Oxidized-graphene concrete composite material resisting chloride ion penetration and preparation method thereof

A composite material and graphene technology, which is applied in the field of building materials, can solve problems such as insufficient durability and corrosion of concrete materials by chloride salts, and achieve the effects of good resistance to chloride ion penetration, increased content, and low content

Active Publication Date: 2017-08-18
THE SIXTH ELEMENT CHANGZHOU MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a graphene oxide concrete composite material that is resistant to chloride ion penetration in view of the problem that concrete materials are corroded by chloride salts and have insufficient durability.

Method used

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  • Oxidized-graphene concrete composite material resisting chloride ion penetration and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 1) Weigh 200g of graphene oxide, add it into 150L solvent prepared by water and ethanol according to the ratio of 5:1, stir evenly, disperse ultrasonically for 100min, adjust the Ph value of the above solution to 5.8 with glacial acetic acid, and then add to the Slowly add 60Kg of 1% KH550 silane coupling agent dropwise in the solution, stir evenly with a stirrer at a high speed, the rotating speed is 1000rpm, and the stirring time is 1h, and the Ph value of the modified graphene oxide suspension is adjusted to 5.9 with NaOH solution. use.

[0055] 2) Then weigh 120L of the modified graphene oxide suspension in step 1), add 32kg of silicon powder, and dry it in a forced air drying oven at 100°C to a constant weight before adding the silicon powder. Then move the reaction device added with silica fume-modified graphene oxide suspension into a water bath at 60°C, heat and stir for 45 minutes, after the reaction is completed, the graphene oxide-modified silica fume solutio...

Embodiment 2

[0059] 1) Take 600g of graphene oxide by weighing, join in the 500L solvent that water and ethanol are prepared according to the ratio of 5:1, after stirring evenly, ultrasonic dispersion 100min, the Ph value of above-mentioned solution is adjusted to 5.5 with glacial acetic acid, then add to this Slowly add 60kg of 5% KH550 silane coupling agent dropwise in the solution, stir evenly with a stirrer at a high speed, the rotating speed is 1200rpm, and the stirring time is 2h, and the Ph value of the modified graphene oxide suspension is adjusted to 5.5 with KOH solution. use.

[0060] 2) Then weigh 300L of the modified graphene oxide suspension in step 1), add 40kg of silicon powder, and dry it in a forced air drying oven at 100°C to constant weight before adding the silicon powder. Then move the reaction device added with silica fume-modified graphene oxide suspension into a water bath at 80°C, heat and stir for 55 minutes, after the reaction is completed, the graphene oxide-mo...

Embodiment 3

[0064] 1) Weigh 1000g of graphene oxide, add it into 800L solvent prepared by water and ethanol according to the ratio of 4:1, stir evenly, disperse ultrasonically for 80min, adjust the Ph value of the above solution to 6.0 with glacial acetic acid, and then add to the Slowly add 500kg of 1% KH560 silane coupling agent dropwise in the solution, stir evenly with a stirrer at a high speed, the rotating speed is 1500rpm, the stirring time is 1.2h, and the Ph value of the modified graphene oxide suspension is adjusted to 5.0 with NaOH solution, stand-by.

[0065] 2) Then weigh 280L of the modified graphene oxide suspension in step 1), add 30kg of silicon powder, and dry it in a blast drying oven at 100°C to a constant weight before adding the silicon powder. Then move the reaction device added with silica fume-modified graphene oxide suspension into a water bath at 55°C, heat and stir for 55 minutes, after the reaction is completed, the graphene oxide-modified silica fume solution...

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Abstract

The invention discloses oxidized-graphene modified silicon ash and a preparation method thereof, oxidized-graphene concrete resisting chloride ion penetration and a method thereof. Each cubic meter of oxidized-graphene concrete contains the following components in mass by weight: 150-350kg/m3 of cement, 40-100kg/m3 of coal powder ash, 800-1300kg/m3 of coarse aggregate, 500-700kg/m3 of fine aggregate, 20-50kg/m3 of oxidized-graphene modified silicon ash, 0.5-8.0kg/m3 of water reducing agent and 105-175kg/m3 of water. The oxidized-graphene modified silicon ash and the preparation method disclosed by the invention have the advantages that firstly the oxidized-graphene modified silicon ash is prepared by an electrostatic self-absorption method, the oxidized graphene can be uniformly coated on the surface of the silicon ash by the method, and then the oxidized-graphene modified silicon ash is uniformly dispersed in the concrete by designing the proportioning ratio of the concrete; researches show that the mechanical property and the chloride ion penetration resistance of the oxidized-graphene concrete prepared by the invention are obviously improved, so that the oxidized-graphene concrete has important significance for developing cement concrete materials with high property and high functionalization.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a chloride ion permeation-resistant graphene oxide concrete composite material and a preparation method thereof. Background technique [0002] Concrete is the most widely used building material in the world today. Strength and durability are its two important indicators. Good durability is the key factor to ensure the service life of concrete and engineering safety, so it has been paid more and more attention by people. With the development of the economy, the development of marine resources has been paid more and more attention by various countries, and there are more and more concrete buildings in the marine environment. Cement concrete is the main structural material used in marine engineering at home and abroad. Since the concrete structure is not easy to repair after damage, the marine engineering concrete is required to have good durability. However, the durab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/14C04B20/02C04B111/20
CPCC04B18/146C04B20/023C04B28/04C04B2111/20C04B2201/50C04B18/08C04B14/02C04B22/002C04B24/24C04B14/06Y02W30/91
Inventor 郑雅轩张娟娟赖健平蒋晓峰瞿研
Owner THE SIXTH ELEMENT CHANGZHOU MATERIALS TECH
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