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High-strength asphalt mixture and preparation method thereof

A technology of asphalt mixture and asphalt binder, applied in the field of asphalt, can solve the problems of reducing the service life of pavement, low hardness of limestone, low intensity of asphalt, etc., and achieve the effects of prolonging the service life, improving the waterproofness of the pavement, and improving the quality of the pavement

Inactive Publication Date: 2016-05-11
SICHUAN GUOXING POLYMER RESIN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently commonly used asphalt has low strength. After years of use, the road surface is prone to ruts, dents, cracks and even breaks, causing traffic hazards and greatly reducing the service life of the road surface. At the same time, the asphalt pavement is exposed to moisture. Under the repeated action of traffic load and temperature expansion and contraction, water intrusion, the asphalt film gradually peels off from the aggregate surface and is damaged, and the conventional asphalt raw materials often contain toxic substances, which will pollute the environment and damage human health after volatilization
[0003] Limestone has good processability, cementation, insoluble in water, and has good cementation, so it is often used as the aggregate of asphalt concrete for paving roads. In the case of high power requirements, it is difficult to meet the existing needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] (1) Aggregate treatment: respectively process limestone and alkaline granite with a crusher, select coarse aggregate with a particle size of 20-35mm, and then take part of the crushed limestone and crush it with a sand making machine, and select a particle size of 1 -4.5mm fine aggregate for spare;

[0061] (2) Material preparation: Weigh elastic resin with a mass percentage of 18.35%, asbestos wool 3.20%, waste rubber 36.00%, rosin 14.00%, water reducing agent 0.20%, paraffin wax 1.85%, diacetone alcohol 7.10%, stearamide 0.30 After fully mixing, heat up to 100-120 degrees Celsius;

[0062] (3) Add 0.30% emulsifier and 0.40% palmitic acid to the mixture obtained in step (2), and mix for 10-30 minutes;

[0063] (4) Weigh 0.60% fiber stabilizer, mix it with 0.25% silica with a fineness of 400-450 mesh, heat the material obtained in step (3) to 195 degrees Celsius, add fiber stabilizer mixed with silica agent, mix thoroughly;

[0064] (5) Reduce the temperature of the ...

Embodiment 2

[0067] (1) Aggregate treatment: respectively process limestone and alkaline granite with a crusher, select coarse aggregate with a particle size of 20-35mm, and then take part of the crushed limestone and crush it with a sand making machine, and select a particle size of 1 -4.5mm fine aggregate for spare;

[0068] (2) Material preparation: Weigh elastic resin with a mass percentage of 20.00%, asbestos wool 4.50%, waste rubber 32.00%, rosin 15.00%, water reducing agent 0.52%, paraffin wax 3.20%, diacetone alcohol 7.05%, stearamide 0.45% After fully mixing, heat up to 100-120 degrees Celsius;

[0069] (3) Add 0.42% emulsifier and 0.48% palmitic acid to the mixture obtained in step (2), and mix for 10-30 minutes;

[0070] (4) Weigh 0.85% fiber stabilizer, mix it with 0.40% silica with a fineness of 400-450 mesh, heat the material obtained in step (3) to 195 degrees Celsius, add fiber stabilizer mixed with silica agent, mix thoroughly;

[0071] (5) Reduce the temperature of the...

Embodiment 3

[0074] (1) Aggregate treatment: respectively process limestone and alkaline granite with a crusher, select coarse aggregate with a particle size of 20-35mm, and then take part of the crushed limestone and crush it with a sand making machine, and select a particle size of 1 -4.5mm fine aggregate for spare;

[0075] (2) Material preparation: Weigh elastic resin with a mass percentage of 21.40%, asbestos wool 5.00%, waste rubber 28.00%, rosin 17.00%, water reducing agent 0.50%, paraffin wax 3.00%, diacetone alcohol 7.20%, stearamide 0.80 After fully mixing, heat up to 100-120 degrees Celsius;

[0076] (3) Add 0.70% emulsifier and 0.80% palmitic acid to the mixture obtained in step (2), and mix for 10-30 minutes;

[0077] (4) Weigh 1.20% fiber stabilizer, mix it with 0.50% silica with a fineness of 400-450 mesh, heat the material obtained in step (3) to 195 degrees Celsius, add fiber stabilizer mixed with silica agent, mix thoroughly;

[0078] (5) Reduce the temperature of the ...

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Abstract

The invention discloses a high-strength asphalt mixture and a preparation method thereof. The asphalt mixture comprises the components of elastic resin, waste rubber, rosin, diacetone alcohol, asbestos wool, a water reducer, paraffin, epoxy resin, stearamide, a curing agent, palmitic acid, an emulsifier, a fiber stabilizer, and silicon dioxide. The main method of a preparation process comprises: crushing and heating limestone and alkali granite, and then mixing the crushed materials with a premixed and preheated asphalt binding material for full reaction. The asphalt mixture has the characteristics of good toughness, high strength, water resistance, corrosion resistance, low toxicity and environmental friendliness, and can effectively prolong the service life of an asphalt pavement.

Description

technical field [0001] The invention relates to the field of asphalt, in particular to a high-strength asphalt mixture and a preparation method thereof. Background technique [0002] Asphalt is widely used in highway pavement structure due to its excellent adhesion and thermoplasticity. At present, the asphalt used in highway pavement is mostly a mixture of asphalt and concrete, which is mixed, paved and solidified at high temperature or normal temperature. The currently commonly used asphalt has low strength. After years of use, the road surface is prone to ruts, dents, cracks and even breaks, causing traffic hazards and greatly reducing the service life of the road surface. At the same time, the asphalt pavement is exposed to moisture. Under the repeated action of traffic load and temperature expansion and contraction, water intrusion, the asphalt film gradually peels off from the aggregate surface and is damaged, and the conventional asphalt raw materials often contain t...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B14/28C04B14/04C04B20/00C04B16/02C04B24/02C04B24/12C04B24/08
CPCC04B26/26C04B2111/0075
Inventor 王洪魏道新陈景郭朝阳
Owner SICHUAN GUOXING POLYMER RESIN CO LTD
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