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035			_a.b11764843
099		9	_aAIT Thesis no. GE-98-12
100	0		_aPracha Ounjaichon
245	1	0	_aPullout and direct shear resistance of hexagonal wire mesh reinforcement with weathered Bangkok clay
260			_aBangkok : _bAsian Institute of Technology, _c1999
300			_a112 leaves
490	1		_aThesis ; _vno. GE-98-12
500			_aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering
502			_aThesis (M.Eng.) - Asian Institute of Technology, 1999
520			_aPullout and large scale direct shear tests were conducted on hexagonal wire mesh embedded in the weathered Bangkok clay. Two types of hexagonal wire mesh were tested, one is Zinc-coated wire mesh with a diameter of 3.0 mm, and the other is PVCcoated wire mesh with an inner core diameter of 2. 7 mm. Both types of cell size have dimension of 100 mm x 80 mm. The tests were conducted at four different normal pressures, 30 kPa, 50 kPa, 70 kPa, and 90 kPa and pulled or sheared at a rate of 1 mm/min. For pullout tests, the effective length of both types of wire meshes used were equal to 0.70 m, 0.90 m and 1.10 m, respectively. These were done to investigate the interaction between reinforcement and soil, and determine pullout and shear resistances of each type of reinforcement in weathered Bangkok clay. In-air tensile tests were also conducted to investigate the relation between tensile strength and in-air length. The average ultimate tensile strength of Zinc-coated and PVC-coated hexagonal wire mesh obtained by wide-width (in-air) test. Tensile test may be valued at 55.5 kN/m and 44.8 kN/m, respectively. Both types of hexagonal wire mesh exhibit nonuniform distribution of displacements when pulled in soil. Maximum displacement occurred at the pullout face and progressively decreasing towards the other end. Consequently, strain and tension in the wire mesh are highest at the pullout face and decreasing towards the opposite end. The mobilization of tension in wire mesh is directly proportional to the applied normal stress. The pullout strength of Zinc-coated wire mesh is greater than PVC-coated wire mesh due to higher stiffness of Zinc-coated wire mesh and pullout strength of hexagonal wire mesh in weathered Bangkok clay in greater than silty sand. The direct sliding coefficient, fds, of both types of hexagonal wire mesh can be greater than 1. 00 with actual value of 1.07. Predicted value of pullout resistance by Chai (1992) yielded closer results to the measured data compared to Peterson and Anderson (1980) and Jewell et al. (1984).
650		0	_aSoil-structure interaction _zThailand _zBangkok
650		0	_aClay _zThailand _zBangkok _xTesting
700	1		_aBergado, Dennes T., _eChairperson
700	1		_aBalasubramaniam, A.S., _eExamination Committee
700	1		_aDer Guey, Lin, _eExamination committee
710	2		_aThe STARR Foundation, _eScholarship donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. GE-98-12
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B12447
907			_a.b11764843 _bmnait _cy
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