Precautions for Concrete in Tunnel Engineering

• Posted by Mavis Chai June 9, 2023 Filed in Technology #concrete production  84 views
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  The use of concrete in tunnel engineering is a relatively common engineering operation, and some precautions need special attention:
  
  
  1. Excessive vibration must be avoided as far as possible during the transportation and pouring of the mixed concrete. If the concrete is shaken excessively, it will cause cracks or damage to the metal formwork.
  
  2. The composition and ratio of concrete should be strictly controlled to ensure the consistency and stability of quality. It is recommended to carry out several tests to confirm the proper ratio before the concrete is put into use.
  
  3. Workers must understand the characteristics and flow properties of concrete during transportation and pouring to ensure that the level between the concrete and the metal formwork embedded in the concrete remains consistent.
  
  4. Concrete should be fully dry and fully hydrated within a sufficient time to ensure that the concrete has sufficient crack resistance and strength, especially in high temperature and humid environments.
  
  5. The amount of concrete poured and the number of concrete layers should be within a safe and controllable range, especially in deeper tunnel parts, such as subway tunnels, etc.

  In general, the use of concrete in tunneling projects needs to be done with great care and attention. It is recommended that each production step be discussed in detail before construction and ensure that the concrete formula, concentration of cement paste, mixing time, pouring height, temperature and humidity The quality control of multiple steps, such as the placement of water pipes and transportation methods, has been strictly monitored and accurately controlled. In this way, the project quality and construction safety guarantee can be well grasped.
  
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