Multifunctional modified asphalt and preparation method thereof

A modified asphalt, multi-functional technology, applied in building components, building insulation materials, construction and other directions, can solve the problems of high equipment requirements, complex production process, increased costs, etc., to achieve strong coating ability, high softening point, saving cost effect

Inactive Publication Date: 2020-06-30
辽宁省交通科学研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some materials and technologies that appear on the market at this stage tend to focus on one thing and lose another. For example, low temperature performance is ignored in order to reflect high temperature performance, high temperature viscosity is ignored in order to increase dynamic viscosity, and the cost is forced to greatly increase in order to reflect the excellent performance of materials.
In addition, the production process of high-viscosity modified asphalt and high-viscosity and high-elasticity modified asphalt is relatively complicated at this stage, and the requirements for equipment are also very high

Method used

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  • Multifunctional modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A multi-functional modified asphalt, composed of 15% modified materials, 2% SBS, 1% SBR, 5% modified tackifier, 2% polymer surfactant, 10% APAO, 10% The filler and the balance are base asphalt, which are uniformly mixed.

[0037] The preparation method of the above-mentioned multifunctional modified asphalt, the specific operation steps are:

[0038] (1) Weigh 15% of modified material, 2% of SBS, 1% of SBR, 5% of modified tackifier, 2% of polymer surfactant, 10% of APAO, 10% of filler, the balance is base asphalt;

[0039] (2) Preheat the base asphalt taken in proportion to 120°C;

[0040] (3) Add the modified material in proportion to the preheated base asphalt and stir until uniform, and keep the temperature at 120°C;

[0041] (4) Raise the temperature to 170°C, add SBS, SBR, modified viscosifier, polymer surfactant, APAO and fillers to the above mixture in proportion, and shear at a constant temperature for 45 minutes to obtain a multifunctional modification asph...

Embodiment 2

[0044] A multi-functional modified asphalt, composed of 30% modified materials, 3% SBS, 2% SBR, 10% modified tackifier, 5% polymer surfactant, 15% APAO, 15% The filler and the balance are base asphalt, which are uniformly mixed.

[0045] The preparation method of the above-mentioned multifunctional modified asphalt, the specific operation steps are:

[0046] (1) Weigh 30% of modified material, 3% of SBS, 2% of SBR, 10% of modified tackifier, 5% of polymer surfactant, 15% of APAO, 15% of filler, the balance is base asphalt;

[0047] (2) Preheat the base asphalt taken in proportion to 140°C;

[0048] (3) Add the modified material in proportion to the preheated base asphalt and stir until uniform, and keep the temperature at 140°C;

[0049] (4) Raise the temperature to 180°C, add SBS, SBR, modified viscosifier, polymer surfactant, APAO and fillers to the above mixture in proportion, and shear at constant temperature for 50 minutes to obtain multifunctional modification asphal...

Embodiment 3

[0052] A multi-functional modified asphalt, composed of 35% modified materials, 3% SBS, 3% SBR, 12% modified tackifier, 7% polymer surfactant, 16% APAO, 20% The filler and the balance are base asphalt, which are uniformly mixed.

[0053] The preparation method of the above-mentioned multifunctional modified asphalt, the specific operation steps are:

[0054] (1) Weigh 35% of modified material, 3% of SBS, 3% of SBR, 12% of modified tackifier, 7% of polymer surfactant, 16% of APAO, 20% of filler, the balance is base asphalt;

[0055] (2) Preheat the base asphalt taken in proportion to 110°C;

[0056](3) Add the modified material in proportion to the preheated base asphalt and stir until uniform, and keep the temperature at 110°C;

[0057] (4) Raise the temperature to 160°C, add SBS, SBR, modified viscosifier, polymer surfactant, APAO and fillers to the above mixture in proportion, and shear at constant temperature for 30 minutes to obtain multifunctional modification asphalt...

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Abstract

The invention discloses multifunctional modified asphalt and a preparation method thereof, and belongs to the technical field of road engineering materials. According to the multifunctional modified asphalt prepared by the method disclosed by the invention, the dynamic viscosity at 60 DEG C is greater than 20000 Pa*s, the adhesion with stones at high temperature is strong, and the mixing at 130 DEG C can be achieved. The multifunctional modified asphalt has the advantages of high softening point, high ductility, high elastic recovery capacity, high toughness, aging resistance and the like, andhas the excellent properties that the elastic recovery rate is higher than 95% and the like. According to the method, only a shearing process is needed, and relatively high-viscosity, high-viscosityand high-elasticity modified asphalt needs complex processes such as development and maintenance, so that the purpose of saving the cost is achieved, the production is simple, and manpower idle work and equipment loss are greatly reduced. The multifunctional modified asphalt can be applied to laying of drainage pavements, bridge waterproof bonding stress absorption layers, fine surfacing, ultrathin wearing layers, airport pavements and the like.

Description

technical field [0001] The invention belongs to the technical field of road engineering materials, and in particular relates to a multifunctional modified asphalt and a preparation method thereof. Background technique [0002] At present, most of the roads under construction and entrusted construction are heavy-duty traffic roads. Affected by many unfavorable factors such as heavy-duty vehicles and low-speed vehicles, rutting diseases appear in large numbers, especially on uphill sections with large longitudinal slopes, which have seriously affected driving safety. There are many related technologies and products on the market, such as: high modulus asphalt, high viscosity modified asphalt, high viscosity and high elasticity modified asphalt, new modified asphalt, etc. Some materials and technologies that appear on the market at this stage tend to focus on one thing and lose another. For example, low temperature performance is ignored in order to reflect high temperature per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/00C08L53/02C08L9/06C08L93/04C08L23/12C08K5/09C08K7/08
CPCC08L95/00C08L2201/08C08L2205/035C08L91/00C08L53/02C08L9/06C08L93/04C08L23/12C08K5/09C08K7/08
Inventor 金塬上孙培高爽任俊达吴耀东陈思王莹朱天明张茁峰邱百万黄硕磊
Owner 辽宁省交通科学研究院有限责任公司
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