Journal Published Online: 26 May 2009
Volume 32, Issue 4

A Note on the Determination of Plastic Limit of Fine-Grained Soils



Plastic limit of fine-grained soils is conventionally determined in the laboratory by the soil thread rolling method. Many adverse comments have been recorded in the geotechnical engineering literature on the method about its reproducibility and operator dependency. The present experimental study, which is based on a well-planned and meticulously executed experimental program, critically evaluates the effect of size of the rolled soil thread on the plastic limit of fine-grained soils and the operator dependency of the results. The results have shown that if the plastic limit tests are performed by a trained operator, then consistent results can be obtained and that the effect of size of the rolled soil thread on plastic limit is negligibly small.

Author Information

Prakash, K.
Dept. of Civil Engineering, Sri Jayachamarajendra College of Engineering, Mysore, India
Sridharan, A.
Indian Institute of Science, Bangalore, India
Prasanna, H.
Dept. of Civil Engineering, National Institute of Engineering, Mysore, India
Pages: 3
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Stock #: GTJ101960
ISSN: 0149-6115
DOI: 10.1520/GTJ101960