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Correlation of Soil Plasticity with Amorphous Clay Constituents
Author(s) -
McNabb D. H.
Publication year - 1979
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1979.03615995004300030037x
Subject(s) - plasticity , atterberg limits , amorphous solid , materials science , soil water , dissolution , mineralogy , soil science , chemistry , geology , composite material , crystallography , organic chemistry
The percentage of amorphous constituents removed from the clay size fraction of western Oregon soils by kinetic dissolution was significantly correlated with soil plasticity. Soil plasticity was identified by the plasticity angle which was defined by the angle, relative to the ‘A’ line intercept, where the Atterberg limits of air‐dried soil occurred on the Casagrande plasticity chart. An exponential correlation between the plasticity angle and the sum of the amorphous Al 2 O 3 and SiO 2 was more significant than between the plasticity angle and the sum of the amorphous Al 2 O 3 , SiO 2 , and Fe 2 O 3 ( r 2 = 0.88** and 0.76**, respectively). The Atterberg limits of the soil were not directly correlated with the percentage of amorphous constituents.