The Deslauriers Econ-O-Cap® Unbonded Capping System is designed for concrete cylinder compression testing, providing a reusable alternative to traditional bonded capping methods. The system uses precision-machined steel retaining cups and replaceable neoprene compression pads to help distribute the test load uniformly across the ends of concrete specimens. The Econ-O-Cap retaining cup holds the compression pad securely against the end of the concrete cylinder. Deslauriers machines the retaining cups from high-alloy steel to the same tolerance as testing-machine platens, while the steel construction is designed to resist deflection and scratching. Retaining cups are available for 2", 3", 4" and 6" diameter specimens.
The neoprene compression pad conforms to irregularities in the cylinder end and distributes the applied load uniformly. Deslauriers offers pads in several hardnesses to accommodate different concrete strength ranges. The pads incorporate patented “stay in place” nubs that help secure them within the retaining cups.