46,000 m³ of Leca® LWA (10–20 mm) Specified for HS2 (Video)

Leca® was procured and selected as the chosen Lightweight Aggregate (LWA) specified   as part of the construction of Old Oak Common (OOC) station in London. 

Old Oak Common is being built on the site of former railways maintenance depots and is approximately 500 metres south of Willesden Junction. It will act as a major interchange connecting HS2 with the Elizabeth Line and Great Western Mainline services.  

More than 46,000 m³ of Leca® LWA (10–20 mm grading) will be supplied to support formation works across the site. Its low bulk density compared with conventional fill materials reduces vertical and lateral loads on underlying soils and underlying and adjacent structures.

This is particularly important where differential settlement must be controlled and where existing assets or newly constructed elements are sensitive to imposed loads.