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Compound for stress absorbing layer of rubber asphalt and preparation method and application thereof

A technology of stress absorbing layer and rubber asphalt, applied in the field of mixture for rubber asphalt stress absorbing layer, can solve the problems of poor effect of preventing and controlling reflection cracks, high cost, difficult construction and the like

Active Publication Date: 2010-12-15
沧州市市政工程股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0040] The above schemes either have the disadvantage of high cost, or the disadvantage of difficult construction, or the disadvantage of poor prevention and control of reflection cracks. This can develop a new stress-absorbing layer solution: rubber asphalt mixture stress-absorbing layer

Method used

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  • Compound for stress absorbing layer of rubber asphalt and preparation method and application thereof
  • Compound for stress absorbing layer of rubber asphalt and preparation method and application thereof
  • Compound for stress absorbing layer of rubber asphalt and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] 17 parts by weight of radial tire rubber powder, 2 parts by weight of rubber processing oil (produced by Taiwan Zhongyou Co., Ltd., trade name: Guoguang brand rubber softening oil, 40 ℃ viscosity 3.1Pa.S, flash point: 253 ℃, aromatic component Content: 74.7wt%, 15 DEG C density: 0.94g / cm3.), the montmorillonite of 0.3 weight part joins in the road asphalt of 80.7 weight parts (Donghai No. 70 petroleum asphalt, hereinafter the same), at 180-200 DEG C Under the condition of mixing and reacting for 120 minutes, rubber asphalt was made, and the viscosity of rubber asphalt was tested at 177°C according to the standard method stipulated in JTJ052-2000, the standard of the Ministry of Communications of China. The results are shown in Table 1;

Embodiment 2

[0086] Add 19 parts by weight of radial tire rubber powder, 5.9 parts by weight of rubber treatment oil, and 0.1 part by weight of montmorillonite to 75 parts by weight of road petroleum asphalt, and stir and react for 45 minutes at 200 ° C to prepare Rubber asphalt, test the viscosity of rubber asphalt at 177°C, the results are shown in Table 1;

Embodiment 3

[0090] Add 18.5 parts by weight of radial tire rubber powder, 3 parts by weight of rubber treatment oil, and 0.2 parts by weight of montmorillonite to 78.3 parts by weight of road petroleum asphalt, and stir and react for 120 minutes at 180 ° C to prepare Rubber asphalt, test the viscosity of rubber asphalt at 177°C, the results are shown in Table 1;

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Abstract

The invention discloses a compound for the stress absorbing layer of rubber asphalt and a preparation method and application thereof. In the invention, the method for preparing the compound for the stress absorbing layer of the rubber asphalt comprises the following steps: adding 17-20 parts of radial tyre rubber powder by weight, 2-6 parts of rubber processing oil by weight and 0.1-0.3 part of montmorillonite by weight into 75-80 parts of road petroleum asphalt, stirring and reacting for 45-120min at the temperature of 180-200 DEG C to obtain the rubber asphalt; heating 100 parts of mineral aggregate by weight to 160-200 DEG C, adding 9-11 parts of rubber asphalt by weight, and evenly stirring to obtain the finished product of the compound for the stress absorbing layer of the rubber asphalt. The compound for the stress absorbing layer of the rubber asphalt, which is prepared according to the method of the invention, is specially used as an intermediate layer when asphalt pavement is coated on the cement pavement, thus playing the role of preventing reflection cracks.

Description

technical field [0001] The invention relates to a mixture for a rubber asphalt stress absorption layer, a preparation method and application thereof. Background technique [0002] At present, semi-rigid materials account for more than 95% of the pavement base materials of various grades of highways in my country, and more than 90% of the completed expressways use semi-rigid base asphalt pavement. In the future construction of the main national highway, the semi-rigid base asphalt concrete pavement will still be the main structural form. There are dry shrinkage and temperature shrinkage cracks in the base of the semi-rigid pavement. The interface is prone to shear stress concentration and bending-tensile stress, and reflection cracks will appear on the asphalt pavement under repeated action. In addition, there are a large number of rigid pavements in my country. After the asphalt surface layer is overlaid, reflection cracks are also the main disease. [0003] In order to solv...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B18/22
CPCY02W30/91
Inventor 李彦伟赵永祯石鑫
Owner 沧州市市政工程股份有限公司
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