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Method for rapid treatment of damage of cavity beneath cement concrete pavement slab

A cement concrete road and cement concrete technology, which is applied in the field of rapidly treating the voiding disease at the bottom of the cement concrete pavement, can solve the problems of inaccurate analysis of the cause of the disease, difficult construction, long maintenance period, etc., and achieves convenient construction, simple construction, The effect of improving the service life

Inactive Publication Date: 2013-01-30
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 provides a method for rapid treatment of damage of a cavity beneath a cement concrete pavement slab and has the advantages of low cost, a fast repairing speed and a good effect. According to the invention, a falling weight deflectometer and a ground penetrating radar are used for determination of a cavity position at corners and a center position of a cement concrete pavement slab; then grouting holes are arranged in the cement concrete pavement slab, wherein an emulsified asphalt cement-based composite material is used as a grouting slurry; a grouting pump is employed to pump the grouting slurry from a mixer, and the grouting slurry is injected into the cavity position of the cement concrete pavement after pumping pressing by a high-pressure rubber hose; after grouting is finished, the cement concrete pavement is maintained for 4 to 6 h; and mortar is used to plug the grouting holes, after the grouting holes are stood for 8 to 12 h, and then parts of the pavement higher than the pavement is polished until the parts of the pavement are as high as the original pavement.

Description

technical field [0001] The invention relates to a method for quickly treating the void disease at the bottom of cement concrete road slabs. 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 the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C23/10
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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