Shrinking and swelling properties of two Canadian clays / proprietes de retrait et de gonflement de deux argiles canadiennes

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Volume1, Div. 3A
Pages851855; # of pages: 5
Subjectmarine clay; lacustrine clay; swelling; shrinkage; argile lacustre; gonflement ( alteration); retrait (alteration)
AbstractDimension/water-content relationships were measured during shrinkage and after saturation on wetting for a low swelling marine clay from the Ottawa-St. Lawrence River valley, and a high swelling lacustrine clay from Central Canada. The marine clay showed about equal horizontal and vertical total shrinkage. Swelling was reduced with decreasing water content to which the samples were dried and with the number of dry-wet cycles. Undisturbed samples with random particle orientation showed higher swelling than remoulded samples where parallel orientation would exist over small distances. In the lacustrine clay, vertical shrinkage exceeded horizontal shrinkage by a factor of three. Swelling was highest for the undisturbed sample and was greater in the vertical than horizontal direction. Remoulding destroyed the natural orientation and decreased swelling. Swelling as a function of particle orientation for the two clays is discussed.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number6347
NPARC number20377566
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Record identifier2a481671-9ad0-40af-8501-c3e71520ad20
Record created2012-07-24
Record modified2016-05-09
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