03506cas|a2200409 i 4500 20260818173752.0 070699s1982 th uu m rtt 00| a1eng d .b10517704 AIT Thesis no. GT-81-06 Handali, Samuel Pre-consolidation with vertical drains influence of the permeability of the drain laboratory test and finite difference analysis Bangkok : Asian Institute of Technology, 1982 134 p. Thesis ; no. GT-81-06 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology Thesis (M.Eng.) - Asian Institute of Technology, 1982 A study on the effect of drain resistance on the rate of consolidation of soils with vertical drains was conducted experimentally as well as analytically. the experiments which were named the Vertical Drain Model Tests, were carried out in a Rowe Oedometer Apparatus, having an inner diameter of 6". The tests were carried out on undisturbed samples, having thickness of 2". In order to force the excess pore water pressure to dissipate radially, vertical drain, having a diameter of 0.5" was installed at the center of each sample. The drain materials used were composed of mixtures of sand - dry clay powder with different proportions by weight, to obtain drain materials with different permeabilities. Permeability tests for each drain material were conducted in a Triaxial apparatus. With this method, it was possible to measure the coefficient of permeability of each drain material at different axial effective stresses. The results of the Vertical Drain Model Tests were compared with the analytical solutions available, based on the free strain theory and the equal strain theory. Finite difference method was used to solve the analysis based on free strain theory. A computer program has been prepared for this purpose. For the equal strain theory, the formula developed by HANSBO (1979) was used. In both analysis, the effect of drain resistance and variations of consolidation parameters during consolidation process were included. A good agreement between the experimental results and the results of the analysis has been obtained. Soil consolidation test Tomiolo, A., Chairperson Ohta, Hideki, Examination Committee Prinzl, Frediric, Examination Committee Carl Duisberg Gesellachaft, Scholarship donor Asian Institute of Technology. Thesis ; no. GT-81-06 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B21219 .b10517704 mnait s 240905 2 951012 m a s 0 mnait mnait mnarc 20 40 Barcode : 30050003010286 CREATED : 1995-10-15 RECORD # : i10649529 LPATRON : 1020923 LCHKIN : 2009-02-10 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050120657092 CREATED : 1995-10-15 RECORD # : i10649530 LPATRON : 1022512 LCHKIN : 2010-09-20 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 4 TOT RENEW : 8 Barcode : 30050160070347 CREATED : 2016-05-17 RECORD # : i12979661 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 90725 90725 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. GT-81-06 30050003010286 2026-08-18 17:37:52 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. GT-81-06 30050120657092 2026-08-18 17:37:52 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. GT-81-06 30050160070347 2026-08-18 17:37:52 1 2026-08-18 40