Application of high pressure cleaner in construction project resumption and rust removal

The construction project was suspended due to the capital of the construction unit, and some wall columns, beams and slabs were bound with steel reinforcement, and the concrete could not be poured after the installation of the formwork, resulting in the exposed steel reinforcement surface of the shear wall columns and beams and slabs becoming rusty due to long-term exposure to wind and rain. , according to the requirements in "Code for Construction of Concrete Structure Engineering" GB5066-2011, and the "Code for Acceptance of Construction Quality of Concrete Structure Engineering": the steel bars of structural components should be straight and free of damage, and the surface should not have cracks, oil stains, granular or Flake old rust, so rust removal of steel bars has become the primary work after the start of construction.

 

Before the resumption of construction work, it is necessary to remove rust on the wall columns, beam slab reinforcement and surrounding underground garage beam slab reinforcement, on-site semi-finished steel reinforcement, and post-casting strip reinforcement. The amount of rust removal is huge and the cost is high. Manual rust removal requires a large number of personnel, and the rust removal efficiency is relatively slow; when chemical rust removal is used, the rust remover has weak corrosion on the steel bar and has a negative impact on the performance of the steel bar. The chemical rust removal process is not easy to control, and chemical removal After rusting, rust removal and washing will produce high pollution. If the rust remover is not cleaned properly, it will also cause corrosion to steel bars and concrete.

The principle of high pressure water jet rust removal technology

High-pressure water jet technology is a new type of special processing technology. The principle of removing rust on steel bars is to use the striking force of the jet to generate a water wedge effect on the surface of the rust layer to further expand the cracks in the rust layer. Flush to complete the rust removal. Water jet rust removal has outstanding characteristics such as cleanliness, environmental protection, high efficiency, and good adaptability to complex surfaces. High-pressure water jet rust removal will not cause secondary pollution and does not require cleaning treatment. Compared with other rust removal methods, high-pressure water rust removal has the characteristics of high degree of mechanization, good rust removal effect and low cost. Good promotion value.

 

A high-pressure washer is a machine that uses a power unit to generate high-pressure water from a high-pressure plunger pump to wash the surface of an object. It can peel off and wash away the dirt to achieve the purpose of cleaning the surface of the object. Because the high-pressure water column is used to clean the dirt, the high-pressure cleaner is also one of the world's recognized scientific, economical and environmentally friendly cleaning methods. According to the rust removal requirements of construction projects, a high-pressure washer with a pressure value of 25MPa can be selected. During the cleaning process, the high-pressure washer can be lifted to the floor by a tower crane, leveled with a formwork, and a water tank is set at the lower part of the floor. Put one end of the water pipe into the floor. One end of the water tank is connected to the equipment to ensure water for rust removal.