Premium
THE PLASTIC LIMIT, AS DETERMINED BY THE DROP‐CONE TEST, IN RELATION TO THE MECHANICAL BEHAVIOUR OF SOIL
Author(s) -
CAMPBELL D. J.,
STAFFORD J. V.,
BLACKWELL P. S.
Publication year - 1980
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1980.tb02060.x
Subject(s) - penetrometer , atterberg limits , geotechnical engineering , cohesion (chemistry) , drop (telecommunication) , penetration test , plasticity , soil test , water content , materials science , soil water , geology , soil science , engineering , subgrade , composite material , physics , telecommunications , quantum mechanics
Summary The variation with water content is examined of soil cohesion, soil‐metal friction, susceptibility to soil compaction, implement draught and the slope and intercept of the virgin compression line of critical state soil mechanics theory. For a given soil, all these relations are shown to exhibit turning points at a similar water content which corresponds to the cone penetrometer plastic limit, as determined with a drop‐cone penetrometer, rather than the Casagrande plastic limit. The cone penetrometer plastic limit, which can also be more reliably determined than the Casagrande plastic limit, is the better indicator of soil behaviour in the field and of the water content at which the soil changes from the brittle to the plastic state.