Reply on topic: ‘Quality issues’ detected in HS2’s pre-cast green tunnel at Chipping Warden
Did segments use "Fiber Reinforced Polymer and Macro Synthetic Fiber" instead of steel bars like in İzmir? https://tunnelcontact.com/discussion/view/3560/turkiye-metro-tunnel-segments-crack-segments-use-fiber-reinforced-polymer-and-macro-synthetic-fiber
cover tunnel photo by: Matt Brown from London, England / CC BY
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