(Received 24 June 2002; accepted 21 July 2003)
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In deep stabilization of soft soils in Sweden, dry binders such as cement and quicklime are normally used. Mixing dry binders into the soils will lead to a lower degree of saturation than that of the unstabilized soils, which normally are fully saturated before stabilization. In triaxial testing of stabilized soils, the applied back pressure chosen for the tests may affect the degree of saturation and in turn also the results obtained. A number of triaxial tests have been performed using different back pressures in order to study the effect on measured shear strengths of stabilized organic soils and clays. The effect of rate of strain on the strength of stabilized organic soils was also studied in a series of tests. The results show that in particular the chosen back pressure can greatly affect the strength of stabilize soils, although the rate of strain can also exert an influence on the measured strength.
Swedish Geotechnical Institute, Linkoping,
Stock #: GTJ11453