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Title: | Pressuremeter tests in municipal solid waste: measurement of shear stiffness |
Authors: | Dixon, Neil Whittle, R.W. Jones, D. Russell V. Ng'ambi, Samson |
Keywords: | Landfills In situ testing Stiffness |
Issue Date: | 2006 |
Publisher: | © Institution of Civil Engineers / Thomas Telford |
Citation: | DIXON, N....et al., 2006. Pressuremeter tests in municipal solid waste: measurement of shear stiffness. Géotechnique, 56(3), pp. 211 - 222. |
Abstract: | To assess the long-term integrity, and hence adequate
performance, of landfill lining systems the designer must
consider interaction between lining components and the
waste body. Information on typical ranges of waste mechanical
properties is required for use in numerical modelling
of this interaction. This paper presents results from
a programme of pressuremeter testing in municipal solid
waste (MSW) carried out to measure shear stiffness
properties. An optimum procedure has been developed
using a high-pressure dilatometer in a preformed test
pocket. Tests have been conducted in fresh and partially
degraded MSW deposits. Values of shear moduli for
small to intermediate strains have been obtained from
series of unload–reload loops, and these show a strong
relationship between shear modulus and depth. Stiffness
increases with cavity strain owing to drained cavity
expansion. A clear linear relationship has been found
between shear stiffness and stress level. Results for fresh
MSW from two landfill sites show close agreement. Good
agreement has been found between shear stiffness values
calculated for small strain in pressuremeter tests and
shear stiffness values measured using the continuous surface
wave method. They also compare well with the
limited amount of information in the literature. |
Description: | This article was published in the journal, Géotechnique [© Institution of Civil Engineers / Thomas Telford] and the definitive version is available at: http://www.thomastelford.com/journals/ |
Version: | Published |
DOI: | 10.1680/geot.2006.56.3.211 |
URI: | https://dspace.lboro.ac.uk/2134/4618 |
ISSN: | 0016-8505 1751-7656 |
Appears in Collections: | Published Articles (Architecture, Building and Civil Engineering)
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