Self-Healing Concrete for Mitigation of Chloride Induced Steel Corrosion

用于减轻氯化物引起的钢腐蚀的自修复混凝土

• 批准号: DP220101051
• 负责人: Prof Arnaud Castel
• 金额: $ 15.8万
• 依托单位: University of Technology Sydney
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2022
• 资助国家: 澳大利亚
• 起止时间: 2022-01-01 至 2024-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP220101051
• 关键词: Self; Healing; Concrete; Mitigation; Chloride

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.

该项目旨在开发一种使用结晶外加剂的内在自修复混凝土，用于快速修复混凝土裂缝。在海洋环境中，混凝土开裂为海水中的氯化物提供了直接进入钢筋的通道，导致钢材早期严重腐蚀。自修复混凝土的设计旨在解决澳大利亚混凝土结构恶化的两个主要原因：由于收缩收缩引起的早期裂缝和氯化物引起的钢筋腐蚀。该项目的成果将推动结晶外加剂自修复混凝土的开发和应用进步，以延长混凝土结构的使用寿命并避免昂贵的维修。