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BE rust inhibitor based method and device for restoring electroosmotic salt polluted buildings

A repair method and rust inhibitor technology, which is applied in the repair field of salt-contaminated structures, can solve problems such as difficult construction, high cost, and easy recurrence, and achieve the effects of reducing raw material costs, cost reduction, and consumption reduction

Inactive Publication Date: 2010-07-28
南京艾米伦斯科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to invent a repair method and device based on electroosmotic salt-contaminated structures with BE rust inhibitors, aiming at problems such as difficult construction, high cost, and easy recurrence in existing repair methods for salt-contaminated buildings.

Method used

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  • BE rust inhibitor based method and device for restoring electroosmotic salt polluted buildings
  • BE rust inhibitor based method and device for restoring electroosmotic salt polluted buildings
  • BE rust inhibitor based method and device for restoring electroosmotic salt polluted buildings

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A kind of restoration method based on BE rust inhibitor electroosmotic salt pollution structure, it comprises the following steps:

[0038] The first step is to fix the steel mesh used as the anode material on the surface of the structure. The total cross-sectional area should be able to ensure the safe passage of the required current, and its corrosion consumption should be considered;

[0039] In the second step, a rust inhibitor-electrolyte retention and / or circulation system is set on the surface of the structure, covering the steel mesh as the anode material, and injecting the electrolyte (such as Ca(OH) 2 , LioH, NaCO 3 , NaOH aqueous solution, etc.) and BE rust inhibitor. The amount of rust inhibitor added is 3-30% by volume, which is determined according to the concentration of chloride ions in the concrete, the total surface area of ​​the steel bars, and the electrification time. During specific construction, the first step and the second step can be reversed...

Embodiment 2

[0057] A kind of electroosmosis restoration method based on polluting structure with BE rust inhibitor electroosmosis salt, it comprises the following steps:

[0058] The first step is to make an assembly sheet combining flexible water-absorbing material and anode metal (any one of steel mesh, stainless steel, copper, platinum-plated titanium and MMO grid can be used). The assembly sheet is composed of waterproof membrane (cloth), water-absorbing material (non-woven fabric, sponge, foam material, etc.), flexible plastic net, and the anode metal material is worn in the plastic net. The anode is connected by plastic rivets, pressure strips, plastic grids, etc. The flexible assembly sheet is fixed on the concrete surface. Each flexible assembly sheet is provided with an anode material lead joint.

[0059] In the second step, the electrolyte (such as Ca(OH) 2 , LioH, NaCO 3 , NaOH aqueous solution, etc.) and BE rust inhibitor. The amount of rust inhibitor added is 3-30% by vol...

Embodiment 3

[0062] The difference between this embodiment and Embodiments 1 and 2 is that the rust inhibitor-electrolyte maintenance circulation system is mainly composed of an upper water tank, a lower water tank and a circulation pump. 7 connected, the upper water tank is provided with a water outlet, the electrolyte flowing out of the water outlet is poured on the surface of the anode material, the upper water tank and the lower water tank are connected by a connecting pipe and a circulation pump, so that the rust inhibitor and electrolyte of the upper water tank After flowing through the surface of the anode, it falls into the lower water tank, and is pumped to the upper water tank in time, and the cycle is repeated. The rest are the same as embodiment one.

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Abstract

The invention relates to BE rust inhibitor based method and device for restoring electroosmotic salt polluted buildings. The invention is characterized in that the method mainly comprises the following steps of: (1) setting a rust inhibitor-electrolyte maintaining and circulating system on the building surface; (2) injecting the BE rust inhibitor and the electrolyte into the rust inhibitor-electrolyte maintaining and circulating system; (3) arranging an anode in the rust inhibitor-electrolyte maintaining and circulating system; (4) connecting the anode with a positive electrode of a direct current power supply, and connecting a negative electrode of the power supply with a reinforced steel bar in the building; controlling the current density, and continuously energizing until the BE rust inhibitor effective groups are enriched in the vicinity of the reinforced steel bar in the restored concrete and a protecting film is formed on the surface of the reinforced steel bar. The invention has the effect for discharging chloride ions under the action of the electric field, and has the advantages of simplicity, easy operation, long restoring protection period, low cost and good effect.

Description

technical field [0001] The present invention relates to a repair method and device for salt-contaminated structures, in particular to an electroosmotic repair method for salt-contaminated buildings, specifically a repair method and device based on electroosmotic salt-contaminated structures using BE rust inhibitors . Background technique [0002] The repair of salt-contaminated concrete structures is a worldwide perennial problem. It is much more difficult than the repair of carbonized concrete structures. Although it causes corrosion damage to reinforced concrete, whether it is carbonation or salt pollution, it is the electrochemical corrosion of steel in concrete, but each has different electrochemical characteristics. The resistance of carbonized concrete The rate is high, and the macroscopic and microscopic galvanic couples that constitute this electrochemical corrosion are limited to the corrosion range. After repairing, the entire galvanic couple is gone, and long-ter...

Claims

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Application Information

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IPC IPC(8): C23F11/14
Inventor 洪定海王定选刘农
Owner 南京艾米伦斯科技开发有限公司
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