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Road pavement maintenance construction method

A construction method and road surface technology, applied in the field of road construction, can solve the problems of early damage, the effective service time fails to reach the designed service life, etc., and achieves strong resistance to water damage, short maintenance and construction time, and good anti-seepage performance of the road surface. Effect

Inactive Publication Date: 2018-06-19
ANHUI XINRUI HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The effective service time of existing expressways generally fails to reach its design service life, and serious early damage often occurs within 3 years of its opening to traffic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A road pavement maintenance construction method, it comprises the steps:

[0019] (1) Construction personnel inspect the road surface and record the damaged location and damage condition of the road surface;

[0020] (2) Mill the damaged pavement to form milling grooves, and remove loose cornerstones around them. The depth of the milling grooves reaches 15-22mm, and then clean the milling grooves;

[0021] (3) Heat the damaged part of the pavement to 180°C-200°C with microwaves, so that the moisture and air in the cracks inside the milling groove overflow, and fully dry the pavement with a steam pressure pump;

[0022] (4) Use needle injection sealant to block the internal cracks of the milling groove. After 3-4 hours, under the condition of maintaining 1750℃~190℃, spray 1.6~1.7kg / ㎡ on the surface of the milling groove evenly Lay SBS modified asphalt to make the surface wet without obvious liquid accumulation, and let it stand for 6-7 hours;

[0023] (5) Pave asphalt ...

Embodiment 2

[0026] A road pavement maintenance construction method, it comprises the steps:

[0027] (1) Construction personnel inspect the road surface and record the damaged location and damage condition of the road surface;

[0028] (2) Mill the damaged pavement to form milling grooves, and remove loose cornerstones around them. The depth of the milling grooves reaches 15-22mm, and then clean the milling grooves;

[0029] (3) Heat the damaged part of the pavement to 180°C-200°C with microwaves, so that the moisture and air in the cracks inside the milling groove overflow, and fully dry the pavement with a steam pressure pump;

[0030] (4) Use needle injection sealant to block the internal cracks of the milling groove. After 3-4 hours, under the condition of maintaining 1750℃~190℃, spread SBS evenly on the surface of the milling groove with a spraying amount of 1.6kg / ㎡ Modified asphalt to make the surface wet without obvious liquid accumulation, let stand for 6-7 hours;

[0031] (5) P...

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Abstract

The invention discloses a road pavement maintenance construction method. The method includes the following steps that (1) a pavement is checked by a constructor, and damaged places and the damage condition of the pavement are recorded; (2) the damaged pavement is milled and planed to form milled and planed grooves, surrounding loose footstones are shoveled away, the depth of each milled and planedgroove ranges from 15 mm to 22 mm, and then the milled and planed grooves are cleaned; (3) the damaged places of the pavement are heated to 180 DEG C to 200 DEG C through microwaves, moisture and airin cracks in the milled and planed grooves overflow, and the pavement is fully dried through a steam pressure pump; (4) the cracks in the milled and planed grooves are plugged through needle-injectedsealant; (5) the surfaces of the milled and planed grooves are paved with bituminous concrete at a constant speed, the pavement is leveled and compacted in a vibrating compacting or static pressure compacting mode, and therefore the first-layer pavement is obtained. The road pavement maintenance construction method has the beneficial effects of being short in maintenance construction time, good in pavement anti-seepage performance, high in pavement levelness and the like.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a road surface maintenance construction method. Background technique [0002] my country's expressway network has been basically completed now, and will soon enter the maintenance period in an all-round way. Like new construction, expressway maintenance requires a whole set of advanced science and technology. With the rapid and coordinated development of the national economy, the road traffic volume in our country is increasing day by day, and the vehicles are rapidly enlarged and seriously overloaded, which makes the road surface face a severe test. The effective service time of existing expressways generally fails to reach its design service life, and serious early damage often occurs within 3 years of its opening to traffic. In the current situation of serious shortage of highway construction and maintenance funds, it is of great practical significance to study the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/18C04B28/04
CPCE01C7/187C04B28/04C04B2111/0075C04B14/00C04B24/36C04B14/02C04B18/12C04B2103/0068
Inventor 桂新辉
Owner ANHUI XINRUI HEAVY IND
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