An energy based parameter for the assessment of aggregate bond energy

RAINE S.R. and SO H.B. (1993) An energy based parameter for the assessment of aggregate bond energy. Journal of Soil Science, 44 2: 249-259. doi:10.1111/j.1365-2389.1993.tb00449.x


Author RAINE S.R.
SO H.B.
Title An energy based parameter for the assessment of aggregate bond energy
Journal name Journal of Soil Science   Check publisher's open access policy
ISSN 1365-2389
Publication date 1993-01-01
Sub-type Article (original research)
DOI 10.1111/j.1365-2389.1993.tb00449.x
Open Access Status Not yet assessed
Volume 44
Issue 2
Start page 249
End page 259
Total pages 11
Subject 1111 Nutrition and Dietetics
Abstract The energy applied to a soil‐water suspension by an ultrasonic probe was determined for seven vertisol soils using calorimetric techniques. The rate of energy consumed by aggregate dispersion during sonification was calculated as the difference between the energy components measured before and after complete dispersion. Dispersive energy consumption was found to vary significantly during sonification and significant differences (P<0.05) were found between soils for the total dispersive energy required for complete dispersion. The soil dispersion characteristic curves, which relate the dispersive energy consumption during sonification to the quantity of <2 μm and <20 μm material dispersed, were also significantly different between soils. Error analysis of the calorimetric technique revealed that the energy consumed by complete dispersion is calculated with a precision of ±0.5 J g−1. For the soils studied, this was smaller than the observed variance in total dispersive energy consumed suggesting sample variability was the major source of variation. The ultrasonic technique was also used to determine the equivalent total energy applied and the amount of energy consumed by aggregate breakdown and dispersion during 30 min of end‐over‐end shaking. No significant difference (P<0.05) was found between soils for the total energy applied. However, a significant difference (P<0.05) was observed between soils for the quantity of dispersive energy required to produce the equivalent end‐over‐end dispersion. Copyright
Q-Index Code C1
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 27 Sep 2016, 13:45:54 EST by System User