Determination of radon exhalation from construction materials using VOC emission test chambers

Area of Science:

• Environmental Science
• Building Physics
• Radiological Protection

Background:

• Radon (Rn) inhalation is a significant risk factor for lung cancer, second only to smoking.
• Stony building materials are identified as a major contributor to indoor radon concentrations.
• Understanding radon exhalation rates from construction materials is crucial for public health and regulatory compliance.

Purpose of the Study:

• To determine the radon exhalation rate of various common stony building materials.
• To assess the potential contribution of these materials to indoor radon levels using established room models.
• To evaluate the suitability of a specific test setup for measuring radon exhalation in laboratory settings.

Main Methods:

• Utilized commercially available measuring devices integrated with VOC emission test chambers.
• Experimented with five types of stony construction materials: clay brick (two types), clinker brick, light-weight concrete brick, and honeycomb brick.
• Applied room model parameters from ISO 16000-9, RP 112, and AgBB to estimate real room concentrations.

Main Results:

• Quantified the radon exhalation rates for different stony construction materials.
• Estimated the impact of these materials on indoor radon concentrations based on standardized room models.
• Demonstrated the efficacy of the combined use of measuring devices and VOC emission test chambers for radon exhalation determination.

Conclusions:

• The study provides essential data on radon exhalation from common building materials, aiding in the assessment of indoor radon risks.
• The employed test setup is effective for laboratories involved in VOC emission testing and can be adapted for radon measurements.
• This research supports efforts to comply with legal limits on indoor radon concentration and improve building safety.