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Urban road pavement grouting reinforcement construction method

A technology of road pavement and construction method, which is applied in the field of urban road pavement grouting reinforcement construction, can solve problems such as economic loss, large construction waste, and large traffic interference, and achieve the effect of enhancing strength

Inactive Publication Date: 2019-01-04
国诚集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has a long construction period, high cost, great traffic interference and a large amount of construction waste, which invisibly causes greater economic losses.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The urban road pavement grouting reinforcement construction method provided in this embodiment comprises the following steps:

[0022] (1) Investigate the fixed plate, visually observe the looseness of the staggered plate and the crack plate when the heavy vehicle passes through the road, and then determine the mud plate according to the situation of the plate crack when the vehicle passes after the rain;

[0023] (2) Arrange 5-7 grouting holes on the pumping plate, and the arranged grouting holes are distributed in a plum blossom shape. One grouting hole is drilled in the center of the pumping plate, and the rest of the grouting holes are selected around the pumping plate. At 50cm from the edge of the mud plate, the diameter of the drilled grouting hole is controlled at 5-8cm, and the drilling depth of the grouting hole is controlled at 5-8cm below the bottom of the mud plate;

[0024] (3) To prepare slurry, select 100 parts of Portland cement, 60 parts of fly ash and ...

Embodiment 2

[0029] This embodiment is basically the same as Example 1, except that the composition of the slurry is changed, and the slurry includes 90 parts by weight of Portland cement, 50 parts of fly ash, and 12 parts of concrete accelerator. parts, 30 parts of filler powder, 0.2 parts of aluminum powder, 4 parts of expansion agent, 1 part of defoamer and 60 parts of water.

Embodiment 3

[0031] This embodiment is basically the same as Example 1, except that the composition of the slurry is changed, and the slurry includes 110 parts by weight of Portland cement, 70 parts of fly ash, and 20 parts of concrete accelerator. parts, 48 ​​parts of filler powder, 0.3 parts of aluminum powder, 8 parts of expansion agent, 3 parts of defoamer and 80 parts of water.

[0032] The filler powder in above-mentioned embodiment 1-3 comprises hematite, kaolinite, marble and granite, and the proportioning of hematite, kaolinite, marble and granite is 3:2:0.5:0.5, and described filler powder The preparation method comprises: a. pulverizing and pulverizing hematite, kaolinite, marble and granite through a 100-mesh sieve; b. uniformly mixing pulverized and pulverized hematite, kaolinite, marble and granite.

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Abstract

The invention discloses an urban road pavement grouting reinforcement construction method, comprising the steps of (1) determining a pumping plate; (2) distributing grouting holes in the pumping plate; (3) preparing a slurry; (4) driving a grouting plug pipe into a grouting hole, fixing the grouting plug pipe, wherein the bottom end of the grouting plug pipe exceeds the bottom of the pumping plateby 1-3 cm, and after fixation of the grouting plug pipe, one end of a conveyer hose is fixed to an opening of the grouting plug pipe, and the other end of the conveyer hose is connected with a grouting pump; (5) feeding the slurry into the bottom of the pumping plate via the grouting pump, and stopping feeding when the pumping plate starts rising; (6) after feeding stopping, pulling out the grouting plug pipe, inserting a wooden plug, removing the wooden plug after the injected grout fully solidifies, and sealing the grouting hole with fast-setting cement mortar. The method herein has the advantages that pressure is applied to the slurry having great mobility, certain jacking action can be provided against slight settlement due to bottom disengaging of the pumping plate, a damaged concrete road pavement can be repaired quickly and effectively, and pavement strength is enhanced accordingly.

Description

technical field [0001] The invention belongs to the technical field of road construction, and in particular relates to a grouting reinforcement construction method for urban road pavement. Background technique [0002] In recent years, my country's urban road construction has advanced by leaps and bounds, and the mileage of traffic has increased significantly year by year. Due to the unevenness of the subgrade filling materials on urban roads, the settlement after completion is not uniform, resulting in rainwater intrusion into the subgrade, and under the action of vehicle loads, mud is formed, resulting in the continuous reduction of subgrade materials under the slab, and the panel is subjected to vertical loads The effect of continuous supplementary compaction on the subgrade of the slab bottom will eventually cause diseases such as hollowing out, fracture of the concrete panel and even fracture of the pavement base. These diseases have seriously affected the safety, comf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C23/09C04B28/04C04B111/72
CPCC04B28/04C04B2111/0075C04B2111/72E01C23/098C04B18/08C04B2103/12C04B22/04C04B2103/50C04B2103/0068C04B14/308C04B14/106C04B14/28C04B14/048
Inventor 赵辉赵清侯潇仪侯凯文
Owner 国诚集团有限公司
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