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Rogers Vern C.; Nielson, Kirk K.; Holt, Rodger B.; Snoddy, Richard
Health Physics: September 1994
Papers: PDF Only

Radon gas diffusion through concrete can be a significant mechanism for radon entry into dwellings. Measurements of radon diffusion coefficients in the pores of residential concretes ranged from 2.1 × 10−8 m2 s−1 to 5.2 × 10−7 m2 s−1. The pore diffusion coeifficients generally increased with the water-cement ratio of the concrete and decreased with its density. A least-squares regression of the diffusion coefficients on concrete density gave an r value of −0.73.

©1994Health Physics Society