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1、20ChangeinporesizedistributionowingtosecondaryconsolidationofclaysMaterialsandResearchBranch,NewBrunswickDepartmentofTransportation,P.O.Box6000,Fredericton,N.B.,CanadaE3B5HlANDDepartmentofCivilEngineering,TheUniversityofCalgary,2500UniversityDr.N.W.,Calgary,Alta.,CanadaT2NIN4ReceivedNovember21,1988
2、AcceptedAugust22,1990Thepreliminaryresultsofastudyusingmercury-intrusionporosimetryonfreeze-driedsamplesofclayeysoilsarepresented.Theamountofsecondaryconsolidationhasbeenvariedforseveralsamplesofthreesoiltypesbyholdingtheconsolidationstresssteadyat120kPafordifferentdurations.Examinationoftheporesiz
3、edistributioncurvesrevealsthatsecondaryconsolidationcannotbeduesolelytothedeformationofmicropores.Therelativedegreeofchangeintotal,freeandentrappedporosityappearstoberelatedtotheproportionofeachinitiallyinthesample.Keywords:clays,consolidation,compressibility,fabric-structureofsoils,secondarycompre
4、ssion.Lesrksultatsprkliminairesd'uneCtudeutilisantlaporosimktrieaintrusiondemercuresurdesCchantillonsdesolsargileux1yophilisCssontprCsentCs.L'onafaitvarierlaquantitCdeconsolidationsecondairedansplugeursCchantillonsdetroistypesdesolenmaintenantlacontraintedeconsolidationconstantea120kPapourdiffkrent
5、e'sdurCes.L'examendescourbesdedistributionporosimCtriquemontrentquelaconsolidationsecondairenepeutpw&tredueseulementaladCformationdesmicropores.LedegrtrelatifdechangementdesporosimktrieslibresetpibgCessembleCtrerelit5alaproportiondechacuneprCsenteinitialementdans1'Cchantillon.Motscl6.s:argiles,cons
6、olidation,compressibilitC,fabrique-structuredessols,compressionsecondaire.[TraduitparlarCdactionlCan.Geotech.J.28,20-24(1991)Introductiontimedependent.YongandMcKyes(1969)consideredsec-Secondaryconsolidationhaslongbeenutilizedasause-ondarycompressiontobetheresultofadjacentparticlesForpersonaluseonly
7、.ful,ifsomewhatarbitrary,conceptforsettlementanalysis.slidingrelativetoeachotherowingtotheactionandchangeInpracticetherate-settingmechanismisviewedastheper-ofmicrostresses.TaylorandMerchant(1940)describedse
