999-
dc.identifier.citationHealth Physics, 1999, v. 76, n. 6, p. 675-681-
dc.identifier.issn0017-9078-
dc.identifier.urihttp://hdl.handle.net/10722/255830-
dc.description.abstractSmall-scale chamber experiments were conducted to investigate the radon emanation rates of commonly used building materials such as bare concrete, granite, red brick, and sand brick. It has been found that back diffusion caused by the accumulation of radon in the indoor environment has significant influence on the radon emanation rate. The radon emanation rate can be expressed as the summation of an initial emanation rate and the product of a specific back diffusion coefficient and the indoor radon level. In some occasions the radon emanation rate can be significantly lower than its initial value. A database was developed summarizing results from 26 samples. The influence of relative humidity on the radon emanation characteristics has also been discussed. Separate tests were done by coating the four sides of the building material with silicone gel to simulate a one-dimensional radon diffusion geometry. The results show that a factor has to be included when the three-dimensional test results are used to describe one-dimensional geometry, such as radon emanation from building wall surfaces. Copyright ©1999 Health Physics Society.-
dc.languageeng-
dc.relation.ispartofHealth Physics-
dc.subjectRadon-
dc.subjectContamination-
dc.subjectAir sampling-
dc.subjectDiffusion-
dc.titleRadon emanation of building material-impact of back diffusion and difference between one-dimensional and three-dimensional tests-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1097/00004032-199906000-00011-
dc.identifier.pmid10334584-
dc.identifier.scopuseid_2-s2.0-0032895757-
dc.identifier.volume76-
dc.identifier.issue6-
dc.identifier.spage675-
dc.identifier.epage681-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats