The bonding strengths of a wide and varied range of materials including concrete, screeds, repair mortars, epoxy resin coatings, laminates, plastics, paints and enamels may be accurately determined using this Bond Tester. Adequate direct tensile strength or bonding strength between two layers is important if repairs to concrete structures or additional overlays and screeding on existing concrete is to be structurally sound. The pull-off test as a means of projecting the compressive strength of concrete and other materials involves bonding a circular steel disk to the surface by means of an epoxy resin adhesive.
A controlled tensile force is then applied to the disk, and as the strength of the bond is greater than that of the material under stress it will eventually fail in tension. From the area of the disk and the force applied at failure it is possible to calculate a nominal tensile strength for the material. The standard kit includes: 50mm of stroke, a 25kN gauge; 10 x 50 mm steel bond discs; 10 x 75 mm steel bond discs and a calibration certificate.
Choice of Six analog gauges are available as accessories: 5kN, 10kN, 15kN, 20kN, 25kN and 30kN
