Lime Stabilization of bentonite sludge from tunnel boring

D. Castro-Fresno, D. Movilla-Quesada, A. Vega-Zamanillo, M.A. Calzada-Pérez

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Stabilization of soils with conglomerate materials applied to the improvement of road embankments and sub-grades, is one of the best alternatives from a functional, environmental and economic point of view. One of the main advantages of using lime as a binder is the improvement of soil's mechanical properties.

This work shows the results obtained from lime treatment of four bentonite sludge samples obtained from the tunnel boring machine. The study is based on mineralogical, chemical, geotechnical and mechanical characterization tests of the bentonite sludge mixture with the optimal proportion of 3% lime, achieving improvements of 80% compared with the initial sludge mechanical properties.
Original languageEnglish
Pages (from-to)250-257
Number of pages8
JournalApplied Clay Science
Issue number3
Early online date30 Nov 2010
Publication statusPublished - Feb 2011
Externally publishedYes


  • Sludge
  • Lime
  • Stabilization
  • Sub-grade
  • Embankments


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