Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Changes in pore structure and mercury contact angle of hardened cement paste depending on relative humidity

Changes in pore structure and mercury contact angle of hardened cement paste depending on... Hardened cement paste (hcp) is a porous heterogeneous material consisting of dispersed particles like Calcium Silicate Hydrates (C-S-H). These are of micron to nanometer size forming pores on a nanometer scale. Thus, hcp can be regarded as a colloidal system. Surface forces play a dominant role. Adsorbed water molecules interact with the surface. Capillary condensation occurs in the pores below bulk conditions acting in form of capillary and disjoning forces. All these forces are able to alter the structure and properties of the hardened cement paste depending on the moisture content. Pore size distributions were measured with mercury intrusion porosimetry on hcp specimens, which had been prestored over the entire range of relative humidity. Swelling and shrinkage of hcp tubes were also determined. The pore size distribution is corrected for each humidity step regarding the particular porosity, contact angle and volume change. The pore size distribution as a function of relative humidity is nonlinear and characterized by an extreme value in the medium range of humidity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Materials and Structures Springer Journals

Changes in pore structure and mercury contact angle of hardened cement paste depending on relative humidity

Adolphs, J.; Setzer, M.; Heine, P.
Materials and Structures , Volume 35 (8) – Aug 10, 2006
Download PDF
10 pages

Loading next page...
 
/lp/springer-journals/changes-in-pore-structure-and-mercury-contact-angle-of-hardened-cement-gqGAQI5SQe

References (29)

Publisher
Springer Journals
Copyright
Copyright © 2002 by RILEM
Subject
Engineering; Theoretical and Applied Mechanics; Structural Mechanics; Mechanical Engineering; Operating Procedures, Materials Treatment; Civil Engineering; Building Materials
ISSN
1359-5997
eISSN
1871-6873
DOI
10.1007/BF02483135
Publisher site
See Article on Publisher Site

Abstract

Hardened cement paste (hcp) is a porous heterogeneous material consisting of dispersed particles like Calcium Silicate Hydrates (C-S-H). These are of micron to nanometer size forming pores on a nanometer scale. Thus, hcp can be regarded as a colloidal system. Surface forces play a dominant role. Adsorbed water molecules interact with the surface. Capillary condensation occurs in the pores below bulk conditions acting in form of capillary and disjoning forces. All these forces are able to alter the structure and properties of the hardened cement paste depending on the moisture content. Pore size distributions were measured with mercury intrusion porosimetry on hcp specimens, which had been prestored over the entire range of relative humidity. Swelling and shrinkage of hcp tubes were also determined. The pore size distribution is corrected for each humidity step regarding the particular porosity, contact angle and volume change. The pore size distribution as a function of relative humidity is nonlinear and characterized by an extreme value in the medium range of humidity.

Journal

Materials and Structures – Springer Journals

Published: Aug 10, 2006

There are no references for this article.