Concentration dependent diffusion in building materials - application of different methods

• Type: Article in International Scientific Journal
• Date: 2008

Authors

Vasco Freitas (Author) FEUP; Nuno Ramos (Author) FEUP; João Delgado (Author) FEUP

Journal

Title: Defect and Diffusion Forum

Vol. 273-276

Pages: 61-65

ISSN: 1012-0386

Publisher: Trans Tech Publications Ltd

Indexing

ISI Web of Science

Scopus

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

DOI: 10.4028/www.scientific.net/DDF.273-276.150

Abstract (EN): Moisture is an important factor when analyzing the behaviour of building elements and materials. A deeper knowledge on moisture transport under transient conditions of environmental air temperature and humidity is required. In this experimental work, the measurements of moisture diffusion coefficients, D-w, of three different types of building materials commonly used in Portugal (gypsum plasterboard, gypsum plaster and gypsum+lime plaster) were obtained for different values of temperature and relative humidity. The results obtained were in good agreement with the values found in literature and show that the increase in temperature resulted in an increase in the diffusion coefficient and an increase in relative humidity (54% to 69%) resulted in a decrease in D-w.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5