Self-repair concrete structure with self sensing capability and manufacturing method thereof

Abstract

The invention discloses a self-repair concrete structure with self sensing capability. The self-repair concrete structure comprises a concrete member, wherein a plurality of carbon fiber and sodium silicate repair particles are uniformly distributed in the concrete member; the sodium silicate repair particles are prepared from epoxy resin and a plurality of anhydrous sodium silicate particles uniformly wrapped in the epoxy resin; a strain gauge used for monitoring the concrete electrical resistivity change in real time is also attached onto the concrete member. The invention also provides a manufacturing method of the concrete structure with self sensing capability. The concrete structure has self diagnosis and damage self-repair capability, so that the safety, the durability and the economical performance of the concrete structure are improved.

Description

technical field [0001] The invention relates to a self-repairing concrete structure capable of self-sensing working conditions and a manufacturing method thereof, including concrete components, and belongs to the field of intelligent concrete and similar building materials. Background technique [0002] During the normal service process of concrete, due to factors such as environment and fatigue damage, cracks will inevitably occur. These cracks provide a channel for harmful substances from the outside to enter the interior of the concrete, thereby accelerating the corrosion of internal steel bars and reducing the safety of concrete structures. and durability. For the fully developed macroscopic cracks, we can easily identify them with the naked eye, and use traditional methods, such as structural reinforcement, grouting, and filling methods, to repair them later; , it is difficult to be detected timely and accurately. At this time, the traditional crack repair methods cann...

AI Technical Summary

Problems solved by technology

For the fully developed macroscopic cracks, we can easily identify them with the naked eye, and use traditional methods, such as structural reinforcement, grouting, and filling methods, to repair them later; , it is difficult to be detected timely and accurately. At this time, the traditional crack repair methods cannot achieve the repair effect, and the microscopic cracks that cannot be repaired in time will not only affect the normal performance of the structure and shorten the service life, but may also develop further. For macro cracks and lead to brittle fracture of the structure, resulting in serious catastrophic accidents

More importantly, the cost of traditional crack repair methods is very high, consuming a lot of manpower and material resources

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