Shrinkage, cracking, self-healing and corrosion in blended cement concrete

混合水泥混凝土的收缩、开裂、自愈和腐蚀

• 批准号: LP170100912
• 负责人: Prof Arnaud Castel
• 金额: $ 22.14万
• 依托单位: University of Technology Sydney
• 依托单位国家: 澳大利亚
• 项目类别: Linkage Projects
• 财政年份: 2019
• 资助国家: 澳大利亚
• 起止时间: 2019-01-13 至 2023-01-12
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LP170100912
• 关键词: Shrinkage; cracking; self; healing; corrosion

This project aims to investigate the effects of binder quantity and composition on early-age cracking in Australian concretes caused by restrained shrinkage, the subsequent self-healing capability of the cracks, and the possibility of detrimental early chloride induced steel reinforcement corrosion, particularly in marine locations. This project will focus on concrete mix designs and the blends of cement, fly-ash and blast furnace slag that are prescribed in the revised version of the concrete bridge standard for the most severe exposure. This project will lead to a significant improvement in the serviceability and durability of concrete structures in severe environments.

本项目旨在研究粘结剂的数量和组成对澳大利亚混凝土中由约束收缩引起的早期裂缝的影响，裂缝随后的自愈能力，以及有害的早期氯离子引起钢筋腐蚀的可能性，特别是在海洋地区。该项目将侧重于混凝土配合比设计和水泥、粉煤灰和高炉矿渣的混合物，这些都是修订版的混凝土桥梁标准中规定的最严重的暴露。该工程将显著提高混凝土结构在恶劣环境下的使用性能和耐久性。