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Waste rubber powder modified asphalt and preparation method thereof

A technology of waste rubber powder and modified asphalt, applied in building components, building insulation materials, construction and other directions, can solve the problems of complex rubber modified asphalt process, increase environmental pollution and high production cost, save production equipment and reduce production. The effect of high process and production cost

Active Publication Date: 2014-06-25
王国清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional method is to first desulfurize the rubber powder in a special desulfurization equipment, and then add the desulfurized rubber powder to the asphalt for production. The production process of rubber modified asphalt is complicated and requires special desulfurization equipment. Not only the production cost is high, Moreover, the production efficiency is low, and the probability of environmental pollution is increased.

Method used

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  • Waste rubber powder modified asphalt and preparation method thereof
  • Waste rubber powder modified asphalt and preparation method thereof
  • Waste rubber powder modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A waste rubber powder modified asphalt, the raw materials are composed of the following materials according to the weight ratio: 68% of asphalt, 25% of waste rubber powder, 2% of desulfurizing agent, 3.5% of softening agent, 1% of vulcanizing agent, and 0.5% of vulcanization accelerator.

[0024] The desulfurizing agent is diphenyl disulfide, the softening agent is C9 petroleum resin, the vulcanizing agent is sulfur, and the vulcanization accelerator is a dithiocarbamate vulcanization accelerator; the rubber powder is crushed rubber powder from waste tires, fine The degree is 20-40 mesh; the asphalt is heavy traffic road asphalt.

[0025] The preparation method comprises the following steps:

[0026] (1) Put 68Kg of heavy-duty road asphalt into the reaction kettle, and when heated to 160-180°C, put in 25Kg of waste rubber powder, 2Kg of desulfurizer, and 3.5Kg of softener, stir to mix the above materials evenly, and raise the temperature by 10-30°C;

[0027] (2) Cut th...

Embodiment 2

[0029] A waste rubber powder modified asphalt, the raw material is composed of the following materials according to weight ratio: 62.5% of asphalt, 30% of waste rubber powder, 2% of desulfurizing agent, 4% of softening agent, 1% of vulcanizing agent, and 0.5% of vulcanization accelerator.

[0030] The desulfurizing agent is diphenyl disulfide, the softening agent is C9 petroleum resin, the vulcanizing agent is sulfur, and the vulcanization accelerator is a dithiocarbamate vulcanization accelerator; the rubber powder is crushed rubber powder from waste tires, fine The degree is 20-40 mesh; the asphalt is heavy traffic road asphalt.

[0031] The preparation method comprises the following steps:

[0032] (1) Put 62.5Kg of heavy traffic road asphalt into the reaction kettle, when heated to 160-180°C, put in 30Kg of waste rubber powder, 2Kg of desulfurizer, 4Kg of softener, stir to mix the above materials evenly, and raise the temperature by 10-30°C;

[0033] (2) Use a high-speed ...

Embodiment 3

[0035] A kind of asphalt modified by waste rubber powder, the raw materials are composed of the following materials according to the weight ratio: 60% of asphalt, 35% of waste rubber powder, 1% of desulfurizing agent, 3% of softening agent, 0.5% of vulcanizing agent, and 0.5% of vulcanization accelerator.

[0036] The desulfurizing agent is diphenyl disulfide, the softening agent is C9 petroleum resin, the vulcanizing agent is sulfur, and the vulcanization accelerator is a dithiocarbamate vulcanization accelerator; the rubber powder is crushed rubber powder from waste tires, fine The degree is 20-40 mesh; the asphalt is heavy traffic road asphalt.

[0037] The preparation method comprises the following steps:

[0038] (1) Put 60Kg of heavy traffic road asphalt into the reaction kettle, and when heated to 160-180°C, put in 35Kg of waste rubber powder, 1Kg of desulfurizer, and 3Kg of softener, stir to mix the above materials evenly, and raise the temperature by 10-30°C;

[0039] ...

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Abstract

The invention discloses a waste rubber powder modified asphalt relating to the technical field of asphalt compositions. Raw materials are composed of the following materials by weight ratio: asphalt, waste rubber powder, a desulfurizing agent, a softening agent, a vulcanizing agent and a vulcanization accelerator. A preparation method comprises the following steps of (1) pouring the asphalt into a reaction kettle, heating, adding the waste rubber powder, the desulfurizing agent and the softening agent into the reaction kettle to uniformly mix, and raising the temperature; and (2) smashing the waste rubber powder to 150-200 meshes to be added to a vulcanizing tank and adding the vulcanizing agent and the vulcanization accelerator. According to the preparation method, the waste rubber powder is directly added into the asphalt and then the desulfurizing agent is added so that the rubber powder is heated for swelling and desulfurized simultaneously in the reaction kettle, production equipment is saved, special rubber powder desulfurizing equipment is not used, the mixing amount of the waste rubber powder is large, the production cost is reduced, the production processes are reduced, the desulfurizing time is long, desulfurization is complete, and the production efficiency is high.

Description

technical field [0001] The invention relates to the field of asphalt composition technology. Background technique [0002] With the continuous development of the social economy, the road traffic volume is increasing, and the axle load is also getting heavier, which will cause great damage to the road surface and seriously affect the service life of the road and the development of the social economy. This situation is largely related to the bonding material of the road surface - asphalt, so the performance of asphalt must be improved to improve the above situation. [0003] The use of various polymer-modified asphalt can greatly improve the performance of asphalt pavement. Compared with ordinary asphalt, polymer-modified asphalt can greatly improve the high-temperature anti-flow and low-temperature anti-cracking capabilities, and enhance aging resistance and weather resistance. Adhesion ability is also enhanced. The pavement paved with polymer modified asphalt can significa...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L21/00C08J11/28
CPCY02W30/62
Inventor 王国清
Owner 王国清
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