A self-sensing self-healing concrete component

Abstract

The invention discloses a self-sensing self-healing concrete member. During concrete mixing, steel capsules are put into the concrete; after uniform stirring, a steel reinforcement cage which is installed in place in advance is poured into the concrete; and the steel capsules are uniformly distributed in the concrete and their orientations are random. By the use of the product, tensile strength, shearing resistance, bending resistance, wear resistance and crack resistance of the concrete can be improved, and facture toughness and shock resistance of the concrete can be greatly enhanced. As the middle part of the steel capsule wall is made from a ceramic material and the thickness is small, it can be guaranteed that the steel capsule at the concrete cracking position can timely crack, and a structural adhesive in the steel capsule flows out and infiltrates into cracks to be coagulated. Thus, self-healing of cracks of the concrete is realized. As the position and orientation of the steel capsules in the concrete are random, cracks in all directions can be repaired and healed after the steel capsules crack. As self-compacting concrete is used as the concrete in the member, the steel capsules in the concrete can be prevented from cracking during concrete vibrating.

Description

technical field [0001] The invention belongs to the technical field of concrete crack repair, and in particular relates to a self-sensing and self-healing concrete component. Background technique [0002] Concrete is a brittle material. Micro-cracks may occur during use, resulting in a decrease in the mechanical properties of concrete, and may even cause macro-cracks, which in turn lead to the failure of the concrete structure. Therefore, repairing the expanding cracks in time can well slow down the failure. [0003] At present, the main repair methods are the traditional after-event repair or regular repair, and the repair parts are generally where the concrete is prone to damage. Due to the limitation of the performance of repair materials, secondary cracking is easy to occur. When the building is an underground building, this repair method is no longer applicable. [0004] Another method is to use self-healing and self-repairing concrete, so that concrete cracks can be ...

AI Technical Summary

Problems solved by technology

But after the glass tube is broken, the glass exists in the concrete as an impurity, which is similar to the microcracks in the concrete, which will reduce the strength and toughness of the concrete, so the effect is not ideal

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