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Composite asphalt modifier as well as preparation method and application method of composite asphalt modifier

A technology of composite asphalt, application method, applied in building components, building insulation materials, construction, etc., can solve the problems of large amount of polymer, high temperature rigidity, low temperature flexibility, unsatisfactory temperature sensitivity, unstable heat storage, etc., to achieve softening The effect of no point reduction, good compatibility, and reduced usage

Inactive Publication Date: 2013-02-06
江柳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem solved by the present invention is to provide an easy-to-use composite asphalt modifier and its preparation method and application method, which solves the unsatisfactory high-temperature rigidity, low-temperature flexibility and temperature sensitivity of the existing blended composite modified asphalt It also solves the problem that the existing physical modification method prepares modified asphalt materials, the amount of polymer is large, and the problem of unstable heat storage for a long time

Method used

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  • Composite asphalt modifier as well as preparation method and application method of composite asphalt modifier
  • Composite asphalt modifier as well as preparation method and application method of composite asphalt modifier
  • Composite asphalt modifier as well as preparation method and application method of composite asphalt modifier

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Effect test

Embodiment 1

[0038] Base asphalt: 985 grams of 70# heavy traffic asphalt produced by Zhenhai Refinery;

[0039] 15 grams of composite asphalt modifier of the present invention;

[0040] Fully mix and melt 15 grams of the composite asphalt modifier of the present invention and base asphalt at 170-200°C for about 100 minutes to make a modified asphalt composition; the modification results are as follows:

[0041]

[0042] It can be seen from the above table that by adding the composite asphalt modifier of the present invention alone, the penetration and softening point of the asphalt are greatly improved, and the ductility (5°C) is slightly increased, which shows that the high temperature stability and viscosity of the asphalt are significantly improved. Crack resistance improved slightly.

Embodiment 2

[0044] Base asphalt: 950 grams of 70# heavy traffic asphalt produced by Zhenhai Refinery;

[0045] Compatibilizer: 10 grams of furfural extracted oil (aromatic content: above 80%);

[0046] Polymer: 30 grams of YH791-H type SBS produced by Yuehua;

[0047] Cross-linking agent: 0.05 g of sulfur powder;

[0048] 10 grams of composite asphalt modifier of the present invention;

[0049] Heat 950 grams of base asphalt to 150°C, add 10 grams of compatibilizer, 30 grams of polymer, 0.05 grams of cross-linked body, and 10 grams of composite asphalt modifier of the present invention at 150-200°C, fully Mix and melt for 250-300 minutes to make a modified asphalt composition. The modification results are as follows:

[0050]

[0051] It can be seen from the above table that the asphalt compound modified by SBS and the composite asphalt modifier of the present invention can greatly improve the high and low temperature performance and anti-aging performance of the asphalt under...

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Abstract

The invention discloses a composite asphalt modifier as well as a preparation method and an application method of the composite asphalt modifier. The composite asphalt modifier comprises a polymer, a compatilizer, an anti-aging agent, a nano material and a chemical additive, and is prepared by evenly mixing the components at the temperature of 0-200 DEG C. The application method of the composite asphalt modifier comprises two ways of: 1. mixing the composite asphalt modifier with matrix asphalt at the temperature of 120-210 DEG C for 10-500minutes to prepare modified asphalt composition; and 2, mixing the compatilizer, the matrix asphalt, the polymer, crosslinking body and the composite asphalt modifier at the temperature of 120-210 DEG C for 10-500minutes to prepare another modified asphalt composition. The modified asphalt compositions prepared by the method have good high, low temperature performance and high-temperature storage stability.

Description

technical field [0001] The invention relates to a new road material, in particular to a compound asphalt modifier and its preparation method and application method. Background technique [0002] With the development of the economy, road traffic has also undergone heavy load, high speed, and large traffic changes. Ordinary petroleum asphalt is brittle at low temperature and easy to soften at high temperature. Even high-quality and high-grade petroleum asphalt can no longer meet the needs of expressways. Due to the heavy road requirements, the asphalt must be modified to greatly improve the asphalt's high temperature stability, low temperature crack resistance, fatigue resistance, and aging resistance. [0003] Domestic demand for modified asphalt increased from 1.35 million tons in 2005 to 3.4 million tons in 2010, with an average annual growth rate of 20%, much higher than base asphalt. [0004] Different modifiers have different effects on asphalt properties. The Highway R...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L23/06C08L23/12C08L23/08C08L53/02C08L9/06C08L9/02C08L11/00C08L23/16C08L91/00C08K13/02C08K3/36C08K3/22
Inventor 江柳
Owner 江柳
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