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Method for preparing concrete toughening and reinforcing additive from waste tires

A technology for waste tires and concrete, applied in solid waste management, sustainable waste treatment, climate sustainability, etc., can solve problems such as poor tear resistance and poor film elasticity

Inactive Publication Date: 2020-04-21
安徽蜀牛数据科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese patent CN107722411A discloses a method for recycling waste tires, which specifically includes the following steps: cutting and crushing the waste tire rubber, and then separating and screening the steel wire and fiber components in the waste tire rubber particles, and then the obtained waste tires The tire particles are cleaned, soaked, and dried, and the dried waste tire particles are sent to a fine crusher for further grinding to obtain finished rubber powder. Finally, the rubber powder obtained above is processed according to the waste tire rubber powder: butyl rubber: Sulfur: Vulcanizing agent DTDM: Accelerator DM: Zinc oxide: Stearic acid: Carbon black: Paraffin oil: Processing aid H501: Tackifier TKO-90: Antiaging agent The quality is 50:20:0.7:0.45:0.4:3.0 The formula of :0.6:30:13.5:1.6:2.2:0.35 is used to produce the film. The film prepared by the above formula has good mechanical properties, wear resistance, corrosion resistance and oil resistance, etc., and can be applied to various wheels In the production of inner tubes, the film produced by reprocessing waste tires has poor elasticity and poor tear resistance, so it is not suitable for recycling to make recycled rubber

Method used

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  • Method for preparing concrete toughening and reinforcing additive from waste tires

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method of using waste tires to manufacture concrete toughening and strengthening additives is as follows:

[0030] After the waste tires are washed with a high-pressure water gun, the surface stains are immersed in the following components: 55 parts by weight of sodium dodecylbenzene sulfonate, 25 parts of fatty alcohol polyoxyethylene ether sodium sulfate, and nonylphenol polyoxyethylene ether 10 parts, 12 parts of N,N-bis(hydroxyethyl) cocamide, 6 parts of octanediol, and 900 parts of water in a neutral washing liquid, ultrasonically shake for 50 minutes, take out the clean water, rinse and dry, and mechanically crushed through 90 mesh After the waste steel wire is removed by the screen and magnetic separation, it is added to the sodium hydroxide solution with a mass concentration of 10% and then organic bentonite is added. The mass ratio of the organic bentonite to the rubber particles is 1:2. For 24h, filter, put the rubber particles in an oven at 85℃ for drying; und...

Embodiment 2

[0033] A method of using waste tires to manufacture concrete toughening and strengthening additives is as follows:

[0034] After the waste tires are washed with a high-pressure water gun, the surface stains are immersed in the following components: 50 parts by weight of sodium dodecylbenzene sulfonate, 22 parts of fatty alcohol polyoxyethylene ether sodium sulfate, and nonylphenol polyoxyethylene ether 8 parts, 12 parts of N,N-bis(hydroxyethyl) cocamide, 6 parts of octanediol, and 800 parts of water in a neutral washing solution, ultrasonically shake for 45 minutes, take out the clean water, rinse, dry, and mechanically crush 80 meshes After removing the waste steel wire by using a sieve and magnetic separation, it is added to a sodium hydroxide solution with a mass concentration of 12% and then organic bentonite is added. The mass ratio of organic bentonite to rubber particles is 1:1. 25h, filter, put the rubber particles in an oven at 85℃ for drying; under the protection of ni...

Embodiment 3

[0037] A method of using waste tires to manufacture concrete toughening and strengthening additives is as follows:

[0038] After the waste tires are washed with a high-pressure water gun, the surface stains are immersed in the following components: 42 parts by weight of sodium dodecylbenzene sulfonate, 35 parts of fatty alcohol polyoxyethylene ether sodium sulfate, and nonylphenol polyoxyethylene ether 6 parts, 8 parts of N,N-bis(hydroxyethyl) cocamide, 5 parts of octanediol, 1000 parts of water, in a neutral washing solution, ultrasonically shake for 40 minutes, take out the clean water, rinse, dry, and mechanically crush it through 100 mesh After removing the waste steel wire through a sieve and magnetic separation, it is added to a sodium hydroxide solution with a mass concentration of 8% and then organic bentonite is added. The mass ratio of organic bentonite to rubber particles is 1:1. 20h, filter, put the rubber particles in an oven at 90℃ for drying; under the protection ...

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Abstract

The invention provides a method for preparing a concrete toughening and reinforcing additive from waste tires, and relates to the technical field of waste tire reutilization. The method comprises thefollowing steps: cleaning and airing the waste tires, mechanically crushing the waste tires, adding the crushed waste tires into a sodium hydroxide solution, adding organic bentonite, filtering, and drying; preparing a polyurethane emulsion; and mixing the rubber particles with mineral powder, diatomite, reinforced fibers and biocolloid, then adding the mixture into the polyurethane emulsion, supplementing a proper amount of water, stirring for 30-40 min at room temperature at 800-1000 r / min, heating the obtained mixture to 40-50 DEG C, stirring for 8-15 min at 200-400 r / min, and naturally cooling the obtained mixture to room temperature. The addition of the prepared additive can greatly improve the compression resistance, the tensile strength and the impact resistance of the concrete, andthe additional treatment on the rubber particles and the composite use of the rubber particles and other components have a great promotion effect on the performance improvement of the additive.

Description

Technical field [0001] The invention relates to the technical field of waste tire reuse, in particular to a method for manufacturing concrete toughening and strengthening additives by using waste tires. Background technique [0002] With the rapid increase in private car ownership, the disposal of waste tires has become a huge obstacle to the sustainable development of the automotive industry. As waste tires are difficult to degrade organic polymer materials, how to recycle them has also become an environmental problem. [0003] China’s annual production of waste tires amounts to more than 8 million tons, accounting for 38% of the world’s total production of waste tires. According to statistics from the World Environmental Health Organization, the world’s waste tire stocks have reached 3 billion, and it is estimated to be about 1 billion per year. The number of surprises has increased. The long-term storage of waste tires in the open air not only takes up a lot of land, but also e...

Claims

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Application Information

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IPC IPC(8): C04B24/42C04B18/22
CPCC04B18/22C04B40/0046C04B24/42C04B18/12C04B14/08C04B24/38C04B16/0683C04B16/0691C04B16/0675C04B14/42C04B14/386C04B14/38Y02W30/91
Inventor 王雅婷
Owner 安徽蜀牛数据科技有限公司