| Author | Jayasuriya, Anuruddha |
| Call Number | AIT Thesis no.ST-16-03 |
| Subject(s) | Reinforced concrete--Corrosion
|
| Note | A thesis submitted in partial fulfillment of the requirements for the
degree of Master of Engineering in
Structural Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ST-16-03 |
| Abstract | Corrosion of steel has been recognized as one of the major deterioration types amongst the durability issues of reinforced concrete structures. Hence, it is a primary concern to be addressed for the existing structures near chloride environments, to check the time to crack the concrete. The empirical models are generally compared with derived mathematical formulations. This study presents numerous mathematical models available in the literature to evaluate the time to crack the concrete and one model was picked by screening of models to ensure whether the accuracy is established with respect to the experimental results. Experimental study under the accelerated chloride corrosion confirms that the mass loss is proportional to the corrosion current density and the negative half-cell potential readings. Moreover, a free commercial computer software known as Life-365 was used to check the accuracy based on the experimental study under the given laboratory conditions. The results claim that the Life 365 over estimates the time to crack the concrete for both columns and slabs. Nevertheless, Minitab analysis shows that the higher degree of effects on the time to crack is from the corrosion current density and the cover depth respectively, whereas bar diameter, water to cement ratio are found to be less effective. It has been confirmed that the corrosion stress increased by about 2 times when the cover thickness is increased from 25 mm to 50 mm for column specimens, and it was about 1.35 times for slab specimens. |
| Year | 2016 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-16-03 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Pennung Warnitchai ;Thanakorn Pheeraphan; |
| Examination Committee(s) | Raktipong SahamitmongkolPunchet Thammarak; |
| Scholarship Donor(s) | AIT Fellowship; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2016 |