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Linear Extensibility as Calculated from Natural‐Clod Bulk Density Measurements
Author(s) -
Grossman R. B.,
Brasher B. R.,
Franzmeier D. P.,
Walker J. L.
Publication year - 1968
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/sssaj1968.03615995003200040041x
Subject(s) - extensibility , bar (unit) , water content , linear density , bulk density , materials science , dryness , linear relationship , tension (geology) , surface tension , composite material , soil science , thermodynamics , soil water , environmental science , geotechnical engineering , geology , mathematics , physics , meteorology , statistics , ultimate tensile strength , medicine , surgery , computer science , operating system
Use of a coating that is flexible permits measurement of bulk density of natural clods at more than one moisture content. Linear extensibility, expressed as a coefficient (COLE) or as change in horizon thickness, can be calculated from the increase in bulk density between the water content at ⅓‐bar tension and oven dryness. Extensibility data are given for a Marias soil (Entic Chromoxerert). Composition of the Marias soil remains similar with depth but the structure changes. COLE values are affected by the change in structure as are also PVC test results, but liquid and plastic limit values are affected little.