Warm mix agent for warm mix asphalt and its application method

Abstract

The invention relates to a warm mix agent used for warm mix asphalt, and an application method of the warm mix agent, and belongs to the technical field of asphalt modification. The warm mix agent used for warm mix asphalt comprises, by mass, 1-5 parts of fatty acids, 0.5-2.5 parts of amide and 1-5 parts of rubber powder; and above three components have synergistic effects. The warm mix agent used for warm mix asphalt can effectively reduce the mixing, lying and rolling temperatures of asphalt, solves the problems of environment pollution, large energy consumption and asphalt ageing decline, has a substantial viscosity reduction effect, also solves the problem of poor low-temperature ductility of warm mix asphalt in the prior art, and also improves the low temperature performances of the asphalt while reducing the viscosity; and the application method is simple, is easy to implement, and is convenient to enforce.

Description

technical field

[0001] The invention relates to a warm mix agent for warm mix asphalt and an application method thereof, belonging to the technical field of asphalt modification. Background technique

[0002] The traditional asphalt pavement construction method is HAM (Hot Mixture Asphalt), which will emit some visible or invisible pollutants in the process of mixing, transportation and construction, causing environmental problems such as greenhouse effect, and harming human life. Health hazard. In order to reduce energy consumption and exhaust emissions, people began to develop energy-saving and environment-friendly warm mix asphalt mixture WMA (Warm Mixture Asphalt). At present, the warm mix technology used in the preparation of warm mix asphalt mixture is mainly divided into the following three types:

[0003] (1) Organic viscosity-reducing warm mixing technology, using an organic viscosity-reducing agent to reduce the viscosity of hot asphalt mixing, and the organic vi...

Examples

Embodiment 1

[0028] The warm mix agent for warm mix asphalt consists of the following raw materials in parts by mass:

[0029] 1 part of stearic acid, 1 part of ethylene bis stearamide and 1.5 parts of styrene-butadiene rubber powder.

[0030] The application method of the warm mix agent for warm mix asphalt:

[0031] Heat 70# heavy traffic asphalt to 130°C, add 3wt.% of the above-mentioned warm mixing agent for 70# heavy traffic asphalt, and stir at a constant temperature of 160°C for 20 minutes.

Embodiment 2

[0033] The warm mix agent for warm mix asphalt consists of the following raw materials in parts by mass:

[0034] 1 part of palmitic acid, 2 parts of ethylene bisoleic acid amide and 1 part of styrene-butadiene rubber powder.

[0035] The application method of the warm mix agent for warm mix asphalt:

[0036] Heat 70# heavy-duty asphalt to 135°C, add 70# heavy-duty asphalt with an amount of 1wt.% of the above-mentioned warm mix agent, and stir at a constant temperature of 150°C for 15 minutes.

Embodiment 3

[0038] The warm mix agent for warm mix asphalt consists of the following raw materials in parts by mass:

[0039] 3 parts of stearic acid, 0.5 parts of ethylene bis stearamide and 2 parts of styrene-butadiene rubber powder.

[0040] The application method of the warm mix agent for warm mix asphalt:

[0041] Heat 70# heavy-duty asphalt to 138°C, add 70# heavy-duty asphalt with an amount of 1wt.% of the above-mentioned warm mix agent, and stir at a constant temperature of 155°C for 20 minutes.

technical field

[0001] The invention relates to a warm mix agent for warm mix asphalt and an application method thereof, belonging to the technical field of asphalt modification. Background technique

[0002] The traditional asphalt pavement construction method is HAM (Hot Mixture Asphalt), which will emit some visible or invisible pollutants in the process of mixing, transportation and construction, causing environmental problems such as greenhouse effect, and harming human life. Health hazard. In order to reduce energy consumption and exhaust emissions, people began to develop energy-saving and environment-friendly warm mix asphalt mixture WMA (Warm Mixture Asphalt). At present, the warm mix technology used in the preparation of warm mix asphalt mixture is mainly divided into the following three types:

[0003] (1) Organic viscosity-reducing warm mixing technology, using an organic viscosity-reducing agent to reduce the viscosity of hot asphalt mixing, and the organic vi...

Examples

Embodiment 1

[0028] The warm mix agent for warm mix asphalt consists of the following raw materials in parts by mass:

[0029] 1 part of stearic acid, 1 part of ethylene bis stearamide and 1.5 parts of styrene-butadiene rubber powder.

[0030] The application method of the warm mix agent for warm mix asphalt:

[0031] Heat 70# heavy traffic asphalt to 130°C, add 3wt.% of the above-mentioned warm mixing agent for 70# heavy traffic asphalt, and stir at a constant temperature of 160°C for 20 minutes.

Embodiment 2

[0033] The warm mix agent for warm mix asphalt consists of the following raw materials in parts by mass:

[0034] 1 part of palmitic acid, 2 parts of ethylene bisoleic acid amide and 1 part of styrene-butadiene rubber powder.

[0035] The application method of the warm mix agent for warm mix asphalt:

[0036] Heat 70# heavy-duty asphalt to 135°C, add 70# heavy-duty asphalt with an amount of 1wt.% of the above-mentioned warm mix agent, and stir at a constant temperature of 150°C for 15 minutes.

Embodiment 3

[0038] The warm mix agent for warm mix asphalt consists of the following raw materials in parts by mass:

[0039] 3 parts of stearic acid, 0.5 parts of ethylene bis stearamide and 2 parts of styrene-butadiene rubber powder.

[0040] The application method of the warm mix agent for warm mix asphalt:

[0041] Heat 70# heavy-duty asphalt to 138°C, add 70# heavy-duty asphalt with an amount of 1wt.% of the above-mentioned warm mix agent, and stir at a constant temperature of 155°C for 20 minutes.

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