Asphalt pavement would be renovated every 5-10 years, so in the road overhaul construction, there will be milled down a large overhaul of waste asphalt mixture, if piled up, not only pollute the environment, but also needs to increase specialized disposal costs. Recycling is to solve the mountain of waste asphalt mixture of new ideas.

In Beijing Institute of Architectural Engineering, Professor Ji Jie, leading her team are studying this emerging low-carbon technologies, hot mix asphalt regeneration technology. This technology, is not only aimed to achieve the waste asphalt mixture recycling, but also to maximize the effect of limiting damage to the environment, by lowing production and construction temperature, to reduce emissions and protect the environment. This recycled hot mix asphalt can not only re-paving the road, but also have better high temperature resistance than new asphalt.

This hot mix asphalt recycle technologies will be applied in the drainage pavement, making drainage pavement have many advantages. In such a pavement structure, each of the leakage channel is a gap, but also a sound-absorbing device. It not only can effectively reduced vehicle noise, making road noise reduction 3-4 db than the normal, but also increase driving comfort. It also has good water permeability, with the road in the city can also be alleviate the urban waterlogging to some extent.