Brantford48lead small conduitIndustry engineering consulting qualification

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.

According to the sequence of sectional construction along the stratum depth, grouting can be divided into sectional downward, sectional upward and one-time full depth grouting. The segmented downward type starts from the ground,BrantfordTunnel leading small conduit and pipe shed, drills a section of holes from top to bottom, the drilling and grouting continue to be continued downward, so as to alternately reach the designed final grouting depth, and then carries out re grouting from bottom to top; The segmented upward type is that the grouting hole is drilled to the final grouting depth at one time, and the grouting is segmented from bottom to top using a grout stopper; The method of one-time full depth grouting is to drill the grouting hole to the final grouting depth at one time, and then conduct one-time grouting to the full depth.

Brantford. The overhead type is a special rack installed at the bottom of the driving head and connected with the wellhead tensioning equipment.

The system allows grouting at relatively low pressure.

.After the grouting hole is drilled, the grouting pipe, grout stopper, mixer and other facilities in the hole shall be installed and lowered.

Water pressure test water pressure test is to use the grouting pump to inject clean water into the grouting section. Its main purposes are: check the grouting stop effect of the grouting stop pipe head, especially the grouting stop plug.

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,BrantfordGrouting seamless pipe, and the core and outer wall of the pipe need to be cleaned after each use.

The grouting pipe is a thermoplastic material, which can be processed and formed many times,BrantfordSupport small conduit, and then punched with regular holes. Then it is made by directional stretching under the control of heating. It can be divided into unidirectional grouting pipe and bidirectional grouting pipe according to the different stretching modes when it is manufactured.

[4] It is believed that it is undoubtedly one of the research directions of new grouting materials coordinated with the sustainable development of the times to develop high-performance and green grouting materials by effectively using large quantities of industrial wastes instead of pure cement clinker in China.

Finance Department.1 Characteristics: the grouting pipe is divided into disposable grouting pipe (ccll-y grouting pipe, qdm-it 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.

The electric double fluid silicification method is suitable for strengthening soft clay foundation with permeability coefficient less than 0.1m/d. The grouting pipe with holes is used as the anode, and the reinforcement or filter pipe driven into the soil layer is used as the cathode. The sodium silicate and calcium chloride solutions are pressed into the soil layer through the grouting pipe and supplied with direct current. Under the action of electroosmosis, the pore water diffuses from the anode to the cathode, and the solution flows from the anode to the cathode along with the movement of water, so that the grouting effect is improved. The reinforcement cost of this method is high, and it can only be used after it is confirmed to be effective by tests.The alkali solution method is to heat the sodium hydroxide solution (alkali solution) to 80 ~ 100 ℃ and pour it into the soil layer through the grouting pipe with holes under its own weight. When the content of calcium and magnesium ions in the soil is high (such as loess), the surface of the soil particles will be activated and self cemented, which is called the single solution method; When the content of calcium and magnesium ions in the soil is less (such as general cohesive soil)

The flexibility of the product is very high, and it is easy to place at the corners without cutting and connecting.

2 the particle size of cement clay paste clay is generally very small (less than 0.005mm), the specific surface area is large and it has colloidal chemical characteristics when encountering water. The characteristic of clay minerals is that their atoms are arranged in layers, and different arrangements form different clay minerals, the most common being kaolinite, illite and montmorillonite.

Welcome calls . The inner core of the grouting pipe is rigid, which can ensure that it will not be crushed under the concrete pressure. The non-woven filter cloth layer outside the framework only allows water and grouting fluid to pass through, and other materials such as cement slurry in concrete are blocked outside the grouting pipe to fully ensure the smooth use of the whole section of the grouting pipe.

The glass fiber grouting pipe has the characteristics of easy construction, high temperature resistance, corrosion resistance, low elongation, high elastic modulus no long-term creep, meeting the requirements of environmental protection, and has high tensile strength in the transverse and longitudinal directions. The strength to weight ratio of glass fiber is larger than that of steel, and the tensile strength can reach 100 kn / m, which provides sufficient strength to prevent reflection cracks. When it breaks its elongation is less than 4%, it has high deformation resistance and good compatibility with asphalt mixture.

The 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.

Brantford. Flexibility: it is convenient to place at the corner without cutting and connecting.

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 grouting pipe of the spring reinforcement framework shall be bound with the bamboo frame of the reinforcement framework according to the construction rigidity of the component. After being bound into a bundle, it shall be stacked at the specified position and lifted to the abutment cross. During the reinforcement binding process, the quality and wall shall be strictly controlled according to the ship support and the finished product shall be well protected. The injection pipe shall be placed on the top, and the embedded grouting symbol shall be buried on the formwork for positioning. The inverted formwork shall be used to install stairs and component side formworks to increase the turnover rate of the formwork as much as possible. According to the design size, the formwork shall be equipped with plate cutting machine and edge folding machine Cutting shall be carried out by profile training machine, rebar concealment and cross slab shall be carried out according to blanking standards. Unqualified ones shall be rectified until they meet construction technology. Concrete pouring Before concrete mixing, the water content of sand and stone shall be measured and the construction mix proportion shall be adjusted according to the test results.