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 |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB95-243168 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
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. |