When connecting two different materials, such as concrete and steel, there is a naturally occurring force that can cause twisting, bending, buckling and movement of the two different materials.
Composite Material Strength
The two materials, in this case, the concrete and the steel, respond to gravity and other forces differently, resulting in separate and different movement patterns. For bridge decks, concrete and steel buildings and other types of construction, the use of shear studs stop the two materials from moving separately and forces them to move together.
The result is the use of shear studs create a stronger and more resilient composite material. It is more resistant to buckling, twisting or moving over time than either concrete or steel would be on its own. However, this enhanced stability of the two composite materials is only obtained with the correct number, type and pattern of headed studs are used.
The shear stud also called a headed stud, or a stud connector is very basic in design. It has a head that is slightly concave on the top and round in shape. This head will face up, away from the steel component, forming a connection or an anchor into the concrete. The shaft or the body of the stud is unthreaded.
The foot of the shear stud is stud welded to the steel using stud welding. A ferrule is also used for this stud welding process, creating the strongest and most complete weld for extreme hold and durability. This process can be used in corners and angles, ensuring the ideal pattern and placement of the shear studs to offset any shear force present.
All construction requiring the use of shear stud connectors will be completed to specific building standard and specifications. This is essential to ensure the full anchoring of the two composite materials for the required strength and bonding of the two components for safety and durability.