Assessment of statistical homogeneity in chemically treated granular materials

G. Shahin, M. Cil, Giuseppe Buscarnera

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This study uses statistical methods to examine the homogeneity of a chemically treated granular soil. Reactive solutions have been injected to promote mineral precipitation, thus generating solid deposits bridging the grains and occluding the pores. The analyses show that precipitation causes a rapid deterioration of the homogeneity. Such phenomenon was inspected by quantifying a statistical metric of homogeneity, as well as by mapping the spatial distribution of the degree of pore clogging. The results show that the loss of homogeneity was caused by localised precipitation at the inlet as well as by an asymmetric growth of mineral deposits along the transversal direction. On the one hand, these findings imply that a representative elementary volume cannot be rigorously defined. On the other, they stress the importance of chemical feedbacks on the microstructure of soils and suggest the need of stricter criteria to determine the minimum size of chemically treated specimens for laboratory testing.

Original languageEnglish (US)
Pages (from-to)32-39
Number of pages8
JournalGeotechnique Letters
Volume8
Issue number1
DOIs
StatePublished - Mar 1 2018

Fingerprint

Granular materials
homogeneity
Soils
Mineral resources
Spatial distribution
Deterioration
Statistical methods
Minerals
Deposits
Feedback
Microstructure
Testing
mineral deposit
microstructure
soil
spatial distribution
material
mineral

Keywords

  • chemical properties
  • fabric/structure of soils
  • statistical analysis

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Earth and Planetary Sciences (miscellaneous)

Cite this

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Assessment of statistical homogeneity in chemically treated granular materials. / Shahin, G.; Cil, M.; Buscarnera, Giuseppe.

In: Geotechnique Letters, Vol. 8, No. 1, 01.03.2018, p. 32-39.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Cil, M.

AU - Buscarnera, Giuseppe

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