A protective coating system for a railway structure having a waterproof membrane and a ballast mat. The waterproof membrane is disposed on the railway structure. The ballast mat further has a ballast protection coating and a sealing layer. The ballast protection coating is a rubber compound and is disposed on the waterproof membrane. The sealing layer is disposed on the ballast protection layer.

Track and more particularly slabs (1) for a light railway track in which the slab comprises a convex end (2) and a concave end (3) which are generally concentric and reciprocal to each other such that in use the convex end of one slab and engage the concave end of another slab with the respective slabs at an angle to each other. The slabs are secured together to provided straight and curved sections with a modular slab shape and allowing other features for monitoring and/or improved operation.

A protective coating system for a railway structure having a waterproof membrane and a ballast mat. The waterproof membrane is disposed on the railway structure. The ballast mat further has a ballast protection coating and a sealing layer. The ballast protection coating is a rubber compound and is disposed on the waterproof membrane. The sealing layer is disposed on the ballast protection layer.

A support (32) adapted to be used in place of ballast in supporting a rail support member (31) of a rail track comprises a body (50). The body (50) includes a lower face (70) for resting on a support surface, and an upper surface (71) for supporting the rail support member (31).

A system for installing a drainage structure in the subsurface. The system has a casing, a drive device, and at least one fin. The casing has opposed first and second ends and defines a hollow region. The drive device is supported at the first end of the casing and configured to drive movement of the casing in a first direction. The at least one fin projects from the casing into the hollow region and is configured to buckle a corrugated metal culvert positioned at least partially within the casing when the casing is driven in the first direction. The drive device may be a pneumatic hammer or puller attached to a rod pulling machine.

Disclosed are a prefabricated wire mesh assembly for a ballast and a method of constructing a gravel-ballasted track using the same. When a gravel ballast is used by filling a box-shaped rebar mesh with crushed stones and injecting a filling material, the prefabricated wire mesh assembly increases injection efficiency by further installing an internal partition wall to effectively support loads without forming a separate ballast shoulder and injecting a filling material through injection pipes installed on an internal partition wall, and prevents water accumulation on a roadbed by a drainage pipe. The prefabricated wire mesh assembly for a ballast is assembled by installing the injection pipe along with the lower mesh and the internal partition wall, thereby allowing the filling material to be injected without installation of a plurality of separate injection pipes, and securing construction quality by increasing injection efficiency of the filling material through the installed injection pipes.

Shear drain devices are used to prepare ground with a weak soil layer to receive a static load, for example a structural foundation or a soil embankment, in which the ground includes a weak soil layer that consists of fine grained soils over a base layer. Each shear drain devices each include an elongate perforated pipe member, a surrounding reinforcement member providing tensile reinforcement and aggregate fill. The ground is prepared by (i) inserting the pipe members and reinforcement members in an upright orientation within the fine grained soils such that fluid in the surrounding soil can readily pass into the pipe members and (ii) subsequently placing the aggregate fill in the pipe members to occupy the hollow interior thereof such that the resulting shear drain devices increase a shear strength of the weak soil layer.