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Municipal asphalt concrete pavement construction method

A technology of asphalt concrete and construction method, which can be applied to cohesive pavement paved on site, roads, roads, etc., which can solve the problems of easy formation of ruts, reduction of road surface strength and deformation resistance, and achieve less cracking and improved rutting resistance , the effect of not easy rutting

Active Publication Date: 2020-01-10
广东一业建设股份有限公司
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  • 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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  • Municipal asphalt concrete pavement construction method
  • Municipal asphalt concrete pavement construction method
  • Municipal asphalt concrete pavement construction method

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 0.5mm.

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 0.75mm.

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 1mm.

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Abstract

The invention relates to the field of pavement construction, and provides a municipal asphalt concrete pavement construction method aiming at the problem of easy formation of ruts. The municipal asphalt concrete pavement construction method comprises following steps: S1, excavating a foundation pit; S2, laying a base layer; S3, laying a cushion layer; S4, paving a surface layer, wherein the step S4 comprises following steps: S41, paving a first asphalt layer; S42, paving a second asphalt layer; and S43, pouring a concrete layer. The concrete layer is formed by pouring a concrete slurry; the concrete slurry comprises: 100 parts of Portland cement; 300 to 400 parts of fine aggregate; 200 to 250 parts of a nanometer filling material; 90 to 110 parts of water; 3 to 5 parts of hexaphenylbenzene; 30 to 45 parts of glass fiber; 10 to 12 parts of a silane coupling agent; and the length of the glass fiber is 0.5-1 mm. The concrete layer is poured after the first asphalt layer and the second asphalt layer are laid, so that an asphalt concrete structure is formed on the surface layer, the rigidity of concrete is used for reinforcing asphalt, the surface layer is soft and rigid, the anti-ruteffect is good, ruts are not prone to being generated on the municipal asphalt concrete pavement, and the service life of the municipal asphalt concrete pavement is prolonged.

Description

technical field [0001] The invention relates to the field of road surface construction, in particular to a municipal asphalt concrete road surface construction method. Background technique [0002] Asphalt concrete pavement is a typical pavement in road construction at present. [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. Contents of the invention [0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a municipal asphalt concrete road surface construction me...

Claims

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Application Information

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Patent Type & Authority Applications(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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