| Author | Charoon Kamolratana |
| Call Number | AIT Thesis no. 126 |
| Subject(s) | Reinforced concrete
|
| Note | A thesis submitted in partial fulfillment if the requirements for the degree of Master of Engineering in the SEATO Graduate School of Engineering, Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | Twenty-eight reinforced concrete one-way slabs, with various depth to width ratios were cast and tested to destruction under combined bending and torsion. The slabs had a constant longitudinal reinforcement ratio of one percent, a constant thickness of 3 inches and widths varying from 6 to 12 inches. The midspan deflection, angle of twist and mode of failure were noted during the test. Interaction curves for slabs under combined bending and torsion were obtained. It was observed that for small bending moments the torsional capacity of slabs was increased whereas when the bending moment was large enough to cause flexural cracking, the torsional capacity was reduced. The slabs tested in pure bending showed typical primary tension failures and those in pure torsion, typical sudden torsional shear failures following the formation of a diagonal tension crack at the bottom face. The inclination of this crack to the axis of the*slab was approximately 45°. The S-shaped compression cracks occurred on the top face of slab after the ultimate torsional capacity had been reached. The slabs, under combined bending and torsion, failed by developing diagonal tension cracks at the bottom face, the inclination of the crack depending upon the bending to twisting moment ratio. In all cases where twisting moment was applied the S-shaped compression crack formed on the top face of the slabs. |
| Year | 1966 |
| Type | Thesis |
| School | School of Environment, Resources, and Development + School of Management |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Dr. Neil Jackson; |
| Examination Committee(s) | Dr. W. J. Venuti;Dr. L. B. Kriz;Dean Milton E. Bender, Jr. |
| Degree | Thesis (M.Eng.) - SEATO Graduate School of Engineering |