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Concrete-autolysis-type rapid self-repairing system in water environment and preparing method thereof

A self-dissolving concrete technology, applied in the field of concrete engineering, can solve the problems of inconvenient practical application and cumbersome preparation process, and achieve the effects of large absolute value of strength and incremental value, good repairability, and rapid hydration

Active Publication Date: 2016-05-04
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the concrete self-repair system disclosed in this patent can achieve intelligent repair of concrete without adding culture medium, the preparation process is cumbersome and the actual application is inconvenient.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] In this embodiment, a self-dissolving rapid self-repair system for concrete under water environment, the system includes a concrete matrix and self-dissolving composite microspheres filled in the concrete matrix, and the surface of the self-dissolving composite microspheres is covered with autolytic Type protective film, the center is a composite mineral composed of tricalcium silicate and tricalcium aluminate.

[0046] Among them, the mass percentage of the self-dissolving composite microspheres in the gelling material is 8wt%, while the mass ratio of tricalcium silicate to tricalcium aluminate is 2:1, and the outer diameter of the self-dissolving composite microspheres is 1-2 μm , The thickness of the self-dissolving protective film is 20-50nm.

[0047] Tricalcium silicate is TC3S crystalline tricalcium silicate, tricalcium aluminate is monomineral tricalcium aluminate, and the self-dissolving protective film is an unsaturated polyester protective film containing este...

Embodiment 2

[0059] In this embodiment, a self-dissolving rapid self-repair system for concrete under water environment, the system includes a concrete matrix and self-dissolving composite microspheres filled in the concrete matrix, and the surface of the self-dissolving composite microspheres is covered with autolytic Type protective film, the center is a composite mineral composed of tricalcium silicate and tricalcium aluminate.

[0060] Among them, the mass percentage of the self-dissolving composite microspheres in the gelling material is 12wt%, while the mass ratio of tricalcium silicate to tricalcium aluminate is 4:1, and the outer diameter of the self-dissolving composite microspheres is 1-2 μm , The thickness of the self-dissolving protective film is 20-50nm.

[0061] Tricalcium silicate is MC3S crystalline tricalcium silicate, tricalcium aluminate is monomineral tricalcium aluminate, and the self-dissolving protective film is an unsaturated polyester protective film containing est...

Embodiment 3

[0069] In this embodiment, a self-dissolving rapid self-repair system for concrete under water environment, the system includes a concrete matrix and self-dissolving composite microspheres filled in the concrete matrix, and the surface of the self-dissolving composite microspheres is covered with autolytic Type protective film, the center is a composite mineral composed of tricalcium silicate and tricalcium aluminate.

[0070] Among them, the mass percentage of self-dissolving composite microspheres in the gelling material is 10wt%, while the mass ratio of tricalcium silicate to tricalcium aluminate is 3:1, and the outer diameter of self-dissolving composite microspheres is 1-2 μm , The thickness of the self-dissolving protective film is 20-50nm.

[0071]Tricalcium silicate is RC3S crystalline tricalcium silicate, tricalcium aluminate is monomineral tricalcium aluminate, and the self-dissolving protective film is an unsaturated polyester protective film containing ester bonds ...

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Abstract

The invention relates to a concrete-autolysis-type rapid self-repairing system in the water environment. The concrete-autolysis-type rapid self-repairing system comprises a concrete base body and autolysis-type composite microspheres with which the concrete base body is filled, the surfaces of the autolysis-type composite microspheres are coated with autolysis-type protective films, and complex minerals formed by mixing tricalcium silicate and tricalcium aluminate are arranged in the centers of the autolysis-type composite microspheres. Compared with the prior art, the autolysis-type rapid self-repairing system can be widely applied to the hydraulic concrete structure, the marine concrete structure and the underground concrete structure, self healing of concrete cracked in the water environment can be generated, cost is low, the effect is remarkable, the problems that a traditional repairing method is large in cost and poor in effect are solved, and durability of the concrete is improved.

Description

technical field [0001] The invention belongs to the technical field of concrete engineering, and relates to a concrete self-dissolving type rapid self-repair system in a water environment and a preparation method thereof. Background technique [0002] The design life of the urban rail transit tunnel structure is 100 years. The rock and soil conditions in which it is located are complex, the surrounding environment is sensitive, the train running density is extremely high, and the service conditions are harsh. Or cannot be replaced, and will induce underground engineering disasters. Cracks in cement-based materials are the root cause of premature structural failure. The self-healing system of cement-based materials provides a new method for the repair of micro-cracks in the concrete matrix and effectively delays potential damage. A self-healing system will eliminate the high cost of effective monitoring and external repair, and avoid manual Problems such as the outage of ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B20/10C04B7/02C04B7/32C04B7/36
CPCC04B7/02C04B7/32C04B7/36C04B20/1033C04B20/1037
Inventor 蒋正武任强仇铄陈庆
Owner TONGJI UNIV
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