Effect of cover depth, W/C ratio, and moisture condition on half-cell potential studied through design of experiment | |
| Author | Rathnayake, Chamishara Hasarinda |
| Call Number | AIT Thesis no.ST-16-05 |
| Subject(s) | Cement Reinforced concrete Corrosion Concrete Mixing |
| 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-16-05 |
| Abstract | One of the major deterioration type among the reinforced concrete structure is corrosion of the embedded steel. Corrosion can affect the service life of the concrete structure. Therefore, engineers and researchers tend to investigate the condition of the reinforced concrete structures near severe environmental conditions. Engineers and researchers used many non-destructive electrochemical methods and equipment’s to investigate the condition of the reinforced concrete structures. The most conventional corrosion assessment method has been half-cell potential method. The use of half-cell potential method and the interpretation of its results clearly guided in ASTM C 876 standard. Even though, with standard half-cell potential measurements can affect from various parameters and environmental conditions. This study presents an experimental investigation on effect of cover depth, water-cement ratio, and moisture condition on half-cell potential measurements. Concrete slab specimens were used for the experimental study and chloride induced crack introduce to the slab specimens by galvanic method. Each factor has three different levels and to check the effect of each factor, half-cell potential results analyze through design of experiment method (DOE) using Minitab software. From the Minitab analysis shows that the higher degree of effect on the half-cell potential measurement is from the moisture condition and cover depth respectively, whereas water-cement ratio found to having minimal effect. Finally, average mass loss and corrosion rate calculated form each slab specimens and compared with the half-cell potential measurement |
| Year | 2016 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-16-05 |
| 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; |
| Examination Committee(s) | Thanakorn Pheeraphan ;Raktipong Sahamitmongkol; |
| Scholarship Donor(s) | AIT Fellowship; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2016 |