Monitoring and repairing characterization method for self-repairing concrete engineering crack

Abstract

The invention discloses a monitoring and repairing characterization method for a self-repairing concrete engineering crack which comprises the following steps: (1) in the process of pouring self-repairing concrete in an engineering site, embedding a sensor in the self-repairing concrete to obtain temperature and micro-stress data in the self-repairing concrete at different pouring time, and judging the generation position of the crack accordingly; and (2) after the crack is generated, testing the concrete crack at different repairing times by adopting an ultrasonic method, and representing the self-repairing condition of the crack by virtue of the change of the ultrasonic wave velocity. According to the invention, the crack monitoring and repairing characterization method for the engineering site is provided for the first time, by adopting the method, the generation position of the crack can be rapidly and accurately detected by observing and analyzing the temperature and strain data in the concrete, and meanwhile, the repairing condition of the concrete crack can be conveniently and accurately characterized by utilizing an ultrasonic method; in addition, the method depends on a simple test tool and is convenient to apply in an engineering field.

Description

technical field [0001] The invention relates to a monitoring and repairing characterization method for self-repairing concrete engineering cracks, belonging to the field of concrete crack monitoring. Background technique [0002] In the field of civil engineering and construction, concrete is the most widely used material. However, due to the shortcomings of concrete materials such as high brittleness, low tensile strength and large shrinkage deformation, different types of microscopic cracks will inevitably occur on the surface during its long-term service. Cracks seriously reduce the bearing capacity of the structure and affect the functionality and aesthetics of concrete materials. Therefore, timely and efficient repair of concrete cracks can not only improve the service life of concrete structures, but also save maintenance costs and reduce economic losses. [0003] Self-healing concrete is a new type of concrete with self-healing function. When cracks occur, it can acc...

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Problems solved by technology

[0005] Purpose of the invention: In view of the lack of methods for monitoring the generation of cracks and the repair process of cracks at the current engineering site, the present invention provides a method for monitoring and repairing characterization of cracks in self-repairing concrete engineering

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