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008			250398 th eng
035			_a.b10541895
099		9	_aAIT Thesis no. 1273
100	1		_aPrawono, S.
245	1	0	_aRadial consolidation of soft Pom Prachul clay by central drain oedometer
260			_aBangkok : _bAsian Institute of Technology, _c1978
300			_a145 p.
490	1		_aThesis ; _vno. 1273
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			_aIn order to evaluate the coefficient of consolidation for horizontal drainage, ch, in Porn Prachul clay, a variety of laboratory tests were conducted. These included lever-arm and Bishop oedometer tests on 2.5 inch diameter samples with a central drain as well as tests on 6 inch diameter samples in a Rowe cell. All samples were taken from a depth between 5.0 and 5.5 m. For the Rowe oedometer tests four different drain diameters were used and pore pressures were measured at the base either at two diametrically located points or at four points with different distances from the drain. The coefficient of consolidation for radial drainage was evaluated from compression-time curves in case of the lever-arm and Bishop oedometer tests and from pore pressure dissipation in case of the Rowe oedometer tests. The degree of consolidation as a function of the radial distance from the drain was compared with Barron's equal strain solution. A fair agreement, however, was only observed for intermediate degrees of consolidation. The coefficient of consolidation was also evaluated from constant head permeability tests. The values of Ch obtained by the difference tests varied from about 5 to 20.10-8 cm2/sec, with the Rowe cell tests yielding the lowest values. An analysis of settlement plate observations under a test embankment revealed that the field value of Ch could be about 5 times higher than the value obtained from the Rowe oedometer.
650		0	_aClay _xThailand _xPom Prachul _xTesting
700	1		_aBrenner, R.P., _eChairperson
700	1		_aBalasubramaniam, A.S., _eExamination Committee
700	1		_aOnodera, T., _eExamination Committee
710	2		_aGovernment of the United States of America, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. 1273
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B22886
907			_a.b10541895 _bmnait _cx
902			_a260324
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909			_aBarcode : 30050003024857 _bCREATED : 1994-05-18 _cRECORD # : i10680093 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050002896586 _bCREATED : 1994-05-18 _cRECORD # : i1068010x _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050160086954 _bCREATED : 2016-11-05 _cRECORD # : i12976088 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
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