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Asphalt concrete pavement construction method

A kind of asphalt concrete and construction method technology, which is applied to the cohesive pavement paved on site, roads, roads, etc., can solve the problems that concrete structures are prone to frost cracking, serious car accidents, and vehicles are prone to rollovers, etc., to achieve Reduce the possibility of vehicle rollover, strong anti-freeze cracking ability, and improve the effect of anti-freezing performance

Active Publication Date: 2020-04-07
广州芳建工程建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: since the concrete structure is prone to freeze cracks at low temperatures, when the asphalt concrete road is used for high-grade highways such as expressways, once freeze cracks occur in cold regions, the road surface will be uneven. Unevenness makes high-speed vehicles prone to rollover and serious accidents. Therefore, there is still room for improvement

Method used

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  • Asphalt concrete pavement construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] refer to figure 1 , is a kind of frost-resistant concrete slurry disclosed by the present invention, and the preparation method of frost-resistant concrete slurry is as follows:

[0075] S01. Add 100kg of Portland cement, 90kg of water, and 11kg of water reducing agent into the stirring tank at a speed of 80r / min, and stir for 3min to form cement slurry.

[0076] S02. Add 200kg of talcum powder into the cement slurry, rotate at a speed of 60r / min, and stir for 5min to form an initial mixture.

[0077] S03. Add 10 kg of polyphenylmethylsiloxane and 3 kg of benzophenone dimethyl ketal to the primary mixture, and stir for 6 minutes at a rotational speed of 60 r / min to form a premix.

[0078] S04. Add 300kg of powder filler to the premix, rotate at a speed of 45r / min, and stir for 10 minutes to form a frost-resistant concrete slurry, at a speed of 20r / min, and continue to stir until it is used up.

[0079] The powder filler is composed of raw materials in the following ma...

Embodiment 2

[0082] refer to figure 1 , is a kind of frost-resistant concrete slurry disclosed by the present invention, and the preparation method of frost-resistant concrete slurry is as follows:

[0083] S01. Add 100kg of Portland cement, 100kg of water, and 10kg of water reducing agent into the stirring tank at a speed of 80r / min, and stir for 3min to form a cement slurry.

[0084] S02. Add 225kg of talcum powder into the cement slurry, rotate at a speed of 60r / min, and stir for 5min to form an initial mixture.

[0085] S03. Add 11 kg of polyphenylmethylsiloxane and 4 kg of benzophenone dimethyl ketal to the primary mixture, and stir for 6 minutes at a rotational speed of 60 r / min to form a premix.

[0086] S04. Add 325kg of powder filler to the premix, rotate at a speed of 45r / min, and stir for 10 minutes to form a frost-resistant concrete slurry, at a speed of 20r / min, continue to stir until it is used up.

[0087] The powder filler is composed of raw materials in the following mas...

Embodiment 3

[0090] refer to figure 1 , is a kind of frost-resistant concrete slurry disclosed by the present invention, and the preparation method of frost-resistant concrete slurry is as follows:

[0091] S01. Add 100kg of Portland cement, 110kg of water, and 9kg of water reducing agent into the stirring tank at a speed of 80r / min, and stir for 3min to form cement slurry.

[0092] S02. Add 250kg of talcum powder into the cement slurry, rotate at a speed of 60r / min, and stir for 5min to form an initial mixture.

[0093] S03. Add 12 kg of polyphenylmethylsiloxane and 5 kg of benzophenone dimethyl ketal to the primary mixture, and stir for 6 minutes at a rotational speed of 60 r / min to form a premix.

[0094] S04. Add 350kg of powder filler to the premix, rotate at a speed of 45r / min, and stir for 10 minutes to form a frost-resistant concrete slurry, at a speed of 20r / min, and continue to stir until it is used up.

[0095] The powder filler is composed of raw materials in the following ma...

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Abstract

The invention relates to the technical field of pavement construction, in particular to an asphalt concrete pavement construction method which comprises the following steps: S1, excavating a groove; S2, laying a base layer; S3, laying a cushion layer; S4, backfilling soil with the thickness of 3-5 mm and compacting the soil to form a transition layer; S5, paving a first asphalt surface layer; S6,paving a second asphalt surface layer; S7, pouring a concrete surface layer; forming the concrete surface layer by pouring anti-freezing concrete slurry; wherein the anti-freezing concrete slurry comprises the following components in parts by mass: 100 parts of Portland cement; 200-250 parts of talcum powder; 300-350 parts of powder filler; 10-12 parts of polyphenyl methyl siloxane; 3-5 parts ofbenzophenone dimethyl ketal; and 90-110 parts of water. The a invention has the effects that the anti-freezing capacity of the concrete surface layer is high, a pavement is not prone to damage due tofreezing, the possibility of rollover of vehicles running at high speed due to pavement cracking is reduced, the pavement is safe and reliable, and applicability of the pavement construction method iswide.

Description

technical field [0001] The invention relates to the technical field of road surface construction, in particular to an asphalt concrete road surface construction method. Background technique [0002] At present, as vehicles become more and more popular, the demand for roads is also increasing, and the requirements for road quality are also getting higher and higher. [0003] During the construction of the existing asphalt concrete pavement, the asphalt surface layer is usually laid first and then the concrete slurry is poured, so that the concrete structure and the asphalt structure are combined, so that the asphalt concrete pavement has better elasticity, improves driving comfort, and the road surface is smooth and smooth. Suitable for high-speed driving, making asphalt concrete roads suitable for high-grade highways. [0004] The above-mentioned existing technical solutions have the following defects: since the concrete structure is prone to freeze cracks at low temperatur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32C04B28/04
CPCC04B28/04E01C7/32C04B20/002C04B2103/302C04B14/042C04B24/42C04B24/30C04B14/048C04B14/14C04B14/046C04B14/26C04B14/28C04B24/008C04B14/42
Inventor 陈荣志彭亮
Owner 广州芳建工程建设集团有限公司
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