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Activated gangue powder nanocomposite modified asphalt mixture and its preparation method

A nano-composite and modified asphalt technology, applied in the field of road engineering materials, can solve the problems of occupying large land and farmland, environmental pollution, etc., and achieve the effects of less surface energy defects, improved road performance, and strong surface adsorption.

Active Publication Date: 2019-06-04
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These abandoned coal gangues are generally piled up around coal mines, forming huge piles of coal gangue, which not only occupy a large amount of land and farmland, but also cause environmental pollution

Method used

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  • Activated gangue powder nanocomposite modified asphalt mixture and its preparation method
  • Activated gangue powder nanocomposite modified asphalt mixture and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: A nano-composite modified asphalt mixture of activated coal gangue powder is made of the following raw materials in parts by weight: 3 parts of asphalt, 0.09 parts of nano-composite modifier, and 100 parts of ore materials. The nanocomposite modifier contains 0.06 parts of nano-silica and 0.03 part of nano-alumina, and the mineral material contains 14 parts of ore powder and 3.5 parts of activated coal gangue powder; the mineral material used in this embodiment is AC-16 type Mineral material, the asphalt used is road petroleum asphalt.

Embodiment 2

[0028] Example 2: A nano-composite modified asphalt mixture of activated coal gangue powder, made of the following raw materials in parts by weight: 4 parts of asphalt, 0.12 parts of nano-composite modifier, and 100 parts of mineral materials, wherein, the The nanocomposite modifier contains 0.08 parts of nano-silica and 0.04 parts of nano-alumina, and the mineral material contains 12.25 parts of mineral powder and 5.25 parts of activated coal gangue powder; the mineral material used in this embodiment is AC-16 type Mineral materials, the bitumen used is coal tar pitch.

Embodiment 3

[0029] Embodiment 3: A nano-composite modified asphalt mixture of activated coal gangue powder, made of the following raw materials in parts by weight: 4.5 parts of asphalt, 0.135 parts of nano-composite modifier, and 100 parts of mineral materials, wherein, the The nanocomposite modifier contains 0.09 parts of nano-silica and 0.045 parts of nano-alumina, and the mineral material contains 10.5 parts of mineral powder and 7 parts of activated coal gangue powder; the mineral material used in this embodiment is AC-16 type Mineral material, the asphalt used is road petroleum asphalt.

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Abstract

The invention discloses an activated coal gangue powder nano-composite modified asphalt mixture. The activated coal gangue powder nano-composite modified asphalt mixture is prepared from, by weight, 3-7 parts of asphalt, 0.09-0.21 parts of a nano-composite modifier and 100 parts of mineral aggregates, wherein the nano-composite modifier comprises, by weight, 0.06-0.14 parts of nano-silica and 0.03-0.07 parts of nano-alumina; and the mineral aggregates comprise 14-7 parts of mineral powder and 3.5-10.5 parts of activated coal gangue powder. The pavement mixture has the advantage of excellent pavement performances, wide sources of materials, large destroy load resistance, and remarkably improved high-temperature stability, low-temperature stability and water stability. The invention also discloses a preparation method of the asphalt mixture. The preparation method has the advantages of cleanness, no waste pollution, simple preparation process, and high economic and social values.

Description

technical field [0001] The invention belongs to the technical field of road engineering materials, and in particular relates to an activated coal gangue powder nano-composite modified asphalt mixture and a preparation method thereof. Background technique [0002] With the acceleration of the urbanization process and the supporting construction of road administration facilities, the road traffic industry is booming, and the asphalt pavement has also become the main structural form of the road pavement. However, due to the increase in high and low temperature extreme weather and the uncertainty of the use environment, many highway asphalt pavements in my country are prone to high and low temperature damage and water damage after they are completed and operated. Therefore, the problem of improving the quality of asphalt pavement needs to be solved urgently. [0003] my country is the country with the largest amount of coal mining in the world, and with the advancement of my cou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B111/20C04B111/27
CPCC04B26/26C04B2111/00017C04B2111/20C04B2111/27C04B2201/50C04B14/06C04B14/303C04B18/141C04B18/12C04B20/008
Inventor 李振霞陈渊召
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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