Reference : Determination of Moisture Diffusivity During Drying of Mortar Cement: Experimental and M...
Scientific journals : Article
Engineering, computing & technology : Energy
Engineering, computing & technology : Chemical engineering
http://hdl.handle.net/2268/140569
Determination of Moisture Diffusivity During Drying of Mortar Cement: Experimental and Modeling Study
English
Bennamoun, Lyes mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Procédés et développement durable >]
Kahlerras, Loubna mailto [Université de Liège - ULg > > > Doct. sc. ingé. (chim. appl. - Bologne)]
Michel, Frédéric mailto [Université de Liège - ULg > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil >]
Courard, Luc mailto [Université de Liège - ULg > Département Argenco : Secteur GeMMe > Matériaux de construction non métalliques du génie civil >]
Salmon, Thierry mailto [Université de Liège - ULg > Département de chimie appliquée > Département de chimie appliquée >]
Fraikin, Laurent mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Procédés et développement durable >]
Belhamri, Azeddine [> >]
Léonard, Angélique mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Procédés et développement durable >]
2013
International Journal of Energy Engineering
Scientific & Academic Publishing
3
1
1-6
Yes
International
2163-1891
2163-1905
Rosemead
USA
[en] Thermal energy ; Convective drying ; Diffusion coefficient
[en] The aim of this study is the experimental characterization of the behaviour of a mortar during convective drying. We focalise on mortar that has a rate water-cement of 0.5. The drying tests are developed in a micro-convective dryer that can use samples weighing from 0 to 8g. The advantage of these experiments is to reproduce the natural conditions that can be found during the treatment of the mortar-atmosphere problems. The response of the drying curve or the drying kinetic depends on the applied drying conditions. So, the temperature of the air varies from 60°C to 130°C, the velocity of the air is changed from 2 m.s-1 to 5 m. s-1and the relative humidity is kept less than 1.7%. The comparison between the experimental results and the proposed analytical solutions of the equation of diffusion represented by Fick’s law, applied for a finite shape, allows determination of the values of the diffusion coefficient. It has a value of 1.71×10-10 m2.s-1 at 60°C, 13.69×10-10 m2.s-1 at 90°C and 16.27×10-10 m2.s-1 at 130°C. Calculation of the activation energy and the D0 constant are also possible.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/140569
also: http://hdl.handle.net/2268/134220

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
10.5923.j.ijee.20130301.01.pdfPublisher postprint429.71 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.