Abstract: A resin embedded rock bolt dimensioned to be inserted into a hole drilled in a rock body with a clearance fit between the bolt and hole, the bolt having a shank which is plastically deformed by the application of an eccentric shear force to form a paddle protruding beyond the undeformed exterior of the shank prior to deformation, the paddle being shaped to mix the resin.

Abstract: Improvements to a rock bolt and a method of forming a rock bolt are disclosed. The rock bolt includes at least one paddle section that is formed by applying an eccentric shear force to the shank of the bolt from opposite sides of the bolt. The paddle section is thereby comprising an eccentrically deformed portion of the shank of the bolt. The rock bolt is adapted for use in a hold sized to receive the bolt with a clearance fit. A resin mixture contained in the hold is cooperable with the paddle section of the rock bolt to secure the bolt within the hole.