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

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和可再生的方法。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结的耐久性。这项研究的目的是通过短期加速老化试验方法，开发合适的方法来预测复合-混凝土粘结的长期耐久性。一个由土木、机械和化学工程学院和学生组成的多学科团队将使用自然老化技术和加速老化试验来研究复合材料与混凝土粘结的耐久性特征。将开发和使用各种无损评估技术来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被启动，以建立对键劣化的基本理解，以预测键劣化。这项研究的意义在于，将开发的加速测试方法和耐久性预测程序是基于对键劣化机理的基本理解。研究成果将很容易在土木工程设计实践中得到应用。这将使土木工程团体能够更充分地利用玻璃钢材料进行基础设施修复的潜力。

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.