West Bay50lead small conduitThe overall scale of the project is large

Application scope: This product can be widely used in subway, tunnel, water plant and sewage treatment plant, swimming pool and upstream amusement park, dam, ship lock, c, reservoir and ditch, nuclear power station, primary and secondary cofferdam facilities, bridges, commercial and industrial buildings, garages, stadiums, aquariums, water tanks and similar structures. Grouting channel for deformation joint, construction joint leakage maintenance and embedded water stop. Slurry pipe (theoretical weight per meter)

Slump test shall be carried out for concrete entering the site. No less than 3 groups of test pieces shall be made for the same batch of concrete with the same strength grade. One group is used for standard curing, and the other two groups are used for curing under the same conditions to determine demoulding and allowable lifting time.

West Bay.In limestone area, the punching is not good, and it is difficult to sink the reinforcement cage. When the grouting pipe is deformed and blocked by unconventional means, the pipe is blocked due to the workers' carelessness and falling into small concrete blocks. The deformation and blockage of the grouting pipe bring great difficulties to the detection work, and even can not be detected. Therefore, when the grouting pipe is found blocked after the foundation pile is poured and before the inspection effective measures should be taken to pass the pipe to ensure the smooth progress of ultrasonic inspection. Generally, there are three methods for passing the pipe: stabbing the grouting pipe with thick and long reinforcement, flushing and pigging with high-pressure water, and using a drill with a small drill to clean the hole.

Injecting grout into the embedded grouting pipe can seal construction joints, cold joints, pipe leakage and joints between the ground walls.

.Pre detection can be carried out. If there is no leakage grouting can not be carried out.

Chemical grouting chemical grouting materials are mainly used in water glass and organic polymer grouting materials.

Consolidation Prevent landslide Reduce ground subsidence Improve foundation bearing capacity Backfill Reinforcement materials: cement slurry, chemical slurry, mixed slurry object: rock grouting, gravel grouting, clay grouting, coal body grouting coal and rock mass grouting : anti-seepage grouting, reinforcement grouting,West BayTunnel combined hollow anchor manufacturer, foundation underpinning grouting, water blocking reinforcement grouting, sealing filling grouting mechanism: filling grouting, splitting and vein grouting, bedrock crack grouting, seepage grouting Interface grouting, concrete crack grouting, compaction grouting pressure: static pressure grouting, high-pressure jet grouting ceramic technology; It is divided into high-pressure grouting and ordinary grouting injection grouting.

Pre detection can be carried out. If there is no leakage, grouting can not be carried out.

The grouting pipe without shaft roll packaging is tapped and paid off from the inner ring in the vertical state and the drawn out pipe is spring shaped and automatically straightened. Takeout direction: the spiral direction of the spring shape after takeout is consistent with the twisting direction of, otherwise fried dough twist or disorder will occur. Welding is strictly prohibited during use, its bending radius shall not be less than 3 times of the diameter.

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, which is characterized in that the fast cutting device in the hole mainly consists of a fixed cutting device , a tension blade device and a cutting rotating device . The tension blade device is sleeved in the cutting rotating device , and screw threads are respectively set on the outer surface of the cutting rotating device and the upper end of the tension blade device , The fast cutting device in the hole is installed in the grouting pipe hole through a flange plate, and the fixed cutting device is connected with the flange plate through bolts.

Permanent sealing can be ensured after grouting. If there is no leakage, grouting can be omitted.

(outer diameter - wall thickness) what is actually obtained is the average value of the inner and outer diameters of the circumference. If this value is multiplied by the circumference ratio (π = 141592, the circumference will be obtained. If the circumference is multiplied by the wall thickness, the area of a section will be obtained. If the area of this section is multiplied by 1 meter (1000mm), the adjusted volume will be obtained. If the adjusted volume is multiplied by the density of 85, the weight of one meter length will be obtained.

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

Variable cost.(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, and the size matches the flange of the Christmas tree wellhead.

Squeeze grouting or split grouting: depending on the grouting pressure mm.

The small editor of prestressed machines and tools will lead you to understand the main connection methods between the drive device and the wellhead: the connection between the flange of the drive head of the electric oil pump and the parallel flange is the most widely used one at present. There is a flange at the lower part of the drive head, 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.

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

At present, Wuhan University of technology has completely replaced cement clinker with ground industrial waste slag (fly ash,West BayDouble layer small conduit advance support,West Bay42 * 4 small conduit, slag and steel slag) and successfully prepared a new type of two liquid grouting material with different gel time (3 ~ 300 s), high consolidation strength (~ 25 MPa) and stone rate of by using water glass to stimulate industrial waste slag, which has been successfully applied in the construction of Wuhan Yangtze River Tunnel [6].

In addition, the water corrosion test results of the grouting material simulating the fresh water erosion environment show that the strength of the stone body of the grouting material does not lose under the condition of water corrosion for 180 days, while the strength loss of the cement water glass grouting material reaches 50%, which shows that the water corrosion resistance durability of the water glass industrial waste two liquid grouting material is better than that of the cement water glass two liquid grouting material [7].