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THE SHRINKAGE OF CLAY SOILS DURING IMPREGNATION BY POLYETHYLENE GLYCOLS
Author(s) -
GREENEKELLY R.
Publication year - 1971
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.1365-2389.1971.tb01606.x
Subject(s) - shrinkage , peg ratio , wax , polyethylene glycol , soil water , polyethylene , chemistry , materials science , chemical engineering , composite material , organic chemistry , geology , soil science , finance , economics , engineering
Summary Linear measurements on a remoulded clay soil showed that the replacement of pore water by molten polyethylene glycol 6000 (PEG 6000) was responsible for the main contraction of the sample. Subsequent cooling of the wax resulted in only a small further shrinkage. The volumetric shrinkage of different clay soils on impregnation with PEG 6000 was about one‐half to three‐quarters of that on air‐drying. The contraction increased with increasing average molecular weight of the PEG fraction. Exchange of pore water with digol, O(CH 2 CH 2 OH) 2 , before impregnation with PEG 6000, decreased the total shrinkage by a further one‐third.