Natural pozzolanas are very reactive with calcium oxide (CaO) provided by lime, the effectiveness of the stabilisation mainly depending on the amount of stable products created in the high alkali solution. Nevertheless, systematic studies on the suitability of pyroclastic soils to lime stabilisation and the effects of the treatment parameters on the engineering properties of the stabilised material are still limited. In the paper some results of a large experimental study allow an overview on the suitability and the effectiveness of lime stabilisation of pyroclastic soils. Although for these soils the clay fraction is lower than that typical of the soils commonly treated with lime, it has been found that the addition of lime improves relevantly their mechanical behaviour, increasing shear strength and reducing the one dimensional compressibility.
Mechanical behaviour of two lime stabilised pyroclastic soils
CECCONI, Manuela;
2013
Abstract
Natural pozzolanas are very reactive with calcium oxide (CaO) provided by lime, the effectiveness of the stabilisation mainly depending on the amount of stable products created in the high alkali solution. Nevertheless, systematic studies on the suitability of pyroclastic soils to lime stabilisation and the effects of the treatment parameters on the engineering properties of the stabilised material are still limited. In the paper some results of a large experimental study allow an overview on the suitability and the effectiveness of lime stabilisation of pyroclastic soils. Although for these soils the clay fraction is lower than that typical of the soils commonly treated with lime, it has been found that the addition of lime improves relevantly their mechanical behaviour, increasing shear strength and reducing the one dimensional compressibility.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
