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Method for quickly repairing cavity disease of cement concrete pavement

A technology of cement concrete and hollowing out, which is applied to cohesive pavement paved on site, roads, roads, etc. It can solve the problems of inaccurate analysis of disease causes, long maintenance period, and difficult construction, and achieve fast and simple construction Convenience and the effect of improving the service life

Inactive Publication Date: 2013-01-23
SHANXI LUZHONG ROAD & BRIDGE CO LTD
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AI Technical Summary

Problems solved by technology

The disadvantages of the traditional process of void repair on cement concrete pavement are inaccurate analysis of disease causes, difficult construction, long maintenance period and high cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] (1) Use the drop weight deflection meter (model FWD) and ground penetrating radar (IDS in Italy) to judge the void position at the corner position of the panel block and the center position of the panel block on the cement concrete pavement, and determine whether it is based on the detected data. There is a panel void phenomenon and accurately locate the void position of the panel block.

[0016] (2) Arrange grouting holes on the cement concrete pavement panel block. The number of grouting holes depends on the plane size of the cement concrete pavement panel block. On a 4m×5m standard cement concrete pavement panel block, the number of grouting holes is 5; on cement concrete pavement panels larger than the standard panel size or on the side of the road shoulder, the number of grouting holes is increased to 8; the positions of the grouting holes are arranged in a plum blossom shape, and the distance between the grouting holes and the edge of the panel block is controlled ...

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PUM

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Abstract

The invention discloses a method for quickly repairing a cavity disease of a cement concrete pavement, which aims to achieve low cost, quick repairing speed and good effect. The method provided by the invention comprises the following steps: judging the cavity position at a plate angle position and a plate block center position of a cement concrete pavement by using a falling weight deflectometer and a ground penetrating radar; arranging injected holes on the plate block of the cement concrete pavement, wherein the injected slurry adopts a cement coal ash composite material; absorbing injected slurry from a stirring machine by using an injecting pump; then injecting the slurry to the cavity position of the cement concrete pavement after being pumped by a high pressure rubber pipe; after finishing the injection, maintaining the cement concrete pavement for 4-6 hours; blocking the injected hole by using mortar; and after statically placing for 8-12 hours, polishing the part higher than the pavement until the part higher than the pavement is kept flat as the original pavement.

Description

technical field [0001] The invention relates to a method for quickly repairing the void defect at the bottom of a cement concrete road slab. Background technique [0002] With the rapid development of the national economy, the road traffic volume has increased sharply, the axle load of automobiles has become increasingly heavy, and due to reasons such as design, construction, maintenance, and natural factors, most cement concrete pavements have been damaged to varying degrees. It is an effective repair measure to adopt grouting back cover after voiding, but this should be based on accurately judging the voiding condition. If there is no void under the pavement panel, the grouting back cover not only wastes manpower and material resources, but actually causes damage to the pavement. Therefore, it is extremely important to take timely and effective repair measures to prevent the development of such structural damage if the cement concrete pavement in use can detect whether th...

Claims

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Application Information

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IPC IPC(8): E01C7/14C04B28/04C04B111/72
Inventor 张宇孟学文王晓波宁卫华祁英奎郭乐智艳军郭志先
Owner SHANXI LUZHONG ROAD & BRIDGE CO LTD
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