02536nam a2200253   450000500170000000800410001703500150005810000280007324500940010126000520019530000140024749000270026150001360028850200580042452014230048265000200190565000280192570000370195370000500199070000430204071000750208381000590215885600650221720260818175202.0040998         th                  eng    a.b117236221 aPatawaran, Ma. Aries B.10aPVD improvement of reconstituted soft clay with and without electro-osmotic consolidation  aBangkok :bAsian Institute of Technology,c1998  a83 leaves1 aThesis ;vno. GE-97-04  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of  Engineering, School of Civil Engineering  aThesis (M.Eng.) - Asian Institute of Technology, 1998  aThe effect of prefabricated vertical drains (PVD) with and without electro-osmosis  on reconstituted soil was investigated. The effect of increasing surcharge while  maintaining the same voltage gradient was also examined. The test was conducted on  reconstituted soil from AIT. An initial 50 KPa pressure was applied until 90%  consolidation. Prefabricated drains L:Ut to 20m::n width were then installed at 20cm  spacing in a square pattern. The load was increased to 75 KPa and the effect of the drains  was observed. Afterwards, electro-osmosis was applied using a voltage gradient of 80  V /m while maintaining the same overburden pressure . The surcharge was then increased  to 82.5 KPa while the voltage gradient remained constant. Test results indicate that the  reduction in the water content of the soil was almost the same for both PVD with and  without electro-osmosis. An increase in the overburden pressure however, can triple the  moisture reduction. Application of electro-osmosis brought about an increase in the shear  strength at the anodes. Larger settlements and smaller differential settlements under  higher overburden pressures was observed with bigger values occurring at the anodes. An  increase in the liquid and plastic limit was also discovered. It was also found out that  there is a decrease in the void ratio of the soil with higher values observed at the anodes  than at the cathodes.  0aVertical drains 0aSoil consolidation test1 aBergado, Dennes T.,eChairperson1 aBalasubramaniam, A.S.,eExamination Committee1 aGuey, Lin Der, eExamination committee2 aAsian Institute of Technology Partial Scholarship, eScholarship donor2 aAsian Institute of Technology.tThesis ;vno. GE-97-04  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B12762