A construction method and equipment for asphalt concrete pavement of municipal roads

A technology of asphalt concrete and construction method, applied in roads, roads, road repair and other directions, can solve problems such as shortening the service life of pavement, and achieve the effect of reducing difficulty, ensuring durability and continuity, and reducing the degree of loosening and deformation.

Active Publication Date: 2020-08-18
国诚集团有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the characteristics of asphalt itself, when the temperature exceeds 160°C, its aging rate will increase by almost 1 times for every 10°C increase in its own temperature. If the temperature of asphalt is raised too high, it will accelerate its aging, resulting in the service life of the pavement after construction. Greatly reduced

Method used

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  • A construction method and equipment for asphalt concrete pavement of municipal roads
  • A construction method and equipment for asphalt concrete pavement of municipal roads
  • A construction method and equipment for asphalt concrete pavement of municipal roads

Examples

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Embodiment 1

[0023] The municipal road asphalt concrete pavement construction method provided in this embodiment includes: laying a concrete bearing layer on the subgrade surface, stirring and mixing coarse aggregate, fine aggregate and mineral powder according to the mass ratio of 5:45:71, stirring There is no limit to the location. After mixing evenly, the mixture is obtained. The mixture is transported to the laying site, and the mixture and asphalt are added to the mobile mixing equipment on site. The mass ratio of mixture to asphalt is 1:6, and the mixing temperature is controlled. The temperature is 180°C, and the mixing time is 5 minutes. After the mixture and asphalt are mixed evenly, the asphalt binder is obtained, and the asphalt binder is spread on the concrete bearing surface. Due to the short discharge time, the discharge temperature of the asphalt binder is 130 At about ℃, at least two filling and leveling procedures are carried out on the spread asphalt mixture, so that it is...

Embodiment 2

[0025] The municipal road asphalt concrete pavement construction method provided in this embodiment includes: laying a concrete bearing layer on the subgrade surface, stirring and mixing coarse aggregate, fine aggregate and mineral powder according to the mass ratio of 10:52:82, stirring There are no restrictions on the location. After mixing evenly, the mixture is obtained. The mixture is transported to the laying site, and the mixture and asphalt are added to the mobile mixing equipment on site. The mass ratio of mixture to asphalt is 1:15, and the mixing temperature is controlled. The temperature is 150°C, and the mixing time is 20 minutes. After the mixture and asphalt are mixed evenly, the asphalt binder is obtained, and the asphalt binder is spread on the concrete bearing surface. Due to the short discharge time, the discharge temperature of the asphalt binder is 120 At about ℃, at least two filling and leveling procedures are carried out on the spread asphalt mixture, so...

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Abstract

The invention discloses a construction method and a construction apparatus for a municipal road asphalt concrete pavement. The construction apparatus mainly comprises a truck tractor and a laying device connected with the truck tractor, the truck tractor comprises a traction chassis and a cab mounted on the traction chassis, the laying device comprises a front frame, a stirring mechanism, a flattening mechanism and a connecting mechanism, the connecting mechanism is mounted between the front frame and the traction chassis, the stirring mechanism is mounted on at the front side of the upper surface of the front frame, the middle part of the front frame is provided with a material leakage opening, the discharge channel of a stirring tank is located above the material leakage opening, at least two filling mechanisms are mounted in the material leakage opening, and the flattening mechanism is mounted at the rear side of the front frame. The method makes laying construction immediately carried out after onsite stirring of asphalt, so small heat loss of the asphalt is ensured, and the pavement quality after the completion of the construction is ensured.

Description

technical field [0001] The invention relates to the technical field of municipal road construction, in particular to a municipal road asphalt concrete pavement construction method and equipment. Background technique [0002] At present, most of the municipal road construction in my country is hot-mix asphalt concrete pavement. The asphalt binder is mixed in the designated mixing base station, and then transported to the laying site for road construction. Due to the rapid temperature loss of the asphalt binder during the transportation process, the subsequent paving, leveling and compaction processes are more difficult to construct, and the quality of the pavement after construction cannot meet the requirements. The existing solution is to increase the discharge temperature of the asphalt binder or add warm mixing agent, and calculate the approximate heat loss according to the transportation distance, so that the temperature of the asphalt binder transported to the laying sit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C19/47E01C19/48
CPCE01C19/47E01C19/4873
Inventor 赵清贾汝成涂文博常光明安培培
Owner 国诚集团有限公司
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