Flexcrete was chosen for Hams Hall’s rail freight handling facility refurbishment, including concrete reinstatement of pavements, drainage channels and level crossings.
Concrete repairs were needed on pavements, drainage channels and level crossings as over time, the concrete had deteriorated as a result of abrasion, impact damage, fuel leakage and other factors. The terminal is used for container lifting and storage, locomotive refuelling, shunting and wagon stabling, so the concrete deck needs to be able to be exceptionally hard-wearing.
Fastfill, a rapid setting, single component Portland-cement based, Class R4 structural mortar, was specified for the reinstatement of the concrete. Designed for the repair of areas which cannot taken out of service for long periods, or in locations subjected to heavy wear such as platforms, decks, floors and footpaths, it can be applied up to 100mm in a single application or for full section repairs up to 300mm when bulked out with sand or aggregate.
An application of just 7.5mm of Fastfill provides the same level of waterproofing as 1000m of typical concrete. In this case, the main repairs were planed out to 40mm and reinstated with Fastfill and in some areas, the concrete was completely removed and bulked out Fastfill was applied at a depth of 200mm.
It rapidly develops strength, allowing foot traffic within 45 minutes and forklift traffic within two hours, ultimately achieving a compressive strength of 60MPa within 28 days. With no need for substrate or inter-layer priming, it is water-based and non-toxic, presenting no hazards during application. Fastfill will cure normally even in very cold weather conditions at temperatures as low as -10°C and it is both CE marked in accordance with BS EN 1504 and backed by British Board of Agrément (BBA) approval.
In total, over 12 tonnes of Fastfill was applied over a single weekend.