02989nam a2200433 4500 20260818094844.0 080198 th eng .b10226400 AIT Thesis no. 778 Liu, Chun-lanng Effect of adsorbed magnesium on soil hydraulic conductivity Bangkok : Asian Institute of Technology, 1975 66 p. Thesis ; no. 778 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science at the Asian Institute of Technology, Bangkok, Thailand . Thesis (M.Sc.) - Asian Institute of Technology, 1975 This research was conducted to find the effect of adsorbed magnesium on the soil hydraulic conductivity, and the main concern is the effect of adsorbed magnesium plus adsorbed sodium on hydraulic conductivity. Sixteen columns of a soil from central Thailand were prepared in the laboratory by leaching them with a laboratory preparation of 300 meq./litre electrolyte concentration salt solutions. The salt solutions were made from sodium chloride, calcium chloride and magnesium chloride in different proportions, The hydraulic conductivities were then measured by applying a fixed head of 5 meq, /litre salt solutions. The experimental results indicated that adsorbed calcium improved the soil hydraulic conductivity, while adsorbed sodium reduced it. The soil with adsorbed magnesium alone had a lower conductivity than the calcium soil but higher than where sodium was absorbed alone. In the presence of sodium, however, adsorbed magnesium had a detrimental effect on the soil hydraulic conductivity. If the concentration of absorbed magnesium was 40% or more, the hydraulic conductivity was greatly decreased by the presence of 10% or more adsorbed sodium. Soil permeability Soil moisture Soil mechanics Brand, E.W., Co-Chairperson Petersen, J. L., Chairperson Moh, Za-Chieh, Examiantion Committee Okamoto, Masami, Examination Committee Paiboon Prabhudham, Examination Committee Asian Institute of Technology, Scholarship Donor Asian Institute of Technology. Thesis ; no. 778 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B24037 .b10226400 mnait x 260507 1 951012 m a x 0 mnait mnarc 20 40 Barcode : 30050003035663 CREATED : 1995-07-01 RECORD # : i11775014 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050160092580 CREATED : 2016-04-22 RECORD # : i12951067 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 34115 34115 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. 778 30050003035663 2026-08-18 09:48:44 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. 778 30050160092580 2026-08-18 09:48:44 2026-08-18 40