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...

Examples

Embodiment 1

[0026] The components and contents of the thin asphalt pavement adhesive layer in this embodiment are shown in Table 1 below. Wherein, the SBS aqueous emulsion is formed by mixing linear SBS, sodium lauryl sulfate and water in a ratio of parts by weight of 10:1:89.

[0027] Table 1 Component content of thin asphalt pavement adhesive layer

[0028]

[0029] The construction process steps of the thin-bed asphalt pavement bonding course of the present embodiment are as follows:

[0030] (1) Preparation of non-stick wheel emulsified asphalt: first, heat base asphalt to 170°C, add asphalt blending agent and emulsified asphalt stabilizer in turn, and stir to obtain modified asphalt; mix asphalt emulsifier, SBS water emulsion and water-based resin with 48 Dilute with water, add hydrochloric acid, adjust the pH value to 2, and make a soap solution; adjust the temperature of the modified asphalt to 165°C, adjust the temperature of the soap solution to 50°C, and mix the two to obtai...

Embodiment 2

[0033] The components and contents of the thin asphalt pavement adhesive layer in this embodiment are shown in Table 2 below. Among them, the SBS aqueous emulsion is formed by mixing linear SBS, sodium lauryl sulfate and water with a weight fraction ratio of 10:1:89.

[0034] Table 2 Component content of thin asphalt pavement adhesive layer

[0035]

[0036] The construction process steps of the thin-bed asphalt pavement bonding course of the present embodiment are as follows:

[0037] (1) Preparation of non-stick wheel emulsified asphalt: first, heat base asphalt to 170°C, add asphalt blending agent and emulsified asphalt stabilizer in turn, and stir to obtain modified asphalt; mix asphalt emulsifier, SBS water emulsion and water-based resin with 48 Dilute with water, add hydrochloric acid, adjust the PH value to 2, and make a soap solution; adjust the temperature of the modified asphalt to 165°C, adjust the temperature of the soap solution to 50°C, and mix the two to obt...

Embodiment 3

[0040] The components and contents of the thin asphalt pavement adhesive layer in this embodiment are shown in Table 3 below. Among them, the SBS aqueous emulsion is formed by mixing linear SBS, sodium lauryl sulfate and water with a weight fraction ratio of 10:1:89.

[0041] Table 3 Component content of thin asphalt pavement adhesive layer

[0042]

[0043] The construction steps of the thin-bed asphalt pavement bonding course of the present embodiment are as follows:

[0044] (1) Preparation of non-stick wheel emulsified asphalt: first, heat base asphalt to 170°C, add asphalt blending agent and emulsified asphalt stabilizer in turn, and stir to obtain modified asphalt; mix asphalt emulsifier, SBS water emulsion and water-based resin with 48 Dilute with water, add hydrochloric acid, adjust the pH value to 2, and make a soap solution; adjust the temperature of the modified asphalt to 165°C, adjust the temperature of the soap solution to 50°C, and mix the two to obtain a no...

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...

Examples

Embodiment 1

[0026] The components and contents of the thin asphalt pavement adhesive layer in this embodiment are shown in Table 1 below. Wherein, the SBS aqueous emulsion is formed by mixing linear SBS, sodium lauryl sulfate and water in a ratio of parts by weight of 10:1:89.

[0027] Table 1 Component content of thin asphalt pavement adhesive layer

[0028]

[0029] The construction process steps of the thin-bed asphalt pavement bonding course of the present embodiment are as follows:

[0030] (1) Preparation of non-stick wheel emulsified asphalt: first, heat base asphalt to 170°C, add asphalt blending agent and emulsified asphalt stabilizer in turn, and stir to obtain modified asphalt; mix asphalt emulsifier, SBS water emulsion and water-based resin with 48 Dilute with water, add hydrochloric acid, adjust the pH value to 2, and make a soap solution; adjust the temperature of the modified asphalt to 165°C, adjust the temperature of the soap solution to 50°C, and mix the two to obtai...

Embodiment 2

[0033] The components and contents of the thin asphalt pavement adhesive layer in this embodiment are shown in Table 2 below. Among them, the SBS aqueous emulsion is formed by mixing linear SBS, sodium lauryl sulfate and water with a weight fraction ratio of 10:1:89.

[0034] Table 2 Component content of thin asphalt pavement adhesive layer

[0035]

[0036] The construction process steps of the thin-bed asphalt pavement bonding course of the present embodiment are as follows:

[0037] (1) Preparation of non-stick wheel emulsified asphalt: first, heat base asphalt to 170°C, add asphalt blending agent and emulsified asphalt stabilizer in turn, and stir to obtain modified asphalt; mix asphalt emulsifier, SBS water emulsion and water-based resin with 48 Dilute with water, add hydrochloric acid, adjust the PH value to 2, and make a soap solution; adjust the temperature of the modified asphalt to 165°C, adjust the temperature of the soap solution to 50°C, and mix the two to obt...

Embodiment 3

[0040] The components and contents of the thin asphalt pavement adhesive layer in this embodiment are shown in Table 3 below. Among them, the SBS aqueous emulsion is formed by mixing linear SBS, sodium lauryl sulfate and water with a weight fraction ratio of 10:1:89.

[0041] Table 3 Component content of thin asphalt pavement adhesive layer

[0042]

[0043] The construction steps of the thin-bed asphalt pavement bonding course of the present embodiment are as follows:

[0044] (1) Preparation of non-stick wheel emulsified asphalt: first, heat base asphalt to 170°C, add asphalt blending agent and emulsified asphalt stabilizer in turn, and stir to obtain modified asphalt; mix asphalt emulsifier, SBS water emulsion and water-based resin with 48 Dilute with water, add hydrochloric acid, adjust the pH value to 2, and make a soap solution; adjust the temperature of the modified asphalt to 165°C, adjust the temperature of the soap solution to 50°C, and mix the two to obtain a no...

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