Deterioration of Reinforced Concrete: A Fracture Mechanics Approach

本研究的目的是建立一个严格的数值模型（主要基于非线性断裂力学）来研究钢筋腐蚀、大气污染、霜冻和机械载荷导致的钢筋混凝土结构（如桥面）的劣化。这些不同的影响与开裂之间的耦合将被考虑。这反过来，将导致更好地了解恶化过程，并提高预测能力。而不是把重点放在恶化的原因（如氯化物扩散，碳化），我们将重点放在最终的影响，即混凝土开裂及其相互作用/耦合机制，导致恶化。

The aim of this research is to develop a rigorous numerical model (primarily based on nonlinear fracture mechanics) to study thedeterioration of reinforced concrete structures (such as bridge decks)due to the corrosion of rebars, atmospheric pollution, frost and mechanical load.Coupling between these various effects with cracking will be considered.This in turn, will lead to the better understanding of the deterioration process,and improved predictive capabilities.Rather than focusing on the causes of the deteriorations (such as chloridediffusion, carbonation), we will focus on the end effect which is concrete cracking and its interaction/coupling with the mechanisms which lead to deterioration.