Bitumen mixture anti-stripping agent

An asphalt mixture and anti-stripping agent technology, applied in the field of asphalt mixture anti-stripping agent, can solve the problems of asphalt pavement damage, unfavorable environmental protection, poor thermal stability, etc., to reduce pollution, improve adhesion, and reduce costs Effect

Inactive Publication Date: 2013-05-08
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used anti-stripping agents are amines and phosphate ester products, but they mainly solve the damage of fresh water to asphalt pavement, and their thermal stability is not good, and harmful gases are easily decomposed when heated, which is not conducive to environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Grinding the construction waste after removing the organic matter, the fineness is required to be 150 mesh;

[0016] (2) Grinding the alkali slag to a fineness of 150 mesh;

[0017] (3) Stop heating when the coal gangue incineration ash is heated to a temperature of 750°C, and then keep the coal gangue incineration ash for 3 hours;

[0018] (4) Use sulfoaluminate as an admixture;

[0019] (5) Mix and grind 300kg of construction waste micropowder in step (1), 250kg of alkali slag micropowder in step (2), 150kg of coal gangue incineration ash in step (3), and 10kg of additive in step (4) to make asphalt mixture Anti-stripping agent, the required fineness is 150 mesh.

[0020] Add 2% (percentage by weight) of the anti-stripping agent of the present invention in the asphalt mixture to replace the filler in the asphalt mixture. Increased asphalt stone surface adhesion rating from 3 to 5.

Embodiment 2

[0022] (1) Grind 500kg of construction waste from which organic matter has been removed as construction waste fine powder, requiring a fineness of 150 mesh;

[0023] (2) Grinding the alkali slag fine powder to a fineness of 150 mesh;

[0024] (3) Stop heating when the coal gangue incineration ash is heated to a temperature of 900°C, and then keep the coal gangue incineration ash for 2.5 hours;

[0025] (4) The mixture of Portland cement clinker and triethanolamine is used as an admixture;

[0026] (5) Mix and grind 500kg of construction waste micropowder in step (1), 100kg of alkali slag micropowder in step (2), 150kg of coal gangue incineration ash in step (3), and 10kg of additive in step (4) to make asphalt mixture Anti-stripping agent, the required fineness is 150 mesh.

[0027] Add 2% (percentage by weight) of the anti-stripping agent of the present invention in the asphalt mixture to replace the filler in the asphalt mixture. Increased asphalt stone surface adhesion r...

Embodiment 3

[0029] (1) Grind 400kg of construction waste from which organic matter has been removed as construction waste micropowder, requiring a fineness of 150 mesh;

[0030] (2) Grinding the alkali slag fine powder to a fineness of 150 mesh;

[0031] (3) Stop heating when the coal gangue incineration ash is heated to a temperature of 800°C, and then keep the coal gangue incineration ash for 2.5 hours;

[0032] (4) A mixture of sulfoaluminate, Portland cement clinker and triethanolamine is used as an admixture;

[0033] (5) Mix and grind 400kg of construction waste micropowder in step (1), 200kg of alkali slag micropowder in step (2), 130kg of coal gangue incineration ash in step (3), and 20kg of additives in step (4) to make asphalt mixture Anti-stripping agent, the required fineness is 150 mesh.

[0034] Add 2% (percentage by weight) of the anti-stripping agent of the present invention in the asphalt mixture to replace the filler in the asphalt mixture. Increased asphalt stone sur...

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Abstract

The invention discloses a bitumen mixture anti-stripping agent which consists of the following components in parts by weight: 30-50 parts of construction waste micropowder, 10-25 parts of alkali residue micropowder, 10-15 parts of coal gangue incinerator ash and 1-3 parts of additive, wherein the construction waste micropowder is formed by grinding construction waste (basically consisting of 20 percent of waste concrete and 80 percent of waste tiles) in which organic matters are removed; the coal gangue incinerator ash is coal gangue incinerator ash which is activated by keeping the temperature at 750-900 DEG C for 2.5-3 hours; and the additive is one or more of sulfoaluminate, silicate cement clinker and triethanolamine. Compared with like products in the prior art, the bitumen mixture anti-stripping agent has the advantages that the harm of chlorine salt and water to bitumen can be prevented, the anti-stripping agent is prevented from being decomposed due to heating, the environmental harm is avoided, and the price is low.

Description

technical field [0001] The invention relates to an asphalt mixture anti-stripping agent. Background technique [0002] Since my country's coastal areas are located in the southeast monsoon region, they will be affected by the rainy climate from May to June every year; while the oceanic climate keeps the air humidity and chlorine salts in this area at a high level; and because it is located on the west coast of the Pacific Ocean, every year From June to September, typhoons will also have a greater impact on this area. Since coastal roads, urban roads and port traffic are directly attacked by sea breeze, seawater or seawater mist will be brought to the asphalt mixture road. Under the double action of water and chloride salt, the damage to asphalt concrete pavement will be accelerated, so the asphalt pavement in coastal areas has higher requirements for preventing double damage of water and chloride salt. The main way to solve this problem is to add asphalt anti-stripping agent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B22/14C04B28/04C04B18/30
CPCY02W30/91
Inventor 孙家瑛顾昕谢京来
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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