Asphalt road surface local damage immediate fast repairing method

A technology for asphalt pavement and damage, which is applied in the direction of road repair, road, road, etc. It can solve the problems of difficult repair quality, difficult control of composition, and large modulus difference, so as to reduce on-site repair process, shorten repair time and reduce construction cost Effect

Inactive Publication Date: 2008-09-10
CHANGAN UNIV
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  • Abstract
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Problems solved by technology

[0008] The main problems are: because it is also mixed on site, the composition is not easy to control, and the performance of asphalt mixture is mainly determined by the constituent materials, so the repair quality is difficult to control; because the amount of repair material is determined by experience, the density is low, and the repair quality It is not easy to guarantee, but requires a professional construction team to complete
[0009] Since the above maintenance methods are all on-site mixing, it is difficult to guarantee the quality of repair materials for asphalt mixtures with strict requirements on the composition of the mixture; in addition, more construction machinery is required for on-site mixing, resulting in long-term closed traffic, affecting driving safety and traffic Ability; large modulus difference between new and old materials, and poor interface bonding are also factors that cause poor repair effects

Method used

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  • Asphalt road surface local damage immediate fast repairing method
  • Asphalt road surface local damage immediate fast repairing method
  • Asphalt road surface local damage immediate fast repairing method

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Embodiment Construction

[0036] The principle of prestress generation technology

[0037] Due to the pre-camber (f) set by the prefabricated specimen, under the action of the driving load, the gap (Δa) between the component and the cutting edge is compactly filled, the contact between the component and the cutting edge produces an arch effect, and the cutting edge produces a reverse force on the component , constraining the limiting member to generate the interface between the prestressed bonded prefabricated specimen and the cutting edge. The pre-camber design of prefabricated specimens ensures the overall performance between the repair material and the old pavement, and prefabricated specimens of different specifications adopt different pre-camber f ( f = 12 h × Δa a ) , Where Δa is the maximum value of the difference between the two side ...

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Abstract

The present invention discloses a method for quickly-repairing local damaged asphalt pavement. Said method includes the following several steps: firstly, defining prefabricated test piece size; according to the damaged size of pavement and combining it with prefabricated test piece size to define the size of pit channel cut in-place; on the basis of prefabricated test piece size defining precamber f=12hx(delta a / a) of prefabricated test piece; utilizing existent wheel-rolling process to form prefabricated test piece; finally making in-place repairing operation.

Description

technical field [0001] The invention belongs to a highway pavement repair method, in particular to a timely and rapid repair method for local damage of asphalt pavement. Background technique [0002] At home and abroad, hot mix and cold patch asphalt mixtures are often used to repair asphalt pavement. The method is: [0003] Measure 1, hot mix repair asphalt mixture: [0004] Cut and remove the damaged asphalt mixture on site, estimate the total amount of material taken according to the damaged volume, pour the asphalt mixture mixed on site into the pit, use small-scale mechanical rolling or tamping, and open the traffic after the asphalt mixture drops to normal temperature . [0005] This method is a common maintenance measure, and the existing problems mainly include: the quality of the repaired mixture is difficult to control because there is no special mixing equipment for mixing; because it needs to be compacted or compacted by small machines, it takes up a lot of lan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C23/06
Inventor 李炜光张东青邹小琳肖世品
Owner CHANGAN UNIV
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