The technique of planting bar reinforcement is usually to drill holes in the concrete structure, to deposit steel bars into the holes and to form a firm bond between the steel bars and the concrete through the epoxy resin adhesive, so that the steel bars and the concrete can form a joint construction method. The effect of the planting bar reinforcement depends on the performance of the epoxy resin used. It requires not only sufficient strength but also to overcome the bad weather. For example, it should maintain a good reinforcement effect under high temperature conditions. Welding is often used in the connection of steel bars. Such high temperature is easy to affect the reinforcement effect due to insufficient performance of epoxy resin adhesive. How to enhance the high temperature resistance of the building reinforcement epoxy resin adhesive?
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How to enhance the high temperature solder resistance of building reinforcement epoxy resin adhesive?
In fact, the high temperatures generated by welding may cause planting bar slip and result in loss of strength. According to a large number of tests, it can be proved that the amount of plant slippage is related to the following factors:
(1) Anchoring depth: The increase of anchoring depth can reduce the final amount of planting slip.
(2) Welding position: The closer the welding position is to the colloidal position, the larger the amount of planting slip.
(3) Reinforcement diameter: The larger the diameter of the steel bar, the smaller the amount of hindrance slip of the planting bar under high temperature welding.
How to enhance the high temperature solder resistance of building reinforcement epoxy resin adhesive?
It can be seen that we can reduce the threat of planting bar slip by increasing the anchoring depth, increasing the distance between the solder joint and the epoxy resin planting bar adhesive, and increasing the diameter of the steel bar. In the GB50550-2010 specification, there is a regulation similar to this: when the steel bar needs to be post-welded, in addition to the cooling measures for intermittent welding, the distance between the welding site and the top surface of the injection hole should not be less than 15d. It should not be less than 200mm; at the same time, the exposed roots of the ribs must be wrapped with a multi-layered wet towel impregnated with ice water.
In addition, what other ways can enhance the high temperature solder resistance of the planting bar? Mankate high temperature resistant epoxy resin adhesive is undoubtedly a good choice. Mankate high temperature epoxy resin adhesive has passed the high temperature welding test: high temperature surrounding welding 10mm thick by arc welding at the exposed root of the planting bar. The steel plate is cooled to room temperature for the drawing test, and the form of damage is still broken. Mankate epoxy resin adhesive strength, solder resistance, flame retardant performance are guaranteed to have good temperature resistance, long-term use in 135 ° C environment, short-term high temperature resistance up to 200 ° C.
So if there is a problem, don't worry. Find the reason, the solution will naturally appear. Whether it is from the improvement of the construction process or the use of higher quality epoxy resin, in the end, the purpose of enhancing the high-temperature welding resistance of the building-reinforced epoxy resin can be achieved. If you still have any questions, please feel free to contact Mankate. Mankate has special technical staff to answer customer questions from material to construction. Mankate, 24 hours, is waiting for your arrival~ Mankate's one-stop service hotline: 400- 894-5118
