Multifunctional permeable asphalt mixture and preparation method thereof

A technology of permeable asphalt and mixture, which is applied in the field of multifunctional permeable asphalt mixture and its preparation, can solve the problems of poor low-temperature stability and high cost of modified asphalt, improve viscosity and high-temperature deformation resistance, reduce preparation cost, and resist The effect of improved shear deformation ability

Active Publication Date: 2017-09-05
南京交科瑞路技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, the high-viscosity asphalt used in permeable asphalt mixture in my country often relies on imported Japanese TPS high-viscosity asphalt or TPS high-viscosity modifier, which is expensive
Many experts and scholars in our country have also carried out in-depth research on high-viscosity asphalt. Although these technologies can make the viscosity of asphalt at 60 °C reach more than 20000 Pa. The problem of poor stability
In addition, there are no reports on the successful application of permeable asphalt mixtures to purify polluted water.

Method used

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  • Multifunctional permeable asphalt mixture and preparation method thereof
  • Multifunctional permeable asphalt mixture and preparation method thereof
  • Multifunctional permeable asphalt mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of modified asphalt:

[0026] Heat the finished 70# base asphalt to 180°C, add 2% SBS, 2% tackifier terpene resin, 8% waste rubber powder, stir for 30 minutes, then shear at 190°C for 1 hour at 6000rpm, and develop at 160°C 1h, add 0.2% MWCNT, shear at 5000rpm at 160°C for 30min, and develop at 160°C for 1h to obtain modified asphalt.

[0027] Preparation of multifunctional permeable asphalt mixture:

[0028] (1) The gradation is as follows, the oil-stone ratio is 4.8%, and the equal volume of percolation material replaces 50% of fine aggregate.

[0029]

[0030]

[0031] (2) Preparation process

[0032] Mineral material heating temperature 190～200℃ asphalt heating temperature 180℃ mixing temperature of asphalt mixture 185-190℃ Compaction temperature 170℃

Embodiment 2

[0034] Preparation of modified asphalt:

[0035] Heat the finished 70# base asphalt to 180°C, add 3% SBS, 1.5% tackifier terpene resin, 8% waste rubber powder, stir for 30min, then shear at 190°C for 1 hour at 6000rpm, and develop at 160°C 1h, add 0.3% MWCNT, shear at 5000rpm at 160°C for 30min, and develop at 160°C for 1h to obtain modified asphalt.

[0036] Preparation of multifunctional permeable asphalt mixture:

[0037] (1) The gradation is as follows, the oil-stone ratio is 4.8%, and the equal volume of percolation material replaces 30% of fine aggregate.

[0038]

[0039] (2) Preparation process

[0040] Mineral material heating temperature 190～200℃ asphalt heating temperature 180℃ mixing temperature of asphalt mixture 185-190℃ Compaction temperature 170℃

Embodiment 3

[0042] Preparation of modified asphalt:

[0043] Heat the finished 70# matrix asphalt to 180°C, add 3% SBS, 2% tackifier terpene resin, 8% waste rubber powder, stir for 30min, then shear at 190°C for 1h at 6000rpm, and develop at 160°C 1h, add 0.2% MWCNT, shear at 5000rpm at 160°C for 30min, and develop at 160°C for 1h to obtain modified asphalt.

[0044]Preparation of multifunctional permeable asphalt mixture:

[0045] (1) The gradation is as follows, the oil-stone ratio is 4.8%, and the equal volume of percolation material replaces 10% fine aggregate.

[0046]

[0047] (2) Preparation process

[0048] Mineral material heating temperature 190～200℃ asphalt heating temperature 180℃ mixing temperature of asphalt mixture 185-190℃ Compaction temperature 170℃

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Abstract

The invention discloses a multifunctional permeable asphalt mixture and a preparation method thereof. The multifunctional permeable asphalt mixture comprises the following components in parts by mass: 100 parts of mineral aggregate, 4-6 parts of modified asphalt and 0.1-0.5 part of a fiber stabilizer, wherein the mineral aggregate is composed of coarse aggregate, fine aggregate, infiltration materials and mineral powder; the modified asphalt is composed of 100 parts of matrix asphalt, 4-8 parts of SBS, 8-12 parts of waste rubber powder, 0.4-0.9 part of MWCNT (Multi Walled Carbon Nanotubes) and 2-5 parts of a tackifier; and the fiber stabilizer is one of lignin fibers, mineral fibers or polyester fibers. According to the multifunctional permeable asphalt mixture provided by the invention, the mineral aggregate contains the infiltration materials, and the infiltration materials refer to low-cost and readily-available materials such as volcanic, activated carbon, ceramsite, zeolite or crab shell-clam shell powder and the like, so that rainfall runoff pollution can be effectively controlled, the aims of fully utilizing rainwater resources and supplementing groundwater resources are achieved, and the preparation cost can be effectively reduced. The used modified asphalt is compounded by the MWCNT and SBS, so that the shear deformation resistance of the asphalt can be obviously improved.

Description

technical field [0001] The invention relates to a pavement material for road traffic, in particular to a multifunctional permeable asphalt mixture and a preparation method thereof. Background technique [0002] During the rapid development of urbanization in my country, there are problems such as high development intensity and many hard pavements. At present, more than 90% of the asphalt pavements that have been built are designed according to the principle of dense gradation, which belongs to dense asphalt with a small design void ratio. concrete pavement. This kind of pavement structure has the characteristics of being dense, not easy to permeate, and has high strength. On the slippery surface, the water in the road area is too late to drain away, which can easily cause water mist and glare, and the car is prone to water drift when driving at high speed, which seriously affects the anti-skid performance of the road surface and driving safety. On the other hand, more than ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/00017C04B2111/0075C04B14/00C04B18/141C04B24/2676C04B18/22C04B14/026C04B2103/0068C04B2103/44
Inventor 王文峰吴冬生朱浩然于明明吴春颖刘伟牛晓伟
Owner 南京交科瑞路技术有限公司
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