Bonded steel reinforcement is very popular in the reinforcement project due to its simple construction and small space occupation. The reinforcement effect of the bonded steel reinforcement method depends largely on the adhesive process and operation level. In order to improve the reinforcement effect and control the quality of bonded steel reinforcement, we not only need to choose a professional construction team and bonded steel materials, there are also many places to pay attention to in the process. Now Let us take a look at how to control the quality of bonded steel reinforcement construction during the construction process.
1. Carefully study the design drawings and fully understand the design intent.
The project technical person in charge, technicians, and quality inspectors should be fully familiar with the design drawings and review the construction requirements of the design drawings to meet the requirements of the specifications.
2. How to control the materials? What to control?
The main materials used for steel reinforcement are steel plates, bonded steel, screws, and expansion bolts. First of all, it should be confirmed that the model, specification, quantity, technical requirements, etc. of the materials. They should be consistent with the design, and then the material quality assurance certificate, certificate of conformity, product instruction manual, material performance and composition test report are complete.
3. How to control the measuring line of bonded steel reinforcement?
Before the construction, according to the design requirements, the on-site measurement and release line shall be carried out, and the quality inspectors shall follow up and check to ensure that the bonding position, length and spacing of the steel plate meet the requirements of the design drawings.
4. How to control the quality of concrete bonding surface?
The quality of surface treatment of concrete members is the key to whether the quality of bonded steel meets the design requirements, and it is also one of the key points of quality control of the project department. The inspection and acceptance of quality inspectors should be carried out one by one.
5. How to control the rust and rough treatment of the bonding surface of the steel plate?
It is also important to deal with the bonding surface of the steel plate and the concrete bonding surface. The steel plate should be rusted to a metallic luster and polished. The greater the roughness, the better. The grinding grain is perpendicular to the direction of the steel plate and wiped with cotton wool. The surface can be pasted after the surface is dry.
6. How to control the bonding of bonded steel adhesive?
The bonding of the adhesive steel glue has a certain influence on the strength and the bonding quality of the adhesive. The mixing container should be well protected against rain and water. The adhesive is formulated indoors and prepared and stirred according to the formula and mixing method specified in the product manual.
7. How to control the quality of the paste process?
Before the steel plate is pasted, the reinforcement member should be unloaded. When assembling the steel plate, the steel plate should be pressed against the concrete surface. After the steel plate is pasted, it should be pressed and fixed. The order is from one end of the steel plate to the other end or from the middle of the steel plate to both ends. When pressing, the force should be uniform and the strength should be moderate. When the steel plate is pasted, the surface should be flat.
8. What should we pay attention to when checking and accepting?
At normal temperature, after the steel plate is pasted for 24 hours, the temporary fixture or fixed support can be removed. After 72 hours, the supervision can be submitted to the construction quality acceptance. The final acceptance is mainly to check the compactness of the bonded steel plate one by one, and the hammering method can be used to judge whether it is empty or not. Ultrasonic methods can also be used to detect bond compactness.
9. How does the stick steel resist corrosion?
The surface of the bonded steel is rusted by an electric wire brush and an iron-coated cloth. After cleaning, the epoxy resin is used to make a primer, and the epoxy resin fiberglass cloth is used for anticorrosion.
Although the reinforcing effect of bonded steel is not as good as carbon fiber cloth in most cases, it still has great application prospects. Everyone should pay attention to the control of the quality of bonded steel reinforcement, which not only saves a lot of time and energy, but also can largely improve the reinforcement effect. If you have any doubts about the bonded steel reinforcement, please feel free to contact us~
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(Editor: Nanjing Mankate, if you need to reprint, please indicate the source)
