An encapsulation system for use in securing a rock bolt in a bore hole drilled into a rock face to be stabilised, the encapsulation system comprising at least two separate encapsulation mediums and one or more elongate cartridges containing the encapsulation mediums, each the cartridge having a frangible casing, the encapsulation mediums including: a first encapsulation medium comprising a curable first resin formulation; and a second encapsulation medium; wherein, following use in securing a rock bolt, the second encapsulation medium has a lower bond strength and/or a lower compressive strength than the first resin formulation.

An encapsulated adhesive for easy handling and a method of making the encapsulated adhesive are presented. The encapsulated adhesive includes an adhesive material enclosed by a non-adhesive encapsulant that substantially surrounds the adhesive material. The encapsulant is strong enough to withstand handling and storage, but breaks in response to pressure, exposing the adhesive material. A method of bonding two pieces by forming a first cavity in a first piece, inserting the encapsulated adhesive into the first cavity, and inserting a member into the first cavity to breach the encapsulant is also presented.

An encapsulation system (100) for use in securing a rock bolt in a bore hole drilled into a rock face to be stabilised, said encapsulation system comprising at least two separate encapsulation mediums (112,122) and one or more elongate cartridges (110,120) containing said encapsulation mediums (112,122), each said cartridge having a frangible casing (111,121), said encapsulation mediums including: a first encapsulation medium (112) comprising a curable first resin formulation; and a second encapsulation medium (122); wherein, following use in securing a rock bolt, said second encapsulation medium has a lower bond strength and/or a lower compressive strength than said first resin formulation.

The invention relates to an anchoring system for anchoring a securing means such as a bolt in a bore of a substrate, comprising a plurality of rupturable containers each for holding a respective component of a multi-component adhesive, the containers being adjacent and each having a plurality of longitudinally spaced frangible means having a configuration including a transverse element and an elongate element, so that on application of at least a rotational force, the containers twist and the frangible means rupture and form opposed container segments whereby to enhance mixing of the components of the adhesive.

A method of anchoring a first object in a second object. The second object defines an opening. The first object has an insert portion that defines an insertion axis and has an outer shape that may form an undercut with respect to axial directions. The method includes inserting the insert portion in the opening, with a hardenable composition (prepolymer; mortar) between a wall of the opening and the insert portion, and causing mechanical vibration energy to impinge to cause the hardenable composition to undergo a chemical hardening process to yield a hardened composition, so that a first connection between the first object and the hardened composition and a second connection between the hardened composition and the second object results, whereby the first object is anchored in the second object. The first connection and/or the second connection may include an adhesive connection and/or a positive-fit connection.

A multi-component resin system can be used for producing a mortar composition based on isocyanate amine adducts for the chemical fastening of construction elements. A mortar composition based on isocyanate amine adducts is produced from the multi-component resin system. The mortar composition based on the isocyanate amine adducts is useful for the chemical fastening of construction elements in mineral substrates.