In construction projects, concrete beam pouring hollow drum is a common problem. If not handled properly, it can have an impact on the structural safety and durability of the building. Therefore, it is very important to deal with the hollow drum for concrete beam pouring.
First of all, we need to understand the reasons for the hollowing of concrete beam pouring. Generally speaking, hollowing is due to the gap between the concrete and the formwork, which causes air to enter the beam, forming bubbles. These bubbles form hollows when the concrete hardens. In addition, the quality of the formwork, the degree of wetting, the situation of coating the separator, and the mixing ratio, mixing, transportation and pouring of the concrete will also affect the quality of the concrete beam pouring, resulting in the generation of hollow drums.
For the treatment of concrete beam pouring hollow drum, we can take the following methods:
1. Precautionary measures:
1.In the process of formwork production and installation, it is necessary to ensure the flatness and splicing of the formwork to prevent slurry leakage and air leakage.
2.The template should be fully moistened and cleaned before use, and the release agent should be applied evenly and appropriately.
3.The mixing ratio, mixing, transportation and pouring of concrete should be operated in strict accordance with the specifications to ensure the quality and compactness of concrete.
Second, the treatment method:
1.For the slight concrete beam pouring hollow drum, the method of local chiseling can be used to remove the hollow drum part, then rinse and moisten it with clean water, and finally repair it with high-strength grade concrete.
2.For the more serious concrete beam pouring hollowing, comprehensive treatment measures need to be taken. First, the steel bars of the hollow drum are inspected and reinforced, then the concrete around the hollow drum is chiseled and cleaned, and finally repaired with high-strength grade concrete. At the same time, the entire beam needs to be reinforced to ensure the structural safety of the building.
3.For very serious concrete beam pouring hollowing, a more complex treatment method is required. For example, the entire beam is replaced or reinforced, and the overall structure of the building is inspected and evaluated to ensure the safety of the building.
In short, concrete beam pouring hollowing is a problem that needs to be paid attention to, and appropriate preventive and treatment measures need to be taken to ensure the structural safety and durability of the building. In the process of treatment, different methods should be adopted for different situations to ensure that the treatment effect is good. At the same time, in the construction process, it is necessary to strictly abide by the standard operation, improve the construction quality and safety management level, and prevent the recurrence of similar problems.