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

0512011Sami Rizkalla项目描述：该项目支持北卡罗来纳州立大学土木工程系Sami Rizkalla博士和埃及开罗艾因沙姆斯大学Tarek Hassan博士的合作研究。他们将对地中海环境中用于混凝土结构的新型高耐腐蚀钢筋进行评估。知识价值：提出的研究的主要目标是研究在温暖气候下公路混凝土桥梁应用和结构中有效使用创新、高耐腐蚀、高强度钢筋。这种钢由美国MMFX钢铁公司生产，商业上称为“微复合多结构可成形钢”或“MMFX钢”。MMFX钢筋将由制造商捐赠。拟议的测试项目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纹截面分析的数值模拟，以确定几个已知会影响钢筋混凝土结构设计要求的参数的影响。考虑了各种限制条件对MMFX加筋混凝土构件抗弯强度和延性的影响。根据研究结果，将提供使用MMFX作为混凝土结构主要抗弯钢筋的设计建议。研究团队的背景和经验与本研究的要求非常吻合。他们在设计、开发、代码编写、公路结构测试和战略规划方面表现出专业知识。有了这些专业知识和两家机构之间的合作，这个项目的预期结果将是提供MMFX钢筋弯曲设计规定的全面和权威文件。这些研究人员在他们的领域受到高度尊重。更广泛的影响：本研究的结果将有益于土木工程界。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-埃及联合基金项目的支持，该项目向两国的科学家和工程师提供赠款，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.