Radioactivity and radon exhalation rates of building materials in The Netherlands

1985 ◽  
Vol 45 ◽  
pp. 151-156 ◽  
Author(s):  
J.G. Ackers ◽  
J.F. Den Boer ◽  
P. De Jong ◽  
R.A. Wolschrijn
Keyword(s):  
The Netherlands ◽  
Building Materials ◽  
Radon Exhalation ◽  
Radon Exhalation Rates

Setup and procedure for routine measurements of radon exhalation rates of building materials

2018 ◽  
Vol 112 ◽  
pp. 6-10 ◽  
Author(s):  
D. Al-Azmi ◽  
I.C. Okeyode ◽  
O.O. Alatise ◽  
A.O. Mustapha
Keyword(s):  
Building Materials ◽  
Radon Exhalation ◽  
Radon Exhalation Rates

scholarly journals Radon exhalation rates from common building materials in India: Effect of back diffusion

2016 ◽  
Vol 31 (3) ◽  
pp. 277-281
Author(s):  
Amit Kumar ◽  
Pal Chauhan
Keyword(s):  
Building Materials ◽  
Rice Husk Ash ◽  
Indoor Radon ◽  
Track Detector ◽  
Back Diffusion ◽  
Type Ii ◽  
Indoor Radon Concentration ◽  
Radon Exhalation ◽  
Brick Powder ◽  
Radon Exhalation Rates

A radon exhalation study for building materials was carried out by closed accumulator technique using plastic track detector LR-115 type-II, taking into account the effect of back diffusin. The back diffusion of radon into the materials causes an underestimate of free exhalation rates. The results showed that radon exhalation rates of soil, sand, brick powder, and crasher were found to be high as compared to rice husk ash, wall putty, and plaster of Paris. The radon exhalation rates from building materials varied from 0.45 ? 0.07 mBq/kgh to 1.55 ? 0.2 mBq/kgh and 3.4 ? 0.7 mBq/m2h to 28.6 ? 3.8 mBq/m2h as measured without considering back diffusion. The radon exhalation rates of building materials oblivious of back diffusion varied from 4.3 ? 0.8 mBq/m2h to 44.1 ? 5.9 mBq/m2h. The radon exhalation rates from building materials can be used for estimation of radon wall flux and indoor radon concentration. Thus, it is necessary to make correction in the measured exhalation rates by back diffusion.

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