Stone micro-pressure grouting concrete structure reinforcing method

Abstract

The invention discloses a pebble micro-pressure grout-filled concrete structure reinforcing method, which belongs to the field of buildings and comprises the following steps of: 1, chiseling away incompact concrete, cleaning a section, and trimming reinforcing steel bars; 2, binding iron gauze cloth, filling coarse aggregate pebbles, and uniformly distributing the coarse aggregate pebbles, the putting amount of the coarse aggregate pebbles being about 50-60% of the volume of the cavity; thirdly, the reinforcing formwork is blocked, and a slurry inlet and a material supplementing hopper are reserved; fourthly, a grouting material mixture is mixed, slurry is slowly injected from a slurry inlet through a grouting machine till the cavity space is filled with the slurry, and the supplementing hopper is filled with the slurry; fifthly, the grouting pipe is removed, and a grout inlet is blocked; and sixthly, 24 hours later, after the grouting material is solidified, the material supplementing hopper is removed, and mold removal and maintenance are conducted. According to the invention, local materials are easy to obtain, the strength is high, the crack resistance is strong, the quality is guaranteed, the acceptance is simple and convenient, and the application range is wide.

Description

technical field

[0001] The invention relates to the technical field of construction, in particular to a method for reinforcing concrete structures filled with gravel micro-pressure grouting. Background technique

[0002] my country's prefabricated construction industry is ushering in a new stage of rapid development. The contradiction between the rapid development of prefabricated buildings and the inspection and acceptance of related construction quality has gradually become prominent. The assembly steps of the nodes are completed on site: node reinforcement binding-blocking formwork-pouring concrete.

[0003] However, in the construction management, it was found that the vertical joint structure between the precast walls, the vertical joint structure of the precast wall at the corner, and the vertical joint structure of the prefabricated wall at the wing wall are very prone to concrete inconsistency in this part Phenomenon, there are many honeycombs and pores, and even lar...

Examples

Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0032] refer to figure 1 , a method for reinforcing concrete structures filled with gravel micro-pressure grouting, comprising the following steps:

[0033] The first step: Chisel off the uncompacted concrete, clean the section, and repair the steel bar 1;

[0034] Specifically, while trimming the steel bars 1, the original stirrups are trimmed synchronously to ensure that the distances between the two stirrups are the same and they are arranged on the same axis.

[0035] Step 2: Bind the barbed wire cloth 2, fill the coarse aggregate stone 3, and make it evenly distributed, and the amount of the coarse aggregate stone 3 accounts for about 50%-60% of the cavity volu...

technical field

[0001] The invention relates to the technical field of construction, in particular to a method for reinforcing concrete structures filled with gravel micro-pressure grouting. Background technique

[0002] my country's prefabricated construction industry is ushering in a new stage of rapid development. The contradiction between the rapid development of prefabricated buildings and the inspection and acceptance of related construction quality has gradually become prominent. The assembly steps of the nodes are completed on site: node reinforcement binding-blocking formwork-pouring concrete.

[0003] However, in the construction management, it was found that the vertical joint structure between the precast walls, the vertical joint structure of the precast wall at the corner, and the vertical joint structure of the prefabricated wall at the wing wall are very prone to concrete inconsistency in this part Phenomenon, there are many honeycombs and pores, and even lar...

Examples

Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0032] refer to figure 1 , a method for reinforcing concrete structures filled with gravel micro-pressure grouting, comprising the following steps:

[0033] The first step: Chisel off the uncompacted concrete, clean the section, and repair the steel bar 1;

[0034] Specifically, while trimming the steel bars 1, the original stirrups are trimmed synchronously to ensure that the distances between the two stirrups are the same and they are arranged on the same axis.

[0035] Step 2: Bind the barbed wire cloth 2, fill the coarse aggregate stone 3, and make it evenly distributed, and the amount of the coarse aggregate stone 3 accounts for about 50%-60% of the cavity volu...

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