title: Radon diffusion coefficients for aged residential concretes.
abstract: This note reports radon gas pore diffusion coefficient measurements for residential concretes from Florida, ranging in age from 12 y to 45 y. The coefficients ranged from 1.5 x 10(-7) m2 s-1 to 5.5 x 10(-7) m2 s-1. On the average, these values are about a factor of 1.6 higher than average values previously reported for new residential concretes in Florida.
authors.affiliation: Rogers & Associates Engineering Corporation, Salt Lake City, UT 84110-0330, USA.
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
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis*; D055592:Biophysical Phenomena; D001703:Biophysics; D003252:Construction Materials; D004058:Diffusion; D005431:Florida; D006798:Housing; D011886:Radon / Q000032:analysis*; D013997:Time Factors
chemical_list: D000396:Air Pollutants, Radioactive; D011886:Radon