Test of four different experimental methods to determine sorption isotherms
(2002) In Journal of Materials in Civil Engineering 14(6). p.471-477- Abstract
- One important property of materials is their moisture fixation capacity, i.e., their ability to hold moisture at different relative humidities. The sorption isotherm is one of the main input data in moisture diffusion models, and it can also be used to evaluate properties of the microstructure. We have used four different methods to measure the sorption isotherm of sandstone and porous glass. The first method was to equilibrate samples over saturated salt solutions. The second was a sorption balance in which small material samples were weighed as they were exposed to different relative humidities. The third method was the pressure plate extractor, in which a totally wet sample was equilibrated at various overpressures, corresponding to... (More)
- One important property of materials is their moisture fixation capacity, i.e., their ability to hold moisture at different relative humidities. The sorption isotherm is one of the main input data in moisture diffusion models, and it can also be used to evaluate properties of the microstructure. We have used four different methods to measure the sorption isotherm of sandstone and porous glass. The first method was to equilibrate samples over saturated salt solutions. The second was a sorption balance in which small material samples were weighed as they were exposed to different relative humidities. The third method was the pressure plate extractor, in which a totally wet sample was equilibrated at various overpressures, corresponding to certain relative humidities. The fourth method was a newly developed microcalorimetric technique to measure sorption isotherms. Despite the different natures of the methods, a satisfying agreement was found. (10 refs.) (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/975644
- author
- Johannesson, Björn LU and Janz, Mårten LU
- organization
- publishing date
- 2002
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Isotherms, Civil engineering, Sorption, Moisture, Atmospheric humidity, Diffusion, Sandstone, Microcalorimetric technique, Porous materials
- in
- Journal of Materials in Civil Engineering
- volume
- 14
- issue
- 6
- pages
- 471 - 477
- publisher
- American Society of Civil Engineers (ASCE)
- external identifiers
-
- scopus:0036869324
- ISSN
- 0899-1561
- DOI
- 10.1061/(ASCE)0899-1561(2002)14:6(471)
- language
- English
- LU publication?
- yes
- id
- 9262d48c-38a4-4eee-a9fe-8e1b849dd0e4 (old id 975644)
- date added to LUP
- 2016-04-01 17:09:39
- date last changed
- 2024-01-11 21:46:16
@article{9262d48c-38a4-4eee-a9fe-8e1b849dd0e4,
abstract = {{One important property of materials is their moisture fixation capacity, i.e., their ability to hold moisture at different relative humidities. The sorption isotherm is one of the main input data in moisture diffusion models, and it can also be used to evaluate properties of the microstructure. We have used four different methods to measure the sorption isotherm of sandstone and porous glass. The first method was to equilibrate samples over saturated salt solutions. The second was a sorption balance in which small material samples were weighed as they were exposed to different relative humidities. The third method was the pressure plate extractor, in which a totally wet sample was equilibrated at various overpressures, corresponding to certain relative humidities. The fourth method was a newly developed microcalorimetric technique to measure sorption isotherms. Despite the different natures of the methods, a satisfying agreement was found. (10 refs.)}},
author = {{Johannesson, Björn and Janz, Mårten}},
issn = {{0899-1561}},
keywords = {{Isotherms; Civil engineering; Sorption; Moisture; Atmospheric humidity; Diffusion; Sandstone; Microcalorimetric technique; Porous materials}},
language = {{eng}},
number = {{6}},
pages = {{471--477}},
publisher = {{American Society of Civil Engineers (ASCE)}},
series = {{Journal of Materials in Civil Engineering}},
title = {{Test of four different experimental methods to determine sorption isotherms}},
url = {{http://dx.doi.org/10.1061/(ASCE)0899-1561(2002)14:6(471)}},
doi = {{10.1061/(ASCE)0899-1561(2002)14:6(471)}},
volume = {{14}},
year = {{2002}},
}