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Anti-rutting agent and asphalt mixture containing the anti-rutting agent

A technology of asphalt mixture and anti-rutting agent, which is applied in the direction of building insulation materials, building components, buildings, etc., can solve the problems of poor low-temperature performance of the mixture, and achieve good low-temperature cracking performance, stable storage, and low smoke pollution Effect

Active Publication Date: 2017-03-29
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Relevant studies have also shown that the direct coal liquefaction residue can significantly enhance the high temperature performance and water damage resistance of asphalt mixture, but it will make the low temperature performance of the mixture worse

Method used

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  • Anti-rutting agent and asphalt mixture containing the anti-rutting agent
  • Anti-rutting agent and asphalt mixture containing the anti-rutting agent
  • Anti-rutting agent and asphalt mixture containing the anti-rutting agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Mix 4000g of POE, 2000g of coal direct liquefaction residue, 480g of rubber oil, 480g of coal tar pitch, and 60g of color masterbatch in a rubber internal mixer (Nanjing Kaichi Machinery Co., Ltd.) at 90°C for 10 minutes, and then use a twin-screw extruder The extruder (Zhangjiagang Chuangjia Machinery Co., Ltd., SJ series) is extruded at 120°C, and then granulated by an air-cooled die surface cutting equipment (Nanjing Guangda Rubber and Plastic Machinery Factory) to obtain an anti-rutting agent.

[0046] The particle sizes obtained after granulation are all less than 4mm, and the melt index is 2.5g / 10min (190°C, 2.16kg).

Embodiment 2

[0048]Mix POE 3200g, coal direct liquefaction residue 2000g, rubber oil 480g, zinc stearate 480g, Buton rock asphalt 480g, color masterbatch 60g in a rubber internal mixer (Nanjing Kaichi Machinery Co., Ltd.) at 90°C Refining for 10 minutes, using a single-screw extruder (Zhangjiagang Chuangjia Machinery Co., Ltd., SJ series) to extrude at 120 ° C, and then granulating through the air-cooled die surface cutting equipment (Nanjing Guangda Rubber and Plastic Machinery Factory), Get the anti-rutting agent BH-2.

[0049] The particle sizes obtained after granulation are all less than 4mm, and the melt index is 8.0g / 10min (190°C, 2.16kg).

Embodiment 3

[0051] Mix 2000g of POE, 2000g of coal direct liquefaction residue, 480g of rubber oil, 480g of zinc stearate, and 480g of coal tar pitch in a rubber internal mixer (Nanjing Kaichi Machinery Co., Ltd.) at 90°C for 10 minutes, using a single screw The extruder (Zhangjiagang Chuangjia Machinery Co., Ltd., SJ series) was extruded at 120°C, and then granulated by the air-cooled die surface cutting equipment (Nanjing Guangda Rubber and Plastic Machinery Factory) to obtain the anti-rutting agent BH-3 .

[0052] The particle sizes obtained after granulation are all less than 4mm, and the melt index is 6.5g / 10min (190°C, 2.16kg).

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Abstract

The invention provides an asphalt mixture anti-rut agent which comprises direct coal liquefaction residues, polyolefin elastomer and additives, wherein the weight ratio of the direct coal liquefaction residues to the polyolefin elastomer is 1:(1-4); the additives account for 5-20% of the sum of the weight of the direct coal liquefaction residues and the polyolefin elastomer. The asphalt mixture anti-rut agent provided by the invention is outstanding in high-temperature resistance, good in durability and low-temperature property and can be used in the surface layer of a road so as to improve the anti-rut property of a pavement, so that the service life and repairing period of the pavement are prolonged.

Description

technical field [0001] The invention belongs to the field of road engineering, and in particular relates to an asphalt mixture additive containing coal direct liquefaction residue and polyolefin elastomer, and an asphalt mixture containing the additive. Background technique [0002] Along with the rapid development of the country, roads, especially expressways, bear more and more cargo carrying capacity. At the same time, road surface rutting is becoming more and more serious. 80% of the asphalt pavement maintenance in our country is related to rutting disease, and the period of major and medium repair of the pavement is only 6-8 years, and the loss of manpower and material resources is huge. The key technology of the long-life pavement that the current research and development field pays attention to is that the load-bearing layer of the pavement should use high modulus, anti-rutting asphalt material. [0003] At present, the anti-rutting agent products successfully used i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L95/00C08L91/00C08K5/098C08J3/22C04B26/26
CPCC04B24/26C04B26/26C08J3/223C08J2323/08C08L23/0815C08L2205/03C08L2310/00C08L2555/86C08L95/00C08L91/00C08K5/098
Inventor 季节曹东伟张海燕
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE