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Modified asphalt material for road and its prepn

A technology for modifying asphalt and roads, which is applied to building insulation materials, building components, buildings, etc. It can solve problems such as unsatisfactory heat resistance and aging resistance, complex modification processing technology, and reduced temperature sensitivity, so as to achieve good adhesion. Adhesion and anti-stripping properties, improved weather resistance and UV resistance, and the effect of high viscosity of asphalt

Inactive Publication Date: 2004-04-07
INST OF POLYMER NORTHWEST NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, thermoplastic elastomer styrene-butadiene block copolymer (SBS) can improve crack resistance, flow resistance, wear resistance and adhesion, and the temperature sensitivity is significantly reduced, but the heat resistance and aging resistance are not ideal, and the price is relatively high. Expensive; styrene-butadiene rubber (SBR) can significantly improve adhesion, crack resistance, durability and low-temperature ductility, but the modification process is complicated and engineering application is difficult; polypropylene (APP), polyethylene (PE) modified The high temperature performance of permanent asphalt is good, but the low temperature performance is poor

Method used

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  • Modified asphalt material for road and its prepn
  • Modified asphalt material for road and its prepn
  • Modified asphalt material for road and its prepn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Heat 76wt% base asphalt to heat up and melt until it can flow. Pay attention to constant stirring to avoid local overheating. While stirring, add 9wt% powdered styrene-butadiene rubber, 10wt% natural asphalt ore, and 5wt% organic metal soap, and then maintain the temperature at 160 ° C ~ 200 ° C And rotating speed 3000rpm~5000rpm, high-speed shearing and mixing for 40min~60min, filter, sample preparation, elemental analysis, FT-IR analysis, thermal analysis, optical micrography, scanning electron microscope photography, four-component determination, wax content determination, Softening point, penetration, elongation determination and mass loss, penetration ratio and elongation determination after rotary film oven aging test.

Embodiment 2

[0035] Heat 96wt% base asphalt to heat up and melt until it can flow. Pay attention to continuous stirring to avoid local overheating. While stirring, add 2wt% powdered styrene-butadiene rubber, 1wt% natural asphalt ore, and 1wt% organometallic soap, and then maintain the temperature at 160 ° C ~ 200 ° C And rotating speed 3000rpm~5000rpm, high-speed shearing and mixing for 40min~60min, filter, sample preparation, elemental analysis, FT-IR analysis, thermal analysis, optical micrography, scanning electron microscope photography, four-component determination, wax content determination, Softening point, penetration, elongation determination and mass loss, penetration ratio and elongation determination after rotary film oven aging test.

Embodiment 3

[0037]Heat 84wt% base asphalt to heat up and melt until it can flow, pay attention to constant stirring to avoid local overheating, add powdered styrene-butadiene rubber 7.3wt%, natural asphalt ore 8wt%, organometallic soap 0.7wt% while stirring, and then maintain the temperature at 160℃~ 200°C and rotating speed 3000rpm-5000rpm, high-speed shear mixing for 40min-60min, filter, sample preparation, elemental analysis, FT-IR analysis, thermal analysis, optical micrography, scanning electron microscope photography, four-component determination, wax content Determination, softening point, penetration, elongation determination and mass loss, penetration ratio and elongation determination after rotary film oven aging test.

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PUM

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Abstract

The present invention relates to one kind of modified asphalt material for road and its preparation. The modified asphalt material is prepared with asphalt with high wax content as base material and through adding powdered styrene-butadiene rubber, natural asphalite and organic metallic soap. The modified asphalt has the features of high temperature stability, low temperature crack resistance, fatigue resistance, peeling resistance, antiageing, etc. as well as improved comprehensive road use performance.

Description

technical field [0001] The invention relates to a technology for modifying asphalt by using a high polymer, in particular to a modified asphalt material used for roads and a preparation method thereof. Background technique [0002] At present, most of the high-grade highways in the world use asphalt pavement, because it has sufficient mechanical strength and certain elastic and plastic deformation capabilities, can bear the load well without damage, and the adhesion between asphalt and automobile tires is good, ensuring It is safe for driving; it has a high degree of shock absorption, so that the car can run fast, stable and low noise; it does not raise dust, easy to clean and rinse; the maintenance work is simple, and it can be recycled. However, asphalt pavement also has its fatal weakness. In summer in high-temperature areas, when the traffic volume is large, phenomena such as rutting, wave movement, and wheel sticking will appear; in cold low-temperature climates, the pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/095C08L95/00
Inventor 王云普李玉峰王荣民张继刘小军王永峰
Owner INST OF POLYMER NORTHWEST NORMAL UNIV
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