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A rapid repair method for asphalt pavement cracks

An asphalt pavement, fast technology, applied in the direction of roads, roads, pavement details, etc., can solve the problems of difficult compaction or compaction of the mixture, unable to stop the upward propagation of cracks, and unable to achieve the repair effect, so as to reduce the amount of excavation and repair works. , Prevent moisture from penetrating into the pavement structure, and the effect of dense and complete connection

Inactive Publication Date: 2016-08-17
SHANDONG TRANSPORTATION INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the groove width is too large, the damage to the original pavement structure will be increased and weak parts will be formed; if the groove width is too small, it will be difficult to compact or tamp the backfilled mixture, and it will not be able to prevent the cracks from spreading upwards, and the repair effect will not be achieved

Method used

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  • A rapid repair method for asphalt pavement cracks
  • A rapid repair method for asphalt pavement cracks
  • A rapid repair method for asphalt pavement cracks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] Take the treatment of transverse cracks on a roadway as an example.

[0024] Determine the depth of the groove according to the width of the crack:

[0025] Assuming that the crack width is ≤3mm and the groove depth is the thickness of the surface layer asphalt mixture 1 (assumed to be 5cm), then the depth a of the V-shaped groove 5 is 5cm, and the opening width b of the V-shaped groove 5 is 5cm (as shown in the attached figure 1 described);

[0026] Assuming that the crack width is >3mm and figure 2 described);

[0027] Assuming that the crack width is ≥ 5mm, and the groove depth is the total thickness of the asphalt layer (assumed to be 18cm), then the V-shaped groove depth is 18cm, and the V-shaped groove opening width is 18cm (as attached image 3 described).

[0028] Adjust the slotting machine so that the slot size conforms to the above-mentioned slotting size, refer to the crack tracker, drag the slotting machine by hand to slot along the crack, and blow the ...

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Abstract

The invention discloses an asphalt pavement crack quick repairing method, belonging to the field of road engineering. The method is characterized in that a V-shaped slot with a certain specification is formed along an asphalt pavement crack, a slot wall is coated with modified emulsified asphalt, and the slot is backfilled and compacted with a fine-grain embedded extrusion type asphalt mixture. Compared with the prior art, the repairing method disclosed by the invention has the characteristics of simplicity in operation, low influence on pavement structures on two sides of the crack, high repairing speed, no influence on traffic, economy and the like, has perfect values in popularization and application, and can be widely applied to the repair of asphalt pavements.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a quick repair method for asphalt pavement cracks. Background technique [0002] Cracks have become one of the most important early diseases of asphalt pavement, which seriously endangers the performance and service life of asphalt pavement. However, the existing crack repair methods are mainly limited to cutting and glueing, that is, cutting U-shaped joints and pouring hot asphalt , After sealing the cracks, prevent moisture from entering the interior of the pavement structure along the cracks. However, the low strength of the potting material cannot prevent the opening cracks from spreading upward under the action of the load, and the joint potting material cannot effectively bond the pavement structure on both sides of the crack due to the external environment, and the cracks will be re-formed quickly under the action of the traffic load. The joint glue falls off and needs to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C11/02C04B26/26
Inventor 韦金城赵海生袁世刚尚光明王晓燕付建村余四新孙强胡家波王林程钰胡宗文刘峻青王繁兴姜世波刘景宝高志民盛明乾
Owner SHANDONG TRANSPORTATION INST
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