RAAC fix delivered for Network Rail
Structural Repairs has completed a major RAAC (reinforced autoclaved aerated concrete) remediation project for Network Rail, applying its Regrid structural strengthening system to secure defective concrete planks on critical infrastructure.
The work followed a detailed structural assessment that revealed cracking, spalling and reinforcement corrosion in RAAC soffits, along with signs of reduced load-bearing capacity. Given the asset’s importance, Structural Repairs was called in to deliver a fast, permanent solution with minimal operational disruption.
The team used non-invasive techniques including ground penetrating radar (GPR) and ultrasonic scanning to assess internal defects and develop a targeted repair strategy. The company’s bespoke Regrid system was then installed to strengthen the defective RAAC planks. Regrid is a lightweight reinforcement mesh designed specifically for use on RAAC, offering fast, overhead installation without the need for full plank replacement.
According to Structural Repairs, the solution restored the structure’s safety and performance standards while keeping costs and downtime to a minimum. The successful outcome adds to a growing list of RAAC remediation projects undertaken by the company across the transport, public and commercial sectors.
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