02706nas|a2200241 i 450000500170000000800410001703500150005810000220007324500940009526000520018930000150024149000270025650001350028352016520041850200570207065000280212770000320215570000410218770000500222871000620227881000590234085600650239920260818175450.0011200s2000    th  u m rtt  00|  a1eng d  a.b118166480 aBurut Tangthansup10aRate effect of soft Bangkok clay by means of constant rate of strain consolidometer tests  aBangkok :bAsian Institute of Technology,c2000  a144 leaves1 aThesis ;vno. GE-99-17  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering  aConstant rate of strain consolidation tests with radial drainage condition were conducted to investigate the horizontal consolidation behavior of soft Bangkok clay with emphasis on the strain rate effect. The drainage path is varied to investigate the effect of pore water pressure distribution across the sample. Sixteen (16) CRS tests with 1 cm diameter of center drain were conducted at various strain rates to compare with nine (9) CRS tests with 2 cm diameter of center drain. The pore water pressure distribution across the sample in the CRS tests were measured at two locations. The results show that the pore pressure distribution curves obtained at slow strain rates match well with those obtained from theoretical solution based on Barron's theory. The horizontal coefficients of consolidation and permeability in over-consolidated range are much higher than that in normally consolidated range with abrupt change occurred close to the preconsolidation pressure. The results show that the horizontal coefficients of consolidation and permeability are independent of the strain rate. The results indicated that there is an increase in apparent preconsolidation pressure with increasing strain rate, therefore it was concluded that some secondary compression had occurred during primary consolidation for soft Bangkok clay. In addition, the preconsolidation pressures obtained from 1 cm and 2 cm center drain CRS tests agree well. However, the horizontal coefficients of permeability and consolidation obtained from 1 cm center drain CRS tests are higher slightly than those obtained from 2 cm center drain CRS tests by about 1 to 2 times.  aThesis (M.Eng.) - Asian Institute of Technology 200010aSoil consolidation test1 aLin, Der Guey,eChairperson0 aTian Ho Seah,eExamination Committee1 aBalasubramaniam, A.S.,eExamination Committee2 aMahanakorn University of Technology, eScholarship donor 2 aAsian Institute of Technology.tThesis ;vno. GE-99-17  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B11780