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Composite modified asphalt

A technology of compound modified asphalt and modified asphalt, applied in building components, building insulation materials, buildings, etc., can solve the problems of not being able to meet road performance at the same time, not being very compatible, and having different functions and prices. Good economic benefits, improve compatibility, reduce the effect of release

Inactive Publication Date: 2015-01-07
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many problems in modified asphalt. First, the compatibility is poor. In the process of asphalt modification, the modifier and asphalt are simply uniformly mixed, and the two are not compatible well; secondly, The function is single, and most of the modifiers added to the asphalt can only improve a certain function of the asphalt, with little effect, and cannot meet the requirements of road performance at the same time; thirdly, the cost is high, and there are many types of modifiers currently available in the market. The functions are different, the price is high, and the use of modifiers leads to an increase in the cost of the unit project; finally, the construction process is complicated. Before some modifiers are added to the asphalt, the modifier needs to be treated first, and then the asphalt is modified.

Method used

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  • Composite modified asphalt
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The composite modified asphalt in this example is made from the following raw materials in parts by weight: 100 parts of asphalt, 7.6 parts of epidote powder, 7.3 parts of rhyolite powder, 1.3 parts of zotinite powder, γ-aminopropyltriethoxysilane 1.2 parts, 0.5 part of dibutyltin diacetate, 0.5 part of dispersant; Described asphalt is preferably matrix asphalt, SBS modified asphalt, SBR modified asphalt or natural rubber modified asphalt, what the present embodiment adopted is matrix asphalt; Described The dispersant is preferably one or more of sodium polymethacrylate, sodium tripolyphosphate, sodium hexametaphosphate and sodium polyacrylate. What this embodiment uses are sodium tripolyphosphate, sodium hexametaphosphate and polyacrylic acid Sodium is mixed uniformly at a mass ratio of 0.5:1:2.

[0025] The preparation method of the present embodiment composite modified asphalt comprises the following steps:

[0026] Step 1, mixing the epidote powder, the rhyolite po...

Embodiment 2

[0031] The composite modified asphalt in this example is made from the following raw materials in parts by weight: 100 parts of asphalt, 3 parts of epidote powder, 3 parts of rhyolite powder, 0.1 part of zotinite powder, γ-aminopropyltriethoxysilane 0.1 part, 0.1 part of dibutyltin diacetate; the asphalt is preferably base asphalt, SBS modified asphalt, SBR modified asphalt or natural rubber modified asphalt, and the present embodiment uses base asphalt.

[0032] The preparation method of the present embodiment composite modified asphalt comprises the following steps:

[0033] Step 1, mixing the epidote powder, the rhyolite powder and the zeolite powder evenly to obtain a mixture 1;

[0034] Step 2, prepare the ethanol solution of γ-aminopropyl triethoxysilane with the ethanol solution of 30% ethanol with mass percent concentration, then join mixture one and dibutyltin diacetate to the γ-aminopropyl triethoxysilane In the ethanol solution, stir evenly and soak for 1 hour to o...

Embodiment 3

[0038] The composite modified asphalt in this example is made from the following raw materials in parts by weight: 100 parts of asphalt, 5 parts of epidote powder, 5 parts of rhyolite powder, 0.5 part of zotinite powder, γ-aminopropyltriethoxysilane 0.5 part, 0.3 part of dibutyltin diacetate, and 0.3 part of dispersant; the asphalt is preferably base asphalt, SBS modified asphalt, SBR modified asphalt or natural rubber modified asphalt, and what this embodiment uses is SBS modified asphalt; The dispersant is preferably one or more of sodium polymethacrylate, sodium tripolyphosphate, sodium hexametaphosphate and sodium polyacrylate. What this embodiment uses is sodium hexametaphosphate and sodium polyacrylate. A mixture made by mixing evenly at a ratio of 1:1.

[0039] The preparation method of the present embodiment composite modified asphalt comprises the following steps:

[0040] Step 1, mixing the epidote powder, the rhyolite powder and the zeolite powder evenly to obtain ...

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Abstract

The invention provides composite modified asphalt which is prepared from the following raw materials in parts by weight: 100 parts of asphalt, 3-12 parts of epidote powder, 3-12 parts of rhyolite powder, 0.1-3 parts of stannite powder, 0.1-2 parts of gamma-aminopropyl triethoxysilane, 0.1-0.8 part of dibutyltin diacetate and 0-0.8 part of dispersing agent. According to the benefits of the composite modified asphalt, the composite modified asphalt has the efficacies of hot mixing and emission reduction while the asphalt pavement performance can be met, the release quantity of asphalt fume in the mixing process can be effectively reduced, the construction surrounding environment is improved, and the economic benefit and the social benefit are good.

Description

technical field [0001] The invention belongs to the technical field of road materials, and in particular relates to a composite modified asphalt. Background technique [0002] With the improvement of people's travel requirements, the road structure in my country has developed from traditional graded gravel pavement, asphalt surface treatment, asphalt penetration and other low-grade pavements to asphalt pavement with the advantages of good driving comfort and easy maintenance. In the actual application of asphalt pavement, most of the modified asphalt is used as the raw material for road use because the base asphalt cannot meet the road performance requirements well. [0003] At present, there are many problems in modified asphalt. First, the compatibility is poor. In the process of asphalt modification, the modifier and asphalt are simply uniformly mixed, and the two are not compatible well; secondly, The function is single, and most of the modifiers added to the asphalt ca...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L7/00C08K13/02C08K5/57C08K5/544
Inventor 王朝辉陈森蒋婷婷葛娟王新岐高志伟郭滕滕
Owner CHANGAN UNIV
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