[1] Ali H.Mahfouz, Liu Hanlong, C.F.Chiu, et al. Laboratory study for effects of vacuum preloadingon physical and mechanical properties of soft clayey soils [J]. Journal of Southeast University (English Edition), 2005, 21 (1): 82-87. [doi:10.3969/j.issn.1003-7985.2005.01.018]

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Laboratory study for effects of vacuum preloadingon physical and mechanical properties of soft clayey soils()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

21

Issue:

2005 1

Page:

82-87

Research Field:

Civil Engineering

Publishing date:

2005-03-30

Info

Title:

Laboratory study for effects of vacuum preloadingon physical and mechanical properties of soft clayey soils

Author(s):

Ali H.Mahfouz¹;  2;  Liu Hanlong;  C.F.Chiu¹;  Gao Yufeng¹;  Zhang Xiuyong¹;  3

¹Geotechnical Institute, Hohai University, Nanjing 210098, China
²Geological and Geophysical Department of Engineering College, Suez Canal University, Suez, Egypt
³Yellow River Jinan Bureau, Jinan 250013, China

Keywords:

soft soil;  vacuum preloading;  consolidation;  permeability;  strength

PACS:

TU472

DOI:

10.3969/j.issn.1003-7985.2005.01.018

Abstract:

A new triaxial apparatus was designed and manufactured.It is able to apply surcharge and combined vacuum-surcharge pressures on soil samples, and allows for monitoring of excess pore-water pressure, axial strain or settlement, and volumetric strain during the process of consolidation.Tests were performed using the apparatus on undisturbed soft clayey soil samples, which were collected from Wenzhou, Zhejiang Province, China, at average natural water content 72.5%.The consolidation behavior of the clay has no rigorous difference, whether it is consolidated under the vacuum, surcharge, or combined vacuum-surcharge preloading.The study shows that some physical properties of the soft clayey soils are changed and mechanical properties are improved to support excessive loads transferred to the soil foundation due to construction.

References:

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Memo

Memo:

Biographies: Ali H.Mahfouz(1967—), male, graduate, Egyptian, ahmahfouz@hotmail.com;Liu Hanlong(corresponding author), male, doctor, professor, hliu@hhu.edu.cn.

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