Thin-layer asphalt pavement bonding layer capable of absorbing stress and construction method of thin-layer asphalt pavement bonding layer

Abstract

The invention discloses a thin asphalt pavement bonding layer capable of absorbing stress and a construction method of the thin asphalt pavement bonding layer, the bonding layer is of a sandwich structure formed by wrapping an intermediate composite fiber grating with upper and lower wheel-non-sticking emulsified asphalt, and the composite fiber grating layer is formed by weaving microwave absorbing fibers and glass fibers. The construction method comprises the following steps: preparing the wheel-sticking-free emulsified asphalt, and then sequentially paving the wheel-sticking-free emulsified asphalt, the composite fiber grid and the wheel-sticking-free emulsified asphalt to form the bonding layer. The bonding layer disclosed by the invention can be heated under microwave excitation, so that the viscosity of the wheel-sticking-free emulsified asphalt is improved, and the phenomena of upheaval, stripping and the like of an upper surface layer of a thin-layer asphalt pavement are prevented; reflection crack diffusion stress of the lower surface layer and the middle surface layer can be consumed, load stress of vehicles on the thin-layer asphalt pavement is absorbed, upward extension of reflection cracks of the middle surface layer and the lower surface layer is inhibited, and the service life of the thin-layer asphalt pavement is prolonged.

Description

technical field [0001] The invention belongs to the field of bonding layers, and in particular relates to a stress-absorbing thin asphalt pavement bonding layer and a construction method thereof. Background technique [0002] The sticky layer is a thin layer of asphalt material that is sprinkled to strengthen the bonding effect between the layers in the asphalt pavement structure. Its function is to make the layers of the asphalt pavement, the new asphalt layer and the old asphalt pavement approximately bonded into a whole. When the asphalt pavement is repeatedly acted by the vertical and horizontal loads caused by the vehicle load, the bonding material can resist various stresses generated inside the pavement structure, especially the shear force between layers, which can ensure that the asphalt There will be no damage such as slippage between the pavement layers, thereby ensuring the excellent road performance of the asphalt pavement and prolonging its service life. [00...

AI Technical Summary

Problems solved by technology

However, there are many kinds of admixtures, the compatibility with asphalt is relatively poor, and the mixing temperature needs to be high, so the production process requirements for thin-layer pavement asphalt mixture are relatively high.

[0005] It can be seen that no matter what method is adopted, it is impossible to fundamentally solve the damage caused by the load stress of the thin layer of asphalt overlay and the extension stress of the reflection crack of the lower layer to the thin layer of asphalt pavement.

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