SMA智能混凝土材料裂缝修复机理及试验研究

混凝土结构的裂缝产生与扩张一直是土木工程领域亟待解决的难点问题之一。本文将形状记忆合金（SMA）材料植入混凝土材料中，构成一种基于SMA驱动的智能混凝土材料。由于形状记忆合金具有伪弹性，在混凝土产生裂缝的同时SMA将会产生回复力，阻碍裂缝的产生和扩展，根据SMA的形状记忆效应，在材料产生裂缝后对材料进行加热，其回复力将会起到修复裂缝的作用。文章分别对SMA智能混凝土材料的裂缝修复机理和裂缝修复试验进行研究，讨论了不同尺寸试件的裂缝修复过程和裂缝修复程度。本文研究可为形状记忆合金智能混凝土材料的进一步优化设计和工程应用提供理论指导。

Mechanism and Experimental Study on Crack Repair of Shape Memory Alloy Intelligent Concrete

As for the concrete structures, the inevitable crack generation and expansion has always been a difficult problem should be solved. In this paper, the shape memory alloy intelligent concrete design scheme is proposed, which implants shape memory alloys into the concrete to form a shape memory alloy intelligent concrete material. Shape memory alloy intelligent concrete materials will have the advantages of crack repair due to the characteristics of pseudo-elasticity and shape memory effect. In this paper, the crack repair mechanism and the crack repair test of shape memory alloy intelligent concrete materials are carried out, respectively. This paper will provide theoretical guidance for the further optimization design and application of the shape memory alloy intelligent concrete.