The behaviour of a gap graded sand with mixed mineralogy

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • E. Ponzoni
  • A. Nocilla
  • M.R. Coop

Detail(s)

Original languageEnglish
Pages (from-to)1030-1044
Journal / PublicationSoils and Foundations
Volume57
Issue number6
Online published13 Nov 2017
Publication statusPublished - Dec 2017

Abstract

The compression and shearing behaviour in mixtures of soils of different granulometries and/or mineralogies has been researched extensively. The focus of the research has been to identify the key factors that might lead the behaviour to change from transitional to not transitional, where transitional behaviour is characterised by non-convergent compression paths and critical state lines that might be non-unique. A review of mixtures of different soils revealed a complex pattern of behaviour, in which transitional behaviour can be caused by relatively small changes in the proportion or nature of the soil particles. It was then assumed that the mineralogy of the matrix composed by larger grains determines the mode of behaviour. If there is a strong and stiff matrix made of quartz sand particles either larger than or at least of a similar size to the other component, then non-convergent compression paths and/or not unique CLSs are likely to occur. This paper presents the results of triaxial and oedometer tests on a range of mixtures of a quartz sand and a carbonate sand, but with a larger weaker carbonate sand component. As predicted, no transitional behaviour was seen in any mixture.

Research Area(s)

  • Laboratory tests, Sandy mixtures, Gap graded soils, Transitional behaviour, FINES, PARTICLE BREAKAGE, COMPRESSION BEHAVIOR, CARBONATE SAND, SOIL, MIXTURES, MECHANICS, SHEARING, EXAMPLE

Bibliographic Note

Full text of this publication does not contain sufficient affiliation information. With consent from the author(s) concerned, the Research Unit(s) information for this record is based on the existing academic department affiliation of the author(s).

Citation Format(s)

The behaviour of a gap graded sand with mixed mineralogy. / Ponzoni, E.; Nocilla, A.; Coop, M.R.

In: Soils and Foundations, Vol. 57, No. 6, 12.2017, p. 1030-1044.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review