Pull Off/Pull Out Testing
Pull off testing is normally undertaken on concrete repairs to check the bond stress between the original concrete substrate and the cementitious repair material. Pull off tests can also be undertaken on screeds, CFRP carbon fibre plates for strengthening works and ceramic tiles etc in vulnerable areas. Pull off testing is a useful technique in any areas where the bond between materials needs to be proven.
Pull out testing is undertaken on a wide variety of fixings eg holding down bolts, eye bolts, anchors, stud fixings, remedial wall ties etc. Pull off testing provides an assurance of the fixing to carry the applied loading.