| Author | Thieu Thi Binh |
| Call Number | AIT Caps. Proj. no.CIE-14-09 |
| Subject(s) | Reinforced concrete--Corrosion
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| Note | A capstone project submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Civil and Infrastructure Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Caps. Proj. ; no. CIE-14-09 |
| Abstract | Stirrup corrosion is one of the most serious concerns in Civil Engineering which leads the structure to fail by shear mode. This investigation is performed to find out the shear strength deterioration due to corrosion in stirrup only. Flexural reinforcement bars were covered by Sika-epoxy coating which helps preventing the bars to get corroded by external agents, therefore only transverse bars got corroded. There beams were casted among which beam A was the control beam without corrosion in stirrup, beam B and beam C were corroded beams with nearly same level of corrosion (11% and 9% overall). A DC power supply was used to transform electricity current of 1A and 3V to the two beams B and C during the accelerated corrosion process (14 days). Beam A was designed to fail in flexural mode while beam B and C were expected to fail in shear mode due to the loss of transverse cross-sectional area. However, the level of corrosion did not reach 36% as expected to fail in shear, and these two beams failed in flexural mode as well. Therefore, the capacities of these three beams were not much different and it was not possible to compare the shear strength reduction of beam B and beam C in which the locations of stirrup’s nodes were different. In addition, the study has found that the strength of concrete is reduced by adding salt as an admixture while mixing concrete also. Based on the load – displacement curves, the stress – strain diagrams were sketched so that the flexural stiffness of the corrosion beams could be calculated. The flexural stiffness did not turn out to be much different due to low level of stirrup’s corrosion. |
| Year | 2014 |
| Corresponding Series Added Entry | Asian Institute of Technology. Caps. Proj. ; no. CIE-14-09 |
| Type | Capstone Project |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Civil and Infrastructure Engineering (CIE) |
| Chairperson(s) | Punchet Thammarak; |
| Examination Committee(s) | Teraphan Ornthammarath; |
| Degree | Capstone Project (B.Sc.)-Asian Institute of Technology, 2014 |