![]() For a soil, the value of the soil-dependent parameters can be determined from as little as four fallcone tests and substituted into the equation to estimate the plastic limit. Therefore, a linear equation with two soil-dependent parameters is developed for estimation of the plastic limit. Data of 26 soils, covering a wide range of liquid limits from 30% to 526%, show that the logarithm of depth of cone penetration against logarithm of water content relationship is linear. Specimen rings are made and used to replace the specimen cup so as to facilitate the preparation of specimens. The present investigation devotes itself to modification of the specimen preparation technique, examination of the relationship between depth of cone penetration and water content, and estimation of the plastic limit using the penetration depth against water content relationship. Results of previous studies on using the fall-cone test to determine the plastic limit of soils show that further research is warranted. ![]() FALL-CONE PENETRATION AND WATER CONTENT RELATIONSHIP OF CLAYS
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