oa Civil Engineering = Siviele Ingenieurswese - A hypothetical clay model to describe free swell in active clays
|Article Title||A hypothetical clay model to describe free swell in active clays|
|© Publisher:||South African Institution Of Civil Engineering (SAICE)|
|Journal||Civil Engineering = Siviele Ingenieurswese|
|Affiliations||1 *Division of Building Technology, CSIR **Pretoria University|
|Publication Date||Jul 1992|
|Pages||241 - 242|
|Keyword(s)||Active clay soils, Clay model, Foundation design, Free swell, Mass housing and Swell prediction equations|
Great emphasis has been placed on the provision of adequate mass housing. The large number of these houses that would be constructed on active clay places a responsibility on the engineer to come up with an optimum foundation design. In this paper a clay model, with which it is possible to explain the free swell of an active clay, was presented. The clay model was used to postulate the existence of a swell threshold suction in active clay and then to prove it using laboratory results. This threshold suction holds implications for the more advanced heave prediction methods. Lastly, a few simple but rational free swell prediction equations were also presented.
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