title: Radon diffusion coefficients for residential concretes.
abstract: 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 x 10(-8) m2 s-1 to 5.2 x 10(-7) m2 s-1. The pore diffusion coefficients 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.
authors.affiliation: Rogers and Associates Engineering Corporation, Salt Lake City, UT 84110-0330.
authors.forename: V C
authors.initials: VC
authors.lastname: Rogers
authors.forename: K K
authors.initials: KK
authors.lastname: Nielson
authors.forename: R B
authors.initials: RB
authors.lastname: Holt
authors.forename: R
authors.initials: R
authors.lastname: Snoddy
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis*; D003252:Construction Materials / Q000032:analysis*; D004058:Diffusion; D006798:Housing; D011886:Radon / Q000032:analysis / Q000737:chemistry*; D012044:Regression Analysis
chemical_list: D000396:Air Pollutants, Radioactive; D011886:Radon