Unformatted text preview: l-~ ~___ Stress, cr'v a'o a'e When an OC soil is loaded, loading occurs back along the unload curve, not the virgin curve, until reaching the preconsolidation pressure. Therefore, an over-consolidated soil is generally a good foundatioo mate.tiaLsince_we can.add.",-stre.ss.Aq:v. .~ (gJ; -<>'0) before getting£n to the ste(lQer.virgiLL9.u[Ve,(j.J',. ..wJ.WleLCbeogg,in void ratio), _-When building on OC soils there are two possible situations depending on the relative magnitudes of the new effective stress and the preconsolidation pressure. If the new effective streJ;s.is-less.tban-lbapr.e.s;onsolidation then loading occurs ool}Lakmg the reload 'Curve. If the new effective stress exceeds t e preconsolidation then loading "ilLQ.cQur partly along the re oa curve and parj)y aloog.the_virgii1.Curve,---=-. .---"'-----.-...
View Full Document
This note was uploaded on 02/10/2012 for the course CEG 4012 taught by Professor Staff during the Fall '08 term at University of Florida.
- Fall '08