Mechanical anchor bolt and chemical anchor bolt are a kind of material to strengthen the fastening of the object, in actual use, you can choose according to your own needs and environmental requirements, because of its different material principles, so it is different, the following is a comparison of their differences:
1. Earthquake resistance
The screw material of the chemical anchor bolt is slightly worse in strength grade, and the tensile resistance and shear resistance are lower, while the screw material of the mechanical anchor bolt has higher strength and strong tensile resistance, so the seismic ability is stronger, so the mechanical anchor is preferred from the perspective of seismic resistance.
2. High temperature resistance and weldability
Because of the chemical raw materials used, the chemical anchor has a low relative melting point, and the high temperature resistance is obviously weaker than that of the mechanical anchor with a high melting point of metal materials, and the mechanical anchor is more flexible because of its weldability.
3. Reliability
Because the metal material used in the mechanical anchor bolt has good performance, it helps to maintain the fastening force for a long time, while the chemical anchor can not fully play its role because of the level of the construction personnel and the incomplete hole cleaning work, so as to reduce the durability of the fastening force.
4. Construction period
Because the chemical anchor is cured with chemical materials, it takes a curing time, especially in the low temperature environment in winter, the curing time will be longer, resulting in the extension of the construction period, while the mechanical anchor is ready to use, no need to wait, and the construction has nothing to do with the temperature environment, so the construction period is much faster.
5. Price
Compared to chemical anchors, mechanical anchors are more expensive.
6. Substrate selection
Compared with other intumescent products, chemical anchors have the effect of no expansion stress and can be used in cracked concrete, and the requirements for the substrate are not too high.
7. Characteristics of use
It mainly relies on the adhesion of chemical substances, and then after testing, the anchoring force is strong, which is similar to pre-embedding.
8. Corrosion resistance
After solidification, because it is wrapped in glue, the metal part cannot contact the air, and the corrosion resistance is greatly increased.