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High temperature-resisting track-resisting bituminous pavement modified material, preparation method thereof and bituminous product

A technology for asphalt pavement and modified materials, which is applied in the field of new materials in the fields of bridges, roads and tunnels. It can solve the problems of water resistance, stable construction period, short efficiency, complicated SBS asphalt modification, and high pollution, so as to reduce maintenance costs and service life. Long, tough effect

Inactive Publication Date: 2011-05-25
彭麒桦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve technical problems such as high-temperature anti-rutting performance, water-resistant stability, short construction period and efficiency of asphalt pavement in hot and rainy regions in North China and South China; at the same time, it completely replaces the complicated and high-energy SBS asphalt modification. Energy-saving, high-pollution production process, with the advantages of environmental protection, energy saving, high economic efficiency, etc.

Method used

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  • High temperature-resisting track-resisting bituminous pavement modified material, preparation method thereof and bituminous product
  • High temperature-resisting track-resisting bituminous pavement modified material, preparation method thereof and bituminous product
  • High temperature-resisting track-resisting bituminous pavement modified material, preparation method thereof and bituminous product

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preparation example Construction

[0073] Please refer to Figure 3a and Figure 3b , the side view and the front view of the preparation equipment of the high-temperature-resistant and anti-rutting asphalt pavement modified material of the present invention, respectively. in Figure 3a The sides of the horizontal mixer 1 , conveyor 2 , single screw machine hopper 3 , single screw machine 4 , twin screw machine hopper 5 and twin screw machine 6 are shown in . and Figure 3b Only the fronts of the horizontal mixer 1 , the conveyor 2 , the single-screw machine hopper 3 and the single-screw machine 4 are shown in . The present invention also specifically provides a preparation method for the above-mentioned high temperature-resistant and rutting-resistant asphalt pavement modified material, including:

[0074] A mixing step, adding NPCC-701 nano-calcium carbonate, SMN resin, diatomaceous earth, LLDPE, cerium oxide nano-stabilizer in the horizontal mixer 1 to mix and stir until a semi-finished asphalt material ...

Embodiment 1

[0094] In one mixing step, add 11 parts of NPCC-701 modified nano-calcium carbonate, 5 parts of SMN resin, 15 parts of diatomaceous earth, 5 parts of LLDPE, and 0.5 part of cerium oxide nano-stabilizer in a horizontal mixer for mixing and stirring until uniform asphalt The materials are semi-finished products; the temperature of primary mixing is room temperature, and the time is 5 minutes.

[0095] In the secondary mixing step, the asphalt material semi-finished product is placed into a single-screw machine through a conveying device, and 10 parts of SMN resin and 8 parts of HDPE are added for mixing and stirring to obtain a mixed extrusion raw material; the temperature of the secondary mixing step is 45 ° C, and the time is for 3 minutes.

[0096] Three mixing steps, introducing the mixed extrusion raw materials into a twin-screw extruder, adding 0.5 parts of JC-GJ301 reinforcing agent, 15 parts of LLDPE and 5 parts of EVA for mixing and stirring, and extruding to obtain the...

Embodiment 2

[0104] In one mixing step, add 20 parts of NPCC-701 modified nano-calcium carbonate, 8 parts of SMN resin, 25 parts of diatomaceous earth, 8 parts of LLDPE, and 0.3 part of cerium oxide nano-stabilizer in a horizontal mixer to mix and stir until uniform asphalt The materials are semi-finished products; the temperature of primary mixing is room temperature, and the time is 5 minutes.

[0105]In the second mixing step, the asphalt material semi-finished product is put into the single screw machine through the conveying device, and 17 parts of SMN resin and 10 parts of HDPE are added for mixing and stirring to obtain the mixed extrusion raw material; the temperature of the second mixing step is 40°C, and the time for 3 minutes.

[0106] Three mixing steps, introducing the mixed extrusion raw materials into a twin-screw extruder, adding 0.8 parts of JC-GJ301 reinforcing agent, 22 parts of LLDPE and 8 parts of EVA for mixing and stirring, and extruding to obtain the high temperatur...

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Abstract

The invention relates to a high temperature-resisting track-resisting bituminous pavement modified material, a preparation method thereof and a bituminous product. The modified material is prepared from the following raw materials in parts by weight: 20-30 parts of linear low density polyethylene (LLDPE), 8-10 parts of high-density polyethylene (HDPE), 15-25 parts of St-MAH-NPMI (SMN) resin, 15-25 parts of infusorial earth, 5-8 parts of ethylene-vinlacetate copolymer (EVA), 0.5-0.8 parts of JC-CJ301 nano reinforcing agents, 11-20 parts of NPCC-701 nano calclum carbonate and 0.2-0.5 parts of cerium oxide nano stabilizing agent. The high temperature-resisting track-resisting bituminous pavement modified material provided by the invention is a proprietary technology formula for designing the bituminous pavement under high-temperature rainy climate in the north China and the south China, and the track-resisting property and water stability of the high-temperature bituminous pavement are ensured by using the modified material. The identification data from the Testing Center of the Department of Transportation and multiple identification organizations indicates that by adopting the technology provided by the invention, the track-resisting property of the bituminous pavement exceeds above 2 times more than the national standard requirements, the water stability of the bituminous pavement is above 8% of the national standard requirements; and electricity and diesel are greatly saved for China for each year.

Description

technical field [0001] The invention relates to new materials in the field of roads, bridges and tunnels, and more specifically relates to a modified material for high temperature resistant and anti-rutting asphalt pavement, a preparation method and an asphalt product. Background technique [0002] Asphalt is a brown-black organic gelatinous substance, the main components are asphaltene and resin, followed by high-boiling mineral oil and a small amount of oxygen, sulfur and chlorine compounds. Its viscosity varies widely at room temperature, from hard elastic to soft "solid". [0003] However, the current asphalt modification technology is not ideal in terms of high temperature resistance and other comprehensive road performance. Since the annual accumulated temperature in North China and South China is between 4500-8000 °C, the summer temperature is quite high (housing average temperature> = 25 ℃ at least 6 months, that is, 30 days), rainy and humid, the average tempera...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L31/04C08K3/34C08K3/26C08K3/22C04B26/26E01C7/18
CPCC08L2555/50C08L2555/86C04B26/26C08L95/00C04B40/0042C08L23/0815
Inventor 彭麒桦
Owner 彭麒桦
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