Difference between revisions of "Porosity"
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== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| − | Porigkeit (Deut.); | + | Porigkeit (Deut.); Porosität (Deut.); porosité (Fr.); porosidade (Port.) |
== Other Properties == | == Other Properties == | ||
| Line 13: | Line 13: | ||
== Authority == | == Authority == | ||
| − | * | + | * ASTM, Standard Terminology of Microscopy, Annual Book of ASTM Standards, Section 14, General Methods and Instrumentation, ASTM, E175, 75-78, May 1982 |
| − | * | + | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 |
| − | * | + | * Submitted information Comment: José Delgado Rodrigues, LNEC, 2009. |
| − | * | + | * ''The American Heritage Dictionary'' or ''Encarta'', via Microsoft Bookshelf 98, Microsoft Corp., 1998 |
| − | * | + | * Matt Roberts, Don Etherington, ''Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology'', U.S. Government Printing Office, Washington DC, 1982 |
| − | * | + | * Boise Cascade Paper Group, ''The Paper Handbook'', Boise Cascade, Portland OR, 1989 |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 06:55, 24 July 2013
Description
The volume of open space, or interstices, within a solid material. Porosity is expressed as a percentage of the total void volume ratioed to the total volume of a material. A rough test for the porosity of a small stone or ceramic piece is to dry the object, weight it, then soak it in water for 12 hours and re-weigh. The weight difference corresponds to the amount of absorbed water. The porosity of paper is generally measured with commercial testing equipment, such as the Gurley Densometer or the Sheffield porosimeter.
Synonyms and Related Terms
Porigkeit (Deut.); Porosität (Deut.); porosité (Fr.); porosidade (Port.)
Other Properties
% porosity = (Vv x 100)/ Vt where Vv = volume of voids and Vt=vtotal volume
Authority
- ASTM, Standard Terminology of Microscopy, Annual Book of ASTM Standards, Section 14, General Methods and Instrumentation, ASTM, E175, 75-78, May 1982
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971
- Submitted information Comment: José Delgado Rodrigues, LNEC, 2009.
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998
- Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
- Boise Cascade Paper Group, The Paper Handbook, Boise Cascade, Portland OR, 1989