Ray pontiniAdvance small conduit supportThe market demand for is increasing day by day

no significant subsidence and the vibration shall be &fast inserting and slow pulling& and slightly pumped up and down to make the concrete vibrate evenly. The vibration shall be carried out in sequence to avoid over vibration and missing vibration until the concrete surface is horizontal, no bubbles and no mortar on the surface. During vibration, the vibrating handle shall not touch the side formwork, grouting pipe, pipeline, embedded parts etc.

Ray pontini.Answer: it varies according to the model and elasticity of the grouting pipe, and its internal pressure can reach 150bar or more.

The installation is simple, fast and firm. At least one part of the grouting conduit buried in the concrete shall be firmly bound with the structural reinforcement; The length of the grouting duct leading out of the concrete shall not be less than 150mm; The leading end of the grouting conduit shall be set at a convenient and accessible position. No part of the grouting conduit shall be flattened or bent to avoid affecting the flow of grout. The opening end of the conduit shall be temporarily blocked to prevent foreign matters from entering. The damaged part of the grouting pipe shall be cut off, and the grouting pipe with the installed grouting pipe shall be re set at the cut-off part, and shall be overlapped with the original grouting pipe at both ends.When binding or welding reinforcement near the grouting pipe, temporary shielding measures shall be taken to protect the grouting pipe. The calculation of the reserved expansion amount of the grouting pipe and the bridge expansion joint changes all the year round. With the change of temperature and the change of vehicle live load, the bridge will shrink and deform. The grouting pipe and the bridge expansion joint play a major role at this time. The expansion amount of the grouting pipe and the expansion joint must be calculated accurately. The installation and construction of the grouting pipe and the expansion joint need to ensure the quality. We should select the model and type of grouting pipe and bridge expansion joint, and determine the installation time, installation season and temperature of grouting pipe and expansion joint. Calculate the large and small preload of grouting pipe and expansion joint.

. Steel pipe, plastic pipe or steel corrugated pipe should be used as acoustic detection pipe, and its inner diameter should be 50 ~ 60mm. The connection of detection pipes shall be smooth transition, the nozzle shall be more than 100mm higher than the pile top, and the nozzle height of each detection pipe shall be the same. The lower end of the pipe shall be closed,Ray pontiniGrouting hollow anchor manufacturer, and the upper end shall be covered. There shall be no foreign matters in the pipe and no damage to the pipe body.

Full section slurry discharge (4 slurry discharge holes) is uniform and smooth.

On site inspection of grouting pipe: Before on-site inspection,Ray pontiniSmall catheter, measure the delay time from the sound wave monitor to the receiving system. And calculates a sound time correction value.

Curing The concrete components shall be covered and moisture cured within 12h after pouring. The time of concrete curing by watering shall not be less than 7 days for the concrete mixed with Portland cement, ordinary portland cement or slag Portland cement; For the concrete mixed with retarded admixture or with impermeability requirements, it shall not be less than 14 degrees. The cured concrete shall be covered with plastic cloth, and all exposed surfaces shall be tightly covered, and condensed water shall be kept in the plastic cloth.

Welding is strictly prohibited during use, because the strength of the welding point is much lower than that of the steel itself, and it is easy to cause broken wires at the welding point during tensioning. When the grouting pipe adopts circular reinforcement arrangement, its bending radius shall not be less than 3 times of the diameter. The quality of the steel upsetting head of the grouting pipe is not directly related to its own quality, but the excessive strength will be harmful to the quality of the upsetting head. Therefore, when you choose the upsetting head anchor, you should explain it in detail to the manufacturer in the order.

Cement water glass slurry overcomes the shortcomings of single liquid cement slurry, such as long setting time, difficult control and low stone rate, the concrete strength must meet the design requirements. When there are no special requirements in the design, the non prestressed members shall not be less than 50% of the designed standard value of concrete cube compressive strength, and the prestressed members shall not be less than 75% of the designed standard value of concrete cube compressive strength.

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, 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.

The grouting pipe is a thermoplastic material, which can be processed and formed many times, which provides convenience for the hot-melt and electric fusion connection of the pipe.

When the concrete strength can ensure that its surface and edges are not damaged due to formwork removal, the side formwork can be removed.

Discount. Non woven filter cloth layer outside the framework. Only water and grout are allowed to pass through, and other materials such as cement slurry in concrete are blocked outside the grouting pipe to ensure smooth use of the whole section of the grouting pipe.

Before the installation of the grouting pipe, it is necessary to check whether the processed support is vertical to the grouting pipe fitting, and correct the non vertical support; Then install the grouting pipe on the bracket and fasten it.

The distance between measurement points is 40cm, and when abnormalities are found, it is encrypted to 20cm.

Ray pontini. It has good impact resistance and high fracture elongation. Experience has proved that it can resist the impact of natural disasters such as earthquakes.

(the density of steel pipe is 85kg/dm calculation formula: w = 0.02466 (D-S) s where: W - theoretical weight of steel pipe per meter, kg / M; D - Nominal outer diameter of steel pipe, mm; S - nominal wall thickness of steel pipe, mm.

The fast cutting device in the hole of the underground grouting pipe according to claim 1, wherein the outer diameter of the cutting rotating device is 2 mm smaller than the inner diameter of the grouting pipe.