Self-Healing Concrete for Mitigation of Chloride Induced Steel Corrosion

本项目旨在开发一种内在自愈混凝土，使用结晶外加剂快速愈合混凝土裂缝。在海洋环境中，混凝土开裂为海水中的氯化物直接进入钢筋提供了通道，导致钢筋早期严重腐蚀。自愈混凝土将被设计用于解决澳大利亚混凝土结构恶化的两个主要原因：由于限制收缩引起的早期开裂和氯化物引起的钢筋腐蚀。该项目的成果将推动基于晶体外加剂的自愈混凝土的开发和应用，以延长混凝土结构的使用寿命，避免昂贵的维修费用。

This project aims to develop an intrinsic self-healing concrete using crystalline admixtures for rapid healing of concrete cracking. In marine environments, concrete cracking provides a direct access for chlorides from sea water to the steel reinforcement, leading to early and severe steel corrosion. The self-healing concrete will be designed to address the two main causes of concrete structures deterioration in Australia: early age cracking due to restrained shrinkage and chloride induced steel reinforcement corrosion. The outcomes of this project will drive the advances in developing and applying crystalline admixture-based self-healing concrete to extend the service life of concrete structures and avoid costly repair.