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San JosePipe sThe single liquid silicification method is applicable to reinforce collapsible loess with permeability coefficient of 0.1 ~ 0m/d and silty fine sand with permeability coefficient of 0.3 ~ 0m/d.
Verify the water permeability of the rock stratum according to the measured water absorption of the borehole to determine the grouting pressure and flow, and determine the grouting slurry and its initial concentration.
Liberia. Glass fiber grouting pipe is a semi-rigid product made of glass fiber as raw material, high-strength alkali free glass fiber through a certain warp knitting process and fiber filament coated on both sides.
The so-called direct grouting method refers to the method of directly placing the grouting pipe into the soil by vibrating or drilling. According to the different forms of grouting pipes, the direct grouting method can be divided into the grouting pipe grouting method, the flower pipe grouting method, the drill pipe grouting method, and the stop plug grouting method.Grouting pipe grouting method refers to the method of grouting directly through the nozzle at the lower part of the grouting pipe; The flower tube grouting method is a method of grouting through a grouting tube (flower tube) with multiple grouting holes on the side wall; The drill pipe grouting method refers to the method of grouting directly through the drill pipe for drilling.
. Grouting: connect the grouting equipment, grouting pump and the lowered grouting pipe, conduct grouting according to the requirements, and inject the slurry into the soil through the grouting pump. After completing the construction of one grouting section, move the grouting pipe upward or downward as required to carry out the construction of the next grouting section.
The comparison between the embedded detection and the on-site detection of the grouting pipe is yzed as follows: The embedded detection pipe: The pile diameter of 0.6 ~ 0.8m should be buried with double pipes; Three pipes shall be buried with pile diameter of 0.8 ~ 0m; Four pipes shall be buried above the pile diameter of 0m. According to the specific situation of Chifeng bridge, three pipes can be buried in the pile foundation.
Injecting grout into the embedded grouting pipe can seal construction joints, cold joints, pipe leakage and joints between the ground walls.
When the a diameter of grouting connecting reinforcement is less than or equal to 16, the a diameter of connecting reinforcement is greater than
The grouting pipe is a patented product. Compared with similar products in the market, it has higher tensile resistance and better sealing performance.
Features of grouting pipe: Simple installation, complete supply; The grouting pipe can be cut at the construction site according to the actual required length of the joint (it is recommended that the longest grouting outlet length should not exceed 6m); No special installation equipment is required; Grouting time can be arbitrarily selected; When the inner grouting is performed under pressure, the slurry in the grouting pipe can keep filling the whole pipe evenly; The system allows grouting at relatively low pressure; The installation will not affect the characteristics of the building grouting pipe itself; The installation or grouting process will not harm the concrete; Permanent sealing can be ensured after grouting; If there is no leakage,Liberia32lead small conduit, grouting can be omitted.
Customer first.Application of full section grout discharge grouting pipe in construction sequence the full section grout discharge grouting pipe is a embedded grouting pipe system, which is used for permanent sealing of construction joints, cold joints, pipe leakage, gaps between ground walls, etc. in concrete. In the treatment of construction joints,LiberiaLeading small conduit manufacturer, leakage remedial measures are mainly reserved. When leakage occurs, grouting is used to make up the leakage. The grouting material can be filled with hydrophilic epoxy resin slurry, which can seal the construction joint. The outer diameter of the grouting pipe is 12mm; Inner diameter 8mm; Pressure at 30% deformation > 7MPa; Weighing about 71t / M; Operating temperature < 70 ℃.
Squeeze grouting or split grouting: depending on the grouting pressure, the grout is forced to open various channels in the underground layer to squeeze into the stratum. The grout is mostly consolidated in a vein or a tree shape. This grout can squeeze the soft bottom layer tightly, so it is also called compaction grouting in foundation reinforcement. Displacement grouting: the soil and sand in the injected stratum are forced out through certain methods, and the space formed is filled with grout, It is called displacement grouting High pressure mass injection grouting: the kinetic energy of jet flow is used for grouting.
The specification and weight of the grouting pipe are actually very well understood. It is the approximate method for calculating the weight of the grouting pipe per linear meter, where d = outer diameter s = wall thickness.
Permanent sealing can be ensured after grouting. If there is no leakage,LiberiaDouble layer small conduit advance support, grouting can be omitted.
Encyclopedic knowledge.2 specification: inner diameter of disposable grouting pipe: 8mm; Outer diameter: 12mm; Inner diameter tolerance: ± 0.3mm; Length of each roll: 120m. Inner diameter of repetitive grouting pipe: 8mm; Outer diameter: 20mm Inner diameter tolerance: ± 0.3mm; Length of each roll: 90m.
It is necessary to comprehensively consider the selection and configuration of grouting pipes, because there are many types of expansion joints, and correct selection is very important. Only in this way can the design of the piping system be safe, reasonable, reliable and economical.?
Grouting: connect the grouting equipment, grouting pump and the lowered grouting pipe conduct grouting according to the requirements, grouting can not be carried out.
During high-pressure grouting, the water stop needle is used from top to bottom along the crack at an angle of 45 degrees, about 5cm to the left and right. The straight-line distance between the two water stop needles is about 20cm. If the crack is too large, it can be directly drilled vertically to the crack.
1 Characteristics: the grouting pipe is divided into disposable grouting pipe (ccll-y grouting pipe qdm-it grouting pipe, ccll-y full section grouting pipe) and repetitive grouting pipe (ccll-d grouting pipe, ccll-d full section grouting pipe). The disposable grouting pipe can only be grouted once and cannot be reused. The repetitive grouting pipe can be reused for many times, and the core and outer wall of the pipe need to be cleaned after each use.