Cores are generally cut with the use of a rotary cutting tool having diamond bits. In this way, a cylindrical specimen is acquired normally with its ends to be unequal, parallel and square and occasionally with embedded pieces of reinforcement.
Core cutting is performed for the following reasons :-
- To detect firmness and density of concrete
- To find out depth of carbonation of concrete
- Chemical analysis
- Water/gas conformity
- Petrographic analysis
- ASHTO Chloride permeability test