Durham Advance grouting small conduitHow to solve the problem of core components

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,Durham Advance support of small conduit, 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.

[0019] a flange I and a bearing 8 are provided on the outer surface of the cutting rotating device The fast cutting device in the hole is installed in the grouting pipe hole through the flange. The fixed cutting device 2 is mainly composed of a cutting blade and a pulley. The expansion and contraction diameter of the blade is adjusted by the bolts at the tail of the rotating flange to cut the grouting pipe. The rotating blade and the pulley are connected to the rotating device through slots.[0020] the outer diameter of the cutting rotary device 5 is 2mm smaller than the inner diameter of the grouting pipe, which can be processed and formed many times, providing convenience for hot melting and electrofusion connection of pipes.

2 the polymer grouting materials of the machine are mainly applied to acrylamide, polyurethane, lignin, epoxy resin, unsaturated ester, etc. Generally, when the sand particle size is ≤ 0.5 mm or the rock crack opening is ≤ 0.2 mm, and the groundwater flow rate is > 500 mm / min, the use of organic polymer chemical grouting materials can solve the engineering problems that cannot be solved by ordinary cement slurry [5].

. When the daily average temperature is lower than 5 ℃, no watering and thermal insulation measures shall be taken. Steam curing can be used when the temperature cannot reach the natural curing conditions or early demoulding is required. Generally steam curing should be carried out at a temperature of about 65 degrees. Canvas and tarpaulin should be used for curing. In order to avoid crack deformation of concrete components caused by sudden rise and fall of steam temperature, the speed of temperature rise and drop must be strictly controlled.

The construction steps of the three grouting methods are basically the same: the lower pipe grouting pipe grouting method and the flower pipe grouting method generally use the vibration method to place the grouting pipe into the soil at a predetermined depth. In the case of a large depth, the method of pre drilling a certain depth and then vibrating in can also be used. The drill pipe grouting method directly relies on the drilling method to place the grouting pipe (drill pipe) into the soil.

This seems to test what I learned in junior high school. The formula for calculating the weight per linear meter of a cylinder I learned at that time is now used. However, it may be more troublesome to calculate according to that formula. It is necessary to calculate the weight per linear meter of the outer cylinder with the formula, and then subtract the weight per linear meter of the inner space. I have a headache when I think about it! With less gossip, I'd better provide you with a method to correctly calculate the weight of the grouting pipe per linear meter!

Application scope: This product can be widely used in subway, tunnel, water plant and sewage treatment plant, 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)

Plastic pipe plastic pipe has a low acoustic impedance, which is used as a grouting pipe and has a large acoustic transmission rate. It can usually be used for smaller cast-in-place piles. It should be cautious when used in large-scale cast-in-place piles - because large-diameter piles need to be poured with a large amount of concrete, and the hydration heat of cement is not easy to dissipate. In view of the great difference between the thermal expansion coefficient of plastic and concrete, the plastic pipe will shrink radially and longitudinally due to the temperature drop after concrete solidification, It may be separated from the concrete locally to cause air or water crevices and add more strong reflection interfaces on the sound path, chemical slurry, mixed slurry object: rock grouting, gravel grouting, clay grouting, coal body grouting coal and rock mass grouting : anti-seepage grouting, reinforcement grouting, 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.

Installation materials.[0023] the innovation points of the utility model are as follows: The operation intensity of workers is reduced by using the lead screw principle; The use of rotary cutting in the casing reduces the amount of work for clearing the roadway floor; The cutting depth of the utility model can be adjusted at will according to the actual situation of the roadway.

(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 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.

Green grouting materials mainly refer to industrial wastes such as fly ash, slag and steel slag. It can be excited by alkali, and its solid particles are smaller than ordinary cement particles, and the particle gradation distribution is more reasonable. Therefore, it can be used as a raw material for grouting materials.

Select appropriate transmission voltage and amplifier gain and keep them unchanged during retest.

production.[0009] the beneficial effects of the utility model are as follows: the utility model is set in the grouting pipe, reduces the operation intensity of workers by using the lead screw principle, and reduces the quantities of clearing the roadway floor by using the rotary cutting in the casing pipe; The cutting depth can also be adjusted at will according to the actual situation of the roadway. The working efficiency is 4-5 times higher than that of manual cutting, which can greatly reduce the labor intensity of workers.

The Xiaobian of prestressed machines and tools reminds us that there are many forms of grouting pipes, which can be distinguished from different angles, including the following. According to the type of reinforcement of the grouting pipe, it can be divided into the grouting pipe of thick reinforcement of the grouting pipe, the grouting pipe of parallel reinforcement (wire) bundle of the grouting pipe, and the grouting pipe of steel strand bundle of the grouting pipe. For thick reinforcement, one grouting pipe is generally used to anchor one reinforcement. For tendons and steel strands, a grouting pipe must anchor several steel bars or steel strands at the same time, which are often arranged in a ring or circle, or in a rectangle. Obviously, due to the different number and arrangement of prestressed reinforcement, the form and structure of grouting pipe will also be different. According to the principle of grouting pipe and transmitting pretension, it can be divided into grouting pipe relying on bearing pressure grouting pipe relying on friction and grouting pipe relying on adhesion.

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, and then the concrete can be poured and vibrated tightly. The concrete shall have at least the same strength as the structural concrete at this place. The grouting pipe device in Hainan shall be kept clean when pouring concrete.

The grouting pipe can be intercepted 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 grouting is carried out internally under the pressure the reserved groove can be cleaned, the grouting pipe liquid can keep uniformly filling the whole pipe; The system allows grouting under relatively low pressure; seven

Squeeze grouting or split grouting: depending on the grouting pressure,Durham Small conduit manufacturer, 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.