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Modified asphalt composite particles and preparation thereof, and modified asphalt and application thereof

A technology of modified asphalt and composite particles, applied in the direction of climate sustainability, recycling technology, sustainable waste treatment, etc., can solve the problems of low temperature resistance performance attenuation of asphalt, temperature and shrinkage cracks of asphalt pavement, affecting the life of asphalt pavement, etc. Achieve excellent low temperature performance, improve dynamic modulus, and not easy to crack

Active Publication Date: 2022-02-08
河北交规院瑞志交通技术咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the low temperature resistance of asphalt will be greatly attenuated after adding rock asphalt, resulting in temperature shrinkage cracks in the asphalt pavement in low temperature environments, which will affect the life of the asphalt pavement

Method used

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  • Modified asphalt composite particles and preparation thereof, and modified asphalt and application thereof
  • Modified asphalt composite particles and preparation thereof, and modified asphalt and application thereof
  • Modified asphalt composite particles and preparation thereof, and modified asphalt and application thereof

Examples

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Effect test

preparation example 1

[0035] Solubilizing agents of the present composite application, prepared by the following method:

[0036] Table according Volume 1, aromatic oil, an epoxy resin, a maleic anhydride grafted polypropylene, and urethane-modified branched chain mixed alcohol ether ethoxylates, uniformly stirred, to obtain composite solubilizers.

preparation example 2-5

[0038] Preparation Example 2-5 solubilizing compound prepared in Preparation 1 and the kind of raw material are identical, except that the different contents of the aromatic oil, specifically shown in Table 1.

[0039] TABLE 1 Preparation of composite solubilizers Examples 1-5 dosage of the raw materials (unit: 10g)

[0040]

preparation example 6-10

[0042] Solubilizing compound prepared in Preparation Example 3 and the type of raw materials prepared in Examples 6-10 are identical, except that different epoxy resins dosage, particularly shown in Table 2.

[0043] Table 2 Compound solubilizer 6-10 Preparation of the raw materials Volume (Unit: 10g)

[0044]

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Abstract

The invention relates to the technical field of modified asphalt, and particularly discloses modified asphalt composite particles and preparation thereof, and modified asphalt and application thereof. The modified asphalt composite particles are prepared from the following raw materials in parts by weight: 20-40 parts of desulfurized waste tire rubber powder, 3-10 parts of rock asphalt, 5-10 parts of a composite solubilizer, 1-8 parts of a plasticizer, 1-6 parts of a composite stabilizer, 1-8 parts of polyphosphoric acid, 3-7 parts of polyphosphate, 2-5 parts of a silane coupling agent, 30-50 parts of petroleum asphalt and 2-10 parts of a tackifier. When the modified asphalt composite particles are added into modified asphalt, the modulus, the high-temperature performance and the water damage resistance of the modified asphalt can be improved, and meanwhile, relatively good low-temperature resistance is obtained. When the modified asphalt is applied to asphalt concrete, asphalt concrete with excellent high and low temperature resistance can be obtained.

Description

Technical field [0001] The present application relates to modified asphalt, and more particularly, it relates to modified asphalt composite grains and their preparation, and modified asphalt applications. Background technique [0002] Asphalt, cement is usually used as a raw material of asphalt concrete, with certain graded mineral aggregate formed after sufficient mixing of asphalt concrete, has better resistance to water damage, shock absorbing capability, noise and thermal cracking. [0003] In the related art, as the rock asphalt modifier was added to a bituminous composite material, using a modified asphalt rock asphalt can be improved high temperature performance of asphalt, resistance to water damage and modulus. However, a greater degree of attenuation of the low temperature performance of asphalt added after rock asphalt, resulting in cracks in the asphalt pavement temperature shrinkage at low temperature, affect the life of asphalt pavement. Inventive content [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L19/00C08L85/02C08L63/00C08L51/06C08L75/04C08L71/02C08L83/08C08L1/28C08K3/32
CPCC08L95/00C08L2201/08C08L2205/035C08L2205/025C08K2003/329C08L19/003C08L85/02C08L63/00C08L51/06C08L75/04C08L71/02C08L83/08C08L1/284C08K3/32Y02W30/91
Inventor 王联芳刘建奇王秉泽安东朝齐玉亮侯永生张帅梁亮吕军军高鸣张谦
Owner 河北交规院瑞志交通技术咨询有限公司
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