Richmond mount
Catago50lacrim3CaO·SiO2+nH2O→2CaO·SiO2·（n－H2O+Ca（OH）2,
Product specification of disposable grouting pipe: outer diameter: 12mm; Inner diameter: 8mm; Inner diameter tolerance: ± 0.3mm; Packing quantity: each roll of grouting pipe is 120m long.
Richmond. It is a thermoplastic material, which can be processed and formed many times, providing convenience for hot melting and electrofusion connection of pipes.
When installing the Hainan grouting pipe, carefully check the embedded reinforcement in the groove before the joint is lowered. If cracks or breaks are found the position is improper or the gap is too large, remedial measures must be taken.
.The disposable grouting pipe can only be grouted once and cannot be reused.
[0022] when the utility model is in use, the flange plate is used to fix the utility model and the flange plate of the underground grouting pipe, the bolt is rotated with a tool,RichmondHollow self-propelled anchor rod manufacturer, the cutting blade is adjusted to a certain position by the screw on the bolt, and then fixed, and then the screw cap of the blade is rotated and tightened to make the cutting blade and the pulley contact the inner surface of the grouting pipe with a certain contact force, that is, neither loose nor tight. The cutting blade and the pulley are directly inserted into the concave groove of the rotating device through the slot, and the cutting rotating device is fastened and rotated by a wrench or a tooth wrench, and the pulley and the blade are driven to rotate by the rotation of the bolt, thereby rotating the casing. The pulley is located on the other side of the rotating device, corresponding to the blade. It is mainly used to reduce the friction between the rotating device and the casing wall, and fix the position of the blade in the casing, so as to prevent the blade on one side from shifting during cutting, failing to achieve the cutting purpose, or even damaging the blade. The fastening bolt is rotated by a wrench or tooth wrench, so as to drive the pulley and blade to rotate. The cutting rotating device cuts the casing. When the casing is cut to a certain depth, the common disadvantages of the grouting pipe grouting method, the flower pipe grouting method and the drill pipe grouting method are that the grouting is easy to overflow along the pipe wall and the grouting layering effect is poor. These disadvantages are particularly prominent when using the slurry with good fluidity and long initial setting time; Its advantages are simple equipment and process, good flexibility, fast construction speed, and more suitable for situations requiring rapid response.
Calculation formula of weight per linear meter of pile foundation grouting pipe (unit: kg / M)
It has good flexibility. The pipes can be coiled when they are produced, so that the number of joints in the pipe network can be reduced. It can be laid according to the terrain, easily bypass obstacles, and is convenient for construction.
The double liquid silicification method is suitable for strengthening sandy soil with permeability coefficient of 0 ~ 0m/d or for seepage prevention and water stop. A sodium silicate solution having a density of 35 to 44 and a calcium chloride solution having a density of 26 to 28 are used. After the two solutions are contacted with the soil, a gel chemical reaction is generated to generate silica gel and calcium hydroxide. The ultimate compressive strength of the reinforced soil can reach 5 ~ 0MPa.
Quality improvement.The repetitive grouting pipe can be reused for many times,RichmondTunnel combined hollow anchor manufacturer, and the core and outer wall of the pipe need to be cleaned after each use.
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.
Reusable grouting pipe: it can be used for many times, and the grouting is not limited by time.
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, 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.
The longitudinal overlapping width of grouting pipe and grouting pipe shall not be less than 20cm, and the transverse overlapping width shall not be less than 15cm. The former shall be placed on the latter according to the asphalt paving direction. After laying the glass fiber grouting pipe, fix the glass fiber grouting pipe with high-quality cement nails and fixed iron sheets with a size of 30mm, 30mm and a thickness of 0.3mm. The fixed spacing can be determined according to the actual construction situation.
(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,RichmondSmall conduit support, mm.
Richmond. The installation will not affect the characteristics of the building grouting pipe; The installation or grouting process will not harm the concrete; Permanent sealing can be ensured after grouting; If there is no leakage, grouting is not allowed. The key construction process flow of grouting pipe installation is as follows: table formwork processing, mesh binding - grouting pipe and installation of embedded reserved side formwork installation - process acceptance - concrete pouring - concrete curing - 10000 m3 data thickness to ensure the integrity of the table formwork, a gel chemical reaction is generated to generate silica gel and calcium hydroxide. The ultimate compressive strength of the reinforced soil can reach 5 ~ 0MPa.
During high-pressure grouting, the water stop needle is used from top to bottom along the crack at an angle of 45 degrees about 5cm to the left and right. The straight-line distance between the two water stop needles is about 20cm. If the crack is too large, it can be directly drilled vertically to the crack.