000			03250cas a2200409 a 4500
005			20260817163012.0
008			090421s1979 th uu|m rtt 0| a1eng d
035			_a.b10089743
099		9	_aAIT Thesis no.1018
100	0		_aKittipong Suppatkul
245	1	0	_aApplications of CBR and plate bearings tests in the Bangkok area with respect to pavement design
260			_aBangkok : _bAsian Institute of Technology, _c1979
300			_a250 p.
490	1		_aThesis ; _vno. 1018
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, 1979
520			_aCalifornia Bearing Ratio (CBR) and plate bearing tests (12" and 30" m. plate) were conducted in a shallow field test pit on Bangkok Clay and in a 2 deep concrete test pit in which a pavement structure consisting of compacted clay, lateritic soil and crushed rock aggregate had been built. Extensive CBR testing was also performed in the laboratory on unoaked and soaked samples of clay, lateritic soil and crushed rock aggregate compacted at various efforts. CBR-values obtained in the concrete test pit were somewhat lower than laboratory values for all three materials in the unoaked condition, where as those measured in the field test pit were slightly higher. Design CBR values were selected as 2%, 25% and 70% for the clay, lateritic soil and crushed rock, respectively. The coefficient of subgrade reaction, k, from 12" plate tests was about twice the value of the 3011 plate and the ratio of k-values between clay, lateritic soil and crushed rock was about 6:3 :1. In--situ soaking of clay greatly reduced the k-value. Results from repetitive plate bearing tests indicated a considerable decrease of allowable pressure with increasing number of load repetitions. Finally, the results were used for estimating the layer thickness in a rigid and flexible pavement using three different design procedures,
650		0	_aPavements _xDesign and construction
700	1		_aBrenner, R.P., _eChairperson
700	1		_aBalasubramaniam, A.S., _eExamination Committee
700	1		_aHolmberg, Soren, _eExamination Committee
710	2		_aThe Royal Netherlands Government, _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. 1018
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B22355
907			_a.b10089743 _bmnait _cx
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909			_aBarcode : 30050120862320 _bCREATED : 1994-05-16 _cRECORD # : i10096103 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
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