A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Freezing potentials in wet clays. II. Specific systems
Abstract With several variables controlled, electrical potentials were studied during the freezing of a sludge of Regina clay, which consists mainly of bentonite with some illite and quartz. An initial potential Vi of 28.5 mV at 20°C was observed in natural Regina clay. Vi was slightly greater when the clay was homoionic, containing K+, Ca++, or Fe+++ ions. Changes of Vi with pH confirmed that Vi was electrokinetic in nature. Freezing potentials were slightly higher in the homoionic soils than in untreated soil, but were not significantly affected by moisture content within the range tested. Aging of the sludge had a pronounced effect on the freezing potential, especially for the homoionic samples. The amount of moisture migration toward the freezing front depended on the ionic content, being greater for K+ and Fe+++; an explanation for this effect is offered. Plans for future study are discussed.
Freezing potentials in wet clays. II. Specific systems
Abstract With several variables controlled, electrical potentials were studied during the freezing of a sludge of Regina clay, which consists mainly of bentonite with some illite and quartz. An initial potential Vi of 28.5 mV at 20°C was observed in natural Regina clay. Vi was slightly greater when the clay was homoionic, containing K+, Ca++, or Fe+++ ions. Changes of Vi with pH confirmed that Vi was electrokinetic in nature. Freezing potentials were slightly higher in the homoionic soils than in untreated soil, but were not significantly affected by moisture content within the range tested. Aging of the sludge had a pronounced effect on the freezing potential, especially for the homoionic samples. The amount of moisture migration toward the freezing front depended on the ionic content, being greater for K+ and Fe+++; an explanation for this effect is offered. Plans for future study are discussed.
Freezing potentials in wet clays. II. Specific systems
Rao, S.Ramachandra (author) / S.J. Hanley, Thos.O'D. (author)
Cold Regions, Science and Technology ; 3 ; 169-175
1980-01-01
7 pages
Article (Journal)
Electronic Resource
English
Freezing potentials in wet clays. I. Early results
| Elsevier | 1980
Freezing shrinkage in compacted clays
| Engineering Index Backfile | 1966
Influence of burning temperature on resistance to freezing of clays
| Engineering Index Backfile | 1935
Founding depth in clays in regions of deep seasonal freezing (discussion)
| Online Contents | 1971
A note on electrical freezing and shorting potentials
| Online Contents | 2005