Compound asphalt mixture wet-mixing additive and preparation method thereof

An asphalt mixture and composite technology, which is applied in the field of road materials, can solve the problems of single type of warm mix additives, high price, and reduce the road performance of asphalt mixture, so as to improve the working environment of workers, improve road performance, and improve road performance. By the effect of performance enhancement

Inactive Publication Date: 2012-07-11
陕西长大博源公路养护科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The types of warm mix additives popularized and applied in China are relatively single, mainly imported products, and their prices are high, and there are some materials that reduce the road performance of asphalt mixture to varying degrees while achieving warm mix effects

Method used

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  • Compound asphalt mixture wet-mixing additive and preparation method thereof
  • Compound asphalt mixture wet-mixing additive and preparation method thereof
  • Compound asphalt mixture wet-mixing additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] According to the parts by weight of each component of Example 1 in Table 1, the warm mixing additive product is prepared, comprising the following steps:

[0043] (1) 40 parts of blocky microcrystalline wax are chopped into fragments below 2cm in particle size, and set aside;

[0044] (2) Add 15 parts of polyethylene wax, 20 parts of EVA wax and 20 parts of stearic acid in powder form to the ribbon mixer, and then add 5 parts of chlorinated paraffin after starting and mix evenly under the action of mechanical stirring; then add micro The crystal wax continues to stir and mix evenly to obtain a mixed dry material;

[0045] (3) Put the mixed dry material into the melting tank of the granulator, heat it at 120°C to 130°C and melt it, and then granulate it through a rotary belt type condensation device, the particle size is less than 5mm, cool and dry.

Embodiment 2

[0047] According to the parts by weight of each component of embodiment 2 in table 1, prepare warm mixing additive product, comprise the following steps:

[0048] (1) 30 parts of blocky microcrystalline wax are chopped into fragments below 2cm in particle size, and set aside;

[0049] (2) Add 20 parts of polyethylene wax, 20 parts of EVA wax and 20 parts of stearic acid into the ribbon mixer in powder form, and then add 10 parts of chlorinated paraffin after starting and mix evenly under the action of mechanical stirring; then add micro The crystal wax continues to stir and mix evenly to obtain a mixed dry material;

[0050] (3) Put the mixed dry material into the melting tank of the granulator, heat it at 120°C to 130°C and melt it, and then granulate it through a rotary belt type condensation device, the particle size is less than 5mm, cool and dry.

Embodiment 3

[0052] According to the parts by weight of each component of Example 3 in Table 1, the warm-mix additive product is prepared, comprising the following steps:

[0053] (1) 40 parts of blocky microcrystalline wax are chopped into fragments below 2cm in particle size, and set aside;

[0054] (2) Add 20 parts of polyethylene wax, 10 parts of EVA wax and 30 parts of stearic acid into the ribbon mixer and mix evenly under the action of mechanical stirring; dry ingredients;

[0055] (3) Put the mixed dry material into the melting tank of the granulator, heat it at 120°C to 130°C and melt it, and then granulate it through a rotary belt type condensation device, the particle size is less than 5mm, cool and dry.

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Abstract

The invention relates to the field of road materials, and discloses a compound asphalt mixture wet-mixing additive and a preparation method thereof. According to the compound asphalt mixture wet-mixing additive, production and construction temperatures of a hot-mix asphalt mixture can be reduced. The compound asphalt mixture wet-mixing additive is characterized by comprising the following components in parts by weight: 20-50 parts of microcrystalline wax, 20-50 parts of stearic acid, 10-20 parts of polyethylene wax, 5-20 parts of EVA (ethyl vinyl acetate) wax and 0-10 parts of plasticizer. The preparation method comprises the following steps of: uniformly mixing the polyethylene wax, the EVA wax, the stearic acid and the plasticizer under the mechanical stirring action, then adding the microcrystalline wax, continuously stirring and uniformly mixing to obtain a mixed dry material; and finally, adding the mixed dry material in a granulating machine melting furnace, heating at a temperature of 120-130 DEG C and melting, then granulating, cooling and drying. According to the compound asphalt mixture wet-mixing additive, the blending temperature of the asphalt mixture can be effectively lowered by about 30 DEG C, and better used road performance can be ensured.

Description

technical field [0001] The invention relates to the field of road materials, in particular to a composite asphalt mixture warm-mix additive and a preparation method thereof. The additive can reduce the production and construction temperature of the hot-mix asphalt mixture. Background technique [0002] The traditional hot-mix asphalt mixture (HMA) is a hot-mix hot-pavement material, which requires high temperature during mixing, paving and rolling. Therefore, in the process of production and construction, it not only consumes a lot of energy, but also Asphalt produces thermal aging, and also emits a large amount of exhaust gas and dust, which affects the quality of the surrounding environment and the health of construction workers. The harmful components of these gases are mainly CO, CO 2 , SO 2 And NOx category etc. Although cold-mix asphalt mixture has certain advantages in terms of environmental protection and energy consumption, it is generally only used for road main...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L91/06C08L23/06C08L23/08C08K5/09C04B26/26
Inventor 蔡乾东岳永辉贾晓放王安玲周俊秋张欣徐培华
Owner 陕西长大博源公路养护科技有限公司
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