Stress distribution along a resin grouted rock anchor

Abstract The paper compares theoretical shear-stress distribution along a loaded resin grouted rock anchor, with computed shear-stress distributions obtained from tests on instrumented anchors in concrete, limestone and chalk. The results show that whilst at lower anchor loads in the concrete, the observed shear-stress distribution is similar to the theoretical shear-stress distribution; in the weaker limestone and chalk there is evidence of significant debonding. It is concluded that the anchor resistance in these rocks comprised mainly fully mobilised shear resistance.