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A composite rust inhibitor for reinforced concrete based on natural gluten

A technology of reinforced concrete and gluten is applied in the field of reinforced concrete composite rust inhibitor, which can solve the problem of high cost and achieve the effects of inhibiting corrosion of steel bars and improving durability.

Active Publication Date: 2022-03-15
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the urgent demand for environmental indicators such as low energy consumption and zero emissions in modern society, some harmful, toxic and costly rust inhibitors will be gradually restricted and banned. Environmentally friendly plant-based rust inhibitors have gradually attracted attention at home and abroad. Wide attention of researchers

Method used

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  • A composite rust inhibitor for reinforced concrete based on natural gluten
  • A composite rust inhibitor for reinforced concrete based on natural gluten

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, mix 3g of alkali-soluble glutenin with 5g of silica fume and 1.5g of calcium sulfate in a mortar to obtain a composite rust inhibitor; secondly, mix the composite rust inhibitor with 95g of cement and 300g of sand in a mixing pot After dry mixing evenly, introduce 60g of tap water containing 1.66g of sodium chloride and wet mix for 2 minutes, pour the prepared mortar into three cylindrical specimens and three cubic specimens. After being molded for 24 hours, it will be removed from the mold, and it will be raised until 28 days before use.

Embodiment 2

[0024] Firstly, mix 2.5g of alkali-soluble glutenin, 5g of silica fume and 0.02g of triethanolamine in an agate mortar and use it as a composite rust inhibitor, then dry mix it with 95g of cement and 300g of sand in a stirring pot, and then Introduce 60g of tap water containing 1.66g of sodium chloride and wet mix for 2 minutes, pour the mixed mortar into three cylindrical specimens and three cubic specimens, and standardize for 28 days for use.

Embodiment 3

[0026] First, mix 2.5g of alkali-soluble glutenin, 10g of finely ground slag and 3g of calcium nitrate in an agate mortar to make a composite rust inhibitor, and then dry mix it with 90g of cement and 300g of sand in a stirring pot, and then Introduce 60g of tap water containing 1.66g of sodium chloride and wet mix for 2 minutes, and pour the mixed mortar into three cylindrical specimens and three cubic specimens each. After 24 hours of molding, it is demoulded, and it is standard-raised until 28 days before use.

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Abstract

The invention belongs to the field of corrosion science and engineering technology, in particular to a composite rust inhibitor for reinforced concrete based on natural gluten. The composite rust inhibitor consists of natural gluten, additives and auxiliary materials, and can be used to slow down or inhibit the corrosion of steel bars in reinforced concrete structures under the corrosion of chloride ions or carbon dioxide. The composite rust inhibitor of the present invention is an environment-friendly rust inhibitor for steel bars, has the characteristics of green, low toxicity, simple preparation process, easy access to gluten, and renewable resources, and is suitable for steel bar corrosion protection in concrete structural engineering, and has good application prospects.

Description

technical field [0001] The invention belongs to the field of corrosion electrochemistry science and technology, in particular to a composite rust inhibitor for reinforced concrete based on natural gluten. Background technique [0002] Concrete is still one of the main building materials today because of its rich sources of raw materials, low prices, and simple and mature production processes. Under normal circumstances, concrete has a protective effect on the steel bars embedded in it, because the highly alkaline pore fluid of calcium hydroxide and potassium, sodium and other ions produced by cement hydration will passivate the surface of the steel bar to form a dense Because of the oxide film protection layer. However, due to the reduction of pH caused by carbonation of concrete or the contamination by chloride corrosion, the passivation film will be destroyed and steel corrosion will occur, and the accumulation of corrosion products will cause sudden expansion stress and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/14C04B103/61
CPCC04B40/0039C04B2103/61C04B24/14C04B18/146C04B22/085C04B24/122
Inventor 张召才张津瑞祝瑜
Owner HENAN POLYTECHNIC UNIV
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