This European Standard describes a means of determining the tensile bond between sprayed concrete and substrate of concrete or rock tested in a laboratory as a direct tension test. Bond strength is defined as the capacity to transfer tension between two layers. Bond strength is calculated as the ultimate tensile force divided by the stressed cross-sectional area of a core, drilled out of a sprayed concrete layer together with a portion of the substrate concrete or rock.
BS EN 14488-4:2005 history
0000 BS EN 14488-4:2005+A1:2008(2009)
2005BS EN 14488-4:2005+A1:2008 Testing sprayed concrete - Part 4: Bond strength of cores by direct tension
2005BS EN 14488-4:2005 Testing sprayed concrete - Bond strength of cores by direct tension