Multifunctional permeable asphalt mixture and preparation method thereof

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 ...

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.

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