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Preparation method of composite modified rubber asphalt with excellent anti-stripping performance

A compound modified asphalt and compound modified technology, which is applied in building components, building insulation materials, buildings, etc., can solve problems such as insufficient adhesion, and achieve the effects of improving construction ease, reducing dosage, and reducing asphalt viscosity

Inactive Publication Date: 2018-03-20
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of composite modified rubber asphalt with excellent anti-stripping performance, to solve the problem of insufficient adhesion of existing road rubber asphalt or its composite modified asphalt, and the modified Compatibility of additives in asphalt

Method used

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  • Preparation method of composite modified rubber asphalt with excellent anti-stripping performance
  • Preparation method of composite modified rubber asphalt with excellent anti-stripping performance
  • Preparation method of composite modified rubber asphalt with excellent anti-stripping performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Prepare modified rubber asphalt as follows:

[0045]Put 18 parts by weight of tire rubber powder, 73.7 parts by weight of road petroleum asphalt, under the condition of 210-220 ° C, stir and react for 45 minutes. Then 3 parts by weight of hydroxypropyl acrylate, 3 parts by weight of ethyl dimethacrylate Glycol ester, 0.3 parts by weight of elemental sulfur as a crosslinking agent, at a temperature of about 200 ° C, first use a high-speed shearing machine to cut at a speed of 3500 rpm for 30-45 minutes, and then pass through the rest of the temperature Set aside for 30 minutes, then add 2 parts by weight of diisopropyl phthalate, and use a mixer to stir at a constant speed for 180 minutes under the condition of 180-200 ° C to complete the preparation of modified rubber asphalt. Then it was subjected to part of the asphalt test and Hamburg immersion rutting test in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering". The test results are shown ...

Embodiment 2

[0047] Prepare modified rubber asphalt as follows:

[0048] Mix 19 parts by weight of tire rubber powder and 73.7 parts by weight of road petroleum asphalt under the condition of 210-220 ° C for 45 minutes. Then 2 parts by weight of hydroxypropyl acrylate, 3 parts by weight of ethyl dimethacrylate Glycol ester, 0.3 parts by weight of elemental sulfur as a crosslinking agent, at a temperature of about 200 ° C, first use a high-speed shearing machine to cut for 30 minutes at a speed of 3500 rpm, and then add 2 parts by weight of ophthalmic Diisopropyl phthalate, under the condition of 180-200 ℃, use a mixer to stir at a constant speed for 180min to prepare the modified rubber asphalt. Then it was subjected to part of the asphalt test and Hamburg immersion rutting test in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering". The test results are shown in Table 2.

Embodiment 3

[0050] Prepare modified rubber asphalt as follows:

[0051] Put 20 parts by weight of tire rubber powder, 71.7 parts by weight of road petroleum asphalt, under the condition of 210-220 ° C, stir and react for 45 minutes. Then 2 parts by weight of hydroxypropyl acrylate, 4 parts by weight of ethylene dimethacrylate Glycol ester, 0.3 parts by weight of elemental sulfur as a crosslinking agent, at a temperature of about 200 ° C, first use a high-speed shearing machine to cut for 30 minutes at a speed of 3500 rpm, and then add 2 parts by weight of ophthalmic Diisopropyl phthalate, under the condition of 180-200 ℃, use a mixer to stir at a constant speed for 180min to prepare the modified rubber asphalt. Then it was subjected to part of the asphalt test and Hamburg immersion rutting test in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering". The test results are shown in Table 2.

[0052] In the comparative example, an example of compound modification ...

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Abstract

The invention discloses a preparation method of composite modified rubber asphalt with excellent anti-stripping performance. The preparation method comprises the following steps: stirring 15-25 partsby weight of tire rubber powder and 65-75 parts by weight of pavement petroleum asphalt at the temperature of 190-220 DEG C, then adding 2-4 parts by weight of hydroxypropyl acrylate, 2-4 parts by weight of glycol dimethacrylate and 0.3 part by weight of elemental sulfur as a crosslinking agent, firstly shearing by adopting a high-speed shearing machine at the temperature of 190-210 DEG C, so thata composite modified asphalt mixture is obtained, maintaining lingering warmth, standing for 30 minutes and carrying out development infiltration, adding 1-2 parts by weight of diisopropyl phthalate,and then stirring at a constant speed by adopting a stirring machine at the temperature of 180-200 DEG C, so that the composite modified rubber asphalt is prepared. The preparation method disclosed by the invention has the advantages that the obtained modified rubber asphalt can keep good high temperature performance, and anti-stripping performance and adhesion of common rubber asphalt are improved.

Description

technical field [0001] The invention relates to a preparation method of composite modified rubber asphalt with excellent anti-stripping performance, aiming at the modified rubber asphalt processed and produced on-site during the construction of asphalt pavement in highway engineering, which can ensure that other main road performance technical indicators of the material are not reduced Or under the condition of not significantly reducing, it can significantly improve its anti-stripping performance. Background technique [0002] With the continuous development of my country's road engineering construction and the increase of road use time, various road surface damages are also constantly occurring. Due to the continuous increase of traffic axle loads, traditional base asphalt has been difficult to meet the current road traffic requirements for road surface quality. Therefore, in recent years, modified asphalts with better performance than traditional base asphalt have appeare...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L9/00C08L7/00C08L9/06C08K5/12C08K3/06C08F291/02C08F220/20C08F222/14
CPCC08F253/00C08F279/02C08F289/00C08L95/00C08L9/00C08L7/00C08L9/06C08K5/12C08K3/06C08F222/102
Inventor 黄明温学钧史春华韩明
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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