Durability of the Bond Between Concrete and Fiber-Reinforced Polymer Composites

混凝土与纤维增强聚合物复合材料之间粘结的耐久性

• 批准号: 9908293
• 负责人: Michael Petrou
• 金额: $ 21万
• 依托单位: University of South Carolina at Columbia
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-15 至 2004-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9908293&HistoricalAwards=false
• 关键词: Durability; Bond; Between; Concrete; Fiber

9908293PetrouFiber reinforced polymer (FRP) composites offer a practical and revoluntionary method of rehabilitating the Nation's infrastructure. A significant obstacle to their widespread acceptance, however is our inability to predict the durability of the composite-to-concrete bond. The objective of this research is to develop appropriate methodology for predicting the long-term durability of the compostie-to-concrete bond from short-term accelerated aging test methods. A multi-disciplinary team of Civil, Mechanical and Chemical Engineering faculty and students will employ both natural weathering techniques and accelerated aging tests to investigate durability characteristics of the composite-to-concrete bond. Various non-destructive evaluation techniques will be developed and employed to characterize durability of bond parameters. Detailed phenomenological modeling based on generated test results will be initiated to develop a fundamental understanding of bond deterioration, to predict bond degradation.The significance of this research is that the accelerated test methods and durability prediction procedures that will be developed are based on a fundamental understanding of the mechanisms of bond deterioration. The research results will be readily implemented in civil engineering design practice. This will permit the civil engingeering community to more fully utilize the potential of FRP materials for infrastruture rehabilitation.

9908293石油纤维增强聚合物（FRP）复合材料为修复国家基础设施提供了一种实用而革命性的方法。然而，它们被广泛接受的一个重大障碍是我们无法预测复合材料与混凝土粘合的耐久性。本研究的目的是开发适当的方法来预测短期加速老化试验方法的复合材料与混凝土结合的长期耐久性。一个由土木、机械和化学工程专业的教师和学生组成的多学科团队将采用自然风化技术和加速老化试验来研究复合材料与混凝土粘合的耐久性特性。各种无损评估技术将被开发并用于表征粘结参数的耐久性。基于生成的测试结果的详细现象学建模将开始发展对键退化的基本理解，以预测键退化。本研究的意义在于，将开发的加速试验方法和耐久性预测程序是基于对粘结劣化机制的基本理解。研究成果对土木工程设计实践具有一定的指导意义。这将使土木工程界能够更充分地利用玻璃钢材料修复基础设施的潜力。