In the field of structural reinforcement, chemical anchors, as an efficient anchoring material, are widely used in various structural reinforcement projects.   Chemical anchors are divided into high-strength chemical anchors and conical chemical anchors.   However, many people are not very clear about the differences between the two and do not know when to use high-strength chemical anchors and when to use conical chemical anchors.   Today, the editor will analyze the differences between the two from multiple aspects:

Please pay close attention to the following points:

The requirements and differences for the use of the two types of anchors in concrete are also quite obvious.   Some areas have banned the use of high-strength chemical anchors in building curtain wall projects, and only conical chemical anchors can be selected for replacement.

The specifications clearly stipulate that high-strength chemical anchors cannot be used on cracked concrete.   Therefore, when designing and constructing projects, it is necessary to consider the type of concrete.   Cracked concrete areas can only be anchored with a combination of conical chemical anchors and mechanical anchors.

For projects that need to meet design requirements: If your project has high requirements for mechanical performance and requires the use of large-specification anchors, conical chemical anchors are more suitable.

Taking M12×160 high-strength chemical anchors and conical chemical anchors as examples, when conducting tensile tests on C30 non-cracked concrete, the result is that the screw is pulled off.   At this time, the two types of anchors of the same grade have almost no difference in force;   but if both anchors are of the M24×300 specification, the tensile test results will be the adhesive body is destroyed, and the anchor is directly pulled out.   At this time, the tensile force of the conical chemical anchor may be about 20% higher than that of the high-strength chemical anchor or even more.

That is to say, the tensile force of the conical chemical anchor using injection-type rebar glue is better.   At this time, the pulling force of the high-strength chemical anchor may just not meet the requirements, and only the conical chemical anchor can be used.

The construction techniques of the two are also different.   The following are the construction process:

Chemical Anchor Construction Process

Drilling the base material;

Cleaning the hole;

Inserting the chemical anchor glue tube into the hole;

Slowly screwing the chemical anchor screw into the hole;

Waiting for the adhesive to cure;

After curing, the load can be carried.

Conical Chemical Anchor Construction Process

Drilling the base material;

Cleaning the hole;

Injecting the rebar glue into the hole;

Slowly screwing the screw into the hole;

Waiting for the adhesive to cure;

After curing, the load can be carried.

From the perspective of product customization, there is also a big difference.   If the customer chooses a non-standard model of the screw, the manufacturer will specially customize the production of the corresponding chemical glue tube for this length of the anchor, and even if it can be customized, it is not cheap.   However, using conical chemical anchors, there is no need to use the corresponding chemical glue tube, and the construction can be carried out directly with the injection-type rebar glue and conical chemical anchors.