Designing and Characterizing New Coating Materials to Increase the Corrosion Resistance of Steel Reinforcement Embedded in Concrete
| 项目名称： | Designing and Characterizing New Coating Materials to Increase the Corrosion Resistance of Steel Reinforcement Embedded in Concrete |
| 摘要： | A team comprised by Texas A&M University (TAMU) proposes a unique approach that will include the integration of materials sciences, infrastructure and corrosion science fundamentals and applications to characterize and select the corrosion mitigation methods for steel structure elements used in transportation applications. The proposal includes: (1) Characterize the performance of galvanized steel prepared varying the chemical compositions of the hot dipping bath; (2) Characterize the performance of a Zn Rich Epoxy coating formulated based on the optimal galvanized layer composition. (3) Characterize the corrosion control mechanisms (barrier coating vs cathodic protection) for corrosion of steel rebar embedded in concrete structures in aqueous solutions; (4) Characterize reinforced concrete (RC) elements with either corrosion control methods, and evaluate their performance to understand their influence on corrosion and its rates; and (5) Identify the most suitable and efficacy corrosion control strategy and quantify the uncertainties associated with methods for testing and monitoring corrosion of steel in RC elements. This proposal was formulated in response to the deterioration of infrastructure due to reinforcing steel and metallic assets suffering from corrosion, which has been recognized for several decades as a major technical and economic challenge in the United States. A recent cost-of-corrosion study by the Federal Highway Administration has estimated the annual cost of corrosion related to USA bridges to be approximately 30 billion, not including indirect costs incurred by the traveling public due to infrastructural closures. One particular aspect is the degradation of the elements of the cell naturally formed in different infrastructure assets made by steel materials under corrosive/environmental conditions. Due to the random distribution and interaction of the chemical species from the environment with the metallic structure, the generation of transport mechanisms and electrochemical reactions occur. The corrosion process at the metal/electrolyte interface can lead either to general dissolution or to a localized attack and decrease the durability/reliability of the structure under load and corrosive conditions. |
| 状态： | Active |
| 资金： | 130000 |
| 资助组织： | Office of the Assistant Secretary for Research and Technology |
| 管理组织： | Transportation Consortium of South-Central States (Tran-SET) |
| 项目负责人： | Dhasmana, Heena |
| 执行机构： | Texas A&M University, College Station |
| 主要研究人员： | Castaneda, Homero |
| 开始时间： | 20220401 |
| 主题领域： | Bridges and other structures；Construction；Highways；Maintenance and Preservation；Materials；Pavements |
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