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Title:

Effects of Silt Content and Void Ratio on the Saturated Hydraulic Conductivity and Compressibility of Sand-Silt Mixtures

Accession Number:

01150931

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/oclc/35194342

Abstract:

The hydraulic conductivity, the coefficient of consolidation, and the coefficient of volume compressibility play major roles on the pore pressure generation during undrained and partially drained loading of granular soils with fines. This paper aims to determine how much these soil parameters are affected by the percentage of fines and void ratio of the soil. The results of a large number of flexible wall permeameter tests performed on 60 specimens of two poorly graded sands with 0, 5, 10, 15, 20, and 25% nonplastic silt are presented and discussed. Hydraulic conductivity measurements were done at effective confining stresses of 50–300 kPa. The evaluation of the data shows that the hydraulic conductivity and the coefficient of consolidation of sands with 25% silt content are approximately two orders of magnitude smaller than those of clean sands. The coefficient of volume compressibility of the sand-silt mixtures is affected in a lesser degree by void ratio, silt content, and confining stress. The influence of the degree of saturation on the laboratory-measured k values is also discussed.

Language:

English

Authors:

Bandini, Paola
Sathiskumar, Sittampalam

Pagination:

pp 1976-1980

Publication Date:

2009-12

Serial:

Journal of Geotechnical and Geoenvironmental Engineering

Volume: 135
Issue Number: 12
Publisher: American Society of Civil Engineers
ISSN: 1090-0241
OCLC: 35194342
Serial URL: http://ojps.aip.org/gto

Media Type:

Print

Features:

Figures (6) ; References (8)

Subject Areas:

Geotechnology; Highways; Materials; I35: Miscellaneous Materials; I42: Soil Mechanics

Files:

TRIS

Created Date:

Jan 29 2010 7:07AM

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