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Modified asphalt having self-repairing capability and preparation method

A modified asphalt and self-repairing technology, which is applied to building components, building insulation materials, buildings, etc., can solve the problems of cumbersome, difficult large-scale maintenance of asphalt pavement, and high maintenance costs, so as to save resources and solve difficult large-scale maintenance. , The effect of reducing maintenance costs

Active Publication Date: 2018-01-05
南京路运畅建筑新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its repair actually requires manual operation of an electromagnetic induction machine, which is cumbersome to a certain extent and requires high maintenance costs.
[0006] Therefore, in order to solve the problem of difficult large-scale maintenance of asphalt pavement, those skilled in the art are committed to developing a modified asphalt with self-healing ability and its preparation method

Method used

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  • Modified asphalt having self-repairing capability and preparation method
  • Modified asphalt having self-repairing capability and preparation method
  • Modified asphalt having self-repairing capability and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]Melt 70# asphalt to 130°C, add 4.8wt% SBR, 5.0wt% flake graphite, and 30wt% steel wool accounting for the mass of 70# asphalt, keep a constant temperature of 130°C, and use a high-speed shearer to cut at a speed of 4000rpm for 60min; Then add PPA accounting for 1.5wt% of the 70# asphalt mass, heat to 160°C and keep a constant temperature, use a high-speed shearing machine to cut at a speed of 4000rpm for 40min, and cool to room temperature under natural conditions to obtain modified asphalt;

Embodiment 2

[0049] Melt 70# asphalt to 130°C, add 4.8wt% SBR, 5.0wt% nano-graphite flakes, and 30wt% steel wool to the mass of 70# asphalt, keep the constant temperature at 130°C, and use a high-speed shearing machine to cut at a speed of 4000rpm for 60min Then add PPA accounting for 1.5wt% of the 70# bitumen mass, heat to 160°C and keep a constant temperature, use a high-speed shearing machine to cut for 40min at a speed of 4000rpm, and cool to room temperature under natural conditions to obtain modified asphalt;

Embodiment 3

[0051] Melt 70# asphalt to 130°C, add 4.8wt% SBR, 5.0wt% nano-cesium tungsten bronze powder, and 30wt% steel wool to the mass of 70# asphalt, keep the constant temperature at 130°C, and use a high-speed shearing machine to cut at a speed of 4000rpm Cut for 60 minutes; then add PPA accounting for 1.5wt% of the 70# asphalt mass, heat to 160°C and keep a constant temperature, cut with a high-speed shear at a speed of 4000rpm for 40 minutes, and cool to room temperature under natural conditions to obtain modified asphalt;

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Abstract

The invention discloses modified asphalt having self-repairing capability and a preparation method. According to the method, matrix asphalt, butadiene styrene rubber, an infrared absorption agent, a heat conducting agent and polyphosphoric acid are fully mixed at high temperature by using a high-speed shearing machine to prepare the modified asphalt having self-repairing capability. In addition, the modified asphalt is stable and high in viscosity and toughness and has good high-and-low temperature performance. By adopting the modified asphalt, the service life of a road is prolonged, the roadmaintenance cost is reduced, and the purpose of saving resources is achieved.

Description

technical field [0001] The invention relates to the technical field of modified asphalt, in particular to a modified asphalt with self-repairing ability and a preparation method. Background technique [0002] Asphalt pavement has the advantages of rapid opening to traffic, comfortable driving, and low noise, and has become the preferred pavement in modern road construction. At the same time, during the long-term use of asphalt pavement, it will be affected by factors such as vehicle loads and temperature changes, and its strength and stiffness will gradually decrease. In addition, the problem of reflective cracks caused by the semi-rigid base layer commonly used in my country is easy at this time. Lead to fatigue cracking and pavement damage. Coupled with the erosion of rainwater, the road surface will have loose disease. This has a very adverse effect on the safety and comfort of driving. Therefore, how to improve the road performance of asphalt pavement and prolong its s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L9/06C08K13/04C08K7/00C08K3/04C08K3/32C08K7/04C08K3/08C08K7/06
Inventor 王涛虞骏刚王丽虹沃凤凤
Owner 南京路运畅建筑新型材料有限公司
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