U.S.-Egypt Cooperative Research: Evaluation of a New High Corrosion-Resistant Steel Reinforcement for Concrete Structures in Salt Environments

0512011 Sami Rizkalla项目描述：该项目支持北卡罗来纳州立大学Raleigh土木工程系Sami Rizkalla博士和埃及开罗Ain Shams大学Tarek Hassan博士的合作研究。他们将在地中海环境中对一种用于混凝土结构的新型高耐蚀钢筋进行评估。智力优势：拟议研究的主要目标是调查创新的、高度耐腐蚀的高强度钢筋在温暖气候下的公路混凝土桥梁应用和结构中的有效使用。这种钢由美国MMFX钢铁公司生产，在商业上被称为“微复合多结构可成形钢”或“MMFX钢”。MMFX螺纹钢将由其制造商捐赠。拟议的测试计划将在埃及开罗艾因沙姆斯大学的结构实验室进行。分析部分将包括使用裂缝截面分析的数值模拟，以确定几个参数的影响，这些参数已知会影响钢筋混凝土结构的设计要求。将考虑各种限制对MMFX加固混凝土构件抗弯强度和延性的影响。根据研究结果，提出了MMFX作为混凝土结构主要抗弯加固材料的设计建议。研究团队的背景和经验非常符合本研究的要求。他们在设计、开发、代码编写、公路结构测试和战略规划等领域展示了专业知识。在这方面的专业知识和两个机构的合作下，该项目的预期结果将是全面和权威的，将提供MMFX钢筋弯曲设计规定的文件。研究人员在他们所在的领域备受尊敬。更广泛的影响：这项研究的结果将对土木工程界有利。美国和埃及研究人员之间的合作可能会带来协同效益。该项目得到了美国-埃及联合基金计划的支持，该计划为两国的科学家和工程师提供资助，以开展这些合作活动。

0512011Sami RizkallaProject Description: This project supports a collaborative research between Dr. Sami Rizkalla, Department of Civil Engineering, North Carolina State University, Raleigh and Dr. Tarek Hassan, Ain Shams University, Cairo, Egypt. They will conduct an evaluation of a new high corrosion-resistant steel reinforcement for concrete structures in the Mediterranean environment.Intellectual merit: The prime objective of the proposed research is to investigate the effective use of innovative, highly corrosion-resistant, high strength steel reinforcement for use in highway concrete bridge applications and structures in warm climate. The steel is produced by MMFX Steel Corporation of America and commercially known as "Micro-composite Multistructural Formable Steel" or "MMFX Steel". The MMFX rebars will be donated by their manufacturer. The proposed testing program will be conducted at the Structural Laboratory at Ain Shams University, Cairo, Egypt. The analytical component will include numerical simulation using cracked section analysis to determine the influence of several parameters, which are known to affect the design requirements for reinforced concrete structures. The effect of the various limitations on the flexural strength and ductility of concrete members reinforced with MMFX will be considered. Based on the research findings, design recommendations for the use of MMFX as main flexural reinforcement for concrete structures will be provided. The background and experiences of the research teams fit well with the requirements of this research. They have demonstrated expertise in the areas of design, development, code writing, testing of highway structures and strategic planning. With this expertise and with the cooperation between both institutions, the anticipated results of this project will be comprehensive and authoritative documents for flexural design provisions for MMFX rebars will be provided. The researchers are highly respected in their field. Broader impacts: The results of this research will be beneficial to the civil engineering community. The collaboration between U.S. and Egyptian researchers is likely to provide synergistic benefits. This project is being supported under the US-Egypt Joint Fund Program, which provides grants to scientists and engineers in both countries to carry out these cooperative activities.