Dowelock

The Dowelock system is a boltless connection device for joining two segmental rings together on the circumferential joint. Dowelock is designed to operate with compressible gaskets (Hydrophilic or Elastomeric with or without molded corners). The performance of the dowel is compatible with the compression characteristics of these types of gasket and copes with varying joint gaps whilst minimising gasket offset.

Dowelock consists of a connecting dowel moulded from a high strength, high durability plastic, together with two locking assemblies; one cast into each of the adjacent tunnel lining segments. These locking assemblies incorporate patented locking collets that allow the dowel to enter with a minimal insertion force and then lock, thus preventing the dowel from withdrawing. These collets are retained in such a way as to allow the dowel to be entered off line as they have the capability to rotate whilst the dowel is inserted and therefore aligning and securing the precast concrete units.

Product range includes Dowelock 20, 30, 38 and 45 with tensile strength ranging from 60kn to 20 tons+