Abstract
The research of consistency limits according to Atterberg is of key importance in soil mechanics because it determines, in a simple way, results of interactions between solid and liquid phases in soils, and thus provides possibility to classify them in groups with similar mechanic properties. In most cases, the results of these investigations provide a good basis for predicting other properties such as deformability, expansion, hydraulic conductivity and strength of soils. This proves that basis factors influencing the values of consistency limits and other mechanic properties are the same. It is known that the values of consistency limits primarily depend on the type and quantity of clay minerals in soils. The article focuses on experimental evidence of dependence between the quantity of water at the liquid limit for soils and type, portion and specific surface of clay grains. Experiments were performed with monomineral soils, their mixtures and composed samples of clay- and non-clay components. It was established that in parallel orientation of clay particles the quantity of water between grains at liquid limit is dependent on their external specific surface.
Highlights
The research of consistency limits according to Atterberg is of key importance in soil mechanics because it determines, in a simple way, results of interactions between solid and liquid phases in soils, and provides possibility to classify them in groups with similar mechanic properties
This proves that basis factors influencing the values of consistency limits and other mechanic properties are the same
It is known that the values of consistency limits primarily depend on the type and quantity of clay minerals in soils
Summary
Preiskava konsisten~nih mej po Atterbergu je v mehaniki zemljin osnovnega pomena, saj na zelo enostaven na~in dolo~a posledice interakcije trdne in teko~e faze v zemljinah in s tem daje mo‘nost razvrstitve le teh v skupine s podobnimi mehanskimi lastnostmi. Rezultati teh preiskav nudijo v ve~ini primerov zelo dobro osnovo za napovedovanje ostalih lastnosti kot so deformabilnost, nabrekljivost, hidravli~na prepustnost in trdnost zemljin, kar ka‘e na to, da so osnovni dejavniki, ki vplivajo na vrednosti konsisten~nih mej in ostalih mehanskih lastnosti enaki. Da so vrednosti konsisten~nih mej primarno odvisne od vrste in koli~ine glinenih mineralov v zemljinah. V prispevku je podana eksperimentalno ugotovljena odvisnost med koli~ino vode na meji ‘idkosti zemljin in vrsto, dele‘em ter specifi~no povr{ino glinenih zrn. Ugotovljeno je bilo, da je pri paralelni orientaciji glinastih delcev, koli~ina vode med zrni na meji ‘idkosti linearno odvisna od njihove zunanje specifi~ne povr{ine
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