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The Apparent Swelling Behavior of Some Moderately Dispersed Bentonites
Author(s) -
Rollins Myron B.,
Hallam Merrill J.,
Myers Victor I.
Publication year - 1961
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/sssaj1961.03615995002500050029x
Subject(s) - bentonite , swelling , dispersion (optics) , volume (thermodynamics) , swell , geotechnical engineering , swelling capacity , geology , materials science , composite material , oceanography , physics , quantum mechanics , optics
A study was conducted to measure the swelling rate of various dispersed bentonites. The purpose was to characterize the role of continued swelling of clay micelles in the sealing of irrigation conveyance channels with seepage‐transported bentonite. Centrifugal forces were used to separate hydrated, expanded bentonite micelles from the free water of a dispersed system. Eight bentonite samples were successfully settled and their hydrated volumes measured. Seven of the eight bentonites measured continued to swell with time, although most of the samples reached a large percentage of their total expansion within 15 minutes after dispersion. Some bentonites showed a substantial amount of continued swelling. The time required to reach maximum volume for the seven bentonites varied from 3 to 21 days. The results suggest that the phenomenon of continued swelling of bentonites may have a role in the sealing of irrigation conveyance channels with seepage‐transported bentonite.