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EFFECT OF CLAY ON THE ACCURACY OF THE HYDROMETER METHOD
Author(s) -
MADHAV M. R.,
SUBRAMANYA K.
Publication year - 1971
Publication title -
sedimentology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.494
H-Index - 108
eISSN - 1365-3091
pISSN - 0037-0746
DOI - 10.1111/j.1365-3091.1971.tb00223.x
Subject(s) - suspension (topology) , viscosity , specific gravity , decantation , geology , geotechnical engineering , mineralogy , soil science , mathematics , materials science , chemistry , chromatography , composite material , homotopy , pure mathematics
Even small colloidal clay fractions in suspension affect markedly the results from a hydrometer test. The discrepancies are due to non‐consideration of specific gravity and relative viscosity of the actual clay‐water suspension. Therefore, actual—i.e., experimentally or otherwise determined—values of specific gravity and relative viscosity should be used instead of the conventionally used values for the specific gravity and the coefficient of viscosity. Expressed in terms of this study, in equations 1 and 2 the values of G 1 and n should be replaced by G 1 1 and n r, respectively. Another simple but time‐consuming remedy is to remove the clay content from the soil by repeated decantation before conducting the hydrometer analysis.