Frost heave and dry density changes during cyclic freeze-thaw of a silty clay

Auteur(s) et Affiliation(s)

HUI, B.

State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Inst., Chinese Academy of Sciences, Lanzhou, Chine

PING, H.

School of Civil Engineering and Architecture, Beijing Jiatong Univ., Beijing, Chine

Description :
Open-system frost heave tests were performed on a silty clay using a lower boundary condition of +2°C and unidirectional freezing at -10°c from the surface, or freezing and thawing with an upper boundary temperature that cycled from -10°C to +10°C or from -10°C to 0°C. The amont of frost heave, the distribution of moisture at the end of the experiment and the final dry density profiles all differed for the 3 cases. The experiments demonstrate that freeze-thaw history is important in assessing or predicting the frost heave of silty clays.

Type de document :
Article de périodique

Source :
Permafrost and periglacial processes, issn : 1045-6740, 2009, vol. 20, n°. 1, p. 65-70, nombre de pages : 6, Références bibliographiques : 1 p.

Date :
2009

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais