000			03797nam a2200385 4500
005			20260818213021.0
008			250398 th eng
035			_a.b10577208
099		9	_aAIT Thesis no. 1300
100	0		_aPrateep Duangduen
245	1	0	_aRole of water on mechanical properties of mud-stone
260			_aBangkok : _bAsian Institute of Technology, _c1978
300			_a179 p.
490	1		_aThesis ; _vno. 1300
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, 1978
520			_aThe mudstones above and below the lignite bed from the Mae Mo Lignite Mining in Lampang province, Thailand were collected to study the role of water content on their mechanical properties in the undisturbed and remolded states. The physical properties of petrography, x-ray diffraction and scanning electron properties, water content, density and specific gravity were also determined. For the mechanical properties; the swelling, slake - durability, creep, unconfined compression, tension and direct shear were determined at dry, natural or optimum and saturated state of water content. The mudstone is composed of kaolinite, illite, feldspar and quartz. The arrangement of the flaky crystals is almost parallel to the bedding plane and compacted layer. The natural and saturated water contents of the undisturbed mudstone above and below lignite are 20.0 %, 29.6 % and 29.3 %, 40.1 % respectively while those of the remolded mudstone are 29.5 %, 41.3 % and 30.5 %, 43.1 % respectively. The dry, natural and saturated densities of the undisturbed mudstone above and under lignite are 1.58, 1.90 2.05 and 1.27, 1.64, 1.78 gm/cm3 respectively while those of the remolded mudstone are 1.34, 1.74, 1.89 and 1.20, 1.57, 1.72 gm/cm3 respectively. The grain specific gravities of the mudstone above and under lignite are 2.42 and 2.21 respectively. The effect of drying causes more swelling. The arrangement of flaky crystals parallel to bedding plane or compacted layer causes pronounced swelling in a direction perpendicular to the bedding or compaction plane. Anisotropy considerably influences swelling, modulus of elasticity, Poisson's ratio and tensile strength. The changing in bond and structure of the undisturbed mudstone by remolding causes larger swelling; higher durability; decreasing unconfined compressive strength, modulus of elasticity, tensile strength, shear strength, internal friction angle; increasing Poisson's ratio. The amount of flaky lignite layer containing in mudstone causes larger swelling and reduces strength of mudstone. All strength properties of the mudstone decrease with increasing water content.
650		0	_aRock mechanics
700	1		_aOnodera, T. F., _eChairperson
700	1		_aCampbell, K.V., _eExamination Committee
700	1		_aBrenner, R.P., _eExamiination Committee
710	2		_aGovernment of the United Kingdom, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. 1300
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B22905
907			_a.b10577208 _bmnait _cx
902			_a251020
998			_b1 _c951012 _dm _ea _fx _g0
945			_lmnait
945			_lmnarc
942			_c20
942			_c40
909			_aBarcode : 30050003025367 _bCREATED : 1995-08-01 _cRECORD # : i11779147 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050160082995 _bCREATED : 2016-11-05 _cRECORD # : i12976386 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
999			_c103012 _d103012