Pull Off & Pull Out Testing
Concrete pull-off testing is used to measure the direct tensile strength of a material or bond strength of an interface. The concrete pull-off testing equipment consists of a metal test disc, epoxy, core drill, draw bolt, and bond testing machine. A shallow core is drilled perpendicularly into the surface leaving the intact core still attached to the material at the area of interest. A metal test disc of the same diameter as the core is bonded to the surface of the attached core. The bond test machine then applies a load until failure occurs. Using this type of testing for quality assurance ensures that clients receive an adequate, well-constructed repair.