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Rubber asphalt composition for improving rubber asphalt performance as well as preparation method and application of rubber asphalt composition

A technology of rubber asphalt and composition, applied in the field of rubber asphalt composition and its preparation for improving the properties of rubber asphalt

Inactive Publication Date: 2018-09-21
广州大象超薄路面技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Due to the limitation of material selection and other factors, the rubber asphalt mixture prepared by the above method has one or several defects in the high temperature performance of the rubber asphalt mixture, or in the adhesion performance, or in the pipeline pumping performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] Another aspect of the present invention provides the preparation method of the rubber asphalt composition, comprising: heating rubber powder, stearyl stearylamide, styrene-ethylene / butylene-styrene block copolymer, petroleum asphalt according to the formula Mixing, the resulting mixture is mixed with mineral aggregates under heat.

[0049] In the preparation method of the asphalt rubber composition provided by the present invention, those skilled in the art can select appropriate conditions to mix each component in the raw material formula, so as to obtain the asphalt rubber composition. For example, the temperature when the rubber asphalt component is heated and mixed can be 180-200°C, 185-195°C, or 185-190°C; , or 60-100 minutes; another example, the temperature when the rubber asphalt component and the mineral aggregate are heated and mixed can be 160-200°C, 170-190°C, or 170-180°C; another example, the mixture and the mineral aggregate are heated The mixing time ca...

Embodiment 1

[0062] Prepare the modified rubber asphalt mixture as follows:

[0063] 1) 15 parts by weight of tire rubber powder, 2 parts by weight of stearyl octadecylamide, and 2 parts by weight of styrene-ethylene / butylene-styrene block copolymer are added to 75 parts by weight of road petroleum asphalt , under the condition of 180-200 ℃, stirring and reacting for 120 minutes to make rubber asphalt, according to the standard method stipulated in JTJ052-2000, the standard of the Ministry of Communications of China, "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" JTJ052-2000 to test the viscosity of rubber asphalt at 177 ℃, The results are shown in Table 9;

[0064] 2) Heating 100 parts by weight of the stone in the mineral aggregate to 160-200° C., adding 6 parts by weight of the rubber asphalt obtained in step 1, and stirring evenly to obtain a finished composite modified rubber asphalt mixture.

[0065] The stone in the above step 2 meets the following grada...

Embodiment 2

[0076] Prepare the modified rubber asphalt mixture as follows:

[0077] 1) 25 parts by weight of tire rubber powder, 4 parts by weight of octadecyl stearylamide, and 2 parts by weight of styrene-ethylene / butylene-styrene block copolymer are added to 85 parts by weight of road petroleum asphalt , under the condition of 200°C, stirred and reacted for 45 minutes to make rubber asphalt, and tested the viscosity of rubber asphalt at 177°C, the results are shown in Table 9;

[0078] 2) Heating 100 parts by weight of stone in the mineral aggregate to 200° C., adding 15 parts by weight of the rubber asphalt obtained in step 1, and stirring evenly to obtain a finished composite modified rubber asphalt mixture.

[0079] The stone in the above step 2 meets the following gradation requirements, as shown in Table 3:

[0080] table 3

[0081] mesh size

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PUM

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Abstract

The invention relates to the field of road engineering, in particular to a rubber asphalt composition for improving rubber asphalt performance as well as a preparation method and application of the rubber asphalt composition. The invention provides the rubber asphalt composition, which is prepared from the following raw materials: a rubber asphalt component and mineral aggregate, wherein the rubber asphalt component is prepared from rubber powder, octadecyl stearamide, petroleum asphalt and a styrene-ethylene / butylene-styrene block copolymer. In the rubber asphalt composition provided by the invention, by introducing the styrene-ethylene / butylene-styrene block copolymer and octadecyl stearamide and enabling the styrene-ethylene / butylene-styrene block copolymer and octadecyl stearamide to be used in combination with other materials, the properties such as high-temperature performance, adhesion performance and pipeline pumping performance of a rubber asphalt mixture can be simultaneouslyimproved.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a rubber asphalt composition for improving the properties of rubber asphalt, a preparation method and application thereof. Background technique [0002] After the expressway has been used for several years, various diseases will appear, and there is a large market demand for resurfacing the expressway surface. At present, the better technology is to apply OGFC thin layer overlay to the expressway, OGFC thin layer overlay Usually refers to a thin-layer overlay with a thickness of less than 2 cm. Due to its large void ratio, it has high requirements on asphalt performance. Rubber asphalt is suitable for OGFC thin-layer overlay due to its good anti-aging performance. [0003] Rubber asphalt refers to the modified asphalt cementing material obtained by the reaction of tire rubber powder with a content of more than 15% under high temperature and sufficient mixing conditions and the swe...

Claims

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Application Information

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IPC IPC(8): C04B26/26E01C7/26
CPCC04B26/26C04B2111/0075E01C7/265C04B18/20C04B24/2688C04B24/124C04B14/02
Inventor 李本亮李大为黄卫东钟皓白颜川奇
Owner 广州大象超薄路面技术开发有限公司