Fiber reinforced bituminous pavement stress absorbing layer and construction method thereof

Abstract

The invention discloses a fiber reinforced bituminous pavement stress absorbing layer. Each cubic meter of the fiber reinforced bituminous pavement stress absorbing layer comprises 2.0 to 3.2 kg of SBS modified emulsified asphalt, 80 to 160 g of a glass fiber or basalt fiber and 16 to 24 kg of broken stone. A construction method for the layer comprises the following steps: successively sprinkling the SBS modified emulsified asphalt, the glass fiber or basalt fiber, the SBS modified emulsified asphalt and the broken stone on the surface of a clean and dry road base surface; and rolling the pavement 4 to 6 times 20 min after completion of sprinkling. According to the invention, the prepared fiber reinforced bituminous pavement stress absorbing layer is firmly bonded with a subbase layer and an upper asphalt layer, can prevent occurrence of asphalt surface course reflection cracks and pit slots and damage of a road base and a surface layer by water and prolongs the service life of the pavement.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a fiber-reinforced asphalt pavement stress-absorbing layer and a construction method thereof. Background technique [0002] The existing fiber-reinforced asphalt pavement stress absorbing layer is paved between the semi-rigid base and the asphalt pavement or between the cement concrete pavement and the asphalt pavement, or between the broken cement concrete pavement and the asphalt pavement with high deformation High-performance fiber-reinforced asphalt layers are mainly used to relieve stress concentration at cracks, prevent reflection cracks from forming on asphalt pavements, and prevent water damage to base and surface layers. [0003] In actual engineering, it often occurs that the bond between the asphalt pavement stress-absorbing layer and the underlying layer (semi-rigid base or cement concrete pavement or broken cement concrete pavement) is not strong; at the same tim...

AI Technical Summary

Problems solved by technology

[0003] In actual engineering, it often occurs that the bond between the asphalt pavement stress-absorbing layer and the underlying layer (semi-rigid base or cement concrete pavement or broken cement concrete pavement) is not strong; at the same time, it is easy to move up the base water or surface layer The pavement damage caused by water seepage leads to cracks, potholes, wrapping, rutting and many other diseases in the asphalt surface, which seriously affects the performance of the pavement and shortens the service life of the pavement