Modifications on Microporosity and Physical Properties of Cement Mortar Caused by Carbonation : Comparison of Experimental Methods
Author
Source
Advances in Materials Science and Engineering
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-09-18
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
The influence of carbonation on the microstructure of normalised CEM II mortar was studied using nitrogen adsorption and porosity accessible to water.
Samples were prepared and subjected to accelerated carbonation at 20°C, 65% relative humidity, and 20% CO2 concentration.
Conflicts in results were observed because while the pore size distributions calculated by BJH method from nitrogen adsorption provided evolution of the micro- and mesopores during carbonation, the porosity accessible to water showed changes in all three porous domains: macro-, meso- and micropores.
Furthermore, the porous domains explored by water and nitrogen molecules are not the same because of the difference in the molecular sizes.
These two techniques are therefore different and help to complementarily evaluate the effects of carbonation.
We also examined the evolution of macrophysical properties such as the solid phase volume using helium pycnometry, gas permeability, thermal conductivity, thermal diffusivity, and longitudinal and transverse ultrasonic velocities.
This is a multiscale study where results on microstructural changes can help to explain the evolution of macro physical properties.
American Psychological Association (APA)
Pham, Son Tung. 2013. Modifications on Microporosity and Physical Properties of Cement Mortar Caused by Carbonation : Comparison of Experimental Methods. Advances in Materials Science and Engineering،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-489273
Modern Language Association (MLA)
Pham, Son Tung. Modifications on Microporosity and Physical Properties of Cement Mortar Caused by Carbonation : Comparison of Experimental Methods. Advances in Materials Science and Engineering No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-489273
American Medical Association (AMA)
Pham, Son Tung. Modifications on Microporosity and Physical Properties of Cement Mortar Caused by Carbonation : Comparison of Experimental Methods. Advances in Materials Science and Engineering. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-489273
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-489273