1 AIT Asian Institute of Technology

Pullout resistance of steel grids with weathered clay as backfill material

AuthorCisneros, Chilvier Buscato
Call NumberAIT Thesis no.GT-88-07
Subject(s)Clay--Thailand--Pathum Thani--Testing

NoteA thesis submitted in partial fulfillment of the requirement for the degree of Master or Engineering, School of Engineering and Technology
PublisherAsian Institute of Technology
Series StatementThesis ; no. GT-88-07
AbstractThis study attempts to evaluate the possibility of application of weathered clay in a welded bar reinforced soil structure. Twenty-nine welded wire mats were pulled in a full scale testing apparatus. A total of eighty-seven tests were run using welded 3/8 " and 1/4" diameter steel mesh of varying aperture sizes , namely: 6" X 9 " , 6 " X 12", and 6 " X 18 " with weathered c l ay as backfill mate ria l -obtained from AIT campus . The soil specimen was compacted at 95 % Standard Proctor and tested at wet and dry sides of the optimum water content . These tests were done with overburden pressures ranging from 1 to 13 t/m2 • From the investigation, it was found that the contribution of skin adhesion/friction is quite minimal and the bulk of the pullout resistance is carried by the transverse wires in bearing. It was also found that the 6 " X 12,. me-sh exhibited the highest pullout resistance among the mesh sizes used in the dry side compacted backfill while 6" x 9 " mesh was for wet side compacted backfill. The results dictate that water greatly affect the resistance of reinforced soil mass. The strains induced in the longitudinal bars were quite s mall compared to the extensible wire (i.e. Tensar grids) about O. 01 % to 0. 2 % only . The distribution of the resistance mobilized at each grid junction was found to be linear.
Year1989
Corresponding Series Added EntryAsian Institute of Technology. Thesis ; no. GT-88-07
TypeThesis
SchoolSchool of Engineering and Technology (SET)
DepartmentOther Field of Studies (No Department)
Academic Program/FoSGeotechnical and Transportation Engineering (GT)
Chairperson(s)Bergado, Dennes T.
Examination Committee(s)Balasubramaniam, A.S. ;Noppadol Phien-wej
Scholarship Donor(s)Government of Italy ;
DegreeThesis (M.Eng.) - Asian Institute of Technology, 1989


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