Single-component healing capsule and self-healing concrete

A one-component, concrete technology, applied in the field of engineering materials, can solve the problems of difficult penetration of the healing agent, low self-healing efficiency, high viscosity, etc., and achieve the effects of good fluidity, high healing efficiency, and low viscosity
CN106747653AInactive Publication Date: 2017-05-31SHANDONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG UNIV OF SCI & TECH
Publication Date
2017-05-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a single-component healing capsule and self-healing concrete. The single-component healing capsule provided by the invention comprises a capsule wall, a plugging material plugged at the opening of the capsule wall and a single-component healer plugged in the capsule wall, wherein the single-component healer comprises polyurethane and diluter. The single-component healing capsule provided by the invention takes a mixture of polyurethane and diluter as the healer, and the intermolecular action force of the polyurethane is changed through dilution of the diluter, so that the healer has favorable flowability, and the healer can flow evenly in a crack and be solidified and cemented within certain time after the capsule is ruptured. Experimental results indicate that the healer can be uniformly released into the crack after the single-component healing capsule is ruptured; crack healing is realized through cementation with concrete; and the healing efficiency can be up to 32.2% one day after two capsules are ruptured, the healing efficiency can be up to 77.6% two days after two capsules are ruptured, and the healing efficiency can be up to 75.2% three days after two capsules are ruptured.
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Description

technical field

[0001] The invention relates to the technical field of engineering materials, in particular to a single-component healing capsule and self-healing concrete. Background technique

[0002] Concrete is now a widely used building material, but it will be damaged and produce micro-cracks under the action of force or other factors during use. These damages are invisible, but if they cannot be repaired in time, the mechanical properties of concrete will be reduced, and even Macroscopic cracks may be induced, allowing water to infiltrate and lead to corrosion of steel bars, reducing the earthquake resistance and service life of concrete structures. At present, the main method adopted in the anti-seismic design of structures is to increase the size of the structure and increase the amount of steel bars, but this not only increases the cost of the structure, but also is not beautiful; and the manual passive repair of concrete cracks is also very time-consuming, labor-i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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