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Modified asphalt binder and preparation method thereof

A technology of modified asphalt and binder, which is applied to building components, solid fuels, building insulation materials, etc. It can solve the problems of reducing the service life of asphalt and complicating the preparation process, and achieves low cost, abundant resources, and reduced production costs. Effect

Inactive Publication Date: 2015-08-12
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of this method is relatively complicated, and the modifier SBS used is easy to denature, which reduces the service life of asphalt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Raw materials: asphalt, bentonite, flame coal powder, coking coal, fat coal, quicklime powder.

[0035] The preparation method of the modified asphalt binder: heat the asphalt to a molten state, add 10% mass of bentonite to the molten state, and mix evenly for 15 minutes, take out the material, cool it, and grind it to a fine powder with a particle size of 0.074mm , to obtain modified asphalt binder.

[0036] To prepare powder briquettes:

[0037] (1) Mix long-flame coal powder, coking coal, fat coal, quicklime powder and the above-mentioned modified asphalt binder according to the ratio of 19:2:3:21:0.5 with a size of 0.074mm;

[0038] (2) Place the above-mentioned homogeneously mixed material in a preheating box at 200° C. for 10 minutes for preheating treatment.

[0039] (3) The above-mentioned preheated material is tableted with a small tablet press to obtain the above-mentioned powder briquette.

[0040] The powder briquette prepared by the above method has a si...

Embodiment 2

[0042] Raw materials: asphalt, kaolin, flame coal powder, coking coal, fat coal, quicklime powder.

[0043] The preparation method of the modified asphalt binder: heat the asphalt to a molten state, add 25% mass of bentonite to the molten state, and mix evenly for 18 minutes, take out the material, cool it, and grind it to a fine powder with a particle size of 0.148mm , to obtain the above-mentioned modified asphalt binder.

[0044] To prepare powder briquettes:

[0045] (1) Mix long-flame coal powder, coking coal, fat coal, quicklime powder and the above-mentioned modified asphalt binder according to 20:1:2:22:1 with a size of 0.148mm;

[0046] (2) Place the above-mentioned homogeneously mixed material in a preheating box at 150°C for preheating treatment for 20 minutes.

[0047] (3) The above-mentioned preheated material is tableted with a small tablet press to obtain the above-mentioned powder briquette.

[0048] The powder briquette prepared by the above method has a si...

Embodiment 3

[0050] Raw materials: asphalt, diatomaceous earth, flame coal powder, coking coal, fat coal, quicklime powder

[0051] The preparation method of the modified asphalt binder: heat the asphalt to a molten state, take diatomite with a mass ratio of 3:10 to the asphalt powder, add it and mix it uniformly for 20 minutes, take out the material, cool it, and grind it to a particle size of 1.0 mm size fine powder, namely the above-mentioned modified asphalt binder.

[0052] Preparation:

[0053] (1) Mix long-flame coal powder, coking coal, fat coal, quicklime powder and the above-mentioned modified asphalt binder according to the ratio of 18:2:3:20:1.5 with a size of 1.0mm;

[0054] (2) Place the above-mentioned homogeneously mixed material in a preheating box at 180° C. for 18 minutes for preheating treatment.

[0055] (3) The above-mentioned preheated material is tableted with a small tablet press to obtain the above-mentioned powder briquette.

[0056] The powder briquette prepa...

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Abstract

The invention discloses a modifier asphalt binder and a preparation method thereof. The preparation method comprises the following steps: heating asphalt to obtain molten asphalt; adding an inorganic powder modifier into the molten asphalt to obtain a molten mixture; and cooling and grinding the molten mixture to obtain modified asphalt binder; wherein the inorganic powder modifier is at least one of bentonite, kaolin, and diatomite. The raw materials of the modified asphalt binder are abundant, and the cost is low. Long-flame coal powder, coke coal, rich coal, quicklime powder can be effectively utilized and co-used with the modified asphalt binder to produce powder block, which has high fastness and mechanical strength under high-temperature environment and is suitable for massive industrial production.

Description

technical field [0001] The invention belongs to the technical field of coal chemical binders, and in particular relates to modified asphalt binders and a preparation method thereof. Background technique [0002] As a mixed polymer material, asphalt has high density, certain viscosity and temperature sensitivity, and is widely used in the field of building materials and road foundations. In addition, bitumen is also used as a binder in the field of molding of mineral materials and pulverized coal materials. However, asphalt as a binder tends to show a soft melting state at high temperature, which makes its cohesiveness and adsorption molding performance for pulverized coal poor, thus limiting the use of asphalt as a binder in coal powder molding and high temperature heating conditions. further application. [0003] Patent CN 1324086 C discloses a layered silicate clay nano-modified asphalt and its preparation method. The asphalt described in the method is composed of layer...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K3/34C10L5/16
Inventor 夏碧华吴道洪
Owner SHENWU TECH GRP CO LTD
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