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035			_a.b10228603
099		9	_aAIT Thesis no. 345
100	1		_aLin, Ton-tai
245	1	0	_aEffect of some measurable soil parameters on bubbling pressure
260			_aBangkok : _bAsian Institute of Technology, _c1971
300			_a66 p.
490	1		_aThesis ; _vno. 345
500			_aA thesis submitted in partial fulfillment of the requirements for the Degree of master of Engineering of the Asian Institute of Technology, Bangkok, Thailand.
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1971
520			_aThe bubbling pressure of a porous medium is defined as the capillary pressure at which the non-wetting fluid is first continuous through the medium. It is very important soil parameter in characterizing a partially saturated flow. The purpose of this thesis is to study the effects of pertinent soil parameters and fluid properties on the bubbling pressure. A capillary tube model analogy was employed to develop an equation representing the bubbling pressure as a function of soil parameters and properties of fluid. The soil parameters being con sidered were porosity, characteristic diameter of soil particle, and a coefficient which is a function of the pore size distribution index. The fluid properties were surface tension and specific weight. Experiments ~'7cre conducted to verify the theoretical equation and determine tile coefficient. The media \·rnre selected to hav-e wide ranges of texture, porosity, grain size distrioution and pore size distribution. The wetting fluid used was distilled water and non wetting fluid was air,
650		0	_aSoil permeability
650		0	_aPorous materials
700	1		_aArbhabhirama Anat, _eChairperson
700	1		_aAckermann, Norbert L., _eExamination Committee
700	1		_aNiwat Daranandana, _eExamination Committee
710	2		_aAsian Institute of Technology, _eScholarship donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. 345
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B24441
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