Influence of Silica Fume on the Pore Structure of Mortar when Measured by Water Vapour Sorption Isotherms

1996 ◽  
pp. 257-270 ◽  
Author(s):  
E. Helsing Atlassi
Keyword(s):  
Pore Structure ◽  
Water Vapour ◽  
Silica Fume ◽  
Sorption Isotherms ◽  
Water Vapour Sorption ◽  
Vapour Sorption

Relating soil salinity, clay content and water vapour sorption isotherms

2019 ◽  
Vol 71 (3) ◽  
pp. 399-414
Author(s):  
Mingyuan Chen ◽  
Wenzhi Zeng ◽  
Emmanuel Arthur ◽  
Thomas Gaiser ◽  
Guoqing Lei ◽  
...  
Keyword(s):  
Water Vapour ◽  
Soil Salinity ◽  
Sorption Isotherms ◽  
Clay Content ◽  
Water Vapour Sorption ◽  
Vapour Sorption

Water Vapour Sorption and Hysteresis Models Applicable for Silicate Building Materials

2015 ◽  
Vol 1126 ◽  
pp. 111-116
Author(s):  
Peter Mihalka ◽  
Peter Matiasovsky
Keyword(s):  
Water Vapour ◽  
Building Materials ◽  
Sorption Isotherms ◽  
Domain Model ◽  
Water Vapour Sorption ◽  
Clay Bricks ◽  
Vapour Sorption ◽  
Burnt Clay ◽  
Calcium Silicates ◽  
Independent Domain

Various models of the water vapour sorption isotherms were analysed from the aspect of their applicability for silicate-based building materials like calcium-silicates, burnt clay bricks, plasters and mortars. The analysis included the assessment of the various sorption hysteresis models. They were compared and calibrated with experimental data, consisting of the main adsorption and the scanning curves. For the silicate-based building materials as a fundamental the Brunauer–Emmett–Teller (BET) and Frenkel–Halsey–Hill (FHH) models of adsorption in a combination together with Kelvin-Cohan (KC) model of desorption, with the Independent Domain Model of hysteresis can be applied due to their satisfactory universality.

Analysis of the water vapour sorption isotherms of thermally modified acacia and sesendok

2010 ◽  
Vol 5 (3-4) ◽  
pp. 194-203 ◽  
Author(s):  
Zaihan Jalaludin ◽  
Callum A. S. Hill ◽  
Yanjun Xie ◽  
Hashim W. Samsi ◽  
Hamdan Husain ◽  
...  
Keyword(s):  
Water Vapour ◽  
Sorption Isotherms ◽  
Water Vapour Sorption ◽  
Vapour Sorption

scholarly journals Sorption and wetting properties of pectin edible films

2012 ◽  
Vol 30 (No. 5) ◽  
pp. 446-455 ◽  
Author(s):  
S. Galus ◽  
A. Turska ◽  
A. Lenart
Keyword(s):  
Water Vapour ◽  
Sorption Isotherms ◽  
Sorption Kinetics ◽  
Edible Films ◽  
Glycerol Concentration ◽  
Water Vapour Sorption ◽  
Vapour Sorption ◽  
Vapour Adsorption ◽  
Water Vapour Adsorption ◽  
Kinetics And Isotherms

The water vapour sorption kinetics and isotherms of pectin films prepared by the casting method were determined. The measurement of water vapour sorption kinetics was conducted using a saturated sodium chloride solution to obtain constant relative humidity of the environment (75.3%). The measurement was carried out at the temperature of 25°C over a 24 h period. The water vapour adsorption rate was the highest in the first hours of the process. The exponential equation fitted well the experimental data of water vapour adsorption with time. Glycerol concentration in the analysed films affected the increasing water vapour adsorption. The water vapour sorption isotherms were analysed using the saturated salt solutions with water activity from 0.113 to 0.901 for 3 months at 25°C. The sorption isotherms curves had a sigmoidal shape for all films. Glycerol content affected water vapour adsorption during 3 months. Peleg’s equation was appropriate for the mathematical description of the sorption isotherms. The microstructure of pectin films showed different internal arrangement as a function of the film composition.  

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