Investigation into the transfer mechanism of loads in grouted bolts

A series of push and pull laboratory based tests were used to investigate how the surface profile of resin grouted bolts influenced the load transfer mechanism. The bolts comprised deformed bar having deformation profiles at different heights and different spacing between deformations. The results indicated that peak loads and displacements were directly related to the height and spacing of the deformations. A series of numerical simulations were carried out to confirm the results obtained in the laboratory.