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Rapid repairing method for asphalt pavement

A fast technology for asphalt pavement, applied in the direction of roads, roads, pavement details, etc., can solve the problems of not being able to enhance the strength of the newly repaired pavement, and not considering reflection cracks, etc., to achieve the purpose of enhancing the strength of the newly repaired road surface, avoiding reflection cracks, and fast operation Effect

Pending Publication Date: 2021-04-16
安徽交控工程集团有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method cannot enhance the strength of the newly repaired pavement, and does not consider the problem of reflective cracks, so there is room for improvement

Method used

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  • Rapid repairing method for asphalt pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Take the treatment of transverse cracks on a roadway as an example.

[0073] Determine the depth and width of the groove according to the width of the crack:

[0074] Crack width ≤ 3mm, groove depth is the thickness of the asphalt mixture in the surface layer, that is, 5cm, then the depth of the repair groove is 5cm, the opening width of the repair groove is 5cm, and the repair groove is V-shaped.

[0075] Adjust the slotting machine so that the depth of the repaired groove is 5cm, and the opening width of the repaired groove is 5cm. Referring to the crack tracker, drag the slotting machine by hand to slot along the crack. After the slotting is completed, blow the crack with a blower to form a repair. groove.

[0076] The modified emulsified asphalt is SBS modified emulsified asphalt, and the amount of SBS modified emulsified asphalt is about 0.5kg / m 2 , and evenly apply it on the blown slot to repair the side wall of the slot, and use sand frying equipment to mix the...

Embodiment 2

[0083] Take the treatment of transverse cracks on a roadway as an example.

[0084] The pavement reinforcement mesh is figure 1 The pavement reinforced mesh shown, wherein the pavement reinforced mesh includes a hexagonal double-stranded steel mesh with a mesh design specification of 40×50mm and steel bars fixed on the hexagonal double-stranded metal mesh; The diameter of the steel wire of the hexagonal twisted metal mesh is 2.4mm; the diameter of the steel bar is 4.4mm.

[0085] Determine the depth of the groove and the width of the reinforced mesh according to the width of the crack:

[0086] Crack width > 3mm and < 5mm, the groove depth is the thickness of the upper layer asphalt mixture (5cm) and the middle layer asphalt mixture (6cm), which is 11cm, then the depth of the repair groove is 11cm, and the opening width of the repair groove is 11cm, The width of the reinforced mesh is 6cm, and it is laid between the surface layer and the middle surface layer, and the repair...

Embodiment 3

[0097] Take the treatment of transverse cracks on a roadway as an example.

[0098] The pavement reinforcement mesh is figure 1 The pavement reinforced mesh shown, wherein the pavement reinforced mesh includes a hexagonal double-stranded steel mesh with a mesh design specification of 40×50mm and steel bars fixed on the hexagonal double-stranded metal mesh; The diameter of the steel wire of the hexagonal twisted metal mesh is 2.4mm; the diameter of the steel bar is 4.4mm.

[0099] Determine the depth of the groove and the width of the reinforced mesh according to the width of the crack:

[0100] Crack width ≥ 5mm, groove depth is the total thickness of the asphalt layer, which is 18cm, then the depth of the repair groove is 18cm, the opening width of the repair groove is 18cm, and the width of the reinforced mesh is 7cm, which is laid between the middle surface layer and the lower layer. The repair groove is V-shaped. Wherein, the thickness of the upper layer of the asphalt...

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Abstract

The invention provides a rapid repairing method of an asphalt pavement. The method comprises the following steps: carrying out opening along a crack of the asphalt pavement to obtain a repairing groove, wherein the width of the opening position of the repairing groove is greater than or equal to the width of the crack, and the depth of the repairing groove is greater than or equal to the width of the crack; coating the side wall of the repairing groove with modified emulsified asphalt; and filling the repairing groove with an asphalt mixture to form an asphalt layer, wherein when the depth of the repairing groove is larger than 3 mm, the asphalt layer includes two or more layers of layered structures, and a road surface reinforced net is arranged between at least two layers of layered structures. The method is combined with a road surface reinforced net laying technology, existing cracks can be well repaired, the strength of a newly-repaired pavement can be enhanced, and reflection cracks can be basically avoided.

Description

technical field [0001] The invention relates to a quick repair method for asphalt pavement, which belongs to the field of road engineering. Background technique [0002] Reflective cracking is one of the most important diseases of asphalt pavement, which seriously affects the performance of asphalt pavement. As the reflective cracks propagate, the performance of the asphalt pavement gradually decreases, and the reflective cracks must be repaired. Existing crack repairing methods are mainly crack filling, grouting, sealing and overlay repairing. The repair effect of grouting repair is poor, and it cannot effectively prevent the original cracks from cracking; the grouting method is mainly aimed at the repair of longitudinal cracks; the sealing and overlay repair methods are mainly used for large-scale repairs in areas where cracks and cracks are concentrated. Therefore, the existing crack repair methods cannot effectively address the problem of reflective cracks on the pavem...

Claims

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Application Information

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IPC IPC(8): E01C11/00E01C11/02E01C11/16E01C7/18
Inventor 胡红雨尚光明李亚非郭蒙蒙马前程陈群惠嘉王辉朱然邢雪松徐向军刘佳佳
Owner 安徽交控工程集团有限公司
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