Record Display for the EPA National Library Catalog


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 ;
Library Call Number Additional Info Location Last
NTIS  PB95-243168 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 11/25/1995
Collation 51p
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.