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Color-adjustable repairing agent and preparation method thereof and concrete containing repairing agent

A repairing agent and color technology, applied in the field of microbial self-healing concrete, can solve the problems of inconsistent color of concrete matrix, difference in color of concrete surface, and overall influence of concrete appearance, so as to meet the needs of appearance aesthetics and harmless ecology. Effect

Active Publication Date: 2021-09-21
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are still many problems in this technology in the field of concrete self-repair that need to be solved urgently, such as the color regulation of microbial mineralization products. There are color differences on the finished concrete surface, which affects the integrity of the concrete appearance
At present, the research on microbial self-healing concrete is reflected in the improvement of repair performance, but there are few reports on the regulation of the color of mineralized products

Method used

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  • Color-adjustable repairing agent and preparation method thereof and concrete containing repairing agent
  • Color-adjustable repairing agent and preparation method thereof and concrete containing repairing agent
  • Color-adjustable repairing agent and preparation method thereof and concrete containing repairing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Mix Bacillus colioids powder: calcium formate: dopamine in a mass ratio of 30:30:1 to make a mixed powder, use sucrose as the core, spread the sucrose particles flat, spray water mist on the surface of the particles Pour into the sugar-coating machine, spray the mixed powder and water mist into the sugar-coating machine in batches for coating and granulation, after the granulation is completed, sieve the restorative agent granules to get granules with a particle size of 1.75mm-2.36mm;

[0033] (2) Use the sugar coating machine to wrap the sulphoaluminate cement on the outside of the particles again, pour the sieved particles into the sugar coating machine again, and spray the sulphoaluminate cement and water mist to the sugar coating machine in batches for coating and granulation After the granulation is completed, sieve the restorative agent granules and take the particles with a particle size of 3.5mm to 4.0mm as the restorative agent;

[0034] (3) Put the restora...

Embodiment 2

[0039](1) Mix the Bacillus alkalophilus bacteria powder: calcium chloride: dopamine in a mass ratio of 10:10:1 to make a mixed powder, use sucrose as the core, spread the sucrose particles flat, and spray water mist on the surface of the particles. Pour it into the sugar-coating machine, spray the mixed powder and water mist into the sugar-coating machine in batches for powder-coating and granulation, and after the granulation is completed, sieve the restorative agent particles to obtain particles with a particle size of 1.75mm to 2.36mm;

[0040] (2) Use the sugar coating machine to wrap Portland cement on the outside of the particles again, pour the sieved particles into the sugar coating machine again, spray Portland cement and water mist into the sugar coating machine in batches for powder coating and granulation, and make After the granulation is completed, sieve the restorative agent granules and take the particles with a particle size of 3.5mm to 4.0mm as the restorative...

Embodiment 3

[0045] (1) Mix Bacillus colioids powder: calcium phosphate: dopamine in a mass ratio of 45:45:1 to make a mixed powder, use sucrose as the core, spread the sucrose particles flat, and spray water mist on the surface of the particles. Pour into the sugar-coating machine, spray the mixed powder and water mist into the sugar-coating machine in batches for coating and granulation, after the granulation is completed, sieve the restorative agent granules to get granules with a particle size of 1.75mm-2.36mm;

[0046] (2) Use the sugar coating machine to wrap the sulphoaluminate cement on the outside of the particles again, pour the sieved particles into the sugar coating machine again, and spray the sulphoaluminate cement and water mist to the sugar coating machine in batches for coating and granulation After the granulation is completed, sieve the restorative agent granules and take the particles with a particle size of 3.5mm to 4.0mm as the restorative agent;

[0047] (3) Put the ...

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Abstract

The invention discloses a color-adjustable repairing agent and a preparation method thereof and concrete containing the repairing agent; the repairing agent is a mixture of cement immobilized microbial powder, dopamine and a calcium source, and according to the total mass of the mixture, the mass percentage of the microbial powder is 44-54%, the mass percentage of the dopamine is 1-5%, and the mass percentage of the calcium source is 44-54%. According to the method, dopamine is doped into the microbial self-repairing agent, the cement immobilized microbial self-repairing agent is used for preparing repairing agent particles, the crack area of the microbial self-repairing concrete is repaired, and the repairing performance of the concrete and the color of a repairing product of the crack area are inspected. According to the method, organic matter and inorganic matter are combined, the color of a microbial mineralization product is regulated and controlled, the color difference between the mineralization product and a concrete matrix is reduced, and the aesthetic requirement for the surface appearance of the self-repairing concrete is met.

Description

technical field [0001] The invention belongs to a cement-based material and a preparation method, in particular to a repairing agent for microbial self-repairing concrete cracks, a preparation method thereof, and microbial self-repairing concrete using the repairing agent. Background technique [0002] Self-healing concrete refers to the composite method of repairing adhesive and concrete material, which has the function of self-repairing and regeneration for material damage and damage, and restores or even improves the performance of the concrete material. Self-healing concrete can solve difficult problems such as untimely repair and difficult construction in traditional passive repair methods. It has great potential in timely repair of major civil infrastructure and in reducing the impact of typhoons and earthquakes. Material safety and durability are of paramount importance. [0003] Microbial self-healing concrete belongs to the category of self-healing concrete. This t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B28/04
CPCC04B40/0039C04B28/04C04B24/04C04B24/121C04B2103/0001C04B22/124C04B22/16C04B14/06C04B14/14Y02W30/91C04B40/0042C04B20/1077C04B2111/72C04B2103/001C04B24/12C04B24/10C04B7/02C04B7/323C04B16/00
Inventor 钱春香任新涠陈沁文
Owner SOUTHEAST UNIV