Prediction of the limiting void ratio of clayey soils after drying

Bardanis, ME; Kavvadas, MJ

dc.contributor.author	Bardanis, ME	en
dc.contributor.author	Kavvadas, MJ	en
dc.date.accessioned	2014-03-01T02:50:52Z
dc.date.available	2014-03-01T02:50:52Z
dc.date.issued	2006	en
dc.identifier.issn	08950563	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35164
dc.subject.other	Atmospheric composition	en
dc.subject.other	Correlation methods	en
dc.subject.other	Drying	en
dc.subject.other	Mathematical models	en
dc.subject.other	Measurement theory	en
dc.subject.other	Physical properties	en
dc.subject.other	Porosity	en
dc.subject.other	Saturation (materials composition)	en
dc.subject.other	Mechanical parameter	en
dc.subject.other	Unsaturated soils	en
dc.subject.other	Void ratio	en
dc.subject.other	Clay	en
dc.title	Prediction of the limiting void ratio of clayey soils after drying	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1061/40802(189)88	en
heal.identifier.secondary	http://dx.doi.org/10.1061/40802(189)88	en
heal.publicationDate	2006	en
heal.abstract	Samples of two clays and two marls consolidated or reconstituted to various initial void ratios were left to dry to constant volume and the limiting lower value of the void ratio at that state, er, was measured. Drying of the initially fully saturated samples of each soil was achieved by leaving the samples under atmospheric conditions. The data presented suggest, at first glance, that limiting lower void ratio after drying, er, for each soil increases as the initial void ratio of the soil increases. Normalizing er by the initial void ratio results in the ratio e r/eo increasing as the initial void ratio decreases. Plotting the ratio er/eo for all soils against initial void ratio normalized by the void ratio at the liquid limit eL (= wLGs) shows that the results from all soils lie very close to a unique line, which passes through point [eo/eL=0, er/eo=1] and has a very high correlation coefficient. This linear relation appears valid for values of eo/eL between 0.6 and 1.7. Using the relation between er/eo and e o/eL the limiting lower void ratio after drying can be predicted when the initial void ratio of the soil eo (expressing the initial state of the soil) and its liquid limit wL and specific gravity Gs (expressing the nature of the soil) are known. Also, according to this relation, er exhibits a maximum value as e o increases and then starts to decrease again as eo increases further. The empirical relation derived may be used for the prediction of a mechanical parameter of use to modern constitutive modeling of unsaturated soils such as the limiting lower void ratio after drying. It may also be used as a means to study unsaturated soil behavior as far as the evolution of e r with initial void ratio and physical properties of soils is concerned. Copyright ASCE 2006.	en
heal.journalName	Geotechnical Special Publication	en
dc.identifier.doi	10.1061/40802(189)88	en
dc.identifier.issue	147	en
dc.identifier.spage	1085	en
dc.identifier.epage	1096	en