What's the difference between permeable asphalt and ordinary roads?

Hubei Yi Rui Construction Engineering Consulting Co., Ltd. answers for you:

(1) Impervious pavement hinders the infiltration of rainwater and the recharge of groundwater by rainwater. In addition, due to excessive pumping of groundwater, urban ground is prone to subsidence.

(2) The traditional dense pavement has high tire noise. When the vehicle is driving at high speed, when the tire rolls, air will be forced to enter between the tire and the road surface. When the tire rolls over, the air will expand rapidly and produce noise, especially in rainy days, which will affect the life and work of residents.

(3) The traditional urban pavement is waterproof, and rainwater is discharged through the pavement, so the drainage capacity is limited. In case of heavy rain or rainstorm, rainwater is easy to gather on the road surface, and a large number of rainwater is concentrated on motor vehicles and bicycle lanes, resulting in large-scale water accumulation on the road surface.

(4) Impervious pavement reduces the humidity of urban air and accelerates the formation of urban heat island effect.

(5) Impervious pavement is "dead ground", which will affect the ground ecosystem, make the water ecosystem unable to circulate normally, break the balance of urban ecosystem and affect the normal growth of vegetation.

The construction of permeable asphalt pavement mainly includes paving, molding, surface treatment, joint treatment and other processes. Mechanical or manual methods can be used to pave the road; Forming can be carried out by using flat vibrator, vibrating leveling roller, manual push-pull roller and vibrating leveling beam; Surface treatment is mainly to improve the surface impression, and to trim or clean the formed permeable concrete surface; The joints of permeable concrete pavement are basically the same as those of ordinary concrete, and the contraction joints are equally spaced, and the spacing should not exceed 6m.