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Can steel adhesive and steel planting adhesive be used interchangeably?
Date：2020-04-08 09:30:00
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Reinforcement adhesive and steel adhesive are common reinforcement materials in the field of engineering reinforcement. Their common points are as follows: they are all made of modified epoxy resin as the main raw material, in the shape of paste, which is used for bonding between concrete and steel. Therefore, some engineers do not understand the essential difference between them, or even use them interchangeably.
For this reason, Xiaobian reminds the majority of users: the planting glue and steel glue can never be used interchangeably, because they are quite different in the aspects of colloidal performance, test environment, etc.
Different colloidal properties:
The adhesive for planting steel bars belongs to the structural adhesive for post anchoring, whose properties emphasize splitting tensile strength, bending strength and compressive strength.
Steel adhesive is a kind of structural adhesive which can bond steel plate and concrete. Its properties emphasize tensile strength, tensile modulus of elasticity, elongation and so on.
Performance display of planting bar adhesive
The tensile strength can ensure that the steel adhesive colloid will not be damaged quickly under a certain tension. Under a certain tensile modulus of elasticity, the greater the tensile strength is, the greater the elongation can be. The large tensile modulus of elasticity can ensure that the colloid will not be easily deformed. The elongation is the most important part of the steel adhesive, because the steel adhesive must transfer the force to the steel plate, so it is necessary to ensure that This can be achieved only when the elongation of the adhesive is close to the yield elongation of the steel plate.
Different environments for testing adhesion:
In GB 50728-2011 technical code for safety appraisal of engineering structure reinforcement materials, there are obvious requirements and differences on the bond ability and testing standards of planting bar adhesive and steel adhesive. For planting bar adhesive, when testing its bond ability, it is necessary to carry out the pull-out test on the ribbed steel bar under the constraint conditions, but there is no such rule for sticking steel adhesive.
There is no small matter about the safety of the structure. The construction must be carried out in strict accordance with the requirements of the code in the reinforcement construction of the project.
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