Guangzhou Cement Pipe Plant
The shape of square pile is easier to develop a non welded quick connector, which can truly achieve all-weather construction, and construction is faster, which can avoid cracking of welded pile head in high groundwater level. 1) Positioning, centering and leveling of the pile driver. After the mixing pile position is placed, move the mixing pile driver to the designated pile position, centering and leveling (leveling with a level). 2) Adjust the verticality of the guide frame, and use a theodolite or plumb bob to control the verticality of the guide frame in both directions. According to the design and specification requirements, the verticality is less than 1.0% of the pile length. 3) The slurry is premixed in advance. While the deep mixer is premixing and sinking, the cement slurry is mixed in the background and put into the aggregate hopper before grouting. The cement grade 425 # ordinary silicate cement is used to mix the slurry, the water cement ratio is controlled in the range of 0.45~0.50, and the cement consumption per meter of deep mixing pile is not less than 50Kg according to the design requirements.
Guangzhou Cement Pipe Plant
4) When mixing and sinking, start the rotary table of the deep mixing pile machine. When the speed of the mixing head is normal, the drill pipe can be mixed while sinking along the guide frame. The sinking speed can be adjusted by the gear, and the working current should not be greater than the rated value. 5) When the grout is mixed and lifted and sunk to the design depth, start the mortar pump, send the grout through the pipeline to the grout outlet of the mixing head, start the mixing pile machine and tighten the chain device after the grout is discharged, and lift the drill pipe while spraying and mixing according to the designed lifting speed (0.50~0.8m/min) to fully mix the grout and soil. 6) Repeat mixing and sinking. After the mixing bit is lifted to 500mm above the pile top, turn off the mortar pump, repeat mixing and sinking to the design depth, and the sinking speed shall be in accordance with the design requirements.
Guangzhou Cement Pipe Plant
1、 Factors affecting the price fluctuation of reinforced concrete cement pipes. 1. The quality of materials used for cement pipes will affect the price of cement pipes: generally speaking, the price of cement pipes will be slightly higher than the market average price if the quality of raw materials used for cement pipes is high, while the price of cement pipes with ordinary quality will be slightly lower. 2. The manufacturing process of cement pipes will also affect the price of cement pipes: generally, different types of cement pipes adopt different manufacturing processes, some are complex and tedious, some are simple and take less time, so the prices of different cement pipes will be different.
Guangzhou Cement Pipe Plant
When planning the cement pipeline system, the slope of the cement pipeline above the overflow water level should be minimized to reduce the length of the ponding pipe section and the amount of ponding in the drainage system. The slope of the cement pipeline below the overflow water level should not be too small, and it should be ensured that the water flow has a certain scouring strength on the pipeline when the pipeline is evacuated. This method is applicable to the control point of the cement pipeline which is close to the access point of the municipal cement pipe network. If one method is adopted, the cement pipeline in the community cannot be connected to the municipal pipe network, and the residential community or factory area with small scale is also applicable to the rainwater drainage system. When used in the rainwater drainage system, rainwater is discharged through overflow wells. The rainwater pump is only opened after each rain and when the pipeline needs to be dredged and maintained, so as to remove the accumulated water in the pipeline.
