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Bulletin of Engineering Geology and the Environment

Erschienen in:

01.05.2012 | Original Paper

Quantitative analysis of the microstructure of Shanghai muddy clay before and after freezing

verfasst von: Yi-qun Tang, Jie Zhou, Jun Hong, Ping Yang, Jian-xiu Wang

Erschienen in: Bulletin of Engineering Geology and the Environment | Ausgabe 2/2012

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Abstract

Artificial freezing is becoming a common method of enhancing soil quality when undertaking large scale underground structures in Shanghai. This paper presents the variation in the frozen strength of Shanghai muddy clay with temperature. SEM studies were undertaken to analyse the shape and size of the pores in the frozen material compared with the undisturbed clay. The results show that compared with undisturbed soil, the shape and the orientation of the pores in samples frozen at −10, −15 and −20°C did not significantly change after the compression testing, although the pore volume increased with decreasing temperature. The relationship between microstructure and moisture migration is discussed.

Vorheriger Artikel Damage to mountain tunnels related to the Wenchuan earthquake and some suggestions for aseismic tunnel construction

Nächster Artikel A simplified method to predict creep behavior of the Yangtze River Sand

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Titel: Quantitative analysis of the microstructure of Shanghai muddy clay before and after freezing
verfasst von: Yi-qun Tang
Jie Zhou
Jun Hong
Ping Yang
Jian-xiu Wang
Publikationsdatum: 01.05.2012
Verlag: Springer-Verlag
Erschienen in: Bulletin of Engineering Geology and the Environment / Ausgabe 2/2012
Print ISSN: 1435-9529
Elektronische ISSN: 1435-9537
DOI: https://doi.org/10.1007/s10064-011-0380-9

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