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A kind of high-strength cement-based inorganic nano repair material and preparation method thereof

A high-strength cement, inorganic nanotechnology, applied in the field of building materials and cement concrete admixtures, can solve problems such as high indirect costs, high maintenance costs, and difficulty in repairing

Active Publication Date: 2022-02-22
SHANDONG HONGYI TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the commonly used artificial repair methods currently implemented, the service life of cement-based material structures can be extended, but there are still certain limitations: because manual repair requires a lot of manpower and resources, the repair cost is usually very high. If bridges, bridges, etc. The maintenance of infrastructure structures such as tunnels must be withdrawn from service, and the resulting indirect costs are usually several times higher than the direct costs; in addition to expensive maintenance costs, there are also huge differences in the performance of repair materials that rely on manual repair. The adaptability of different types of building structures makes it difficult to achieve durable repairs

Method used

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  • A kind of high-strength cement-based inorganic nano repair material and preparation method thereof
  • A kind of high-strength cement-based inorganic nano repair material and preparation method thereof
  • A kind of high-strength cement-based inorganic nano repair material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A high-strength cement-based inorganic nano-repair material, prepared from the following raw materials in parts by weight: 200 parts of superfine cement, 20 parts of sulphoaluminate cement, 80 parts of slag micropowder, 0.8 part of polycarboxylate water reducer, 3 parts of effect agent, 5 parts of nano-silica penetrating repair solution, the rest is tap water, and the water-cement ratio is 0.3.

[0026] The preparation method of the nano-silica penetrating repair liquid is as follows: add deionized water and sodium fluoride in a water bath at 65°C, mix and stir evenly for 50 minutes, then add polyethylene glycol octylphenyl ether, coconut oil Diethanolamine and sodium petroleum sulfonate continue to stir at a constant temperature of 65°C for 30 minutes, and finally add hydrophilic nano-silica and stir at a constant temperature for 60 minutes, then stop heating and cool down to room temperature, and continue stirring for 60 minutes to obtain the nano-silica infiltration r...

Embodiment 2

[0039] A high-strength cement-based inorganic nano-repair material, prepared from the following raw materials in parts by weight: 240 parts of superfine cement, 60 parts of sulphoaluminate cement, 100 parts of slag micropowder, 1.5 parts of polycarboxylate superplasticizer, 5 parts of effect agent, 6 parts of nano-silica penetrating repair solution, the rest is tap water, and the water-cement ratio is 0.35.

[0040] The preparation method of the nano-silica penetrating repair liquid is as follows: add deionized water and sodium fluoride in a water bath at 65°C, mix and stir evenly for 50 minutes, then add polyethylene glycol octylphenyl ether, coconut oil Diethanolamine and sodium petroleum sulfonate continue to stir at a constant temperature of 65°C for 30 minutes, and finally add hydrophilic nano-silica and stir at a constant temperature for 60 minutes, then stop heating and cool down to room temperature, and continue stirring for 60 minutes to obtain the nano-silica infiltra...

Embodiment 3

[0053] A high-strength cement-based inorganic nano-repair material, prepared from the following raw materials in parts by weight: 250 parts of superfine cement, 60 parts of sulphoaluminate cement, 90 parts of slag micropowder, 1.2 parts of polycarboxylate superplasticizer, 6 parts of effect agent, 9 parts of nano-silica penetrating repair fluid, the rest are tap water, and the water-cement ratio is 0.4.

[0054] The preparation method of the nano-silica penetrating repair liquid is as follows: add deionized water and sodium fluoride in a water bath at 65°C, mix and stir evenly for 50 minutes, then add polyethylene glycol octylphenyl ether, coconut oil Diethanolamine and sodium petroleum sulfonate continue to stir at a constant temperature of 65°C for 30 minutes, and finally add hydrophilic nano-silica and stir at a constant temperature for 60 minutes, then stop heating and cool down to room temperature, and continue stirring for 60 minutes to obtain the nano-silica infiltration...

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Abstract

The invention discloses a high-strength cement-based inorganic nano repair material and a preparation method thereof, belonging to the technical field of building materials and cement concrete admixtures. The nano repair material of the present invention is prepared from the following raw materials by weight: 200-300 parts of superfine cement, 20-60 parts of sulphoaluminate cement, 80-110 parts of slag micropowder, and 0.8-110 parts of polycarboxylate superplasticizer 1.5 parts, 3-8 parts of synergist, 5-10 parts of nano-silica penetrating repair solution, the rest is tap water, and the water-cement ratio is 0.3-0.45. The repairing material of the present invention can repair concrete cracks in a short time, can achieve uninterrupted traffic construction for traffic hubs, and alleviate economic losses and social impacts caused by excessively long construction periods. At the same time, the strength and durability of cement concrete can be significantly improved, and the prepared repair material is a green and environmentally friendly material, which has broad economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of building materials and cement concrete admixtures, and in particular relates to a high-strength cement-based inorganic nano repair material and a preparation method thereof. Background technique [0002] In the field of construction, cement concrete has the advantages of excellent mechanical strength, good durability, and strong engineering adaptability. It has become the largest and most widely used building material in the world, such as construction engineering, road engineering, bridges and tunnels. engineering etc. However, the tensile strength of cement concrete is low. During the long-term service, due to the effect of environment and load, the interior of cement concrete is prone to micro-cracks and local damage. If cracks of different degrees are allowed to expand without corresponding treatment, it will have a huge impact on the safety, durability and reliability of the building structure. Cra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06C04B24/32C04B111/72
CPCC04B28/06C04B40/0039C04B2111/72C04B2201/50
Inventor 王志强陈烽鲁江张辉吕晓冯恩娟张晓娇赵晓芳
Owner SHANDONG HONGYI TECH