Mechanical Characterization of Enamel Coated Steel Bars
| 项目名称： | Mechanical Characterization of Enamel Coated Steel Bars |
| 摘要： | Steel bars can be coated with enamels or glass to reduce or eliminate the tendency of steel corrosion in various applications, such as reinforced concrete (RC) decks, beams and columns. The chemical bond between enamel and steel materials is a key to make an enamel-coated steel corrosion free. Therefore, it is essential to characterize the mechanical and bonding properties of enamel-coated steels. To show competitiveness, the performance and cost of enamel-coated steel bars must be compared with those of the current technology such as epoxy reinforcing steel bars. In various applications of an enamel-coated steel bar, potential limit states include cracking and spalling of enamel coatings, surface impact damage of coatings, corrosion of steel components, and debonding of enamel from its coated steel bar. The proposed study is aimed at quantifying the ruggedness of enamel coatings and their bonding with steel and concrete. In a short term, the objectives of this particular study are to demonstrate that enamel-coated steel bars are comparable to conventional steel bars in mechanical properties and demonstrate that they are superior to epoxy bars in field handling and less susceptible to impact damage. The specific scope of work includes: * Cracking and spalling tests of enamel coatings with tensile specimens in order to understand the levels of the tensile deformation in steel bars that correspond to cracking of the enamel materials and their spalling off the steel bars, respectively. * Impact resistance tests of enamel coatings with the projectile impact on enamel coated steel bars and on epoxy coated bars. * Toughness tests of enamel-coated steel bars to document the minimum ratio of bent bars or the minimum number of bending cycles applied on bent bars before cracking. * Thermal tests for the compatibility between enamel and steel with tensile specimens. |
| 状态： | Completed |
| 资金： | 5000.00 |
| 资助组织： | Department of Transportation |
| 执行机构： | Center for Infrastructure Engineering Studies |
| 开始时间： | 20070701 |
| 实际结束时间： | 20111231 |
| 主题领域： | Highways；Research；I30: Materials |
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