NDLI: Anisotropy of Ceramic Building Products vs. Liquid Transfer Coefficient

Content Provider	Springer Nature Link
Author	Nikitsin, Vadzim I. Backiel Brzozowska, Beata
Copyright Year	2014
Abstract	The quantitative evaluation of the anisotropy of ceramic wall products based on its capillary properties was performed in the paper. Measures characterizing the material’s ability to absorb liquids in a direction of a product’s molding and perpendicularly were experimentally determined, and then liquid transfer coefficient was calculated using these indicators and applying a simple, yet accurate and theoretically justified method developed by the Authors. Results of theoretical and experimental studies provide a basis to conclude that the anisotropy of ceramic building products has a significant impact on the indicators characterizing the capillary moisture transfer process. The anisotropy coefficient defined as the ratio of the moisture diffusivity in a direction of product molding to the same coefficient, yet in perpendicular direction, can reach value of 7.5. Ignoring such explicit anisotropy of a product at calculating the moisture content of walls can lead to significant errors in liquid transport calculations. Comparison of mean conditional radii of capillaries involved in liquid transport calculated using proposed equations with data from mercury porosimetry indicated that porosimetric data cannot be applied to characterize the porosity structure of ceramic building materials in a direction perpendicular to the product molding.
Starting Page	611
Ending Page	620
Page Count	10
File Format	PDF
ISSN	01693913
Journal	Transport in Porous Media
Volume Number	106
Issue Number	3
e-ISSN	15731634
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-11-20
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Liquid transfer coefficient Capillary transport Ceramic wall products Anisotropy Geotechnical Engineering & Applied Earth Sciences Industrial Chemistry/Chemical Engineering Hydrology/Water Resources Civil Engineering Hydrogeology Classical Continuum Physics
Content Type	Text
Resource Type	Article
Subject	Catalysis

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