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Method utilizing geotextiles to dispose pavement reflection cracks

A technology of reflecting cracks and geotextiles, which is applied in the field of road and bridge engineering, can solve the problems of high cost and achieve the effects of comprehensive cost reduction, relief of road cracks, and simple operation

Inactive Publication Date: 2011-05-25
SHANXI ROAD & BRIDGE CONSTR GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both methods are costly

Method used

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Embodiment Construction

[0016] When laying, manual laying is adopted, and fixing is the key. For roads with many cracks, block paving and full paving are used for treatment. First, the sticky layer oil is sprayed. Then fix the remaining three sides. Fix the nails with shooting nails, the length of the nails is 8-10cm, the gasket can be iron strips with a thickness of 1mm and a width of 3cm, and the distance between the nails is 30-50cm. If necessary, tighten the nail distance until it is completely fixed.

[0017] The horizontal and vertical lap widths of geotextiles are both 4-5cm. If the lap is too wide, the interlayer at the lap will be thicker, and the bonding force between the surface layer and the overlay layer will be weakened, which will easily lead to adverse effects such as drumming, detachment, and displacement of the overlay layer. , so the excessively wide part of the overlap should be cut off. Wrinkles of the geotextile should be avoided as much as possible. If there are wrinkles duri...

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Abstract

A method utilizing geotextiles to dispose pavement reflection cracks aims to be simple to operate, have low cost and quick construction speed. The method disclosed by the invention is that: tack coat is firstly sprayed after the pavement is cleaned, the sprayed amount of the tack coat is 0.6-0.7kg / m2, and the longitudinal and lateral scopes of the sprayed tack coat are wider than a geotextile by 5-10cm; the tack coat is hot asphalt or emulsified asphalt; when the geotextiles are laid, the coarse side of each geotextile is arranged upwards, the geotextile is tensioned, and is flatly, straightly and closely laid on the pavement forwards; according to the laying direction, one end of the posterior geotextile is pressed by one end of the anterior geotextile, and the two ends are well bonded by the tack coat; both the longitudinal and the lateral overlapping sizes of each geotextile are 4-5cm; after the geotextiles are fixed, the tack coat is sprayed for the second time, and a layer of stone chips is uniformly scattered on the pavement; and hot mix asphalt is laid and compressed to form.

Description

technical field [0001] The invention relates to a construction method for treating road surface cracks with a geotextile, which belongs to the field of road and bridge engineering. Background technique [0002] Rural roads in my country are characterized by low road grades, simple pavement structure, insufficient maintenance funds, many old roads that are overdue, and serious pavement aging. The newly built asphalt pavement base has many water-stable structures, and reflective cracks are common on the asphalt pavement. When these roads are rebuilt into cement pavements, there are not many new subbases, and the concrete panels are almost directly placed on the top surface of the old roads, resulting in more cracks. Facing the maintenance and treatment of pavement cracks and diseases, the common methods at present are: first, use sealant to repair the cracks, use a special slotting machine to pull the cracks into small grooves of a certain width and depth, and then use a seam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C23/06
Inventor 李彦李玉峰苏国森
Owner SHANXI ROAD & BRIDGE CONSTR GROUP
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