The acoustic tube is a special pipeline used to detect the diameter, spacing, and thickness of the concrete protective layer in the concrete structure. In the process of use, sometimes foreign objects fall into the acoustic tube due to various reasons, such as steel bar heads, plastic bags, etc. These foreign objects not only affect the normal operation of the acoustic tube, but can also cause damage to the concrete structure. Therefore, as soon as a foreign object is found to have fallen into the acoustic tube, measures must be taken to remove it in time.
Here are a few commonly used methods to remove foreign objects from acoustic tubes:
1.Direct removal method.
If the foreign body inside the acoustic tube is small, it can be found and removed directly by direct observation or using a tool such as a flashlight. This method is simple and easy to do, but it requires care to avoid damage to acoustic tubes or concrete structures.
2.Barometric method.
The pneumatic method is to discharge foreign matter from the nozzle by filling the acoustic tube with gas so that the pressure inside the tube is higher than the external pressure. This method is suitable for the situation that there are large or many foreign bodies in the tube, but it requires the use of professional pneumatic equipment, which is difficult to operate.
3.Mechanical vibration method.
The mechanical vibration method uses a professional vibrator to vibrate the acoustic tube, so that the foreign matter moves in the tube and is discharged from the nozzle. This method is suitable for situations where the foreign body in the tube is light or soft, but requires the use of specialized vibrating equipment and the operation time is longer.
4.Chemical corrosion method.
The chemical corrosion method is to inject a chemical reagent into the acoustic tube to cause a chemical reaction of foreign matter and dissolve it in water. This method is suitable for the case that the foreign body in the tube is a metal-like substance, but it requires the use of professional chemical reagents, and the operation process is more complicated.
It should be noted that when removing foreign objects from the acoustic tube, it must be ensured that no damage will be caused to the concrete structure, and at the same time, damage to the acoustic tube itself must be avoided. Therefore, it is necessary to be cautious in the process of operation and choose the appropriate method according to the specific situation.