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Technique for measuring moisture storage capacity at high moisture levels

Janz, Mårten LU (2001) In Journal of Materials in Civil Engineering 13(5). p.364-370
Abstract
Knowledge of moisture storage capacity above the hygroscopic range is essential when calculating moisture, especially when different materials are to be connected. Generally, the storage capacity is represented by water retention curves, in which suction is plotted against the moisture content. In a number of laboratories in Europe and North America, the pressure plate and pressure membrane techniques are used to measure water retention curves. There are, however, various ways of carrying out such measurements. This paper compares two different methods of presaturating the specimens before testing, namely capillary and vacuum saturation. It also examines the effect of different beddings between the specimen and the ceramic plate. It is... (More)
Knowledge of moisture storage capacity above the hygroscopic range is essential when calculating moisture, especially when different materials are to be connected. Generally, the storage capacity is represented by water retention curves, in which suction is plotted against the moisture content. In a number of laboratories in Europe and North America, the pressure plate and pressure membrane techniques are used to measure water retention curves. There are, however, various ways of carrying out such measurements. This paper compares two different methods of presaturating the specimens before testing, namely capillary and vacuum saturation. It also examines the effect of different beddings between the specimen and the ceramic plate. It is shown, as expected, that capillary and vacuum saturated specimens give differential results. Absorption tests clearly show that, for some materials, capillary saturation is a vague concept. For this reason, vacuum saturation is generally to be preferred. In the test with different beddings, no significant differences were found. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Materials in Civil Engineering
volume
13
issue
5
pages
364 - 370
publisher
American Society of Civil Engineers (ASCE)
external identifiers
  • scopus:0035441512
ISSN
0899-1561
DOI
10.1061/(ASCE)0899-1561(2001)13:5(364)
language
English
LU publication?
yes
id
03a01daa-9220-43fd-94e3-ed77b6a057cd (old id 1527226)
date added to LUP
2010-01-11 08:59:51
date last changed
2018-05-29 09:58:13
@article{03a01daa-9220-43fd-94e3-ed77b6a057cd,
  abstract     = {Knowledge of moisture storage capacity above the hygroscopic range is essential when calculating moisture, especially when different materials are to be connected. Generally, the storage capacity is represented by water retention curves, in which suction is plotted against the moisture content. In a number of laboratories in Europe and North America, the pressure plate and pressure membrane techniques are used to measure water retention curves. There are, however, various ways of carrying out such measurements. This paper compares two different methods of presaturating the specimens before testing, namely capillary and vacuum saturation. It also examines the effect of different beddings between the specimen and the ceramic plate. It is shown, as expected, that capillary and vacuum saturated specimens give differential results. Absorption tests clearly show that, for some materials, capillary saturation is a vague concept. For this reason, vacuum saturation is generally to be preferred. In the test with different beddings, no significant differences were found.},
  author       = {Janz, Mårten},
  issn         = {0899-1561},
  language     = {eng},
  number       = {5},
  pages        = {364--370},
  publisher    = {American Society of Civil Engineers (ASCE)},
  series       = {Journal of Materials in Civil Engineering},
  title        = {Technique for measuring moisture storage capacity at high moisture levels},
  url          = {http://dx.doi.org/10.1061/(ASCE)0899-1561(2001)13:5(364)},
  volume       = {13},
  year         = {2001},
}