How do core drills work?

Using extensions, core drills can produce very long, straight holes. The stiffness of the core barrel permits holes to be drilled with less deviation from the intended path, and they are capable of drilling through embedded steel without great effort.

What type of drill do you use to drill concrete?

For longer embedment depths, core drills are generally the preferred option. In contrast to hammer drills, which fracture the concrete with impact energy, core drill bits utilize a sacrificial matrix containing diamond fragments to abrade the concrete.

What is a Hilti piston plug system?

The Hilti piston plug system provides positive feedback to the operator for controlling the injection process through the pressure of the adhesive on the plug and has been shown to dramatically improve injection quality and efficiency.

Do rock drills damage concrete?

Rock drills offer speed and efficiency and produce a rough hole surface that is suitable for bond, but the larger impact energy associated with rock drills may increase the tendency for damage in the concrete member, particularly if used in applications with small edge distance or reduced backside cover.

Which adhesive should I use if the drilling method is not predetermined?

Where the drilling method to be used has not been predetermined, it is advisable to use an adhesive that is suitable for all drilling methods (e.g. Hilti HIT-RE 500 V3) Bond between adhesive and concrete is directly influenced by the condition of the hole wall at the time of adhesive injection.