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A construction method of municipal asphalt concrete pavement

A technology of asphalt concrete and construction method, which is applied to cohesive pavement paved on site, roads, roads, etc., which can solve the problems of easy formation of rutting, reduction of road surface strength and deformation resistance, and prolong service life and improve anti-rutting Ability, combined with good effect

Active Publication Date: 2021-12-21
广东一业建设股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Asphalt is a flexible pavement, which can effectively improve driving comfort. However, due to the viscoelastic characteristics of asphalt materials, the strength and rheological properties of the road asphalt concrete pavement structural layer are greatly affected by temperature changes. The anti-deformation ability is reduced, and it is easy to form ruts under vertical or horizontal loads such as vehicle starting, acceleration, deceleration, and braking. Therefore, there is still room for improvement

Method used

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  • A construction method of municipal asphalt concrete pavement
  • A construction method of municipal asphalt concrete pavement
  • A construction method of municipal asphalt concrete pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] A kind of concrete slurry, the preparation method of concrete slurry is as follows:

[0089] a. Add 90kg of water, 100kg of Portland cement, and 11kg of water reducer to the stirring tank at a speed of 80r / min, and stir for 5min to form cement slurry;

[0090] b. Add 3kg of hexaphenylbenzene, 30kg of glass fiber, and 10kg of silane coupling agent to the cement slurry at a speed of 70r / min and stir for 8min to form a premix;

[0091] c. Add 300kg of fine aggregate and 200kg of nano-filler to the premix, and stir at a speed of 45r / min for 15 minutes to form a concrete slurry at a speed of 20r / min.

[0092] In this embodiment, the nano filler is nano silicon dioxide.

[0093] The length of the glass fiber in this embodiment is 0.5 mm.

Embodiment 2

[0095] A kind of concrete slurry, the preparation method of concrete slurry is as follows:

[0096] a. Add 100kg of water, 100kg of Portland cement, and 10kg of water reducing agent into the stirring tank at a speed of 80r / min, and stir for 5min to form cement slurry;

[0097] b. Add 4kg of hexaphenylbenzene, 37.5kg of glass fiber, and 11kg of silane coupling agent to the cement slurry at a speed of 70r / min and stir for 8min to form a premix;

[0098] c. Add 350kg of fine aggregate and 225kg of nano-filler to the premix, and stir at a speed of 45r / min for 15 minutes to form a concrete slurry at a speed of 20r / min.

[0099] In this embodiment, the nano filler is nano silicon dioxide.

[0100] The length of the glass fiber in this embodiment is 0.75 mm.

Embodiment 3

[0102] A kind of concrete slurry, the preparation method of concrete slurry is as follows:

[0103] a. Add 110kg of water, 100kg of Portland cement, and 9kg of water reducer to the stirring tank at a speed of 80r / min, and stir for 5min to form cement slurry;

[0104] b. Add 5kg of hexaphenylbenzene, 45kg of glass fiber, and 12kg of silane coupling agent into the cement slurry, and stir for 8min at a rotating speed of 70r / min to form a premix;

[0105] c. Add 400kg of fine aggregate and 250kg of nano-filler to the premix, and stir at a speed of 45r / min for 15 minutes to form a concrete slurry at a speed of 20r / min, and continue to stir until it is used up.

[0106] In this embodiment, the nano filler is nano silicon dioxide.

[0107] The length of the glass fiber in this embodiment is 1 mm.

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Abstract

The present invention relates to the field of road surface construction. Aiming at the problem that rutting is easy to form, a municipal asphalt concrete road surface construction method is provided. The technical scheme is as follows: including: S1. foundation pit excavation; S2. laying base; S3. laying cushion; S4. Laying the surface layer, including: S41. Laying the first asphalt layer; S42. Laying the second asphalt layer; S43. Pouring the concrete layer; the concrete layer is formed by pouring concrete grout; the concrete grout includes: 100 parts of Portland cement; 300-400 parts of fine aggregate; 200-250 parts of nano filler; 90-110 parts of water; 3-5 parts of hexaphenylbenzene; 30-45 parts of glass fiber; 10-12 parts of silane coupling agent; The length of the fibers is 0.5‑1 mm. By laying the first asphalt layer and the second asphalt layer and pouring the concrete layer, the surface layer forms an asphalt concrete structure, and the rigidity of the concrete is used to reinforce the asphalt, so that the surface layer is "soft but rigid", and the effect of anti-rutting is better. The municipal asphalt concrete pavement is not easy to produce rutting, which prolongs the service life of the municipal asphalt concrete pavement.

Description

technical field [0001] The invention relates to the field of pavement construction, in particular to a construction method of municipal asphalt concrete pavement. Background technique [0002] Asphalt concrete pavement is a typical pavement in current road construction. [0003] Asphalt is a flexible pavement, which can effectively improve the driving comfort. However, due to the viscoelastic characteristics of the asphalt material, the strength and rheological properties of the road asphalt concrete pavement structure layer are greatly affected by temperature changes. The anti-deformation ability is reduced, and ruts are easily formed under vertical or horizontal loads such as vehicle starting, acceleration, deceleration, braking, etc. Therefore, there is still room for improvement. SUMMARY OF THE INVENTION [0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a construction method for municipal asphalt concrete pavemen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04E01C7/32C04B26/26
CPCE01C7/32C04B28/04C04B26/26C04B22/002C04B2103/302C04B24/00C04B14/42C04B24/42C04B14/062C04B14/068C04B14/042C04B18/025C04B14/046C04B14/386C04B14/02
Inventor 林才波姚佑明李成望欧平海陈超明
Owner 广东一业建设股份有限公司
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