The glass fiber grouting pipe has the characteristics of easy construction, high temperature resistance, corrosion resistance, 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 kn / m, which provides sufficient strength to prevent reflection cracks. When it breaks, its elongation is less than %, it has high deformation resistance and good compatibility with asphalt mixture.After checking that the formwork installed by the grouting pipe is tight and seamless, the reserved groove can be cleaned, 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 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, 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 times of the diameter.system, The bottom of the horseshoe of the grouting pipe is too low. After the horseshoe is seated in the mold, the space between the outer mold and the horseshoe surface is greater than the thickness of the pipe wall.Answer: Yes, the elastic extension speed of the grouting pipe can be defined within a certain range in the design, but for a grouting pipe that has been designed, its elastic extension speed is certain.Can the stretching speed of grouting pipe be defined?
Grouting pipe grouting mainly improves the bearing capacity of piles from these two aspects Grouting is carried out through the grouting pipe embedded in the pile body. The slurry integrates the soil and slurry around the pile body through penetration, splitting and compaction, so as to improve the physical and mechanical properties of the bearing layer of the pile body Especially for the ballast at the bottom of the pile, grouting can improve or eliminate the adverse effect of the ballast at the bottom of the pile on the end bearing capacity through the replacement, compaction and consolidation of the ballast by the slurry.II During the drilling process of the bored pile, there will be a certain gap between the pile retaining wall and the surrounding soil layer, which will lead to the decrease of the pile side friction and affect the bearing capacity of the pile When the grouting pipe is used at the pile end for grouting, the slurry will permeate, fill and compact along the side of the pile under the pressure, so as to complete the replacement of the mud skin around the pile and the filling of the gap, such as greatly improving the pile side friction resistanceEncyclopedic knowledge,If any crack is found, it shall be repaired in time, otherwise, when the joint is deformed and subjected to water pressure, the ability of the grouting pipe to resist external forces will be greatly reduced. When positioning the grouting pipe, it must be kept flat at the interface and the grouting pipe must not be allowed to roll or kink. If it is found that there is no twist, the deviation of the grouting pipe shall be prevented it should be adjusted in time. When casting and fixing the grouting pipe, it must be vibrated sufficiently to prevent the poor combination of the grouting pipe and the concrete from affecting the water stop effect. The grouting pipe joint must be well bonded. If the construction site conditions are available the method of hot vulcanization connection can be used.?Development trend editor since the advent of Portland cement in , cement grouting has been the main grouting method in engineering. However, ordinary cement can only be filled with sand gravel or pores with a diameter greater than . ~ .mm due to its coarse particles. Therefore, improving the fineness of cement particles has become the main way to improve the groutability of cement slurry. Some countries have developed a kind of ultra-fine cement, which can pour fine sand with permeability coefficient of - ~ -cm / s and micro cracks in rocks. It is a promising granular grouting material. Propionate is a kind of water-soluble polymer chemical slurry, whose viscosity is close to that of water. It is widely used in anti-seepage grouting and dynamic water plugging of fine rock cracks and medium fine sand layers. However, this kind of pulp material is toxic and pollutes the air and groundwater, so most of them have stopped production and use. In , AC slurry was developed in the United States, and in , ac-ms slurry was developed in China. The toxicity of this kind of slurry is very small (only % of the toxicity of propionate). It is an ideal anti-seepage slurry. The non alkaline silicate slurry developed in Japan has no alkaline pollution to groundwater, low viscosity, high gel strength, good durability and does not change the pH value of groundwater. [] Grouting method is divided into ceramic process grouting and construction engineering grouting. Ceramic process grouting is the process of using the prepared mud injection in ceramic production. Construction engineering is to use appropriate methods to inject some curable grout into the cracks or pores of the rock and soil foundation, and to improve its physical and mechanical properties through replacement, filling, extrusion and other methods to make ceramic bodies suitable for processing.Make it into a certain shape, size and specification. Seepage prevention Water plugging The bottom of the horseshoe of the grouting pipe is too low. After the horseshoe is seated in the mold, the space between the outer mold and the horseshoe surface is greater than the thickness of the pipe wall.Arthur, The grouting pipe is padded with the front lip of the horseshoe, and the height of the saddle shaped curved surface is changed to make the pipe wall crawl and slide along the accurate saddle shaped curved surface.The grouting pipe shall be cut with a toothless saw (grinding wheel clamp). Cutting by electric or gas welding is easy to damage the surrounding surface and cause local heating at the end, which significantly reduces its performance. During the use of the grouting pipe,ArthurAdvance small conduit for tunnel, it is forbidden to take any form of heating deformation measures to avoid reducing the mechanical properties of the grouting pipe.Grouting pipe grouting pipe manufacturer clamp type grouting pipe grouting pipe price grouting pipe spot grouting pipe specification grouting pipe model grouting pipe raw material for grouting pipe grouting pipe is processed by welded pipe or spiral steel pipe, and grouting pipe processed by seamless steel pipe is generally rare in the market. The reasons are as follows: first, which is easy for purchasers to accept. The cost of domestic products made of spiral steel pipes and seamless steel pipes is too high. Second the cost of grouting pipes made by welding is relatively low, in terms of processing technology, welded pipes are relatively easy to process, and the equipment required is relatively simple. If spiral steel pipes and seamless steel pipes are processed, the process is relatively complex. Manufacturing process and characteristics of clamp down grouting pipe clamp down grouting pipe is a kind of grouting pipe. Because only professional hydraulic clamps are required for connection, it is also commonly called clamp down grouting pipe. The clamp grouting pipe has the following characteristics: the connection of the grouting pipe is simple, as long as the hydraulic clamp is required for connection. The grouting pipe has joints at both ends of the clamp type grouting pipe, which avoids the possibility of loosening and has good seismic resistance. Several common failures in the installation of grouting pipes always have many problems when using grouting pipes for work. In order to enable everyone to provide production to the factory normally, we have specially summarized the following failures that will occur when using grouting pipes. If you have problems in the following examples, you will know how to solve them The first point is that if the joint, nozzle or bottom of the grouting pipe is not tightly sealed, it will be blocked by cement slurry during construction. At this time it is OK to check the sealing The second point is that the joint is misaligned or deformed during installation. At this time, we need to know that it is caused by the thin material selected. The above two points are common problems in the installation of grouting pipes that are not suitable for the current location. Wed better remember these points of attention, so that when they occur in the future, we will know how to deal with them to ensure a quick solution! The grouting pipe joint or the pipe orifice and the pipe bottom are not sealed tightly, so please bring in mud or cement slurry during the construction process to block the pipe: during the installation and grouting of the grouting pipe, the rebar is distorted or collided, causing the dislocation and deformation of the grouting pipe joint or the deformation of the pipe wall. The main reason for this is the selection of thin-walled grouting pipes.