Assessment of soil structural stability using ultrasonic dispersion

Ahmed, F.B.

South African Geographical Journal 79(2): 115-119

1997


ISSN/ISBN: 0373-6245
DOI: 10.1080/03736245.1997.9713633
Accession: 030199311

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Abstract
Structural stabilities of some soils were measured on aggregates sieved 2-1 mm diameter. A critical comparison of three stability measurements on the samples showed that the ultrasonic dispersion ratio (DR (sub u) ) gave better precision and reproducibility than wet sieving and the dispersion ratio. DR (sub u) showed high correlations with organic carbon, hydraulic conductivity and calcium carbonate equivalent. A hybrid index of structural stability is proposed, to predict signs of likely structural instabilities of soils when subjected to mechanical and osmotic stresses.