Re: How much radon gets through a concrete slab?

["Tom English" <englishtoma@HOTMAIL.COM>]

Dan,



You may want to start with these articles.



Health Phys 1997 Jan;72(1):153-5 Porosity trends in radon transport through 

concrete and consistency in defining diffusion coefficients. Rogers VC, 

Nielson KK.



Health Phys 1995 Jun;68(6):800-8  Laboratory measurements of the transport 

of radon gas through concrete samples.

Renken KJ, Rosenberg T. Mechanical Engineering Department, University of 

Wisconsin-Milwaukee 53201-0784, USA.



Health Phys 1995 Jun;68(6):817-22 In-situ determination of the diffusion 

coefficient of 222Rn in concrete.

Gadd MS, Borak TB. Department of Radiological Health Sciences, Colorado 

State University, Fort Collins 80523, USA.



Health Phys 1983 Aug;45(2):377-83 A time-dependent method for characterizing 

the diffusion of 222Rn in concrete.

Zapalac GH.



Appl Radiat Isot 2001 Mar;54(3):467-73 Determination of 222Rn emanation 

fraction and diffusion coefficient in concrete using accumulation chambers 

and the influence of humidity and radium distribution. Cosma C, Dancea F, 

Jurcut T, Ristoiu D.



Health Phys 2001 Feb;80(2):151-6 Thermodiffusion in concrete slab as a 

driving force of indoor radon entry.

Minkin L. Portland Community College, Physics Department, OR 97219, USA. 

lminkin@pcc.edu



You may also want to check with the radon listserv group at Yahoo groups.



Tom English

englishtoma@hotmail.com





>From: Dan Richards <richards@radonseal.com>

>Reply-To: Dan Richards <richards@radonseal.com>

>To: "'Radiation Safety Mail'" <radsafe@list.vanderbilt.edu>

>Subject: How much radon gets through a concrete slab?

>Date: Tue, 17 Apr 2001 16:41:45 -0400

>

>Hi Radsafers,

>

>Are there any test data on the infiltration of radon through a concrete 

>slab

>of a typical house?

>

>I mean by diffusion, convection and moisture migration from the soil. I

>don't mean infiltration through openings or cracks.

>

>I have seen an article on the diffusion of radon through concrete block

>walls in Minnesota. But I am mainly interested in poured concrete floors.

>

>Thanks in advance for your tips.

>

>--------------

>Dan Richards

>RadonSeal

>richards@radonseal.com

>203 225-0366

>

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