Radon emanation rates of common partition materials in Hong Kong
Abstract
Purpose
To determine the radon emanation rates of common partition materials in Hong Kong.
Design/methodology/approach
An initial slope of radon gas growth against time and a mass balance analysis can be used to quantify the magnitude of these rates from different types of partition materials. In particular, the radon‐222 emanations from boards of calcium silicate, gypsum and lightweight concrete were measured experimentally in a small impervious radon chamber.
Findings
The radon‐222 emanations from boards of calcium silicate, gypsum and lightweight concrete were measured experimentally in a small impervious radon chamber, and expressed as becquerels per square meter per hour of air (Bq m−2 hr−1). The rates found were 2.43, 0.22 and 0.46 Bq m−2 hr(1 respectively. Comparing with the emanation rate and the quantities of radon emitting construction materials in Hong Kong, these three partition materials have a low radon emitting level.
Research limitations/implications
The model parameters used in the study were not exhaustive and were determined from samples of materials used in Hong Kong.
Practical implications
A useful source of reference for determining the radon emanation rates of common partition materials used in building developments. The results can be used to identify the exposure risk of radon in buildings.
Originality/value
This paper proposes a mathematical model of radon emanation rates of common partition materials. The model offers practical helps to professionals planning, designing and managing the selection of building materials in buildings.
Keywords
Citation
Mui, K.W., Wong, L.T. and Au‐Yeung, S.L. (2005), "Radon emanation rates of common partition materials in Hong Kong", Facilities, Vol. 23 No. 11/12, pp. 511-521. https://doi.org/10.1108/02632770510618471
Publisher
:Emerald Group Publishing Limited
Copyright © 2005, Emerald Group Publishing Limited