A kind of anti-corrosion and anti-corrosion agent for concrete and its application

A technology of anti-corrosion agent and concrete, applied in concrete corrosion-resistant anti-corrosion agent and its application field, to achieve good wear resistance, good compressive strength, and the effect of protecting the ecological environment

Active Publication Date: 2021-06-15
CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to make full use of colored tailings slag resources, extract active ingredients therefrom, make a concrete corrosion-resistant and anti-corrosion agent, and add it to concrete to improve the performance of concrete and improve the use effect of concrete structures. At the same time Turn waste into wealth and reduce environmental pollution

Method used

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  • A kind of anti-corrosion and anti-corrosion agent for concrete and its application
  • A kind of anti-corrosion and anti-corrosion agent for concrete and its application

Examples

Experimental program
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Effect test

Embodiment 1

[0016] This example provides a concrete corrosion-resistant anti-corrosion agent and its preparation method. The colored tailings slag extract is extracted from the tailings slag of a non-ferrous metal mine in Gansu by chemical leaching, and the extract includes amorphous dioxide Silicon, calcium oxide, aluminum oxide and rare metal oxides, the weight ratio of each component in the extract is: amorphous silicon dioxide 70%, calcium oxide 10%, aluminum oxide 8%, rare metal Oxide 8%, other balance.

[0017] The above-mentioned colored tailings slag extract is crushed to form a mixture of ultrafine particles with a particle size of 5-30 nm, and the concrete corrosion-resistant and anti-corrosion agent of the present invention is obtained.

[0018] The shelf life of the material is half a year, and it should be stored in a cool, ventilated, dry place, protected from the sun and rain, and the storage temperature is 5~35°C.

Embodiment 2

[0020] The concrete anti-corrosion and anti-corrosion agent obtained in Example 1 is added to the concrete by external mixing, the ratio of admixture is based on the cement in the concrete, and 1 part of cement is mixed with 5-10% of the concrete anti-corrosion and anti-corrosion agent of the present invention to make the anti-corrosion and anti-corrosion The agent is evenly dispersed in the concrete; after hydration reaction with ordinary Portland cement, an inorganic composite compact body is formed. After testing, the performance index of concrete adding the corrosion-resistant and anti-corrosion agent of the present invention is as follows:

[0021]

[0022] The concrete can be applied to anticorrosion, waterproof, anti-seepage, anti-carbonation, etc. of reinforced concrete structures such as marine engineering, port terminals, bridges and tunnels, coastal engineering, water conservancy and hydropower, and other industrial and civil buildings, so as to improve the servic...

Embodiment 3

[0024] This embodiment provides a concrete anti-corrosion and anti-corrosion agent and its preparation method. Using the tailings slag from the non-ferrous metal deposits in Northwest China, the colored tailings slag extract is extracted from the tailings slag by chemical leaching, and the extract includes different Shaped silica, calcium oxide, aluminum oxide and rare metal oxides, the weight ratio of each component in the extract is: amorphous silica 75-80%, calcium oxide 5-6%, trioxide Dialuminum 5-6%, rare metal oxide 5-7%, other balance.

[0025] The above-mentioned colored tailings slag extract is crushed to form a mixture of ultrafine particles with a particle size of 50-80 nm, and the concrete corrosion-resistant and anti-corrosion agent of the present invention is obtained. The shelf life of the material is half a year, and it should be stored in a cool, ventilated, dry place, protected from the sun and rain, and the storage temperature is 5~35°C.

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Abstract

The invention provides a corrosion-resistant and anti-corrosion agent for concrete, the raw material of which is selected from colored tailings slag extract, which contains amorphous silica, calcium oxide, aluminum oxide and rare metal oxides, The proportions of various substances in the color tailings slag extract are: amorphous silica 70‑80%, calcium oxide 5‑10%, aluminum oxide 5‑10%, rare metal oxides 5‑8%, Others are surplus. The colored tailings slag extract is ultrafine nano-scale particles with a particle size of 1-100nm. The application method of the concrete anticorrosion and anticorrosion agent of the present invention is to add the anticorrosion and anticorrosion agent in the concrete material with 5%-20% of the weight of cement, so that the anticorrosion and anticorrosion agent is evenly dispersed in the concrete, and the anticorrosion and anticorrosion agent is mixed with cement through stirring After hydration reaction, after curing, a concrete structure with good corrosion resistance and durability is formed.

Description

technical field [0001] The invention relates to a corrosion-resistant and anti-corrosion agent for concrete, in particular to a corrosion-resistant and anti-corrosion agent made of colored tailings slag extract, which can improve the resistance to seawater erosion and harmful chemical substances of concrete when added to concrete. Increase the strength and aging resistance of concrete, and can be widely used in reinforced concrete structures such as marine engineering, port terminals, bridges and tunnels, coastal engineering, water conservancy and hydropower, and other industrial and civil buildings to improve the service life of concrete structures. Background technique [0002] Pollution from the development of non-ferrous metal minerals is very common in our country, and the harm caused is even more shocking. Generally speaking, some unusable "tailings" will be produced in the mining of various mineral resources, which will pollute the natural environment such as air and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B22/06C04B103/60
CPCC04B40/0039C04B2103/60C04B14/06C04B22/064C04B14/303C04B14/30C04B28/04
Inventor 王东林何鸣赵希娟韩宇栋王玮徐雪萍
Owner CENT RES INST OF BUILDING & CONSTR CO LTD MCC GRP
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