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Warm-mixing SMA (styrene maleic anhydride)-modified asphalt concrete modified particle and preparation method thereof

A technology for modifying asphalt and concrete, which is applied to building insulation materials, building components, and climate change adaptation. It can solve problems such as low construction efficiency, high energy consumption, and short storage time, and achieve enhanced rigidity and strength, avoiding time-consuming and troublesome, The effect of improving adhesion

Inactive Publication Date: 2015-05-06
ZHEJIANG HENGSHENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a warm-mix SMA modified asphalt concrete modification for the defects of existing SMA asphalt concrete technology, such as complex process, high energy consumption, high pollution, short storage time, low construction efficiency, and low technical performance. sex particles

Method used

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  • Warm-mixing SMA (styrene maleic anhydride)-modified asphalt concrete modified particle and preparation method thereof
  • Warm-mixing SMA (styrene maleic anhydride)-modified asphalt concrete modified particle and preparation method thereof
  • Warm-mixing SMA (styrene maleic anhydride)-modified asphalt concrete modified particle and preparation method thereof

Examples

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Embodiment 1

[0028] Embodiment 1 of a warm-mixed SMA modified asphalt concrete modified particle of the present invention comprises the following components, and each component is respectively according to mass percentage:

[0029]

[0030]

[0031] The modified particles are cylindrical particles with a particle diameter of 8-13 mm and a particle length of 15-30 mm. The size design of the modified particles can enable them to melt rapidly and participate in the reaction during the asphalt modification process.

[0032] The preparation method of the warm mixed SMA modified asphalt concrete modified particles comprises the following steps in sequence:

[0033] Step 1. Mix diatomaceous earth, warm mixing agent, polyester fiber, paraffin wax and anti-stripping agent in a high-speed mixer, then add rubber powder and ethylene-vinyl acetate copolymer, and continue mixing until uniform to obtain a premixed thing;

[0034] Step 2. Put the premix obtained in Step 1 into the silo of a 75-typ...

Embodiment 2

[0036] A warm-mix SMA modified asphalt concrete modified particle embodiment 2 of the present invention includes the following components, and each component is respectively according to mass percentage:

[0037]

[0038]

[0039] The preparation method of the warm mixed SMA modified asphalt concrete modified particles is the same as that of Example 1.

Embodiment 3

[0040] Embodiment 3 of a warm-mixed SMA modified asphalt concrete modified particle of the present invention comprises the following components, and each component is respectively according to mass percentage:

[0041]

[0042] The preparation method of the warm mixed SMA modified asphalt concrete modified particles is the same as that of Example 1.

[0043] The warm-mixed SMA modified asphalt concrete modified particles of the present invention and the preparation method thereof have been put into practical application, and good results have been obtained in practical application, and the efficiency of on-site construction is improved by 30% compared with that of traditional SBS asphalt modification technology. 50%, and there is no need to add various single-performance modifiers to modify the base asphalt and aggregates during the construction process, and it also avoids various dust pollution during the modification process and the modification process is complex and time...

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Abstract

The invention discloses a warm-mixing SMA (styrene maleic anhydride)-modified asphalt concrete modified particle. The warm-mixing SMA-modified asphalt concrete modified particle comprises the following components in percentage by mass: 30-40% of rubber powder, 15-25% of diatomite, 8-15% of an ethylene-vinyl acetate copolymer, 5-10% of a warm-mixing agent, 5-10% of polyester fibers, 5-8% of paraffin and 2-3.5% of an anti-stripping agent, based on 100% in total. The invention further discloses a preparation method of the modified particle. According to the warm-mixing SMA-modified asphalt concrete modified particle disclosed by the invention, additives with different modifying functions are physically co-mixed and chemically modified and mixed to prepare the modified particle which is used for paving high-grade asphalt pavement, so that a conventional SBS (styrene butadiene styrene) asphalt modifying technology production process is replaced, the problems in transportation, storage and the like of the SBS modified asphalt are solved, the investment, the pollution and the energy consumption are reduced, the comprehensive road performances of the asphalt pavement are improved, the service life of the pavement is prolonged, the road construction cost and the maintenance cost are reduced, and the economic value and the social benefits are extremely high.

Description

technical field [0001] The invention belongs to the technical field of asphalt road construction, relates to a warm-mix SMA modified asphalt concrete modified particle, and also relates to a preparation method of the warm-mix SMA modified asphalt concrete modified particle. Background technique [0002] The development of traditional SMA modified asphalt concrete technology began in Germany in the 1970s and was widely used in the construction of high-grade asphalt pavement. my country introduced this technology in the late 1990s, and it has been widely used at the same time. Its process and technical characteristics are that the base asphalt is first mixed with special equipment, added with SBS rubber, sulfur, stabilizer, anti-stripping agent and other additives, and passed through high-speed shearing. Cut chemical modification to produce SBS modified asphalt, and then transport SBS modified asphalt to the asphalt mixing station through a special insulated vehicle, mix with d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L21/00C08L23/08C08L67/00C08L91/06C08L35/06C08K3/34C04B26/26
CPCY02A30/30
Inventor 冯陈亮
Owner ZHEJIANG HENGSHENG TECH
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