U.S.-Mexico Cooperative Research: Chloride Diffusion and Corrosion Effects on Reinforcing Steel in Concrete

美国-墨西哥合作研究：氯化物扩散和对混凝土中钢筋的腐蚀影响

• 批准号: 9504108
• 负责人: Alberto Sagues
• 金额: $ 0.64万
• 依托单位: University of South Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-09-01 至 1999-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9504108&HistoricalAwards=false
• 关键词: U.S.; Mexico; Cooperative; Research; Chloride

9504108 Sagues This U.S.-Mexico award will support a research collaboration between Prof. Alberto Sagues of the University of South Florida (USF), and Prof. Pedro Castro Borges of the Centro de Investigacion y de Estudios Avanzados (CINVESTAV) in Merida, Yucatan, Mexico, to work on corrosion problems of reinforcing steel in concrete. More specifically, the researchers intend to determine the causes and mechanism of carbonation of reinforced concrete structures, study the combined effects of carbonation and chloride ion contamination on corrosion of reinforcing steel, and investigate the mechanism of diffusion of chloride ions through concrete. The methodology will include a literature review update, concrete core sampling of structures on both sides of the Gulf of Mexico, examination of those cores to quantitatively determine rates of chloride ingress, and examination of field test specimens already in place. The work will benefit from existing related research programs on carbonation of concrete and lifetime prediction of concrete structures at USF, and investigations on corrosion of steel in concrete at CINVESTAV. This award is partly supported by the Division of Civil and Mechanical Structures of NSF. ***

小行星9504108 这个美国-墨西哥奖将支持南佛罗里达大学（USF）的Alberto Sagues教授和墨西哥尤卡坦州梅里达的Centro de Investigacion y de Estudios Avanzados（CINVESTAV）的Pedro Castro Borges教授之间的研究合作，研究混凝土中钢筋的腐蚀问题。 更具体地说，研究人员打算确定钢筋混凝土结构碳化的原因和机制，研究碳化和氯离子污染对钢筋腐蚀的综合影响，并研究氯离子在混凝土中的扩散机制。 该方法将包括文献综述更新、墨西哥湾两岸结构的混凝土芯取样、对这些芯进行检查以定量确定氯化物侵入率，以及对已经到位的现场测试样本进行检查。 这项工作将受益于现有的相关研究计划，混凝土碳化和混凝土结构的寿命预测在USF，和调查在CINVESTAV混凝土中的钢筋腐蚀。 该奖项部分由NSF土木和机械结构部门支持。 ***