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Warm mix asphalt viscosity breaking agent

A technology of warm mix asphalt and viscosity reducer, which is used in the field of bridge, road and tunnel paving materials, can solve the problems of lowering mixing temperature, lowering high-temperature viscosity of asphalt, and lowering other properties of asphalt, so as to reduce high-temperature viscosity and reduce aging. , the effect of increasing the softening point

Inactive Publication Date: 2012-04-11
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many recent studies have shown that although warm-mix asphalt modification technology can reduce the high-temperature viscosity of asphalt and reduce the mixing temperature, other properties of asphalt are also relatively reduced.

Method used

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  • Warm mix asphalt viscosity breaking agent

Examples

Experimental program
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Effect test

Embodiment 1

[0014] Taking the preparation of 100g of warm-mix asphalt viscosity reducer of the present invention as an example, it is made from the raw materials of the following mass proportions:

[0015] Octadecyl Acrylate-Styrene-Maleic Anhydride Copolymer 50g

[0016] Zeolite powder 50g

[0017] The above-mentioned zeolite powder has a fineness of 40-80 mesh and a calcium ion exchange capacity of ≥20 mg / g, and is provided by Xinyang Zhongyuan Perlite Thermal Insulation Material Factory.

[0018] The preparation method of above-mentioned warm-mix asphalt viscosity reducer is: 100g stearyl acrylate, 60g styrene, 60g maleic anhydride are added in the there-necked flask, mix well, add 2.2g benzoyl peroxide, pass into nitrogen 30 minutes, Stir, heat in a water bath to 80°C, react at a constant temperature for 6 hours, blow nitrogen until the product is cooled, precipitate with methanol, and dry under vacuum at 60°C for 6 hours to obtain a yellow solid octadecyl acrylate-styrene-maleic anh...

Embodiment 2

[0020] Taking the preparation of 100g of warm-mix asphalt viscosity reducer of the present invention as an example, it is made from the raw materials of the following mass proportions:

[0021] Octadecyl acrylate-styrene-maleic anhydride copolymer 66.67g

[0022] Zeolite powder 33.33g

[0023] Its preparation method is identical with embodiment 1.

Embodiment 3

[0025] Taking the preparation of 100g of warm-mix asphalt viscosity reducer of the present invention as an example, it is made from the raw materials of the following mass proportions:

[0026] Octadecyl Acrylate-Styrene-Maleic Anhydride Copolymer 25g

[0027] Zeolite powder 75g

[0028] Its preparation method is identical with embodiment 1.

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Abstract

A warm mix asphalt viscosity breaking agent is prepared by mixing an octadecyl acrylate-styrene-maleic anhydride copolymer with zeolite powder in a mass ratio of 1: 0.5-3. The warm mix asphalt viscosity breaking agent provided in the invention is capable of reducing the high temperature viscosity of asphalt, increasing the softening point of asphalt, reducing the ageing of an asphalt mixture and effectively improving the cold cracking and long-term fatigue properties of the asphalt material; and the warm mix asphalt is capable of saving the energy source for warm mixing of asphalt and reducing the mission of harmful gases.

Description

technical field [0001] The invention relates to road, bridge and tunnel pavement materials, in particular to a warm-mix asphalt viscosity reducer. Background technique [0002] At present, many countries are adopting warm-mix asphalt modification technology. Warm-mix asphalt modification technology uses specific technical solutions or additives to make the mixing and construction temperature (110-130°C) between hot-mix asphalt mixture (150-180°C) It is between cold mix (room temperature) asphalt mixture, and its performance is at or close to that of hot mix asphalt technology. The direct benefit of warm-mix asphalt modification technology is to reduce the fuel consumption of traditional hot-mix asphalt technology, reduce the smoke and odor around the mixing plant and paving site, and reduce its environmental pollution. Excellent construction ease and road performance. Therefore, the environment-friendly and resource-saving warm mix asphalt modification technology has recei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L33/08C08K3/34
CPCY02A30/30
Inventor 裴建中李彦伟徐霈刘勇石鑫张增平李利利
Owner CHANGAN UNIV
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