Method for repairing pavement by reinforcing roadbed through grouting

A technology for repairing road surfaces and subgrades, which is applied to roads, roads, buildings, etc., and can solve problems such as damage, subgrade damage, and insufficient construction space

Pending Publication Date: 2020-12-15
HUALAN DESIGN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Seriously affect the travel safety of surrounding residents, and urgently need repairs and renovations
[0003] At present, after most roads are partially damaged, they are not repaired in time due to conditions such as maintenance approval procedures and funding sources. Instead, they wait for the road surface to be severely damaged (the specific damage level is determined by a third-party inspection) before re-paving, resulting in The first damaged position is mo

Method used

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  • Method for repairing pavement by reinforcing roadbed through grouting
  • Method for repairing pavement by reinforcing roadbed through grouting
  • Method for repairing pavement by reinforcing roadbed through grouting

Examples

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Embodiment example

[0052] Such as Figure 1-4 As shown, the pavement damaged area 2 appears in the sidewalk area 1 of Liushi Road in Liuzhou City, and the repair is carried out by using this application plan, including the following steps:

[0053] (1) Determination of the grouting position: use the deflection test and visually observe the phenomenon of mud pumping on both sides after the rain stops, and jointly determine the grouting position. According to the width of the damaged roadbed and the width of the grout spread, draw a plan for roadbed grouting reinforcement (label the road centerline 3 and roadway area 4, the pavement consists of cushion layer 5, lower base layer 6, upper base layer 7, emulsified asphalt viscous oil layer 8, asphalt concrete 9, stress absorption layer 10 and asphalt concrete upper layer 11) from bottom to top. line to determine the drilling position;

[0054] (2) Drilling according to the designed grouting hole position 15: According to the design requirements, ali...

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Abstract

The invention discloses a method for repairing a pavement by reinforcing a roadbed through grouting. The method comprises the following steps that the grouting position is determined; drilling is carried out according to the designed vacancy; slurry pouring is carried out; hole finishing is carried out; transferring to a next hole site for construction is carried out, wherein an interlaced jump grouting method is adopted for construction in order to avoid influences on peripheral existing hole sites; after grouting construction is finished, curing is conducted for 5 days, and then qualification detection is conducted; after the roadbed reinforced through grouting is detected to be qualified, C20 plain concrete with the thickness of 30 cm is poured into a C20 road groove; after the C20 plain concrete is cured to reach the strength of 70% or above, an emulsified asphalt viscous oil layer is spread; asphalt concrete is paved; a rubber asphalt stress absorption layer is paved; and after aqualified treatment area and other areas which do not need to be treated are milled and planed, a fine-grained AC-13 and SBS asphalt concrete upper surface layer is finally paved together. By means ofthe scheme, the old and stubborn problem of long-term pavement subsidence at local positions of a road can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of road construction and reinforcement, in particular to a method for repairing road surfaces by using grouting to reinforce roadbeds. Background technique [0002] With the continuous development of my country's economy, the road traffic volume is increasing, and the road surface has been damaged to varying degrees due to the impact of vehicle load, pipeline excavation, and disrepair. Part of the road surface has local network cracks, cracks, road surface sinking and damage around the inspection well. Seriously affect the travel safety of surrounding residents, and urgently need repairs and renovations. [0003] At present, after most roads are partially damaged, they are not repaired in time due to conditions such as maintenance approval procedures and funding sources. Instead, they wait for the road surface to be severely damaged (the specific damage level is determined by a third-party inspection) befor...

Claims

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Application Information

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IPC IPC(8): E01C3/04E01C3/00
CPCE01C3/00E01C3/04
Inventor 钟谷王全陈琨廖俊于日婷孙志云曾柳生郑天栋李筠晗
Owner HUALAN DESIGN GRP CO LTD
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