Stabilising effects of different binders in some Swedish soils

Abstract

In Sweden, lime and lime–cement have been used for several decades as stabilising agents in deep stabilisation of soft soils. More recently, other types of binder have come into use, but so far only to a limited extent. In order to gather experience about the effect of various binders, laboratory tests have been performed on different types of soil stabilised with a range of binders. Lime, cement, fly ash and blast furnace slag in different combinations together with different admixtures, such as gypsum, silica fume and calcium chloride, have been used in the investigations. The variation in strength with type of binder has been studied, and comparisons have also been made with results from some previous investigations using different binders. The tests showed that there is no optimal, universal binder for stabilisation of the soils. Whereas some binders are robust, yielding good results in most types of soil, there are also binders that produce very good results in certain soils but poor results in others. Both similarities and differences in effects were found for different binders. En Suède, la chaux et une combinaison chaux-ciment ont été utilisés depuis plusieurs décennies comme agents stabilisants pour la stabilisation de sols mous. Plus récemment, d'autres types de liants ont été utilisé, mais de façon limitée. Dans le but d'acquérir de l'expérience concernant l'effet de différents liants, un certain nombre d'essais en laboratoire ont été exécutés sur différents types de sols stabilisés avec différents liants. La chaux, le ciment, les cendres, et les scories de haut fourneaux combinés dans différents mélanges avec du gypse, de la silice et du chloride de calcium ont éte utilisés dans ces essais. La variation de la résistance avec le type de liants a été étudié et des comparaisons ont été faites avec des essais provenant d'études antérieures de différents liants. Les essais n'ont pas résulté en un liant optimal universel, mais ils ont démontré que certains liants affichent de bons résultats dans la plupart des types de sols étudiés alors que certains autres liants montrent de bons résultats dans certains sols et des mauvais résultats dans d'autres. Des similitudes ainsi que des différences se rapportant à l'effet de différents liants ont été enregistées au cours des essais.

Influences of Curing Environment on Strength Performances of Shanghai Clayey Soil Reinforced with Palm Fiber

“…Many researches were focused on the mechanical qualities of soils reinforced with cement or lime cured in a humid condition [19][20][21][22][23][24][25][26][27][28][29]. However, a large number of factors are known to affect the mechanical properties of treated soils [30].…”

Stabilization of Clayey Silt Soil Using Small Amounts of Petrit T

“…the water content is lower than the plastic limit. [34] has pointed out that the reduction in water content for the natural soil from around the liquid limit towards the plastic limit is accompanied by an increase in soil strength, which will be discussed later in this study. The effect of Petrit T content and curing time on the soil density is shown in Figure 9.…”

Strength properties of Port Said soft clay stabilized by different binders

“…The friction angles of mixed soils were compared with the frict ion angles of orig inal soilsas shown in figure (12). According to the results the friction angle has increase for both mixed soils with all used binders however the increase was higher for cement then lime binders than the other used binders.…”

“…Taki [9] measured the unconfined compressive strength of different soil types treated with cement. Taki reported that, at the same cement content,coarse grained soil exhibited more increase in strength compared tofine grained soil.Åhnberg [10] studied the stress parameters of cement stabilized soil and concluded that the increase of shear strength is affected by the soil type, the initial water content and by the water/cement ratio.Uddin [11] found that the final compressive strength of the stabilized clay increases with the increase of cement content.Åhnberg [12] studied the difference in strength levels and rate of strength increase between different types of binders" composition and three Swedish soils.The conclusion of the performed unconfined compression tests was that, the optimal b inder composition found for one soil would not be direct ly applicable to another soil as it varies considerably. Åhnberg [13] performed a series of laboratory tests on four soils stabilised with different types of binders to improve the understanding of the strength behaviour of stabilised soils.…”