title: Measurement of radon emanation factor from granular samples: effects of additives in cement.
abstract: Two methods for radon emanation factor determination were performed and compared regarding their measuring accuracy: (a) by hermetically closing the sample in an airtight container and measuring the induced radon activity, and (b) by mixing charcoal and sealing the sample hermetically and after placing the sample in an open vessel with no charcoal addition, measuring each time the 226Ra content using gamma-spectrometry. Measurements of radon emanation factor of cement and pozzolanic additives, i.e. fly ash and phosphogypsum were also performed.
authors.affiliation: Nuclear Physics Department, Division of Nuclear and Particle Physics, Atomic and Nuclear Physics Laboratory, Aristotle University of Thessaloniki, Thessaloniki 54124 Greece. stoulos@auth.gr
authors.forename: S
authors.initials: S
authors.lastname: Stoulos
authors.forename: M
authors.initials: M
authors.lastname: Manolopoulou
authors.forename: C
authors.initials: C
authors.lastname: Papastefanou
mesh_terms: D002133:Calcium Sulfate / Q000032:analysis; D002244:Carbon / Q000032:analysis; D060729:Coal Ash; D003252:Construction Materials / Q000032:analysis*; D052638:Particulate Matter; D010758:Phosphorus / Q000032:analysis; D011886:Radon / Q000032:analysis*; D013051:Spectrometry, Gamma / Q000379:methods*
chemical_list: D060729:Coal Ash; D052638:Particulate Matter; C077769:phosphogypsum; D010758:Phosphorus; D002244:Carbon; D011886:Radon; D002133:Calcium Sulfate