A laboratory test program was conducted to evaluate the one-dimensional (1D) compression and creep properties of intact sand (and silty-sand) samples from a deep borehole at the Malamocco Inlet to the Venice Lagoon. The tests were performed with a constant rate of strain consolidometer and included special procedures for trimming the frozen samples and measuring strains during thawing and backpressure sat- uration. The specimens had variable ␣ne fractions ranging from 6 to 21% and mica contents ranging from 1 to 10%. The results con␣rmed that there is a strong correlation between the creep rate coef␣cient and the compressibility index and between the swelling index and mica content. The compression behavior in all tests is well described by a nonlinear compression model with a unique limiting compression curve and a vari- able transition parameter that re␣ects the ␣nes and mica content. Creep tests performed at different con␣ning pressures are also well represented by a simple two-parameter model

Compression and Creep of Venice Lagoon Sands

SANZENI, Alex;COLLESELLI, Francesco
2012-01-01

Abstract

A laboratory test program was conducted to evaluate the one-dimensional (1D) compression and creep properties of intact sand (and silty-sand) samples from a deep borehole at the Malamocco Inlet to the Venice Lagoon. The tests were performed with a constant rate of strain consolidometer and included special procedures for trimming the frozen samples and measuring strains during thawing and backpressure sat- uration. The specimens had variable ␣ne fractions ranging from 6 to 21% and mica contents ranging from 1 to 10%. The results con␣rmed that there is a strong correlation between the creep rate coef␣cient and the compressibility index and between the swelling index and mica content. The compression behavior in all tests is well described by a nonlinear compression model with a unique limiting compression curve and a vari- able transition parameter that re␣ects the ␣nes and mica content. Creep tests performed at different con␣ning pressures are also well represented by a simple two-parameter model
File in questo prodotto:
File Dimensione Formato  
Sanzeni et al. 2012.pdf

gestori archivio

Tipologia: Full Text
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 1.26 MB
Formato Adobe PDF
1.26 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11379/132329
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 9
social impact