Record Display for the EPA National Library Catalog

RECORD NUMBER: 9 OF 18

OLS Field Name OLS Field Data
Main Title Laboratory Assessment of the Permeability and Diffusion Characteristics of Florida Concretes. Phase 2. Field Samples and Analyses.
Author Snoddy, R. ;
CORP Author Acurex Environmental Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.;Florida Dept. of Community Affairs, Tallahassee. Codes and Standards Div.
Publisher Jul 95
Year Published 1995
Report Number EPA-68-DO-0141; EPA/600/R-95/103;
Stock Number PB95-243168
Additional Subjects Concretes ; Permeability ; Radon ; Air pollution control ; Radionuclide migration ; Air flow ; Indoor air pollution ; Concrete slabs ; Physical properties ; Water ; Cements ; Fly ash ; Sands ; Stones ; Porosity ; Diffusion coefficient ; Slab on ground construction ; Construction materials ; Tests ; Statistical analysis ; Florida ;
Holdings
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Status
NTIS  PB95-243168 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 11/25/1995
Collation 51p
Abstract
Primary research objectives were to establish the capability to measure concrete's permeability and diffusivity; to measure these parameters in a small sampling of the typical types of Florida concrete; if possible, to correlate the physical parameters of the concrete (mix design, porosity, etc.) to the measured diffusion and permeability coefficients. Sample permeability was measured and analyzed with a device developed for this project. For both permeability and diffusivity, the amount of water added to the mix at the site was directly and positively related and identified as a possible major factor. The data indicated that the total amount of sand and stone in the mix was possibly correlated to the permeability. A third possible correlation involved the amount of fly ash or the cement to fly ash ratio.