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Rock asphalt composite modifier as well as preparation method and application thereof

A compound modifier and compound modified asphalt technology, which is applied in building components, building insulation materials, buildings, etc., can solve the problems of low-temperature performance decline of asphalt mixture, large amount of rock asphalt, etc., and achieve the improvement of softening point and application The effect of simple process and reduced penetration

Inactive Publication Date: 2012-09-26
GUANGZHOU ZHONGGU BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still certain defects and deficiencies in using a certain material alone for modification:
[0009] 1. The low temperature performance of the asphalt mixture is reduced when the amount of rock asphalt is too large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A rock asphalt composite modifier, prepared by the following steps:

[0035] Take 10% rock asphalt and 90% diatomite, grind them into powder respectively, and then blend the two through a screw mixer to obtain a rock asphalt composite modifier; The percentage of the total mass of agent raw materials.

Embodiment 2

[0037] A rock asphalt composite modifier, prepared by the following steps:

[0038] Take 90% of rock asphalt and 10% of diatomite, grind them into powder respectively, and then blend the two through a screw mixer to obtain a rock asphalt composite modifier; The percentage of the total mass of agent raw materials.

Embodiment 3

[0040] A rock asphalt composite modifier, prepared by the following steps:

[0041] Take 65% of rock asphalt and 35% of diatomite, grind them into powder respectively, and then blend the two through a screw mixer to obtain a rock asphalt composite modifier; The percentage of the total mass of agent raw materials.

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Abstract

The invention discloses a rock asphalt composite modifier as well as a preparation method and an application thereof. The rock asphalt composite modifier is prepared through the following steps: grinding 10-90% of rock asphalt and 10-90% of diatomite to be powder and then mixing the powder. The rock asphalt composite modifier can be used for mixing modified asphalt mixture and paved on the roads with the climatic features of high temperature, raininess and intense cold and / or the traffic conditions of heavy load, slow speed and canalization. After the rock asphalt composite modifier is added, the softening point of the composite modified asphalt is improved, the needle penetration is reduced and the high-temperature property of the mixed material is remarkably improved so as to obviously reduce the problems of tracking, pushing, upheaval and pit slots as a result of heavy-load traffic, high-temperature climate and canalization. The rock asphalt composite modifier can be used for remarkably enhancing the adhesive capacity between the asphalt and aggregate and improving the water damage resistance of the asphalt roads.

Description

technical field [0001] The invention relates to a rock asphalt composite modifier, a preparation method and application thereof. Background technique [0002] Rock asphalt is an asphalt-like substance produced by petroleum in the cracks of rocks after hundreds of millions of years of deposition and changes, under the combined effects of heat, pressure, oxidation, catalysts, and bacteria. The molecular weight of rock asphalt is as high as 9000. After rock asphalt is added to matrix asphalt, under the combined action of temperature and small molecule solvent, the micelles with large molecular weight in rock asphalt are broken, exposing many active points, and these active points are immediately absorbed by the matrix asphalt. Filled and saturated by the small molecular substances in the asphalt, forming a brand new combination, and finally forming a new way of filling and surrounding by ordinary asphalt small molecules with the large micelle molecules of rock asphalt as the ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K3/36C04B24/36
Inventor 黄文通
Owner GUANGZHOU ZHONGGU BUILDING MATERIALS
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