Effect of temperature changes on mechanical and compression properties of clays

Project no. 22282 · Status: Kapanmış (Yayın bekleniyor) · 2022

Summary

<p>The&nbsp;increasing&nbsp;application&nbsp;of&nbsp;infrastructures&nbsp;such&nbsp;as&nbsp;high-level&nbsp;nuclear&nbsp;waste&nbsp;repositories,&nbsp;energy&nbsp;geostructures,&nbsp;and&nbsp;deep&nbsp;foundations&nbsp;has&nbsp;highlighted&nbsp;the&nbsp;importance&nbsp;of&nbsp;understanding&nbsp;the&nbsp;thermo-mechanical&nbsp;behavior&nbsp;of&nbsp;clay&nbsp;soils.&nbsp;Exposure&nbsp;to&nbsp;elevated&nbsp;temperatures&nbsp;under&nbsp;varying&nbsp;stress&nbsp;states&nbsp;can&nbsp;significantly&nbsp;alter&nbsp;soil&nbsp;response.&nbsp;This&nbsp;thesis&nbsp;investigates&nbsp;the&nbsp;effect&nbsp;of&nbsp;confining&nbsp;pressure&nbsp;on&nbsp;thermally&nbsp;induced&nbsp;deformations&nbsp;in&nbsp;normally&nbsp;consolidated&nbsp;clays&nbsp;through&nbsp;thermally&nbsp;controlled&nbsp;oedometer&nbsp;and&nbsp;shear&nbsp;box&nbsp;tests.&nbsp;The&nbsp;results&nbsp;indicate&nbsp;that&nbsp;thermo-mechanical&nbsp;behavior&nbsp;is&nbsp;strongly&nbsp;governed&nbsp;by&nbsp;the&nbsp;mechanical&nbsp;properties&nbsp;and&nbsp;mineralogical&nbsp;composition&nbsp;of&nbsp;the&nbsp;clay,&nbsp;as&nbsp;well&nbsp;as&nbsp;the&nbsp;prevailing&nbsp;stress&nbsp;state.&nbsp;The&nbsp;findings&nbsp;contribute&nbsp;to&nbsp;an&nbsp;improved&nbsp;understanding&nbsp;of&nbsp;clay&nbsp;behavior&nbsp;under&nbsp;coupled&nbsp;thermal&nbsp;and&nbsp;mechanical&nbsp;loading&nbsp;and&nbsp;provide&nbsp;practical&nbsp;implications&nbsp;for&nbsp;the&nbsp;design&nbsp;and&nbsp;stability&nbsp;assessment&nbsp;of&nbsp;thermo-active&nbsp;geotechnical&nbsp;structures&nbsp;in&nbsp;soft&nbsp;clay&nbsp;deposits.</p>

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