Strengthening Concrete Structures with Smart Materials

用智能材料加固混凝土结构

• 批准号: RGPIN-2015-05987
• 负责人: ElHacha, Raafat
• 金额: $ 1.6万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=590764
• 关键词: Strengthening; Concrete; Structures; Smart; Materials

Deterioration of Reinforced Concrete (RC) structures is a never-ending problem that incites civil engineers around the world to seek innovative durable strengthening techniques and high performance advanced materials. Recently, a new class of smart materials called Shape Memory Alloys (SMA) has been attracting the attention of researchers from different fields due to their superior properties. The SMA is a unique class of alloy with the ability to undergo large deformations and return to its original shape through stress removal. Besides their super-elasticity, corrosion and fatigue resistivity, SMAs are mainly characterized by the Shape Memory Effect (SME) phenomenon that is inherited through their unique thermo-mechanical properties. The SME represents the ability of the SMAs to recover their original shape after being deformed beyond the elastic limits upon heating. SMAs with the SME property can be used as external prestressed reinforcement by providing active strengthening to RC members.

钢筋混凝土（RC）结构的恶化是一个永无止境的问题，它促使世界各地的土木工程师寻求创新耐用的加强技术和高性能的高级材料。最近，由于其出色的特性，一种称为Shape Memory Alloys（SMA）的新型智能材料（SMA）吸引了来自不同领域的研究人员的注意。 SMA是一类独特的合金，具有大变形的能力，并通过减轻压力恢复其原始形状。除了它们的超弹性，腐蚀和疲劳电阻率外，SMA的主要特征是形状记忆效应（SME）现象，这些现象是通过其独特的热机械特性遗传而来的。中小企业代表了SMA在加热后变形超出弹性极限后恢复其原始形状的能力。 SMA具有SME属性的SMA可以通过为RC成员提供主动加强来用作外部预应力增强。