The flexural strength of concrete beams reinforced with high strength steel bars | |
| Author | Pisidhi Karasudhi |
| Call Number | AIT Thesis no. 50 |
| Subject(s) | Concrete beams|xFatigue Strains and stresses |
| 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 | The results of static-short-term load tests of nine under-reinforced rectangular concrete beams in flexure are reported herein and compared with the predictions of a working stress analysis. All the beams were provided with high strength tensile reinforcement only. Adequate provisions against shear and bond failure were made in all beams. Steel percentages and properties were chosen as the principal variables to be studied. The working stress analysis was developed to predict the following properties of reinforced concrete beams: 1. Flexural strength. 2. Load-deflection curves. 3. Moment-curvature curves . 4. The cracking load of a reinforced concrete beam. 5. Load-steel stress curves. 6. Load-concrete strain curves. 7 . The correlation between the steel stresses and the width of crack on the tension face of the beam. 8. The maximum permissible percentage of steel. The relative percentage of reinforcement used in this work ranged from 0.068 to 0.281. In this range, the working stress method could predict the flexural strength slightly more closely than the ultimate strength method. The working stress method gave also good predictions of deflection, concrete strain, curvature and steel strain. Clark's formula gave a good prediction of the average width of crack. The experimental width of crack was generally greater than that evaluated by the CEB formula. |
| Year | 1963 |
| Type | Thesis |
| School | Student Research Before 1979 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Degree | Thesis (M.Eng.) - SEATO Graduate School of Engineering |