Article citationsMore>>

Schiller, P., Wahab, M., Bier, Th., Waida, S. and Mögel, H.-J. (2015) Capillary Forces and Sorption Hysteresis of Cement Pastes with Small Slit Pores. Proceedings of the 5th International Biennial Conference on Ultrafine Grained and Nanostructured Materials, UFGNSM15. Procedia Materials Science, 11, 649-654.
http://dx.doi.org/10.1016/j.mspro.2015.11.010
http://www.sciencedirect.com/science/article/pii/S2211812815003521

has been cited by the following article:

• TITLE: Sorption Hysteresis of Hardened Cement Pastes

  AUTHORS: Peter Schiller, Mirco Wahab, Thomas Bier, Sandra Waida, Hans-Jörg Mögel

  KEYWORDS: Porous Solids, Sorption Hysteresis, Capillary Forces, Cement-Based Materials

  JOURNAL NAME: Journal of Materials Science and Chemical Engineering, Vol.4 No.2, February 6, 2016

  ABSTRACT: Mesopores in porous solids can produce a pronounced sorption hysteresis at moderate and high reduced vapor pressures of the ambient gas that is condensed in the pores. Unlike to other conventional porous materials, cement pastes often behave exceptionally. The water sorption hysteresis frequently persists at very low humidity. This hysteresis is reflected in a corresponding hysteresis loop of the solid skeleton volume. We discuss a theoretical model based on the strong compression force exerted by a condensate on the walls of narrow slit pores embedded in an elastic solid. This compression force is shown to be capable of shifting walls of narrow slit pores. Humidity-dependent closing and reopening of slit pores can produce hysteresis loops even at low humidity.